/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 02:11:33,209 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 02:11:33,276 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 02:11:33,282 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 02:11:33,282 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 02:11:33,317 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 02:11:33,318 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 02:11:33,318 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 02:11:33,319 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 02:11:33,322 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 02:11:33,322 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 02:11:33,323 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 02:11:33,324 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 02:11:33,325 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 02:11:33,325 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 02:11:33,325 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 02:11:33,325 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 02:11:33,326 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 02:11:33,326 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 02:11:33,326 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 02:11:33,326 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 02:11:33,327 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 02:11:33,327 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 02:11:33,327 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 02:11:33,327 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 02:11:33,327 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 02:11:33,328 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 02:11:33,328 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 02:11:33,328 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 02:11:33,329 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 02:11:33,329 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 02:11:33,330 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 02:11:33,330 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 02:11:33,330 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 02:11:33,330 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 02:11:33,330 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 02:11:33,330 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 02:11:33,330 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 02:11:33,331 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 02:11:33,331 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 02:11:33,331 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 02:11:33,331 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 02:11:33,331 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 02:11:33,331 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 02:11:33,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 02:11:33,607 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 02:11:33,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 02:11:33,610 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 02:11:33,610 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 02:11:33,611 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label46.c [2023-12-16 02:11:35,100 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 02:11:35,565 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 02:11:35,568 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label46.c [2023-12-16 02:11:35,589 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fa2404f2/e419e04155be48c884bd9dd725e8853e/FLAGbd5d66890 [2023-12-16 02:11:35,605 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fa2404f2/e419e04155be48c884bd9dd725e8853e [2023-12-16 02:11:35,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 02:11:35,608 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 02:11:35,611 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 02:11:35,611 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 02:11:35,615 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 02:11:35,616 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:11:35" (1/1) ... [2023-12-16 02:11:35,617 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47071f1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:11:35, skipping insertion in model container [2023-12-16 02:11:35,617 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:11:35" (1/1) ... [2023-12-16 02:11:35,682 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 02:11:35,874 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/Problem16_label46.c[1899,1912] [2023-12-16 02:11:36,300 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 02:11:36,310 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 02:11:36,329 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/Problem16_label46.c[1899,1912] [2023-12-16 02:11:36,475 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 02:11:36,491 INFO L206 MainTranslator]: Completed translation [2023-12-16 02:11:36,492 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:11:36 WrapperNode [2023-12-16 02:11:36,492 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 02:11:36,494 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 02:11:36,494 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 02:11:36,494 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 02:11:36,500 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:11:36" (1/1) ... [2023-12-16 02:11:36,542 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:11:36" (1/1) ... [2023-12-16 02:11:36,683 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1770 [2023-12-16 02:11:36,684 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 02:11:36,684 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 02:11:36,685 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 02:11:36,685 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 02:11:36,698 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:11:36" (1/1) ... [2023-12-16 02:11:36,699 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:11:36" (1/1) ... [2023-12-16 02:11:36,713 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:11:36" (1/1) ... [2023-12-16 02:11:36,774 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]. [2023-12-16 02:11:36,775 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:11:36" (1/1) ... [2023-12-16 02:11:36,775 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:11:36" (1/1) ... [2023-12-16 02:11:36,834 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:11:36" (1/1) ... [2023-12-16 02:11:36,857 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:11:36" (1/1) ... [2023-12-16 02:11:36,874 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:11:36" (1/1) ... [2023-12-16 02:11:36,891 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:11:36" (1/1) ... [2023-12-16 02:11:36,920 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 02:11:36,921 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 02:11:36,921 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 02:11:36,922 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 02:11:36,922 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:11:36" (1/1) ... [2023-12-16 02:11:36,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 02:11:36,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:11:36,953 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) [2023-12-16 02:11:36,974 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 [2023-12-16 02:11:36,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 02:11:36,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 02:11:36,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 02:11:36,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 02:11:37,057 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 02:11:37,059 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 02:11:39,067 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 02:11:39,147 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 02:11:39,148 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 02:11:39,149 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:11:39 BoogieIcfgContainer [2023-12-16 02:11:39,149 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 02:11:39,151 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 02:11:39,151 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 02:11:39,154 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 02:11:39,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:11:35" (1/3) ... [2023-12-16 02:11:39,155 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52af3a69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:11:39, skipping insertion in model container [2023-12-16 02:11:39,155 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:11:36" (2/3) ... [2023-12-16 02:11:39,155 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52af3a69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:11:39, skipping insertion in model container [2023-12-16 02:11:39,155 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:11:39" (3/3) ... [2023-12-16 02:11:39,156 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label46.c [2023-12-16 02:11:39,171 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 02:11:39,172 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 02:11:39,250 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 02:11:39,257 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;@66e6aa02, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 02:11:39,257 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 02:11:39,266 INFO L276 IsEmpty]: Start isEmpty. Operand has 334 states, 332 states have (on average 1.9909638554216869) internal successors, (661), 333 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:39,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-16 02:11:39,273 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:11:39,275 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:11:39,275 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:11:39,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:11:39,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1073666091, now seen corresponding path program 1 times [2023-12-16 02:11:39,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:11:39,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211423427] [2023-12-16 02:11:39,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:11:39,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:11:39,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:11:39,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:11:39,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:11:39,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211423427] [2023-12-16 02:11:39,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211423427] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:11:39,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:11:39,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:11:39,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819618237] [2023-12-16 02:11:39,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:11:39,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 02:11:39,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:11:39,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 02:11:39,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 02:11:39,446 INFO L87 Difference]: Start difference. First operand has 334 states, 332 states have (on average 1.9909638554216869) internal successors, (661), 333 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:39,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:11:39,499 INFO L93 Difference]: Finished difference Result 667 states and 1321 transitions. [2023-12-16 02:11:39,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 02:11:39,504 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2023-12-16 02:11:39,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:11:39,514 INFO L225 Difference]: With dead ends: 667 [2023-12-16 02:11:39,514 INFO L226 Difference]: Without dead ends: 332 [2023-12-16 02:11:39,517 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 [2023-12-16 02:11:39,523 INFO L413 NwaCegarLoop]: 596 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, 596 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 [2023-12-16 02:11:39,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 596 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 02:11:39,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2023-12-16 02:11:39,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2023-12-16 02:11:39,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 1.8006042296072509) internal successors, (596), 331 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:39,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 596 transitions. [2023-12-16 02:11:39,584 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 596 transitions. Word has length 15 [2023-12-16 02:11:39,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:11:39,584 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 596 transitions. [2023-12-16 02:11:39,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:39,585 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 596 transitions. [2023-12-16 02:11:39,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-16 02:11:39,585 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:11:39,585 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:11:39,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 02:11:39,586 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:11:39,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:11:39,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1073528330, now seen corresponding path program 1 times [2023-12-16 02:11:39,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:11:39,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959845402] [2023-12-16 02:11:39,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:11:39,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:11:39,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:11:39,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:11:39,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:11:39,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959845402] [2023-12-16 02:11:39,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959845402] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:11:39,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:11:39,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:11:39,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201885345] [2023-12-16 02:11:39,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:11:39,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:11:39,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:11:39,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:11:39,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:11:39,756 INFO L87 Difference]: Start difference. First operand 332 states and 596 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:41,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:11:41,201 INFO L93 Difference]: Finished difference Result 992 states and 1785 transitions. [2023-12-16 02:11:41,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:11:41,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2023-12-16 02:11:41,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:11:41,206 INFO L225 Difference]: With dead ends: 992 [2023-12-16 02:11:41,206 INFO L226 Difference]: Without dead ends: 661 [2023-12-16 02:11:41,208 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 [2023-12-16 02:11:41,209 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 355 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-16 02:11:41,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 199 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-16 02:11:41,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2023-12-16 02:11:41,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 661. [2023-12-16 02:11:41,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 660 states have (on average 1.5196969696969698) internal successors, (1003), 660 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:41,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 1003 transitions. [2023-12-16 02:11:41,242 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 1003 transitions. Word has length 15 [2023-12-16 02:11:41,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:11:41,242 INFO L495 AbstractCegarLoop]: Abstraction has 661 states and 1003 transitions. [2023-12-16 02:11:41,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:41,242 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 1003 transitions. [2023-12-16 02:11:41,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-16 02:11:41,244 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:11:41,244 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 02:11:41,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 02:11:41,245 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:11:41,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:11:41,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1819705616, now seen corresponding path program 1 times [2023-12-16 02:11:41,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:11:41,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78973916] [2023-12-16 02:11:41,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:11:41,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:11:41,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:11:41,518 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:11:41,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:11:41,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78973916] [2023-12-16 02:11:41,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78973916] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:11:41,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:11:41,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:11:41,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005003444] [2023-12-16 02:11:41,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:11:41,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:11:41,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:11:41,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:11:41,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:11:41,526 INFO L87 Difference]: Start difference. First operand 661 states and 1003 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:43,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:11:43,193 INFO L93 Difference]: Finished difference Result 1979 states and 3006 transitions. [2023-12-16 02:11:43,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:11:43,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2023-12-16 02:11:43,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:11:43,199 INFO L225 Difference]: With dead ends: 1979 [2023-12-16 02:11:43,199 INFO L226 Difference]: Without dead ends: 1319 [2023-12-16 02:11:43,200 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 [2023-12-16 02:11:43,205 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 268 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-16 02:11:43,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 215 Invalid, 1261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 962 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-16 02:11:43,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2023-12-16 02:11:43,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1319. [2023-12-16 02:11:43,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1318 states have (on average 1.4559939301972686) internal successors, (1919), 1318 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:43,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1919 transitions. [2023-12-16 02:11:43,252 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1919 transitions. Word has length 83 [2023-12-16 02:11:43,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:11:43,256 INFO L495 AbstractCegarLoop]: Abstraction has 1319 states and 1919 transitions. [2023-12-16 02:11:43,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:43,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1919 transitions. [2023-12-16 02:11:43,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-16 02:11:43,264 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:11:43,264 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:11:43,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 02:11:43,266 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:11:43,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:11:43,267 INFO L85 PathProgramCache]: Analyzing trace with hash -823055311, now seen corresponding path program 1 times [2023-12-16 02:11:43,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:11:43,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790677111] [2023-12-16 02:11:43,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:11:43,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:11:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:11:43,376 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:11:43,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:11:43,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790677111] [2023-12-16 02:11:43,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790677111] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:11:43,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:11:43,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:11:43,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868975945] [2023-12-16 02:11:43,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:11:43,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:11:43,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:11:43,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:11:43,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:11:43,379 INFO L87 Difference]: Start difference. First operand 1319 states and 1919 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:44,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:11:44,634 INFO L93 Difference]: Finished difference Result 3953 states and 5754 transitions. [2023-12-16 02:11:44,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:11:44,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2023-12-16 02:11:44,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:11:44,646 INFO L225 Difference]: With dead ends: 3953 [2023-12-16 02:11:44,647 INFO L226 Difference]: Without dead ends: 2635 [2023-12-16 02:11:44,649 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 [2023-12-16 02:11:44,659 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 369 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 368 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 02:11:44,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 153 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [368 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 02:11:44,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2635 states. [2023-12-16 02:11:44,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2635 to 2635. [2023-12-16 02:11:44,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2635 states, 2634 states have (on average 1.3242217160212604) internal successors, (3488), 2634 states have internal predecessors, (3488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:44,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2635 states to 2635 states and 3488 transitions. [2023-12-16 02:11:44,707 INFO L78 Accepts]: Start accepts. Automaton has 2635 states and 3488 transitions. Word has length 94 [2023-12-16 02:11:44,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:11:44,708 INFO L495 AbstractCegarLoop]: Abstraction has 2635 states and 3488 transitions. [2023-12-16 02:11:44,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:44,708 INFO L276 IsEmpty]: Start isEmpty. Operand 2635 states and 3488 transitions. [2023-12-16 02:11:44,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-12-16 02:11:44,711 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:11:44,711 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:11:44,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 02:11:44,711 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:11:44,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:11:44,712 INFO L85 PathProgramCache]: Analyzing trace with hash -723752210, now seen corresponding path program 1 times [2023-12-16 02:11:44,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:11:44,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38701835] [2023-12-16 02:11:44,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:11:44,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:11:44,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:11:44,945 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-16 02:11:44,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:11:44,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38701835] [2023-12-16 02:11:44,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38701835] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:11:44,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:11:44,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:11:44,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094389662] [2023-12-16 02:11:44,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:11:44,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:11:44,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:11:44,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:11:44,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:11:44,983 INFO L87 Difference]: Start difference. First operand 2635 states and 3488 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:46,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:11:46,128 INFO L93 Difference]: Finished difference Result 6585 states and 8544 transitions. [2023-12-16 02:11:46,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:11:46,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 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 212 [2023-12-16 02:11:46,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:11:46,143 INFO L225 Difference]: With dead ends: 6585 [2023-12-16 02:11:46,143 INFO L226 Difference]: Without dead ends: 3951 [2023-12-16 02:11:46,147 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 [2023-12-16 02:11:46,148 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 277 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-16 02:11:46,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 82 Invalid, 1148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-16 02:11:46,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3951 states. [2023-12-16 02:11:46,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3951 to 3951. [2023-12-16 02:11:46,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3951 states, 3950 states have (on average 1.2164556962025317) internal successors, (4805), 3950 states have internal predecessors, (4805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:46,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3951 states to 3951 states and 4805 transitions. [2023-12-16 02:11:46,216 INFO L78 Accepts]: Start accepts. Automaton has 3951 states and 4805 transitions. Word has length 212 [2023-12-16 02:11:46,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:11:46,216 INFO L495 AbstractCegarLoop]: Abstraction has 3951 states and 4805 transitions. [2023-12-16 02:11:46,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:46,217 INFO L276 IsEmpty]: Start isEmpty. Operand 3951 states and 4805 transitions. [2023-12-16 02:11:46,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2023-12-16 02:11:46,238 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:11:46,238 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 02:11:46,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 02:11:46,238 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:11:46,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:11:46,239 INFO L85 PathProgramCache]: Analyzing trace with hash 2091867922, now seen corresponding path program 1 times [2023-12-16 02:11:46,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:11:46,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346805478] [2023-12-16 02:11:46,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:11:46,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:11:46,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:11:46,874 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:11:46,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:11:46,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346805478] [2023-12-16 02:11:46,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346805478] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:11:46,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:11:46,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:11:46,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135273360] [2023-12-16 02:11:46,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:11:46,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 02:11:46,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:11:46,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 02:11:46,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 02:11:46,877 INFO L87 Difference]: Start difference. First operand 3951 states and 4805 transitions. Second operand has 4 states, 4 states have (on average 65.0) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:48,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:11:48,241 INFO L93 Difference]: Finished difference Result 8242 states and 9962 transitions. [2023-12-16 02:11:48,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 02:11:48,242 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 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 260 [2023-12-16 02:11:48,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:11:48,258 INFO L225 Difference]: With dead ends: 8242 [2023-12-16 02:11:48,258 INFO L226 Difference]: Without dead ends: 4292 [2023-12-16 02:11:48,263 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 [2023-12-16 02:11:48,264 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 173 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 1437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-16 02:11:48,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 362 Invalid, 1437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-16 02:11:48,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4292 states. [2023-12-16 02:11:48,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4292 to 4280. [2023-12-16 02:11:48,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4280 states, 4279 states have (on average 1.2012152372049545) internal successors, (5140), 4279 states have internal predecessors, (5140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:48,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4280 states to 4280 states and 5140 transitions. [2023-12-16 02:11:48,345 INFO L78 Accepts]: Start accepts. Automaton has 4280 states and 5140 transitions. Word has length 260 [2023-12-16 02:11:48,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:11:48,346 INFO L495 AbstractCegarLoop]: Abstraction has 4280 states and 5140 transitions. [2023-12-16 02:11:48,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:48,346 INFO L276 IsEmpty]: Start isEmpty. Operand 4280 states and 5140 transitions. [2023-12-16 02:11:48,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2023-12-16 02:11:48,351 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:11:48,351 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:11:48,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 02:11:48,351 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:11:48,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:11:48,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1980827317, now seen corresponding path program 1 times [2023-12-16 02:11:48,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:11:48,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132226301] [2023-12-16 02:11:48,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:11:48,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:11:48,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:11:48,938 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:11:48,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:11:48,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132226301] [2023-12-16 02:11:48,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132226301] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:11:48,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:11:48,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 02:11:48,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188525694] [2023-12-16 02:11:48,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:11:48,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 02:11:48,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:11:48,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 02:11:48,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-16 02:11:48,941 INFO L87 Difference]: Start difference. First operand 4280 states and 5140 transitions. Second operand has 7 states, 7 states have (on average 49.57142857142857) internal successors, (347), 6 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:51,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:11:51,053 INFO L93 Difference]: Finished difference Result 8089 states and 9791 transitions. [2023-12-16 02:11:51,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 02:11:51,054 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 49.57142857142857) internal successors, (347), 6 states have internal predecessors, (347), 0 states have call successors, (0), 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 347 [2023-12-16 02:11:51,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:11:51,071 INFO L225 Difference]: With dead ends: 8089 [2023-12-16 02:11:51,071 INFO L226 Difference]: Without dead ends: 3951 [2023-12-16 02:11:51,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-16 02:11:51,078 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 308 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1871 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 2222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 1871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:11:51,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 287 Invalid, 2222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 1871 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-16 02:11:51,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3951 states. [2023-12-16 02:11:51,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3951 to 3951. [2023-12-16 02:11:51,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3951 states, 3950 states have (on average 1.080253164556962) internal successors, (4267), 3950 states have internal predecessors, (4267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:51,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3951 states to 3951 states and 4267 transitions. [2023-12-16 02:11:51,138 INFO L78 Accepts]: Start accepts. Automaton has 3951 states and 4267 transitions. Word has length 347 [2023-12-16 02:11:51,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:11:51,138 INFO L495 AbstractCegarLoop]: Abstraction has 3951 states and 4267 transitions. [2023-12-16 02:11:51,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 49.57142857142857) internal successors, (347), 6 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:51,139 INFO L276 IsEmpty]: Start isEmpty. Operand 3951 states and 4267 transitions. [2023-12-16 02:11:51,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2023-12-16 02:11:51,161 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:11:51,161 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:11:51,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 02:11:51,162 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:11:51,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:11:51,162 INFO L85 PathProgramCache]: Analyzing trace with hash -96401109, now seen corresponding path program 1 times [2023-12-16 02:11:51,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:11:51,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044437011] [2023-12-16 02:11:51,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:11:51,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:11:51,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:11:51,467 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-16 02:11:51,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:11:51,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044437011] [2023-12-16 02:11:51,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044437011] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:11:51,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:11:51,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:11:51,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137905423] [2023-12-16 02:11:51,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:11:51,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:11:51,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:11:51,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:11:51,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:11:51,470 INFO L87 Difference]: Start difference. First operand 3951 states and 4267 transitions. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:52,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:11:52,383 INFO L93 Difference]: Finished difference Result 9217 states and 10059 transitions. [2023-12-16 02:11:52,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:11:52,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 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 354 [2023-12-16 02:11:52,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:11:52,401 INFO L225 Difference]: With dead ends: 9217 [2023-12-16 02:11:52,401 INFO L226 Difference]: Without dead ends: 5596 [2023-12-16 02:11:52,407 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 [2023-12-16 02:11:52,408 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 319 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 02:11:52,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 403 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 02:11:52,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5596 states. [2023-12-16 02:11:52,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5596 to 5596. [2023-12-16 02:11:52,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5596 states, 5595 states have (on average 1.0748882931188561) internal successors, (6014), 5595 states have internal predecessors, (6014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:52,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5596 states to 5596 states and 6014 transitions. [2023-12-16 02:11:52,498 INFO L78 Accepts]: Start accepts. Automaton has 5596 states and 6014 transitions. Word has length 354 [2023-12-16 02:11:52,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:11:52,498 INFO L495 AbstractCegarLoop]: Abstraction has 5596 states and 6014 transitions. [2023-12-16 02:11:52,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:52,499 INFO L276 IsEmpty]: Start isEmpty. Operand 5596 states and 6014 transitions. [2023-12-16 02:11:52,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2023-12-16 02:11:52,504 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:11:52,504 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:11:52,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 02:11:52,505 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:11:52,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:11:52,505 INFO L85 PathProgramCache]: Analyzing trace with hash -398479596, now seen corresponding path program 1 times [2023-12-16 02:11:52,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:11:52,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243220568] [2023-12-16 02:11:52,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:11:52,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:11:52,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:11:52,845 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:11:52,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:11:52,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243220568] [2023-12-16 02:11:52,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243220568] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:11:52,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:11:52,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:11:52,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511788211] [2023-12-16 02:11:52,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:11:52,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:11:52,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:11:52,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:11:52,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:11:52,849 INFO L87 Difference]: Start difference. First operand 5596 states and 6014 transitions. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:53,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:11:53,760 INFO L93 Difference]: Finished difference Result 10862 states and 11696 transitions. [2023-12-16 02:11:53,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:11:53,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 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 409 [2023-12-16 02:11:53,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:11:53,789 INFO L225 Difference]: With dead ends: 10862 [2023-12-16 02:11:53,790 INFO L226 Difference]: Without dead ends: 5596 [2023-12-16 02:11:53,796 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 [2023-12-16 02:11:53,797 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 178 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 02:11:53,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 414 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 02:11:53,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5596 states. [2023-12-16 02:11:53,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5596 to 5596. [2023-12-16 02:11:53,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5596 states, 5595 states have (on average 1.0491510277033065) internal successors, (5870), 5595 states have internal predecessors, (5870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:53,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5596 states to 5596 states and 5870 transitions. [2023-12-16 02:11:53,880 INFO L78 Accepts]: Start accepts. Automaton has 5596 states and 5870 transitions. Word has length 409 [2023-12-16 02:11:53,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:11:53,880 INFO L495 AbstractCegarLoop]: Abstraction has 5596 states and 5870 transitions. [2023-12-16 02:11:53,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:53,893 INFO L276 IsEmpty]: Start isEmpty. Operand 5596 states and 5870 transitions. [2023-12-16 02:11:53,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2023-12-16 02:11:53,901 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:11:53,901 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:11:53,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 02:11:53,902 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:11:53,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:11:53,906 INFO L85 PathProgramCache]: Analyzing trace with hash -2088439446, now seen corresponding path program 1 times [2023-12-16 02:11:53,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:11:53,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716667925] [2023-12-16 02:11:53,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:11:53,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:11:54,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:11:54,364 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:11:54,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:11:54,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716667925] [2023-12-16 02:11:54,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716667925] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:11:54,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:11:54,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:11:54,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012488404] [2023-12-16 02:11:54,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:11:54,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 02:11:54,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:11:54,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 02:11:54,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 02:11:54,371 INFO L87 Difference]: Start difference. First operand 5596 states and 5870 transitions. Second operand has 4 states, 4 states have (on average 123.25) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:56,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:11:56,207 INFO L93 Difference]: Finished difference Result 16455 states and 17282 transitions. [2023-12-16 02:11:56,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 02:11:56,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 123.25) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 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 493 [2023-12-16 02:11:56,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:11:56,226 INFO L225 Difference]: With dead ends: 16455 [2023-12-16 02:11:56,226 INFO L226 Difference]: Without dead ends: 11189 [2023-12-16 02:11:56,232 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 [2023-12-16 02:11:56,233 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 192 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1621 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 1734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-16 02:11:56,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 95 Invalid, 1734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1621 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-16 02:11:56,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11189 states. [2023-12-16 02:11:56,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11189 to 9215. [2023-12-16 02:11:56,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9215 states, 9214 states have (on average 1.0493813761667028) internal successors, (9669), 9214 states have internal predecessors, (9669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:56,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9215 states to 9215 states and 9669 transitions. [2023-12-16 02:11:56,378 INFO L78 Accepts]: Start accepts. Automaton has 9215 states and 9669 transitions. Word has length 493 [2023-12-16 02:11:56,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:11:56,378 INFO L495 AbstractCegarLoop]: Abstraction has 9215 states and 9669 transitions. [2023-12-16 02:11:56,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 123.25) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:56,379 INFO L276 IsEmpty]: Start isEmpty. Operand 9215 states and 9669 transitions. [2023-12-16 02:11:56,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2023-12-16 02:11:56,382 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:11:56,383 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 02:11:56,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 02:11:56,383 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:11:56,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:11:56,384 INFO L85 PathProgramCache]: Analyzing trace with hash -148858476, now seen corresponding path program 1 times [2023-12-16 02:11:56,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:11:56,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011156797] [2023-12-16 02:11:56,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:11:56,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:11:56,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:11:56,752 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 295 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-16 02:11:56,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:11:56,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011156797] [2023-12-16 02:11:56,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011156797] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:11:56,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:11:56,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:11:56,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960174171] [2023-12-16 02:11:56,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:11:56,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:11:56,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:11:56,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:11:56,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:11:56,754 INFO L87 Difference]: Start difference. First operand 9215 states and 9669 transitions. Second operand has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:57,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:11:57,736 INFO L93 Difference]: Finished difference Result 21061 states and 22143 transitions. [2023-12-16 02:11:57,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:11:57,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 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 513 [2023-12-16 02:11:57,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:11:57,759 INFO L225 Difference]: With dead ends: 21061 [2023-12-16 02:11:57,759 INFO L226 Difference]: Without dead ends: 12176 [2023-12-16 02:11:57,771 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 [2023-12-16 02:11:57,772 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 189 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 02:11:57,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 36 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 02:11:57,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12176 states. [2023-12-16 02:11:57,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12176 to 11518. [2023-12-16 02:11:57,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11518 states, 11517 states have (on average 1.046800382043935) internal successors, (12056), 11517 states have internal predecessors, (12056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:57,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11518 states to 11518 states and 12056 transitions. [2023-12-16 02:11:57,942 INFO L78 Accepts]: Start accepts. Automaton has 11518 states and 12056 transitions. Word has length 513 [2023-12-16 02:11:57,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:11:57,943 INFO L495 AbstractCegarLoop]: Abstraction has 11518 states and 12056 transitions. [2023-12-16 02:11:57,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:11:57,943 INFO L276 IsEmpty]: Start isEmpty. Operand 11518 states and 12056 transitions. [2023-12-16 02:11:57,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 568 [2023-12-16 02:11:57,948 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:11:57,949 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-12-16 02:11:57,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 02:11:57,949 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:11:57,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:11:57,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1637746779, now seen corresponding path program 1 times [2023-12-16 02:11:57,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:11:57,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763938802] [2023-12-16 02:11:57,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:11:57,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:11:58,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:11:59,172 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 344 proven. 156 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-16 02:11:59,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:11:59,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763938802] [2023-12-16 02:11:59,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763938802] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 02:11:59,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441845286] [2023-12-16 02:11:59,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:11:59,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:11:59,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:11:59,175 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) [2023-12-16 02:11:59,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 02:11:59,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:11:59,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 02:11:59,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:11:59,694 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 357 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-12-16 02:11:59,695 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:11:59,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441845286] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:11:59,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 02:11:59,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-12-16 02:11:59,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030728359] [2023-12-16 02:11:59,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:11:59,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:11:59,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:11:59,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:11:59,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-16 02:11:59,698 INFO L87 Difference]: Start difference. First operand 11518 states and 12056 transitions. Second operand has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:12:00,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:12:00,534 INFO L93 Difference]: Finished difference Result 25667 states and 26945 transitions. [2023-12-16 02:12:00,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:12:00,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 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 567 [2023-12-16 02:12:00,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:12:00,562 INFO L225 Difference]: With dead ends: 25667 [2023-12-16 02:12:00,562 INFO L226 Difference]: Without dead ends: 14479 [2023-12-16 02:12:00,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 566 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-16 02:12:00,577 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 173 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 02:12:00,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 439 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 02:12:00,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14479 states. [2023-12-16 02:12:00,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14479 to 13821. [2023-12-16 02:12:00,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13821 states, 13820 states have (on average 1.045151953690304) internal successors, (14444), 13820 states have internal predecessors, (14444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:12:00,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13821 states to 13821 states and 14444 transitions. [2023-12-16 02:12:00,812 INFO L78 Accepts]: Start accepts. Automaton has 13821 states and 14444 transitions. Word has length 567 [2023-12-16 02:12:00,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:12:00,813 INFO L495 AbstractCegarLoop]: Abstraction has 13821 states and 14444 transitions. [2023-12-16 02:12:00,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:12:00,813 INFO L276 IsEmpty]: Start isEmpty. Operand 13821 states and 14444 transitions. [2023-12-16 02:12:00,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2023-12-16 02:12:00,836 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:12:00,836 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:12:00,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 02:12:01,048 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,SelfDestructingSolverStorable11 [2023-12-16 02:12:01,049 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:12:01,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:12:01,049 INFO L85 PathProgramCache]: Analyzing trace with hash -440294559, now seen corresponding path program 1 times [2023-12-16 02:12:01,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:12:01,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410603930] [2023-12-16 02:12:01,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:12:01,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:12:01,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:12:01,477 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2023-12-16 02:12:01,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:12:01,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410603930] [2023-12-16 02:12:01,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410603930] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:12:01,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:12:01,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:12:01,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508005750] [2023-12-16 02:12:01,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:12:01,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:12:01,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:12:01,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:12:01,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:12:01,480 INFO L87 Difference]: Start difference. First operand 13821 states and 14444 transitions. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:12:02,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:12:02,396 INFO L93 Difference]: Finished difference Result 27312 states and 28556 transitions. [2023-12-16 02:12:02,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:12:02,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 628 [2023-12-16 02:12:02,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:12:02,442 INFO L225 Difference]: With dead ends: 27312 [2023-12-16 02:12:02,442 INFO L226 Difference]: Without dead ends: 13821 [2023-12-16 02:12:02,457 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 [2023-12-16 02:12:02,458 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 331 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 02:12:02,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 424 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 745 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 02:12:02,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13821 states. [2023-12-16 02:12:02,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13821 to 12834. [2023-12-16 02:12:02,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12834 states, 12833 states have (on average 1.0424686355489754) internal successors, (13378), 12833 states have internal predecessors, (13378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:12:02,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12834 states to 12834 states and 13378 transitions. [2023-12-16 02:12:02,632 INFO L78 Accepts]: Start accepts. Automaton has 12834 states and 13378 transitions. Word has length 628 [2023-12-16 02:12:02,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:12:02,632 INFO L495 AbstractCegarLoop]: Abstraction has 12834 states and 13378 transitions. [2023-12-16 02:12:02,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:12:02,633 INFO L276 IsEmpty]: Start isEmpty. Operand 12834 states and 13378 transitions. [2023-12-16 02:12:02,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 827 [2023-12-16 02:12:02,645 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:12:02,645 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-16 02:12:02,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 02:12:02,645 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:12:02,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:12:02,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1011029240, now seen corresponding path program 1 times [2023-12-16 02:12:02,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:12:02,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891282852] [2023-12-16 02:12:02,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:12:02,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:12:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:12:03,955 INFO L134 CoverageAnalysis]: Checked inductivity of 978 backedges. 42 proven. 561 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2023-12-16 02:12:03,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:12:03,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891282852] [2023-12-16 02:12:03,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891282852] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 02:12:03,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441083569] [2023-12-16 02:12:03,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:12:03,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:12:03,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:12:03,957 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) [2023-12-16 02:12:03,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 02:12:04,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:12:04,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 964 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 02:12:04,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:12:04,270 INFO L134 CoverageAnalysis]: Checked inductivity of 978 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 923 trivial. 0 not checked. [2023-12-16 02:12:04,270 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:12:04,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441083569] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:12:04,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 02:12:04,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-16 02:12:04,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869817617] [2023-12-16 02:12:04,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:12:04,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:12:04,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:12:04,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:12:04,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 02:12:04,273 INFO L87 Difference]: Start difference. First operand 12834 states and 13378 transitions. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:12:05,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:12:05,102 INFO L93 Difference]: Finished difference Result 25338 states and 26424 transitions. [2023-12-16 02:12:05,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:12:05,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 826 [2023-12-16 02:12:05,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:12:05,123 INFO L225 Difference]: With dead ends: 25338 [2023-12-16 02:12:05,124 INFO L226 Difference]: Without dead ends: 12834 [2023-12-16 02:12:05,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 830 GetRequests, 826 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 02:12:05,135 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 351 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 02:12:05,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 374 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 02:12:05,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12834 states. [2023-12-16 02:12:05,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12834 to 12834. [2023-12-16 02:12:05,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12834 states, 12833 states have (on average 1.036312631496922) internal successors, (13299), 12833 states have internal predecessors, (13299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:12:05,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12834 states to 12834 states and 13299 transitions. [2023-12-16 02:12:05,276 INFO L78 Accepts]: Start accepts. Automaton has 12834 states and 13299 transitions. Word has length 826 [2023-12-16 02:12:05,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:12:05,277 INFO L495 AbstractCegarLoop]: Abstraction has 12834 states and 13299 transitions. [2023-12-16 02:12:05,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:12:05,277 INFO L276 IsEmpty]: Start isEmpty. Operand 12834 states and 13299 transitions. [2023-12-16 02:12:05,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 844 [2023-12-16 02:12:05,290 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:12:05,290 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:12:05,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 02:12:05,497 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,SelfDestructingSolverStorable13 [2023-12-16 02:12:05,498 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:12:05,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:12:05,498 INFO L85 PathProgramCache]: Analyzing trace with hash 200224903, now seen corresponding path program 1 times [2023-12-16 02:12:05,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:12:05,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089432059] [2023-12-16 02:12:05,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:12:05,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:12:05,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:12:06,268 INFO L134 CoverageAnalysis]: Checked inductivity of 987 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2023-12-16 02:12:06,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:12:06,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089432059] [2023-12-16 02:12:06,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089432059] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:12:06,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:12:06,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:12:06,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980147826] [2023-12-16 02:12:06,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:12:06,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:12:06,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:12:06,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:12:06,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:12:06,271 INFO L87 Difference]: Start difference. First operand 12834 states and 13299 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) [2023-12-16 02:12:07,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:12:07,056 INFO L93 Difference]: Finished difference Result 30273 states and 31425 transitions. [2023-12-16 02:12:07,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:12:07,057 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 843 [2023-12-16 02:12:07,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:12:07,081 INFO L225 Difference]: With dead ends: 30273 [2023-12-16 02:12:07,081 INFO L226 Difference]: Without dead ends: 16124 [2023-12-16 02:12:07,093 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 [2023-12-16 02:12:07,094 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 269 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 02:12:07,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 427 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 02:12:07,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16124 states. [2023-12-16 02:12:07,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16124 to 15795. [2023-12-16 02:12:07,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15795 states, 15794 states have (on average 1.0291249841712042) internal successors, (16254), 15794 states have internal predecessors, (16254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:12:07,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15795 states to 15795 states and 16254 transitions. [2023-12-16 02:12:07,356 INFO L78 Accepts]: Start accepts. Automaton has 15795 states and 16254 transitions. Word has length 843 [2023-12-16 02:12:07,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:12:07,357 INFO L495 AbstractCegarLoop]: Abstraction has 15795 states and 16254 transitions. [2023-12-16 02:12:07,358 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) [2023-12-16 02:12:07,358 INFO L276 IsEmpty]: Start isEmpty. Operand 15795 states and 16254 transitions. [2023-12-16 02:12:07,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1100 [2023-12-16 02:12:07,384 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:12:07,384 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-16 02:12:07,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 02:12:07,385 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:12:07,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:12:07,386 INFO L85 PathProgramCache]: Analyzing trace with hash 966702288, now seen corresponding path program 1 times [2023-12-16 02:12:07,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:12:07,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220160474] [2023-12-16 02:12:07,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:12:07,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:12:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:12:08,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2309 backedges. 1654 proven. 0 refuted. 0 times theorem prover too weak. 655 trivial. 0 not checked. [2023-12-16 02:12:08,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:12:08,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220160474] [2023-12-16 02:12:08,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220160474] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:12:08,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:12:08,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:12:08,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16198077] [2023-12-16 02:12:08,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:12:08,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:12:08,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:12:08,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:12:08,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:12:08,145 INFO L87 Difference]: Start difference. First operand 15795 states and 16254 transitions. Second operand has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:12:08,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:12:08,962 INFO L93 Difference]: Finished difference Result 31260 states and 32176 transitions. [2023-12-16 02:12:08,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:12:08,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 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 1099 [2023-12-16 02:12:08,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:12:08,986 INFO L225 Difference]: With dead ends: 31260 [2023-12-16 02:12:08,986 INFO L226 Difference]: Without dead ends: 15795 [2023-12-16 02:12:08,999 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 [2023-12-16 02:12:08,999 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 220 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 02:12:08,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 426 Invalid, 801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 02:12:09,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15795 states. [2023-12-16 02:12:09,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15795 to 14479. [2023-12-16 02:12:09,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14479 states, 14478 states have (on average 1.0232766956761983) internal successors, (14815), 14478 states have internal predecessors, (14815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:12:09,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14479 states to 14479 states and 14815 transitions. [2023-12-16 02:12:09,174 INFO L78 Accepts]: Start accepts. Automaton has 14479 states and 14815 transitions. Word has length 1099 [2023-12-16 02:12:09,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:12:09,175 INFO L495 AbstractCegarLoop]: Abstraction has 14479 states and 14815 transitions. [2023-12-16 02:12:09,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:12:09,175 INFO L276 IsEmpty]: Start isEmpty. Operand 14479 states and 14815 transitions. [2023-12-16 02:12:09,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1101 [2023-12-16 02:12:09,198 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:12:09,198 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-16 02:12:09,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 02:12:09,199 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:12:09,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:12:09,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1456731833, now seen corresponding path program 1 times [2023-12-16 02:12:09,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:12:09,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584718698] [2023-12-16 02:12:09,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:12:09,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:12:09,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:12:10,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2315 backedges. 502 proven. 0 refuted. 0 times theorem prover too weak. 1813 trivial. 0 not checked. [2023-12-16 02:12:10,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:12:10,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584718698] [2023-12-16 02:12:10,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584718698] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:12:10,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:12:10,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:12:10,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142551288] [2023-12-16 02:12:10,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:12:10,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:12:10,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:12:10,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:12:10,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:12:10,014 INFO L87 Difference]: Start difference. First operand 14479 states and 14815 transitions. Second operand has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:12:10,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:12:10,784 INFO L93 Difference]: Finished difference Result 31918 states and 32698 transitions. [2023-12-16 02:12:10,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:12:10,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 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 1100 [2023-12-16 02:12:10,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:12:10,801 INFO L225 Difference]: With dead ends: 31918 [2023-12-16 02:12:10,801 INFO L226 Difference]: Without dead ends: 15466 [2023-12-16 02:12:10,812 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 [2023-12-16 02:12:10,813 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 273 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 02:12:10,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 409 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 02:12:10,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15466 states. [2023-12-16 02:12:10,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15466 to 12834. [2023-12-16 02:12:10,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12834 states, 12833 states have (on average 1.020182342398504) internal successors, (13092), 12833 states have internal predecessors, (13092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:12:10,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12834 states to 12834 states and 13092 transitions. [2023-12-16 02:12:10,954 INFO L78 Accepts]: Start accepts. Automaton has 12834 states and 13092 transitions. Word has length 1100 [2023-12-16 02:12:10,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:12:10,955 INFO L495 AbstractCegarLoop]: Abstraction has 12834 states and 13092 transitions. [2023-12-16 02:12:10,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:12:10,955 INFO L276 IsEmpty]: Start isEmpty. Operand 12834 states and 13092 transitions. [2023-12-16 02:12:10,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1356 [2023-12-16 02:12:10,980 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:12:10,980 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 02:12:10,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-16 02:12:10,981 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:12:10,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:12:10,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1880526722, now seen corresponding path program 1 times [2023-12-16 02:12:10,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:12:10,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575045181] [2023-12-16 02:12:10,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:12:10,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:12:11,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:12:12,524 INFO L134 CoverageAnalysis]: Checked inductivity of 3790 backedges. 2299 proven. 0 refuted. 0 times theorem prover too weak. 1491 trivial. 0 not checked. [2023-12-16 02:12:12,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:12:12,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575045181] [2023-12-16 02:12:12,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575045181] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:12:12,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:12:12,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:12:12,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336587423] [2023-12-16 02:12:12,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:12:12,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:12:12,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:12:12,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:12:12,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:12:12,528 INFO L87 Difference]: Start difference. First operand 12834 states and 13092 transitions. Second operand has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:12:13,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:12:13,343 INFO L93 Difference]: Finished difference Result 25996 states and 26518 transitions. [2023-12-16 02:12:13,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:12:13,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 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 1355 [2023-12-16 02:12:13,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:12:13,359 INFO L225 Difference]: With dead ends: 25996 [2023-12-16 02:12:13,360 INFO L226 Difference]: Without dead ends: 13492 [2023-12-16 02:12:13,369 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 [2023-12-16 02:12:13,370 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 224 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 02:12:13,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 427 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 02:12:13,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13492 states. [2023-12-16 02:12:13,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13492 to 13492. [2023-12-16 02:12:13,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13492 states, 13491 states have (on average 1.0194944778000148) internal successors, (13754), 13491 states have internal predecessors, (13754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:12:13,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13492 states to 13492 states and 13754 transitions. [2023-12-16 02:12:13,509 INFO L78 Accepts]: Start accepts. Automaton has 13492 states and 13754 transitions. Word has length 1355 [2023-12-16 02:12:13,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:12:13,510 INFO L495 AbstractCegarLoop]: Abstraction has 13492 states and 13754 transitions. [2023-12-16 02:12:13,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:12:13,510 INFO L276 IsEmpty]: Start isEmpty. Operand 13492 states and 13754 transitions. [2023-12-16 02:12:13,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1394 [2023-12-16 02:12:13,538 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:12:13,538 INFO L195 NwaCegarLoop]: trace histogram [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, 8, 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, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:12:13,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-16 02:12:13,538 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:12:13,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:12:13,539 INFO L85 PathProgramCache]: Analyzing trace with hash -769860126, now seen corresponding path program 1 times [2023-12-16 02:12:13,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:12:13,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509348835] [2023-12-16 02:12:13,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:12:13,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:12:13,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:12:14,832 INFO L134 CoverageAnalysis]: Checked inductivity of 3551 backedges. 2549 proven. 0 refuted. 0 times theorem prover too weak. 1002 trivial. 0 not checked. [2023-12-16 02:12:14,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:12:14,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509348835] [2023-12-16 02:12:14,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509348835] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:12:14,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:12:14,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 02:12:14,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580708484] [2023-12-16 02:12:14,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:12:14,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 02:12:14,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:12:14,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 02:12:14,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-16 02:12:14,836 INFO L87 Difference]: Start difference. First operand 13492 states and 13754 transitions. Second operand has 6 states, 6 states have (on average 122.16666666666667) internal successors, (733), 6 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:12:15,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:12:15,888 INFO L93 Difference]: Finished difference Result 26689 states and 27211 transitions. [2023-12-16 02:12:15,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 02:12:15,888 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 122.16666666666667) internal successors, (733), 6 states have internal predecessors, (733), 0 states have call successors, (0), 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 1393 [2023-12-16 02:12:15,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:12:15,904 INFO L225 Difference]: With dead ends: 26689 [2023-12-16 02:12:15,904 INFO L226 Difference]: Without dead ends: 13527 [2023-12-16 02:12:15,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-16 02:12:15,915 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 452 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 1345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:12:15,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 548 Invalid, 1345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 02:12:15,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13527 states. [2023-12-16 02:12:16,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13527 to 13492. [2023-12-16 02:12:16,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13492 states, 13491 states have (on average 1.0191979838410792) internal successors, (13750), 13491 states have internal predecessors, (13750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:12:16,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13492 states to 13492 states and 13750 transitions. [2023-12-16 02:12:16,030 INFO L78 Accepts]: Start accepts. Automaton has 13492 states and 13750 transitions. Word has length 1393 [2023-12-16 02:12:16,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:12:16,031 INFO L495 AbstractCegarLoop]: Abstraction has 13492 states and 13750 transitions. [2023-12-16 02:12:16,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 122.16666666666667) internal successors, (733), 6 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:12:16,031 INFO L276 IsEmpty]: Start isEmpty. Operand 13492 states and 13750 transitions. [2023-12-16 02:12:16,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1408 [2023-12-16 02:12:16,053 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:12:16,054 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:12:16,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-16 02:12:16,054 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:12:16,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:12:16,055 INFO L85 PathProgramCache]: Analyzing trace with hash 571511019, now seen corresponding path program 1 times [2023-12-16 02:12:16,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:12:16,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342842391] [2023-12-16 02:12:16,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:12:16,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:12:16,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:12:17,498 INFO L134 CoverageAnalysis]: Checked inductivity of 3451 backedges. 2486 proven. 0 refuted. 0 times theorem prover too weak. 965 trivial. 0 not checked. [2023-12-16 02:12:17,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:12:17,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342842391] [2023-12-16 02:12:17,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342842391] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:12:17,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:12:17,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 02:12:17,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903840437] [2023-12-16 02:12:17,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:12:17,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 02:12:17,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:12:17,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 02:12:17,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 02:12:17,502 INFO L87 Difference]: Start difference. First operand 13492 states and 13750 transitions. Second operand has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:12:18,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:12:18,587 INFO L93 Difference]: Finished difference Result 26664 states and 27178 transitions. [2023-12-16 02:12:18,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 02:12:18,587 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 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 1407 [2023-12-16 02:12:18,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:12:18,602 INFO L225 Difference]: With dead ends: 26664 [2023-12-16 02:12:18,603 INFO L226 Difference]: Without dead ends: 13502 [2023-12-16 02:12:18,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 02:12:18,612 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 262 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 1268 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:12:18,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 431 Invalid, 1294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1268 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 02:12:18,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13502 states. [2023-12-16 02:12:18,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13502 to 13492. [2023-12-16 02:12:18,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13492 states, 13491 states have (on average 1.0189014898821436) internal successors, (13746), 13491 states have internal predecessors, (13746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:12:18,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13492 states to 13492 states and 13746 transitions. [2023-12-16 02:12:18,734 INFO L78 Accepts]: Start accepts. Automaton has 13492 states and 13746 transitions. Word has length 1407 [2023-12-16 02:12:18,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:12:18,735 INFO L495 AbstractCegarLoop]: Abstraction has 13492 states and 13746 transitions. [2023-12-16 02:12:18,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:12:18,735 INFO L276 IsEmpty]: Start isEmpty. Operand 13492 states and 13746 transitions. [2023-12-16 02:12:18,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1410 [2023-12-16 02:12:18,751 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:12:18,751 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:12:18,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-16 02:12:18,751 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:12:18,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:12:18,752 INFO L85 PathProgramCache]: Analyzing trace with hash 411932643, now seen corresponding path program 1 times [2023-12-16 02:12:18,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:12:18,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857064971] [2023-12-16 02:12:18,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:12:18,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:12:18,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:12:20,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3785 backedges. 2349 proven. 66 refuted. 0 times theorem prover too weak. 1370 trivial. 0 not checked. [2023-12-16 02:12:20,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:12:20,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857064971] [2023-12-16 02:12:20,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857064971] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 02:12:20,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873382199] [2023-12-16 02:12:20,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:12:20,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:12:20,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:12:20,097 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) [2023-12-16 02:12:20,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 02:12:20,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:12:20,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 1636 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 02:12:20,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:12:23,555 INFO L134 CoverageAnalysis]: Checked inductivity of 3785 backedges. 1829 proven. 201 refuted. 0 times theorem prover too weak. 1755 trivial. 0 not checked. [2023-12-16 02:12:23,556 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-16 02:12:26,352 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 02:12:26,352 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 02:12:26,358 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 02:12:26,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 02:12:26,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:12:26,570 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 1410 with TraceHistMax 9,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. [2023-12-16 02:12:26,575 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:12:26,578 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 02:12:26,581 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 02:12:26 BoogieIcfgContainer [2023-12-16 02:12:26,581 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 02:12:26,581 INFO L158 Benchmark]: Toolchain (without parser) took 50973.28ms. Allocated memory was 234.9MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 178.3MB in the beginning and 1.1GB in the end (delta: -902.3MB). Peak memory consumption was 169.5MB. Max. memory is 8.0GB. [2023-12-16 02:12:26,582 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 189.8MB. Free memory is still 138.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 02:12:26,582 INFO L158 Benchmark]: CACSL2BoogieTranslator took 882.15ms. Allocated memory is still 234.9MB. Free memory was 178.0MB in the beginning and 166.9MB in the end (delta: 11.2MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. [2023-12-16 02:12:26,582 INFO L158 Benchmark]: Boogie Procedure Inliner took 189.82ms. Allocated memory is still 234.9MB. Free memory was 166.9MB in the beginning and 143.3MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2023-12-16 02:12:26,582 INFO L158 Benchmark]: Boogie Preprocessor took 236.01ms. Allocated memory is still 234.9MB. Free memory was 143.3MB in the beginning and 108.7MB in the end (delta: 34.6MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. [2023-12-16 02:12:26,583 INFO L158 Benchmark]: RCFGBuilder took 2227.40ms. Allocated memory was 234.9MB in the beginning and 314.6MB in the end (delta: 79.7MB). Free memory was 108.7MB in the beginning and 225.8MB in the end (delta: -117.2MB). Peak memory consumption was 49.1MB. Max. memory is 8.0GB. [2023-12-16 02:12:26,583 INFO L158 Benchmark]: TraceAbstraction took 47430.04ms. Allocated memory was 314.6MB in the beginning and 1.3GB in the end (delta: 990.9MB). Free memory was 225.3MB in the beginning and 1.1GB in the end (delta: -855.2MB). Peak memory consumption was 136.2MB. Max. memory is 8.0GB. [2023-12-16 02:12:26,596 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 189.8MB. Free memory is still 138.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 882.15ms. Allocated memory is still 234.9MB. Free memory was 178.0MB in the beginning and 166.9MB in the end (delta: 11.2MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 189.82ms. Allocated memory is still 234.9MB. Free memory was 166.9MB in the beginning and 143.3MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 236.01ms. Allocated memory is still 234.9MB. Free memory was 143.3MB in the beginning and 108.7MB in the end (delta: 34.6MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. * RCFGBuilder took 2227.40ms. Allocated memory was 234.9MB in the beginning and 314.6MB in the end (delta: 79.7MB). Free memory was 108.7MB in the beginning and 225.8MB in the end (delta: -117.2MB). Peak memory consumption was 49.1MB. Max. memory is 8.0GB. * TraceAbstraction took 47430.04ms. Allocated memory was 314.6MB in the beginning and 1.3GB in the end (delta: 990.9MB). Free memory was 225.3MB in the beginning and 1.1GB in the end (delta: -855.2MB). Peak memory consumption was 136.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 65). Cancelled while NwaCegarLoop was analyzing trace of length 1410 with TraceHistMax 9,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 334 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 47.4s, OverallIterations: 21, TraceHistogramMax: 9, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.3s, AutomataDifference: 22.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5183 SdHoareTripleChecker+Valid, 20.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5183 mSDsluCounter, 6747 SdHoareTripleChecker+Invalid, 16.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 335 mSDsCounter, 2673 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18355 IncrementalHoareTripleChecker+Invalid, 21028 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2673 mSolverCounterUnsat, 6412 mSDtfsCounter, 18355 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1462 GetRequests, 1423 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15795occurred in iteration=15, InterpolantAutomatonStates: 72, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.4s AutomataMinimizationTime, 20 MinimizatonAttempts, 8611 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 11.3s InterpolantComputationTime, 13406 NumberOfCodeBlocks, 13406 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 13384 ConstructedInterpolants, 0 QuantifiedInterpolants, 33398 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1649 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 22 InterpolantComputations, 20 PerfectInterpolantSequences, 20448/21165 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown