/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/Problem17_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 17:34:52,321 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 17:34:52,397 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 17:34:52,402 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 17:34:52,402 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 17:34:52,436 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 17:34:52,437 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 17:34:52,437 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 17:34:52,438 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 17:34:52,441 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 17:34:52,442 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 17:34:52,442 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 17:34:52,443 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 17:34:52,444 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 17:34:52,444 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 17:34:52,444 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 17:34:52,445 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 17:34:52,445 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 17:34:52,445 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 17:34:52,445 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 17:34:52,446 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 17:34:52,446 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 17:34:52,446 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 17:34:52,446 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 17:34:52,447 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 17:34:52,447 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 17:34:52,447 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 17:34:52,447 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 17:34:52,448 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 17:34:52,448 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 17:34:52,449 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 17:34:52,449 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 17:34:52,449 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 17:34:52,450 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 17:34:52,450 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 17:34:52,450 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 17:34:52,450 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 17:34:52,450 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 17:34:52,451 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 17:34:52,451 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 17:34:52,451 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 17:34:52,451 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 17:34:52,451 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 17:34:52,451 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 17:34:52,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 17:34:52,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 17:34:52,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 17:34:52,713 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 17:34:52,713 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 17:34:52,714 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label29.c [2023-12-20 17:34:53,942 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 17:34:54,345 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 17:34:54,347 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label29.c [2023-12-20 17:34:54,371 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd8032ebb/0a564ba2f5cd417a99db8cdf904fe1b8/FLAG8bb3fd834 [2023-12-20 17:34:54,386 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd8032ebb/0a564ba2f5cd417a99db8cdf904fe1b8 [2023-12-20 17:34:54,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 17:34:54,391 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 17:34:54,393 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 17:34:54,393 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 17:34:54,398 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 17:34:54,398 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 05:34:54" (1/1) ... [2023-12-20 17:34:54,399 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f3481b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:34:54, skipping insertion in model container [2023-12-20 17:34:54,418 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 05:34:54" (1/1) ... [2023-12-20 17:34:54,560 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 17:34:54,829 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label29.c[9671,9684] [2023-12-20 17:34:55,354 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 17:34:55,365 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 17:34:55,395 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label29.c[9671,9684] [2023-12-20 17:34:55,599 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 17:34:55,617 INFO L206 MainTranslator]: Completed translation [2023-12-20 17:34:55,617 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:34:55 WrapperNode [2023-12-20 17:34:55,617 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 17:34:55,619 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 17:34:55,619 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 17:34:55,619 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 17:34:55,625 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:34:55" (1/1) ... [2023-12-20 17:34:55,678 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:34:55" (1/1) ... [2023-12-20 17:34:55,890 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2023-12-20 17:34:55,890 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 17:34:55,891 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 17:34:55,891 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 17:34:55,891 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 17:34:55,900 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:34:55" (1/1) ... [2023-12-20 17:34:55,900 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:34:55" (1/1) ... [2023-12-20 17:34:55,977 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:34:55" (1/1) ... [2023-12-20 17:34:56,155 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 17:34:56,155 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:34:55" (1/1) ... [2023-12-20 17:34:56,156 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:34:55" (1/1) ... [2023-12-20 17:34:56,295 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:34:55" (1/1) ... [2023-12-20 17:34:56,320 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:34:55" (1/1) ... [2023-12-20 17:34:56,341 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:34:55" (1/1) ... [2023-12-20 17:34:56,356 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:34:55" (1/1) ... [2023-12-20 17:34:56,404 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 17:34:56,406 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 17:34:56,406 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 17:34:56,406 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 17:34:56,407 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:34:55" (1/1) ... [2023-12-20 17:34:56,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 17:34:56,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:34:56,434 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 17:34:56,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 17:34:56,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 17:34:56,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 17:34:56,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 17:34:56,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 17:34:56,530 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 17:34:56,532 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 17:34:59,673 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 17:34:59,713 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 17:34:59,713 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 17:34:59,713 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 05:34:59 BoogieIcfgContainer [2023-12-20 17:34:59,713 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 17:34:59,716 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 17:34:59,716 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 17:34:59,718 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 17:34:59,719 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 05:34:54" (1/3) ... [2023-12-20 17:34:59,719 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24d41b15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 05:34:59, skipping insertion in model container [2023-12-20 17:34:59,719 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:34:55" (2/3) ... [2023-12-20 17:34:59,720 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24d41b15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 05:34:59, skipping insertion in model container [2023-12-20 17:34:59,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 05:34:59" (3/3) ... [2023-12-20 17:34:59,721 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label29.c [2023-12-20 17:34:59,737 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 17:34:59,737 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 17:34:59,789 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 17:34:59,794 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;@4d17c333, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 17:34:59,795 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 17:34:59,800 INFO L276 IsEmpty]: Start isEmpty. Operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:34:59,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-20 17:34:59,807 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:34:59,808 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:34:59,808 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:34:59,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:34:59,813 INFO L85 PathProgramCache]: Analyzing trace with hash 838506719, now seen corresponding path program 1 times [2023-12-20 17:34:59,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:34:59,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779264939] [2023-12-20 17:34:59,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:34:59,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:34:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:34:59,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:34:59,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:34:59,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779264939] [2023-12-20 17:34:59,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779264939] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:34:59,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:34:59,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:35:00,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246908252] [2023-12-20 17:35:00,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:35:00,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 17:35:00,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:35:00,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 17:35:00,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 17:35:00,040 INFO L87 Difference]: Start difference. First operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:00,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:35:00,113 INFO L93 Difference]: Finished difference Result 1055 states and 1999 transitions. [2023-12-20 17:35:00,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 17:35:00,115 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2023-12-20 17:35:00,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:35:00,127 INFO L225 Difference]: With dead ends: 1055 [2023-12-20 17:35:00,128 INFO L226 Difference]: Without dead ends: 526 [2023-12-20 17:35:00,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 17:35:00,138 INFO L413 NwaCegarLoop]: 935 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:35:00,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 935 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 17:35:00,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2023-12-20 17:35:00,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2023-12-20 17:35:00,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 1.7809523809523808) internal successors, (935), 525 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:00,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 935 transitions. [2023-12-20 17:35:00,212 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 935 transitions. Word has length 64 [2023-12-20 17:35:00,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:35:00,212 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 935 transitions. [2023-12-20 17:35:00,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:00,213 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 935 transitions. [2023-12-20 17:35:00,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-20 17:35:00,214 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:35:00,214 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:35:00,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 17:35:00,215 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:35:00,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:35:00,215 INFO L85 PathProgramCache]: Analyzing trace with hash 994496785, now seen corresponding path program 1 times [2023-12-20 17:35:00,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:35:00,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600983996] [2023-12-20 17:35:00,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:35:00,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:35:00,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:35:00,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:35:00,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:35:00,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600983996] [2023-12-20 17:35:00,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600983996] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:35:00,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:35:00,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:35:00,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924928463] [2023-12-20 17:35:00,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:35:00,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:35:00,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:35:00,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:35:00,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:35:00,447 INFO L87 Difference]: Start difference. First operand 526 states and 935 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:02,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:35:02,846 INFO L93 Difference]: Finished difference Result 1499 states and 2693 transitions. [2023-12-20 17:35:02,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:35:02,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2023-12-20 17:35:02,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:35:02,852 INFO L225 Difference]: With dead ends: 1499 [2023-12-20 17:35:02,852 INFO L226 Difference]: Without dead ends: 974 [2023-12-20 17:35:02,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:35:02,855 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 409 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1341 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 1666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:35:02,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 495 Invalid, 1666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1341 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 17:35:02,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2023-12-20 17:35:02,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 971. [2023-12-20 17:35:02,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.5082474226804123) internal successors, (1463), 970 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:02,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1463 transitions. [2023-12-20 17:35:02,887 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1463 transitions. Word has length 64 [2023-12-20 17:35:02,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:35:02,887 INFO L495 AbstractCegarLoop]: Abstraction has 971 states and 1463 transitions. [2023-12-20 17:35:02,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:02,888 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1463 transitions. [2023-12-20 17:35:02,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-20 17:35:02,891 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:35:02,892 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:35:02,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 17:35:02,892 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:35:02,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:35:02,893 INFO L85 PathProgramCache]: Analyzing trace with hash -14249244, now seen corresponding path program 1 times [2023-12-20 17:35:02,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:35:02,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252896317] [2023-12-20 17:35:02,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:35:02,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:35:02,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:35:03,281 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:35:03,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:35:03,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252896317] [2023-12-20 17:35:03,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252896317] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:35:03,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:35:03,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:35:03,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745530616] [2023-12-20 17:35:03,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:35:03,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:35:03,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:35:03,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:35:03,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:35:03,284 INFO L87 Difference]: Start difference. First operand 971 states and 1463 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:05,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:35:05,505 INFO L93 Difference]: Finished difference Result 2813 states and 4241 transitions. [2023-12-20 17:35:05,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:35:05,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 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 134 [2023-12-20 17:35:05,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:35:05,513 INFO L225 Difference]: With dead ends: 2813 [2023-12-20 17:35:05,513 INFO L226 Difference]: Without dead ends: 1843 [2023-12-20 17:35:05,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:35:05,521 INFO L413 NwaCegarLoop]: 851 mSDtfsCounter, 426 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 1698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:35:05,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 918 Invalid, 1698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1284 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-20 17:35:05,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2023-12-20 17:35:05,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1841. [2023-12-20 17:35:05,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1840 states have (on average 1.3603260869565217) internal successors, (2503), 1840 states have internal predecessors, (2503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:05,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 2503 transitions. [2023-12-20 17:35:05,566 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 2503 transitions. Word has length 134 [2023-12-20 17:35:05,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:35:05,571 INFO L495 AbstractCegarLoop]: Abstraction has 1841 states and 2503 transitions. [2023-12-20 17:35:05,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:05,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 2503 transitions. [2023-12-20 17:35:05,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-20 17:35:05,580 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:35:05,581 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:35:05,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 17:35:05,581 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:35:05,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:35:05,582 INFO L85 PathProgramCache]: Analyzing trace with hash -237472223, now seen corresponding path program 1 times [2023-12-20 17:35:05,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:35:05,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887677855] [2023-12-20 17:35:05,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:35:05,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:35:05,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:35:05,737 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:35:05,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:35:05,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887677855] [2023-12-20 17:35:05,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887677855] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:35:05,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:35:05,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:35:05,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165284204] [2023-12-20 17:35:05,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:35:05,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:35:05,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:35:05,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:35:05,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:35:05,741 INFO L87 Difference]: Start difference. First operand 1841 states and 2503 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:07,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:35:07,751 INFO L93 Difference]: Finished difference Result 5394 states and 7325 transitions. [2023-12-20 17:35:07,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:35:07,751 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 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 156 [2023-12-20 17:35:07,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:35:07,761 INFO L225 Difference]: With dead ends: 5394 [2023-12-20 17:35:07,761 INFO L226 Difference]: Without dead ends: 2700 [2023-12-20 17:35:07,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:35:07,775 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 368 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-20 17:35:07,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 589 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-20 17:35:07,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2700 states. [2023-12-20 17:35:07,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2700 to 2700. [2023-12-20 17:35:07,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2700 states, 2699 states have (on average 1.1919229344201556) internal successors, (3217), 2699 states have internal predecessors, (3217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:07,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2700 states to 2700 states and 3217 transitions. [2023-12-20 17:35:07,848 INFO L78 Accepts]: Start accepts. Automaton has 2700 states and 3217 transitions. Word has length 156 [2023-12-20 17:35:07,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:35:07,850 INFO L495 AbstractCegarLoop]: Abstraction has 2700 states and 3217 transitions. [2023-12-20 17:35:07,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:07,850 INFO L276 IsEmpty]: Start isEmpty. Operand 2700 states and 3217 transitions. [2023-12-20 17:35:07,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-12-20 17:35:07,857 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:35:07,857 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:35:07,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 17:35:07,857 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:35:07,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:35:07,858 INFO L85 PathProgramCache]: Analyzing trace with hash -253747282, now seen corresponding path program 1 times [2023-12-20 17:35:07,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:35:07,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699931625] [2023-12-20 17:35:07,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:35:07,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:35:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:35:08,112 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 193 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:35:08,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:35:08,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699931625] [2023-12-20 17:35:08,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699931625] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:35:08,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:35:08,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:35:08,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506200829] [2023-12-20 17:35:08,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:35:08,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:35:08,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:35:08,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:35:08,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:35:08,116 INFO L87 Difference]: Start difference. First operand 2700 states and 3217 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:09,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:35:09,849 INFO L93 Difference]: Finished difference Result 7107 states and 8597 transitions. [2023-12-20 17:35:09,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:35:09,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 216 [2023-12-20 17:35:09,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:35:09,866 INFO L225 Difference]: With dead ends: 7107 [2023-12-20 17:35:09,867 INFO L226 Difference]: Without dead ends: 4408 [2023-12-20 17:35:09,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:35:09,872 INFO L413 NwaCegarLoop]: 724 mSDtfsCounter, 496 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:35:09,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 781 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 17:35:09,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4408 states. [2023-12-20 17:35:09,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4408 to 4408. [2023-12-20 17:35:09,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4408 states, 4407 states have (on average 1.1706376219650556) internal successors, (5159), 4407 states have internal predecessors, (5159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:09,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4408 states to 4408 states and 5159 transitions. [2023-12-20 17:35:09,949 INFO L78 Accepts]: Start accepts. Automaton has 4408 states and 5159 transitions. Word has length 216 [2023-12-20 17:35:09,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:35:09,949 INFO L495 AbstractCegarLoop]: Abstraction has 4408 states and 5159 transitions. [2023-12-20 17:35:09,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:09,950 INFO L276 IsEmpty]: Start isEmpty. Operand 4408 states and 5159 transitions. [2023-12-20 17:35:09,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-12-20 17:35:09,953 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:35:09,954 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:35:09,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 17:35:09,954 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:35:09,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:35:09,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1072420499, now seen corresponding path program 1 times [2023-12-20 17:35:09,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:35:09,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816761574] [2023-12-20 17:35:09,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:35:09,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:35:10,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:35:10,192 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-20 17:35:10,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:35:10,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816761574] [2023-12-20 17:35:10,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816761574] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:35:10,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:35:10,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:35:10,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205832187] [2023-12-20 17:35:10,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:35:10,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:35:10,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:35:10,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:35:10,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:35:10,195 INFO L87 Difference]: Start difference. First operand 4408 states and 5159 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:11,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:35:11,936 INFO L93 Difference]: Finished difference Result 10935 states and 12969 transitions. [2023-12-20 17:35:11,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:35:11,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 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 218 [2023-12-20 17:35:11,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:35:11,959 INFO L225 Difference]: With dead ends: 10935 [2023-12-20 17:35:11,959 INFO L226 Difference]: Without dead ends: 6527 [2023-12-20 17:35:11,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:35:11,967 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 385 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 1490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:35:11,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 442 Invalid, 1490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1216 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 17:35:11,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6527 states. [2023-12-20 17:35:12,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6527 to 4381. [2023-12-20 17:35:12,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4381 states, 4380 states have (on average 1.1684931506849314) internal successors, (5118), 4380 states have internal predecessors, (5118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:12,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4381 states to 4381 states and 5118 transitions. [2023-12-20 17:35:12,060 INFO L78 Accepts]: Start accepts. Automaton has 4381 states and 5118 transitions. Word has length 218 [2023-12-20 17:35:12,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:35:12,060 INFO L495 AbstractCegarLoop]: Abstraction has 4381 states and 5118 transitions. [2023-12-20 17:35:12,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:12,061 INFO L276 IsEmpty]: Start isEmpty. Operand 4381 states and 5118 transitions. [2023-12-20 17:35:12,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2023-12-20 17:35:12,064 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:35:12,064 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:35:12,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 17:35:12,064 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:35:12,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:35:12,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1064574093, now seen corresponding path program 1 times [2023-12-20 17:35:12,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:35:12,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322280056] [2023-12-20 17:35:12,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:35:12,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:35:12,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:35:12,379 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-20 17:35:12,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:35:12,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322280056] [2023-12-20 17:35:12,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322280056] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:35:12,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:35:12,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:35:12,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624610467] [2023-12-20 17:35:12,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:35:12,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:35:12,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:35:12,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:35:12,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:35:12,382 INFO L87 Difference]: Start difference. First operand 4381 states and 5118 transitions. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:14,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:35:14,276 INFO L93 Difference]: Finished difference Result 10044 states and 11705 transitions. [2023-12-20 17:35:14,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:35:14,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 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 284 [2023-12-20 17:35:14,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:35:14,299 INFO L225 Difference]: With dead ends: 10044 [2023-12-20 17:35:14,299 INFO L226 Difference]: Without dead ends: 5664 [2023-12-20 17:35:14,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:35:14,306 INFO L413 NwaCegarLoop]: 831 mSDtfsCounter, 371 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1343 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-20 17:35:14,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 891 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1343 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-20 17:35:14,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5664 states. [2023-12-20 17:35:14,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5664 to 5233. [2023-12-20 17:35:14,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5233 states, 5232 states have (on average 1.1588302752293578) internal successors, (6063), 5232 states have internal predecessors, (6063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:14,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5233 states to 5233 states and 6063 transitions. [2023-12-20 17:35:14,400 INFO L78 Accepts]: Start accepts. Automaton has 5233 states and 6063 transitions. Word has length 284 [2023-12-20 17:35:14,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:35:14,400 INFO L495 AbstractCegarLoop]: Abstraction has 5233 states and 6063 transitions. [2023-12-20 17:35:14,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:14,401 INFO L276 IsEmpty]: Start isEmpty. Operand 5233 states and 6063 transitions. [2023-12-20 17:35:14,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2023-12-20 17:35:14,404 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:35:14,404 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:35:14,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 17:35:14,405 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:35:14,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:35:14,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1277405007, now seen corresponding path program 1 times [2023-12-20 17:35:14,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:35:14,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425892922] [2023-12-20 17:35:14,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:35:14,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:35:14,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:35:14,595 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-20 17:35:14,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:35:14,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425892922] [2023-12-20 17:35:14,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425892922] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:35:14,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:35:14,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:35:14,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085997857] [2023-12-20 17:35:14,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:35:14,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:35:14,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:35:14,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:35:14,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:35:14,597 INFO L87 Difference]: Start difference. First operand 5233 states and 6063 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:16,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:35:16,395 INFO L93 Difference]: Finished difference Result 12592 states and 14782 transitions. [2023-12-20 17:35:16,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:35:16,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 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 296 [2023-12-20 17:35:16,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:35:16,417 INFO L225 Difference]: With dead ends: 12592 [2023-12-20 17:35:16,417 INFO L226 Difference]: Without dead ends: 6935 [2023-12-20 17:35:16,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:35:16,424 INFO L413 NwaCegarLoop]: 776 mSDtfsCounter, 383 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:35:16,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 844 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 17:35:16,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6935 states. [2023-12-20 17:35:16,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6935 to 6935. [2023-12-20 17:35:16,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6935 states, 6934 states have (on average 1.1322468993366022) internal successors, (7851), 6934 states have internal predecessors, (7851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:16,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6935 states to 6935 states and 7851 transitions. [2023-12-20 17:35:16,530 INFO L78 Accepts]: Start accepts. Automaton has 6935 states and 7851 transitions. Word has length 296 [2023-12-20 17:35:16,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:35:16,531 INFO L495 AbstractCegarLoop]: Abstraction has 6935 states and 7851 transitions. [2023-12-20 17:35:16,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:16,531 INFO L276 IsEmpty]: Start isEmpty. Operand 6935 states and 7851 transitions. [2023-12-20 17:35:16,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2023-12-20 17:35:16,536 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:35:16,536 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:35:16,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 17:35:16,536 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:35:16,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:35:16,537 INFO L85 PathProgramCache]: Analyzing trace with hash -738389748, now seen corresponding path program 1 times [2023-12-20 17:35:16,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:35:16,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825426826] [2023-12-20 17:35:16,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:35:16,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:35:16,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:35:16,744 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2023-12-20 17:35:16,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:35:16,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825426826] [2023-12-20 17:35:16,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825426826] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:35:16,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:35:16,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:35:16,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440375346] [2023-12-20 17:35:16,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:35:16,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:35:16,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:35:16,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:35:16,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:35:16,747 INFO L87 Difference]: Start difference. First operand 6935 states and 7851 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:18,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:35:18,564 INFO L93 Difference]: Finished difference Result 17278 states and 19682 transitions. [2023-12-20 17:35:18,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:35:18,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 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 336 [2023-12-20 17:35:18,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:35:18,585 INFO L225 Difference]: With dead ends: 17278 [2023-12-20 17:35:18,585 INFO L226 Difference]: Without dead ends: 9467 [2023-12-20 17:35:18,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:35:18,596 INFO L413 NwaCegarLoop]: 608 mSDtfsCounter, 480 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1184 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 1532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 1184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:35:18,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 637 Invalid, 1532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 1184 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 17:35:18,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9467 states. [2023-12-20 17:35:18,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9467 to 9037. [2023-12-20 17:35:18,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9037 states, 9036 states have (on average 1.1249446657813191) internal successors, (10165), 9036 states have internal predecessors, (10165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:18,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9037 states to 9037 states and 10165 transitions. [2023-12-20 17:35:18,762 INFO L78 Accepts]: Start accepts. Automaton has 9037 states and 10165 transitions. Word has length 336 [2023-12-20 17:35:18,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:35:18,763 INFO L495 AbstractCegarLoop]: Abstraction has 9037 states and 10165 transitions. [2023-12-20 17:35:18,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:18,763 INFO L276 IsEmpty]: Start isEmpty. Operand 9037 states and 10165 transitions. [2023-12-20 17:35:18,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2023-12-20 17:35:18,771 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:35:18,772 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:35:18,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 17:35:18,772 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:35:18,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:35:18,773 INFO L85 PathProgramCache]: Analyzing trace with hash -246926324, now seen corresponding path program 1 times [2023-12-20 17:35:18,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:35:18,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637045374] [2023-12-20 17:35:18,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:35:18,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:35:18,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:35:19,200 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:35:19,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:35:19,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637045374] [2023-12-20 17:35:19,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637045374] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:35:19,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:35:19,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:35:19,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849443872] [2023-12-20 17:35:19,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:35:19,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:35:19,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:35:19,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:35:19,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:35:19,206 INFO L87 Difference]: Start difference. First operand 9037 states and 10165 transitions. Second operand has 4 states, 4 states have (on average 100.75) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:21,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:35:21,639 INFO L93 Difference]: Finished difference Result 23200 states and 26056 transitions. [2023-12-20 17:35:21,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:35:21,639 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 100.75) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 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 403 [2023-12-20 17:35:21,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:35:21,664 INFO L225 Difference]: With dead ends: 23200 [2023-12-20 17:35:21,664 INFO L226 Difference]: Without dead ends: 13739 [2023-12-20 17:35:21,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:35:21,676 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 586 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 2302 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 2559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 2302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:35:21,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [586 Valid, 176 Invalid, 2559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 2302 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 17:35:21,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13739 states. [2023-12-20 17:35:21,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13739 to 13736. [2023-12-20 17:35:21,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13736 states, 13735 states have (on average 1.1253003276301419) internal successors, (15456), 13735 states have internal predecessors, (15456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:21,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13736 states to 13736 states and 15456 transitions. [2023-12-20 17:35:21,882 INFO L78 Accepts]: Start accepts. Automaton has 13736 states and 15456 transitions. Word has length 403 [2023-12-20 17:35:21,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:35:21,883 INFO L495 AbstractCegarLoop]: Abstraction has 13736 states and 15456 transitions. [2023-12-20 17:35:21,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.75) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:21,883 INFO L276 IsEmpty]: Start isEmpty. Operand 13736 states and 15456 transitions. [2023-12-20 17:35:21,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2023-12-20 17:35:21,893 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:35:21,894 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:35:21,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 17:35:21,894 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:35:21,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:35:21,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1841968050, now seen corresponding path program 1 times [2023-12-20 17:35:21,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:35:21,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794022645] [2023-12-20 17:35:21,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:35:21,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:35:21,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:35:22,171 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2023-12-20 17:35:22,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:35:22,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794022645] [2023-12-20 17:35:22,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794022645] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:35:22,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:35:22,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:35:22,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487815473] [2023-12-20 17:35:22,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:35:22,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:35:22,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:35:22,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:35:22,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:35:22,173 INFO L87 Difference]: Start difference. First operand 13736 states and 15456 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:23,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:35:23,618 INFO L93 Difference]: Finished difference Result 30449 states and 34315 transitions. [2023-12-20 17:35:23,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:35:23,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 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 407 [2023-12-20 17:35:23,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:35:23,646 INFO L225 Difference]: With dead ends: 30449 [2023-12-20 17:35:23,647 INFO L226 Difference]: Without dead ends: 16714 [2023-12-20 17:35:23,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:35:23,660 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 418 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 1329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:35:23,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 286 Invalid, 1329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 17:35:23,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16714 states. [2023-12-20 17:35:23,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16714 to 15435. [2023-12-20 17:35:23,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15435 states, 15434 states have (on average 1.1231696255021382) internal successors, (17335), 15434 states have internal predecessors, (17335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:23,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15435 states to 15435 states and 17335 transitions. [2023-12-20 17:35:23,897 INFO L78 Accepts]: Start accepts. Automaton has 15435 states and 17335 transitions. Word has length 407 [2023-12-20 17:35:23,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:35:23,898 INFO L495 AbstractCegarLoop]: Abstraction has 15435 states and 17335 transitions. [2023-12-20 17:35:23,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:23,899 INFO L276 IsEmpty]: Start isEmpty. Operand 15435 states and 17335 transitions. [2023-12-20 17:35:23,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2023-12-20 17:35:23,928 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:35:23,929 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:35:23,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 17:35:23,929 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:35:23,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:35:23,930 INFO L85 PathProgramCache]: Analyzing trace with hash -516710105, now seen corresponding path program 1 times [2023-12-20 17:35:23,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:35:23,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500846759] [2023-12-20 17:35:23,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:35:23,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:35:24,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:35:24,749 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 286 proven. 78 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-20 17:35:24,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:35:24,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500846759] [2023-12-20 17:35:24,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500846759] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:35:24,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511149617] [2023-12-20 17:35:24,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:35:24,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:35:24,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:35:24,756 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:35:24,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 17:35:24,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:35:24,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 17:35:25,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:35:25,251 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 286 proven. 78 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-20 17:35:25,251 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 17:35:25,513 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 364 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-20 17:35:25,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511149617] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-20 17:35:25,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-20 17:35:25,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2023-12-20 17:35:25,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528365826] [2023-12-20 17:35:25,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:35:25,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:35:25,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:35:25,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:35:25,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-20 17:35:25,516 INFO L87 Difference]: Start difference. First operand 15435 states and 17335 transitions. Second operand has 4 states, 4 states have (on average 144.75) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:28,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:35:28,132 INFO L93 Difference]: Finished difference Result 41545 states and 46945 transitions. [2023-12-20 17:35:28,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:35:28,133 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 144.75) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 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 641 [2023-12-20 17:35:28,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:35:28,168 INFO L225 Difference]: With dead ends: 41545 [2023-12-20 17:35:28,168 INFO L226 Difference]: Without dead ends: 26111 [2023-12-20 17:35:28,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1283 GetRequests, 1279 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-20 17:35:28,180 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 828 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 2223 mSolverCounterSat, 455 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 2678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 455 IncrementalHoareTripleChecker+Valid, 2223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:35:28,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 173 Invalid, 2678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [455 Valid, 2223 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 17:35:28,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26111 states. [2023-12-20 17:35:28,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26111 to 24404. [2023-12-20 17:35:28,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24404 states, 24403 states have (on average 1.1314592468139164) internal successors, (27611), 24403 states have internal predecessors, (27611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:28,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24404 states to 24404 states and 27611 transitions. [2023-12-20 17:35:28,485 INFO L78 Accepts]: Start accepts. Automaton has 24404 states and 27611 transitions. Word has length 641 [2023-12-20 17:35:28,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:35:28,485 INFO L495 AbstractCegarLoop]: Abstraction has 24404 states and 27611 transitions. [2023-12-20 17:35:28,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 144.75) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:28,486 INFO L276 IsEmpty]: Start isEmpty. Operand 24404 states and 27611 transitions. [2023-12-20 17:35:28,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2023-12-20 17:35:28,513 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:35:28,514 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:35:28,523 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 17:35:28,720 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 [2023-12-20 17:35:28,721 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:35:28,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:35:28,721 INFO L85 PathProgramCache]: Analyzing trace with hash 764791935, now seen corresponding path program 1 times [2023-12-20 17:35:28,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:35:28,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894456143] [2023-12-20 17:35:28,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:35:28,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:35:28,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:35:29,423 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 375 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-20 17:35:29,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:35:29,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894456143] [2023-12-20 17:35:29,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894456143] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:35:29,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:35:29,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:35:29,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529549149] [2023-12-20 17:35:29,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:35:29,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:35:29,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:35:29,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:35:29,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:35:29,427 INFO L87 Difference]: Start difference. First operand 24404 states and 27611 transitions. Second operand has 3 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:30,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:35:30,983 INFO L93 Difference]: Finished difference Result 55625 states and 63146 transitions. [2023-12-20 17:35:30,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:35:30,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 0 states have call successors, (0), 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 667 [2023-12-20 17:35:30,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:35:31,034 INFO L225 Difference]: With dead ends: 55625 [2023-12-20 17:35:31,034 INFO L226 Difference]: Without dead ends: 30790 [2023-12-20 17:35:31,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:35:31,059 INFO L413 NwaCegarLoop]: 571 mSDtfsCounter, 100 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 1401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:35:31,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 608 Invalid, 1401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 1187 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 17:35:31,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30790 states. [2023-12-20 17:35:31,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30790 to 29934. [2023-12-20 17:35:31,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29934 states, 29933 states have (on average 1.1269501887548858) internal successors, (33733), 29933 states have internal predecessors, (33733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:31,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29934 states to 29934 states and 33733 transitions. [2023-12-20 17:35:31,616 INFO L78 Accepts]: Start accepts. Automaton has 29934 states and 33733 transitions. Word has length 667 [2023-12-20 17:35:31,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:35:31,617 INFO L495 AbstractCegarLoop]: Abstraction has 29934 states and 33733 transitions. [2023-12-20 17:35:31,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:31,618 INFO L276 IsEmpty]: Start isEmpty. Operand 29934 states and 33733 transitions. [2023-12-20 17:35:31,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 709 [2023-12-20 17:35:31,645 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:35:31,646 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:35:31,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 17:35:31,647 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:35:31,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:35:31,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1375130662, now seen corresponding path program 1 times [2023-12-20 17:35:31,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:35:31,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493573209] [2023-12-20 17:35:31,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:35:31,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:35:31,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:35:32,057 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 589 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2023-12-20 17:35:32,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:35:32,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493573209] [2023-12-20 17:35:32,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493573209] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:35:32,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:35:32,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:35:32,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336744289] [2023-12-20 17:35:32,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:35:32,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:35:32,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:35:32,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:35:32,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:35:32,060 INFO L87 Difference]: Start difference. First operand 29934 states and 33733 transitions. Second operand has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:33,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:35:33,671 INFO L93 Difference]: Finished difference Result 65823 states and 74203 transitions. [2023-12-20 17:35:33,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:35:33,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 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 708 [2023-12-20 17:35:33,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:35:33,720 INFO L225 Difference]: With dead ends: 65823 [2023-12-20 17:35:33,720 INFO L226 Difference]: Without dead ends: 35890 [2023-12-20 17:35:33,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:35:33,746 INFO L413 NwaCegarLoop]: 627 mSDtfsCounter, 488 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 1312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:35:33,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 668 Invalid, 1312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 1134 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 17:35:33,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35890 states. [2023-12-20 17:35:34,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35890 to 35886. [2023-12-20 17:35:34,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35886 states, 35885 states have (on average 1.1147833356555663) internal successors, (40004), 35885 states have internal predecessors, (40004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:34,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35886 states to 35886 states and 40004 transitions. [2023-12-20 17:35:34,413 INFO L78 Accepts]: Start accepts. Automaton has 35886 states and 40004 transitions. Word has length 708 [2023-12-20 17:35:34,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:35:34,414 INFO L495 AbstractCegarLoop]: Abstraction has 35886 states and 40004 transitions. [2023-12-20 17:35:34,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:34,414 INFO L276 IsEmpty]: Start isEmpty. Operand 35886 states and 40004 transitions. [2023-12-20 17:35:34,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 788 [2023-12-20 17:35:34,447 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:35:34,448 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:35:34,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 17:35:34,448 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:35:34,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:35:34,449 INFO L85 PathProgramCache]: Analyzing trace with hash -782933699, now seen corresponding path program 1 times [2023-12-20 17:35:34,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:35:34,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577646539] [2023-12-20 17:35:34,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:35:34,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:35:34,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:35:35,563 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 762 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-20 17:35:35,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:35:35,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577646539] [2023-12-20 17:35:35,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577646539] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:35:35,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:35:35,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:35:35,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107353866] [2023-12-20 17:35:35,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:35:35,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:35:35,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:35:35,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:35:35,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:35:35,569 INFO L87 Difference]: Start difference. First operand 35886 states and 40004 transitions. Second operand has 4 states, 4 states have (on average 181.25) internal successors, (725), 4 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:38,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:35:38,130 INFO L93 Difference]: Finished difference Result 97357 states and 108371 transitions. [2023-12-20 17:35:38,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:35:38,131 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 181.25) internal successors, (725), 4 states have internal predecessors, (725), 0 states have call successors, (0), 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 787 [2023-12-20 17:35:38,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:35:38,205 INFO L225 Difference]: With dead ends: 97357 [2023-12-20 17:35:38,205 INFO L226 Difference]: Without dead ends: 61472 [2023-12-20 17:35:38,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:35:38,237 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 756 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 2294 mSolverCounterSat, 428 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 2722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 428 IncrementalHoareTripleChecker+Valid, 2294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:35:38,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [756 Valid, 187 Invalid, 2722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [428 Valid, 2294 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-20 17:35:38,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61472 states. [2023-12-20 17:35:38,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61472 to 58912. [2023-12-20 17:35:38,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58912 states, 58911 states have (on average 1.1089440002715962) internal successors, (65329), 58911 states have internal predecessors, (65329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:39,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58912 states to 58912 states and 65329 transitions. [2023-12-20 17:35:39,214 INFO L78 Accepts]: Start accepts. Automaton has 58912 states and 65329 transitions. Word has length 787 [2023-12-20 17:35:39,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:35:39,219 INFO L495 AbstractCegarLoop]: Abstraction has 58912 states and 65329 transitions. [2023-12-20 17:35:39,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 181.25) internal successors, (725), 4 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:39,219 INFO L276 IsEmpty]: Start isEmpty. Operand 58912 states and 65329 transitions. [2023-12-20 17:35:39,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 819 [2023-12-20 17:35:39,258 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:35:39,260 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:35:39,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 17:35:39,260 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:35:39,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:35:39,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1924182937, now seen corresponding path program 1 times [2023-12-20 17:35:39,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:35:39,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679530602] [2023-12-20 17:35:39,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:35:39,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:35:39,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:35:39,914 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 524 proven. 0 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2023-12-20 17:35:39,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:35:39,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679530602] [2023-12-20 17:35:39,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679530602] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:35:39,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:35:39,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:35:39,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521821660] [2023-12-20 17:35:39,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:35:39,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:35:39,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:35:39,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:35:39,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:35:39,917 INFO L87 Difference]: Start difference. First operand 58912 states and 65329 transitions. Second operand has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 2 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:40,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:35:40,908 INFO L93 Difference]: Finished difference Result 116960 states and 129595 transitions. [2023-12-20 17:35:40,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:35:40,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 2 states have internal predecessors, (551), 0 states have call successors, (0), 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 818 [2023-12-20 17:35:40,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:35:40,982 INFO L225 Difference]: With dead ends: 116960 [2023-12-20 17:35:40,983 INFO L226 Difference]: Without dead ends: 58048 [2023-12-20 17:35:41,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:35:41,021 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 591 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:35:41,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [591 Valid, 89 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 17:35:41,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58048 states. [2023-12-20 17:35:41,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58048 to 58047. [2023-12-20 17:35:41,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58047 states, 58046 states have (on average 1.106794611170451) internal successors, (64245), 58046 states have internal predecessors, (64245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:41,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58047 states to 58047 states and 64245 transitions. [2023-12-20 17:35:41,898 INFO L78 Accepts]: Start accepts. Automaton has 58047 states and 64245 transitions. Word has length 818 [2023-12-20 17:35:41,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:35:41,899 INFO L495 AbstractCegarLoop]: Abstraction has 58047 states and 64245 transitions. [2023-12-20 17:35:41,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 2 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:41,899 INFO L276 IsEmpty]: Start isEmpty. Operand 58047 states and 64245 transitions. [2023-12-20 17:35:41,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 843 [2023-12-20 17:35:41,938 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:35:41,939 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:35:41,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 17:35:41,939 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:35:41,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:35:41,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1770295360, now seen corresponding path program 1 times [2023-12-20 17:35:41,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:35:41,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034139117] [2023-12-20 17:35:41,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:35:41,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:35:42,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:35:42,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 691 proven. 0 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2023-12-20 17:35:42,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:35:42,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034139117] [2023-12-20 17:35:42,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034139117] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:35:42,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:35:42,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:35:42,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706344813] [2023-12-20 17:35:42,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:35:42,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:35:42,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:35:42,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:35:42,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:35:42,691 INFO L87 Difference]: Start difference. First operand 58047 states and 64245 transitions. Second operand has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:44,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:35:44,584 INFO L93 Difference]: Finished difference Result 140332 states and 155037 transitions. [2023-12-20 17:35:44,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:35:44,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 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 842 [2023-12-20 17:35:44,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:35:44,682 INFO L225 Difference]: With dead ends: 140332 [2023-12-20 17:35:44,682 INFO L226 Difference]: Without dead ends: 81860 [2023-12-20 17:35:44,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:35:44,730 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 469 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 1384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:35:44,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 226 Invalid, 1384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 17:35:44,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81860 states. [2023-12-20 17:35:45,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81860 to 79721. [2023-12-20 17:35:45,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79721 states, 79720 states have (on average 1.0953587556447566) internal successors, (87322), 79720 states have internal predecessors, (87322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:45,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79721 states to 79721 states and 87322 transitions. [2023-12-20 17:35:45,780 INFO L78 Accepts]: Start accepts. Automaton has 79721 states and 87322 transitions. Word has length 842 [2023-12-20 17:35:45,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:35:45,781 INFO L495 AbstractCegarLoop]: Abstraction has 79721 states and 87322 transitions. [2023-12-20 17:35:45,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:45,781 INFO L276 IsEmpty]: Start isEmpty. Operand 79721 states and 87322 transitions. [2023-12-20 17:35:45,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 859 [2023-12-20 17:35:45,818 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:35:45,819 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:35:45,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 17:35:45,819 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:35:45,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:35:45,820 INFO L85 PathProgramCache]: Analyzing trace with hash -693531297, now seen corresponding path program 1 times [2023-12-20 17:35:45,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:35:45,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582885587] [2023-12-20 17:35:45,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:35:45,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:35:46,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:35:47,182 INFO L134 CoverageAnalysis]: Checked inductivity of 909 backedges. 627 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2023-12-20 17:35:47,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:35:47,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582885587] [2023-12-20 17:35:47,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582885587] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:35:47,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:35:47,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:35:47,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544189148] [2023-12-20 17:35:47,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:35:47,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:35:47,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:35:47,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:35:47,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:35:47,184 INFO L87 Difference]: Start difference. First operand 79721 states and 87322 transitions. Second operand has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:50,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:35:50,103 INFO L93 Difference]: Finished difference Result 168807 states and 184635 transitions. [2023-12-20 17:35:50,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:35:50,104 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 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 858 [2023-12-20 17:35:50,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:35:50,213 INFO L225 Difference]: With dead ends: 168807 [2023-12-20 17:35:50,213 INFO L226 Difference]: Without dead ends: 89087 [2023-12-20 17:35:50,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:35:50,417 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 500 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 2765 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 3009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 2765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:35:50,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 364 Invalid, 3009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 2765 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 17:35:50,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89087 states. [2023-12-20 17:35:51,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89087 to 86956. [2023-12-20 17:35:51,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86956 states, 86955 states have (on average 1.0917141049968375) internal successors, (94930), 86955 states have internal predecessors, (94930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:51,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86956 states to 86956 states and 94930 transitions. [2023-12-20 17:35:51,584 INFO L78 Accepts]: Start accepts. Automaton has 86956 states and 94930 transitions. Word has length 858 [2023-12-20 17:35:51,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:35:51,585 INFO L495 AbstractCegarLoop]: Abstraction has 86956 states and 94930 transitions. [2023-12-20 17:35:51,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:51,585 INFO L276 IsEmpty]: Start isEmpty. Operand 86956 states and 94930 transitions. [2023-12-20 17:35:51,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 860 [2023-12-20 17:35:51,632 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:35:51,633 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:35:51,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 17:35:51,633 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:35:51,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:35:51,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1144360861, now seen corresponding path program 1 times [2023-12-20 17:35:51,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:35:51,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578743531] [2023-12-20 17:35:51,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:35:51,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:35:51,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:35:52,176 INFO L134 CoverageAnalysis]: Checked inductivity of 939 backedges. 565 proven. 0 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2023-12-20 17:35:52,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:35:52,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578743531] [2023-12-20 17:35:52,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578743531] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:35:52,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:35:52,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:35:52,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702281727] [2023-12-20 17:35:52,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:35:52,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:35:52,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:35:52,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:35:52,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:35:52,182 INFO L87 Difference]: Start difference. First operand 86956 states and 94930 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) [2023-12-20 17:35:54,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:35:54,183 INFO L93 Difference]: Finished difference Result 182421 states and 199073 transitions. [2023-12-20 17:35:54,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:35:54,183 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 859 [2023-12-20 17:35:54,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:35:54,315 INFO L225 Difference]: With dead ends: 182421 [2023-12-20 17:35:54,315 INFO L226 Difference]: Without dead ends: 95466 [2023-12-20 17:35:54,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:35:54,364 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 498 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 1372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:35:54,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 203 Invalid, 1372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 17:35:54,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95466 states. [2023-12-20 17:35:55,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95466 to 91206. [2023-12-20 17:35:55,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91206 states, 91205 states have (on average 1.084140123896716) internal successors, (98879), 91205 states have internal predecessors, (98879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:35:55,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91206 states to 91206 states and 98879 transitions. [2023-12-20 17:35:55,764 INFO L78 Accepts]: Start accepts. Automaton has 91206 states and 98879 transitions. Word has length 859 [2023-12-20 17:35:55,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:35:55,765 INFO L495 AbstractCegarLoop]: Abstraction has 91206 states and 98879 transitions. [2023-12-20 17:35:55,765 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) [2023-12-20 17:35:55,765 INFO L276 IsEmpty]: Start isEmpty. Operand 91206 states and 98879 transitions. [2023-12-20 17:35:55,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 872 [2023-12-20 17:35:55,805 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:35:55,806 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:35:55,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 17:35:55,806 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:35:55,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:35:55,807 INFO L85 PathProgramCache]: Analyzing trace with hash 996316799, now seen corresponding path program 1 times [2023-12-20 17:35:55,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:35:55,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379565095] [2023-12-20 17:35:55,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:35:55,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:35:55,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:35:57,044 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 655 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-12-20 17:35:57,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:35:57,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379565095] [2023-12-20 17:35:57,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379565095] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:35:57,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:35:57,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:35:57,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780949730] [2023-12-20 17:35:57,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:35:57,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:35:57,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:35:57,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:35:57,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:35:57,047 INFO L87 Difference]: Start difference. First operand 91206 states and 98879 transitions. Second operand has 4 states, 4 states have (on average 177.25) internal successors, (709), 4 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:36:00,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:36:00,206 INFO L93 Difference]: Finished difference Result 213087 states and 230371 transitions. [2023-12-20 17:36:00,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:36:00,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 177.25) internal successors, (709), 4 states have internal predecessors, (709), 0 states have call successors, (0), 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 871 [2023-12-20 17:36:00,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:36:00,362 INFO L225 Difference]: With dead ends: 213087 [2023-12-20 17:36:00,363 INFO L226 Difference]: Without dead ends: 118479 [2023-12-20 17:36:00,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:36:00,406 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 648 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 2493 mSolverCounterSat, 378 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 2871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 378 IncrementalHoareTripleChecker+Valid, 2493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 17:36:00,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [648 Valid, 192 Invalid, 2871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [378 Valid, 2493 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 17:36:00,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118479 states. [2023-12-20 17:36:01,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118479 to 81791. [2023-12-20 17:36:01,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81791 states, 81790 states have (on average 1.079594082406162) internal successors, (88300), 81790 states have internal predecessors, (88300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:36:01,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81791 states to 81791 states and 88300 transitions. [2023-12-20 17:36:01,736 INFO L78 Accepts]: Start accepts. Automaton has 81791 states and 88300 transitions. Word has length 871 [2023-12-20 17:36:01,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:36:01,737 INFO L495 AbstractCegarLoop]: Abstraction has 81791 states and 88300 transitions. [2023-12-20 17:36:01,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 177.25) internal successors, (709), 4 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:36:01,737 INFO L276 IsEmpty]: Start isEmpty. Operand 81791 states and 88300 transitions. [2023-12-20 17:36:01,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 890 [2023-12-20 17:36:01,776 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:36:01,777 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:36:01,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 17:36:01,777 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:36:01,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:36:01,777 INFO L85 PathProgramCache]: Analyzing trace with hash 160630001, now seen corresponding path program 1 times [2023-12-20 17:36:01,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:36:01,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076999932] [2023-12-20 17:36:01,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:36:01,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:36:02,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:36:02,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1231 backedges. 1075 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-20 17:36:02,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:36:02,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076999932] [2023-12-20 17:36:02,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076999932] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:36:02,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:36:02,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:36:02,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056755587] [2023-12-20 17:36:02,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:36:02,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:36:02,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:36:02,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:36:02,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:36:02,826 INFO L87 Difference]: Start difference. First operand 81791 states and 88300 transitions. Second operand has 4 states, 4 states have (on average 183.75) internal successors, (735), 4 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:36:05,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:36:05,587 INFO L93 Difference]: Finished difference Result 171246 states and 184867 transitions. [2023-12-20 17:36:05,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:36:05,588 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 183.75) internal successors, (735), 4 states have internal predecessors, (735), 0 states have call successors, (0), 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 889 [2023-12-20 17:36:05,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:36:05,692 INFO L225 Difference]: With dead ends: 171246 [2023-12-20 17:36:05,692 INFO L226 Difference]: Without dead ends: 89456 [2023-12-20 17:36:05,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:36:05,748 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 438 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 2237 mSolverCounterSat, 411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 2648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 411 IncrementalHoareTripleChecker+Valid, 2237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:36:05,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 150 Invalid, 2648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [411 Valid, 2237 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 17:36:05,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89456 states. [2023-12-20 17:36:06,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89456 to 80941. [2023-12-20 17:36:06,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80941 states, 80940 states have (on average 1.0752038547071905) internal successors, (87027), 80940 states have internal predecessors, (87027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:36:06,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80941 states to 80941 states and 87027 transitions. [2023-12-20 17:36:06,871 INFO L78 Accepts]: Start accepts. Automaton has 80941 states and 87027 transitions. Word has length 889 [2023-12-20 17:36:06,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:36:06,871 INFO L495 AbstractCegarLoop]: Abstraction has 80941 states and 87027 transitions. [2023-12-20 17:36:06,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 183.75) internal successors, (735), 4 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:36:06,872 INFO L276 IsEmpty]: Start isEmpty. Operand 80941 states and 87027 transitions. [2023-12-20 17:36:07,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 922 [2023-12-20 17:36:07,111 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:36:07,111 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:36:07,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 17:36:07,111 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:36:07,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:36:07,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1421148922, now seen corresponding path program 1 times [2023-12-20 17:36:07,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:36:07,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506955242] [2023-12-20 17:36:07,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:36:07,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:36:07,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:36:09,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 950 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-20 17:36:09,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:36:09,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506955242] [2023-12-20 17:36:09,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506955242] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:36:09,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:36:09,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 17:36:09,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867577941] [2023-12-20 17:36:09,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:36:09,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 17:36:09,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:36:09,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 17:36:09,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:36:09,173 INFO L87 Difference]: Start difference. First operand 80941 states and 87027 transitions. Second operand has 7 states, 7 states have (on average 120.0) internal successors, (840), 6 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:36:14,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:36:14,226 INFO L93 Difference]: Finished difference Result 187666 states and 201009 transitions. [2023-12-20 17:36:14,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-20 17:36:14,229 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 120.0) internal successors, (840), 6 states have internal predecessors, (840), 0 states have call successors, (0), 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 921 [2023-12-20 17:36:14,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:36:14,514 INFO L225 Difference]: With dead ends: 187666 [2023-12-20 17:36:14,514 INFO L226 Difference]: Without dead ends: 106726 [2023-12-20 17:36:14,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-20 17:36:14,558 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 2152 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 6666 mSolverCounterSat, 862 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2152 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 7528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 862 IncrementalHoareTripleChecker+Valid, 6666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:36:14,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2152 Valid, 221 Invalid, 7528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [862 Valid, 6666 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-12-20 17:36:14,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106726 states. [2023-12-20 17:36:15,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106726 to 81366. [2023-12-20 17:36:15,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81366 states, 81365 states have (on average 1.0746758434216186) internal successors, (87441), 81365 states have internal predecessors, (87441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:36:15,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81366 states to 81366 states and 87441 transitions. [2023-12-20 17:36:15,786 INFO L78 Accepts]: Start accepts. Automaton has 81366 states and 87441 transitions. Word has length 921 [2023-12-20 17:36:15,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:36:15,786 INFO L495 AbstractCegarLoop]: Abstraction has 81366 states and 87441 transitions. [2023-12-20 17:36:15,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 120.0) internal successors, (840), 6 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:36:15,787 INFO L276 IsEmpty]: Start isEmpty. Operand 81366 states and 87441 transitions. [2023-12-20 17:36:15,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 948 [2023-12-20 17:36:15,831 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:36:15,831 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:36:15,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 17:36:15,832 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:36:15,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:36:15,832 INFO L85 PathProgramCache]: Analyzing trace with hash -2044217458, now seen corresponding path program 1 times [2023-12-20 17:36:15,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:36:15,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411546838] [2023-12-20 17:36:15,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:36:15,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:36:15,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:36:17,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1023 backedges. 690 proven. 0 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2023-12-20 17:36:17,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:36:17,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411546838] [2023-12-20 17:36:17,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411546838] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:36:17,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:36:17,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:36:17,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085545871] [2023-12-20 17:36:17,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:36:17,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:36:17,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:36:17,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:36:17,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:36:17,367 INFO L87 Difference]: Start difference. First operand 81366 states and 87441 transitions. Second operand has 3 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:36:19,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:36:19,013 INFO L93 Difference]: Finished difference Result 162730 states and 174880 transitions. [2023-12-20 17:36:19,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:36:19,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 0 states have call successors, (0), 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 947 [2023-12-20 17:36:19,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:36:19,098 INFO L225 Difference]: With dead ends: 162730 [2023-12-20 17:36:19,098 INFO L226 Difference]: Without dead ends: 81364 [2023-12-20 17:36:19,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:36:19,144 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 234 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:36:19,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 515 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1067 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 17:36:19,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81364 states. [2023-12-20 17:36:20,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81364 to 81364. [2023-12-20 17:36:20,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81364 states, 81363 states have (on average 1.0746162260486953) internal successors, (87434), 81363 states have internal predecessors, (87434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:36:20,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81364 states to 81364 states and 87434 transitions. [2023-12-20 17:36:20,234 INFO L78 Accepts]: Start accepts. Automaton has 81364 states and 87434 transitions. Word has length 947 [2023-12-20 17:36:20,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:36:20,234 INFO L495 AbstractCegarLoop]: Abstraction has 81364 states and 87434 transitions. [2023-12-20 17:36:20,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:36:20,235 INFO L276 IsEmpty]: Start isEmpty. Operand 81364 states and 87434 transitions. [2023-12-20 17:36:20,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 958 [2023-12-20 17:36:20,279 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:36:20,279 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:36:20,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 17:36:20,279 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:36:20,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:36:20,280 INFO L85 PathProgramCache]: Analyzing trace with hash -540084851, now seen corresponding path program 1 times [2023-12-20 17:36:20,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:36:20,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676563356] [2023-12-20 17:36:20,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:36:20,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:36:20,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:36:22,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1337 backedges. 985 proven. 289 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-20 17:36:22,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:36:22,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676563356] [2023-12-20 17:36:22,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676563356] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:36:22,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604069711] [2023-12-20 17:36:22,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:36:22,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:36:22,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:36:22,367 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:36:22,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 17:36:22,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:36:22,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 1138 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-20 17:36:22,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:36:24,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1337 backedges. 1051 proven. 223 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-20 17:36:24,226 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 17:36:25,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1337 backedges. 1067 proven. 207 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-20 17:36:25,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604069711] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 17:36:25,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 17:36:25,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2023-12-20 17:36:25,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167438719] [2023-12-20 17:36:25,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 17:36:25,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-20 17:36:25,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:36:25,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-20 17:36:25,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-12-20 17:36:25,764 INFO L87 Difference]: Start difference. First operand 81364 states and 87434 transitions. Second operand has 16 states, 16 states have (on average 97.4375) internal successors, (1559), 16 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:36:44,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:36:44,574 INFO L93 Difference]: Finished difference Result 193629 states and 207450 transitions. [2023-12-20 17:36:44,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-12-20 17:36:44,574 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 97.4375) internal successors, (1559), 16 states have internal predecessors, (1559), 0 states have call successors, (0), 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 957 [2023-12-20 17:36:44,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:36:44,707 INFO L225 Difference]: With dead ends: 193629 [2023-12-20 17:36:44,707 INFO L226 Difference]: Without dead ends: 111839 [2023-12-20 17:36:44,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2003 GetRequests, 1933 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1780 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1214, Invalid=3756, Unknown=0, NotChecked=0, Total=4970 [2023-12-20 17:36:44,764 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 16737 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 23551 mSolverCounterSat, 3546 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16737 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 27097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3546 IncrementalHoareTripleChecker+Valid, 23551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:36:44,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16737 Valid, 372 Invalid, 27097 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3546 Valid, 23551 Invalid, 0 Unknown, 0 Unchecked, 16.5s Time] [2023-12-20 17:36:44,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111839 states. [2023-12-20 17:36:45,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111839 to 98359. [2023-12-20 17:36:45,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98359 states, 98358 states have (on average 1.0546473088106711) internal successors, (103733), 98358 states have internal predecessors, (103733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:36:45,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98359 states to 98359 states and 103733 transitions. [2023-12-20 17:36:45,997 INFO L78 Accepts]: Start accepts. Automaton has 98359 states and 103733 transitions. Word has length 957 [2023-12-20 17:36:45,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:36:45,997 INFO L495 AbstractCegarLoop]: Abstraction has 98359 states and 103733 transitions. [2023-12-20 17:36:45,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 97.4375) internal successors, (1559), 16 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:36:45,997 INFO L276 IsEmpty]: Start isEmpty. Operand 98359 states and 103733 transitions. [2023-12-20 17:36:46,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1039 [2023-12-20 17:36:46,058 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:36:46,058 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:36:46,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 17:36:46,259 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,SelfDestructingSolverStorable23 [2023-12-20 17:36:46,259 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:36:46,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:36:46,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1846323653, now seen corresponding path program 1 times [2023-12-20 17:36:46,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:36:46,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190864774] [2023-12-20 17:36:46,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:36:46,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:36:46,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:36:47,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1613 backedges. 929 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-20 17:36:47,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:36:47,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190864774] [2023-12-20 17:36:47,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190864774] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:36:47,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:36:47,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:36:47,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185393098] [2023-12-20 17:36:47,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:36:47,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:36:47,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:36:47,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:36:47,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:36:47,560 INFO L87 Difference]: Start difference. First operand 98359 states and 103733 transitions. Second operand has 4 states, 4 states have (on average 166.5) internal successors, (666), 4 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:36:50,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:36:50,872 INFO L93 Difference]: Finished difference Result 220143 states and 231734 transitions. [2023-12-20 17:36:50,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:36:50,873 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 166.5) internal successors, (666), 4 states have internal predecessors, (666), 0 states have call successors, (0), 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 1038 [2023-12-20 17:36:50,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:36:51,008 INFO L225 Difference]: With dead ends: 220143 [2023-12-20 17:36:51,008 INFO L226 Difference]: Without dead ends: 120935 [2023-12-20 17:36:51,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:36:51,066 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 654 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 2324 mSolverCounterSat, 427 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 2751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 427 IncrementalHoareTripleChecker+Valid, 2324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-20 17:36:51,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 154 Invalid, 2751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [427 Valid, 2324 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-20 17:36:51,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120935 states. [2023-12-20 17:36:52,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120935 to 108138. [2023-12-20 17:36:52,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108138 states, 108137 states have (on average 1.0520635860066396) internal successors, (113767), 108137 states have internal predecessors, (113767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:36:53,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108138 states to 108138 states and 113767 transitions. [2023-12-20 17:36:53,121 INFO L78 Accepts]: Start accepts. Automaton has 108138 states and 113767 transitions. Word has length 1038 [2023-12-20 17:36:53,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:36:53,122 INFO L495 AbstractCegarLoop]: Abstraction has 108138 states and 113767 transitions. [2023-12-20 17:36:53,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 166.5) internal successors, (666), 4 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:36:53,122 INFO L276 IsEmpty]: Start isEmpty. Operand 108138 states and 113767 transitions. [2023-12-20 17:36:53,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1251 [2023-12-20 17:36:53,190 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:36:53,190 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:36:53,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 17:36:53,191 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:36:53,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:36:53,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1843410438, now seen corresponding path program 1 times [2023-12-20 17:36:53,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:36:53,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928307948] [2023-12-20 17:36:53,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:36:53,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:36:53,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:36:54,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2095 backedges. 378 proven. 0 refuted. 0 times theorem prover too weak. 1717 trivial. 0 not checked. [2023-12-20 17:36:54,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:36:54,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928307948] [2023-12-20 17:36:54,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928307948] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:36:54,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:36:54,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:36:54,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673226852] [2023-12-20 17:36:54,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:36:54,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:36:54,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:36:54,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:36:54,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:36:54,817 INFO L87 Difference]: Start difference. First operand 108138 states and 113767 transitions. Second operand has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:36:56,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:36:56,875 INFO L93 Difference]: Finished difference Result 225219 states and 236783 transitions. [2023-12-20 17:36:56,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:36:56,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 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 1250 [2023-12-20 17:36:56,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:36:57,002 INFO L225 Difference]: With dead ends: 225219 [2023-12-20 17:36:57,002 INFO L226 Difference]: Without dead ends: 116657 [2023-12-20 17:36:57,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:36:57,027 INFO L413 NwaCegarLoop]: 695 mSDtfsCounter, 376 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1209 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 1286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:36:57,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 737 Invalid, 1286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1209 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 17:36:57,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116657 states. [2023-12-20 17:36:58,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116657 to 108136. [2023-12-20 17:36:58,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108136 states, 108135 states have (on average 1.0513987145697508) internal successors, (113693), 108135 states have internal predecessors, (113693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:36:58,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108136 states to 108136 states and 113693 transitions. [2023-12-20 17:36:58,437 INFO L78 Accepts]: Start accepts. Automaton has 108136 states and 113693 transitions. Word has length 1250 [2023-12-20 17:36:58,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:36:58,438 INFO L495 AbstractCegarLoop]: Abstraction has 108136 states and 113693 transitions. [2023-12-20 17:36:58,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:36:58,438 INFO L276 IsEmpty]: Start isEmpty. Operand 108136 states and 113693 transitions. [2023-12-20 17:36:58,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1432 [2023-12-20 17:36:58,766 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:36:58,785 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:36:58,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-20 17:36:58,785 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:36:58,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:36:58,786 INFO L85 PathProgramCache]: Analyzing trace with hash -283646766, now seen corresponding path program 1 times [2023-12-20 17:36:58,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:36:58,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755237395] [2023-12-20 17:36:58,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:36:58,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:36:58,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:36:59,741 INFO L134 CoverageAnalysis]: Checked inductivity of 3663 backedges. 1408 proven. 0 refuted. 0 times theorem prover too weak. 2255 trivial. 0 not checked. [2023-12-20 17:36:59,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:36:59,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755237395] [2023-12-20 17:36:59,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755237395] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:36:59,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:36:59,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:36:59,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908902332] [2023-12-20 17:36:59,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:36:59,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:36:59,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:36:59,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:36:59,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:36:59,743 INFO L87 Difference]: Start difference. First operand 108136 states and 113693 transitions. Second operand has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:37:02,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:37:02,370 INFO L93 Difference]: Finished difference Result 232459 states and 243969 transitions. [2023-12-20 17:37:02,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:37:02,371 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 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 1431 [2023-12-20 17:37:02,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:37:02,520 INFO L225 Difference]: With dead ends: 232459 [2023-12-20 17:37:02,520 INFO L226 Difference]: Without dead ends: 123899 [2023-12-20 17:37:02,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:37:02,574 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 725 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 2214 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 2453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 2214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:37:02,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [725 Valid, 183 Invalid, 2453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 2214 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 17:37:02,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123899 states. [2023-12-20 17:37:03,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123899 to 114505. [2023-12-20 17:37:04,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114505 states, 114504 states have (on average 1.0489764549710054) internal successors, (120112), 114504 states have internal predecessors, (120112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:37:04,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114505 states to 114505 states and 120112 transitions. [2023-12-20 17:37:04,368 INFO L78 Accepts]: Start accepts. Automaton has 114505 states and 120112 transitions. Word has length 1431 [2023-12-20 17:37:04,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:37:04,369 INFO L495 AbstractCegarLoop]: Abstraction has 114505 states and 120112 transitions. [2023-12-20 17:37:04,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:37:04,369 INFO L276 IsEmpty]: Start isEmpty. Operand 114505 states and 120112 transitions. [2023-12-20 17:37:04,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1673 [2023-12-20 17:37:04,503 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:37:04,504 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:37:04,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-20 17:37:04,504 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:37:04,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:37:04,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1513572831, now seen corresponding path program 1 times [2023-12-20 17:37:04,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:37:04,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988566451] [2023-12-20 17:37:04,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:37:04,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:37:04,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:37:06,499 INFO L134 CoverageAnalysis]: Checked inductivity of 4707 backedges. 3455 proven. 0 refuted. 0 times theorem prover too weak. 1252 trivial. 0 not checked. [2023-12-20 17:37:06,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:37:06,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988566451] [2023-12-20 17:37:06,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988566451] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:37:06,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:37:06,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 17:37:06,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750996698] [2023-12-20 17:37:06,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:37:06,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 17:37:06,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:37:06,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 17:37:06,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-20 17:37:06,502 INFO L87 Difference]: Start difference. First operand 114505 states and 120112 transitions. Second operand has 5 states, 5 states have (on average 183.4) internal successors, (917), 5 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:37:09,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:37:09,664 INFO L93 Difference]: Finished difference Result 245618 states and 257707 transitions. [2023-12-20 17:37:09,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 17:37:09,665 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 183.4) internal successors, (917), 5 states have internal predecessors, (917), 0 states have call successors, (0), 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 1672 [2023-12-20 17:37:09,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:37:09,824 INFO L225 Difference]: With dead ends: 245618 [2023-12-20 17:37:09,824 INFO L226 Difference]: Without dead ends: 131114 [2023-12-20 17:37:09,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-20 17:37:09,874 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 1255 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 2658 mSolverCounterSat, 337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1255 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 2995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 2658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:37:09,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1255 Valid, 157 Invalid, 2995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 2658 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 17:37:09,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131114 states. [2023-12-20 17:37:11,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131114 to 128985. [2023-12-20 17:37:11,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128985 states, 128984 states have (on average 1.0497968740308876) internal successors, (135407), 128984 states have internal predecessors, (135407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:37:11,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128985 states to 128985 states and 135407 transitions. [2023-12-20 17:37:11,931 INFO L78 Accepts]: Start accepts. Automaton has 128985 states and 135407 transitions. Word has length 1672 [2023-12-20 17:37:11,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:37:11,931 INFO L495 AbstractCegarLoop]: Abstraction has 128985 states and 135407 transitions. [2023-12-20 17:37:11,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 183.4) internal successors, (917), 5 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:37:11,932 INFO L276 IsEmpty]: Start isEmpty. Operand 128985 states and 135407 transitions. [2023-12-20 17:37:12,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1706 [2023-12-20 17:37:12,074 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:37:12,074 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:37:12,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-20 17:37:12,074 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:37:12,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:37:12,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1605549167, now seen corresponding path program 1 times [2023-12-20 17:37:12,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:37:12,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405717347] [2023-12-20 17:37:12,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:37:12,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:37:12,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:37:13,527 INFO L134 CoverageAnalysis]: Checked inductivity of 4806 backedges. 3200 proven. 0 refuted. 0 times theorem prover too weak. 1606 trivial. 0 not checked. [2023-12-20 17:37:13,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:37:13,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405717347] [2023-12-20 17:37:13,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405717347] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:37:13,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:37:13,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:37:13,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715377410] [2023-12-20 17:37:13,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:37:13,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:37:13,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:37:13,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:37:13,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:37:13,530 INFO L87 Difference]: Start difference. First operand 128985 states and 135407 transitions. Second operand has 3 states, 3 states have (on average 275.3333333333333) internal successors, (826), 3 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:37:15,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:37:15,320 INFO L93 Difference]: Finished difference Result 260944 states and 273934 transitions. [2023-12-20 17:37:15,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:37:15,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 275.3333333333333) internal successors, (826), 3 states have internal predecessors, (826), 0 states have call successors, (0), 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 1705 [2023-12-20 17:37:15,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:37:15,476 INFO L225 Difference]: With dead ends: 260944 [2023-12-20 17:37:15,476 INFO L226 Difference]: Without dead ends: 131960 [2023-12-20 17:37:15,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:37:15,530 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 129 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 1197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:37:15,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 243 Invalid, 1197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 17:37:15,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131960 states. [2023-12-20 17:37:17,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131960 to 129398. [2023-12-20 17:37:17,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129398 states, 129397 states have (on average 1.0471494702350133) internal successors, (135498), 129397 states have internal predecessors, (135498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:37:17,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129398 states to 129398 states and 135498 transitions. [2023-12-20 17:37:17,505 INFO L78 Accepts]: Start accepts. Automaton has 129398 states and 135498 transitions. Word has length 1705 [2023-12-20 17:37:17,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:37:17,505 INFO L495 AbstractCegarLoop]: Abstraction has 129398 states and 135498 transitions. [2023-12-20 17:37:17,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 275.3333333333333) internal successors, (826), 3 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:37:17,506 INFO L276 IsEmpty]: Start isEmpty. Operand 129398 states and 135498 transitions. [2023-12-20 17:37:17,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1731 [2023-12-20 17:37:17,645 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:37:17,645 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2023-12-20 17:37:17,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-20 17:37:17,645 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:37:17,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:37:17,646 INFO L85 PathProgramCache]: Analyzing trace with hash -279430860, now seen corresponding path program 1 times [2023-12-20 17:37:17,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:37:17,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068704511] [2023-12-20 17:37:17,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:37:17,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:37:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:37:19,216 INFO L134 CoverageAnalysis]: Checked inductivity of 4887 backedges. 1890 proven. 0 refuted. 0 times theorem prover too weak. 2997 trivial. 0 not checked. [2023-12-20 17:37:19,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:37:19,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068704511] [2023-12-20 17:37:19,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068704511] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:37:19,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:37:19,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:37:19,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133983012] [2023-12-20 17:37:19,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:37:19,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:37:19,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:37:19,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:37:19,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:37:19,219 INFO L87 Difference]: Start difference. First operand 129398 states and 135498 transitions. Second operand has 4 states, 4 states have (on average 186.5) internal successors, (746), 4 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:37:21,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:37:21,958 INFO L93 Difference]: Finished difference Result 298810 states and 312561 transitions. [2023-12-20 17:37:21,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:37:21,959 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 186.5) internal successors, (746), 4 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1730 [2023-12-20 17:37:21,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:37:22,418 INFO L225 Difference]: With dead ends: 298810 [2023-12-20 17:37:22,418 INFO L226 Difference]: Without dead ends: 168988 [2023-12-20 17:37:22,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:37:22,502 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 575 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 2214 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 2495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 2214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:37:22,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 132 Invalid, 2495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 2214 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 17:37:22,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168988 states.