/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 19:12:06,056 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 19:12:06,120 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 19:12:06,124 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 19:12:06,125 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 19:12:06,149 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 19:12:06,150 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 19:12:06,150 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 19:12:06,151 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 19:12:06,153 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 19:12:06,154 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 19:12:06,154 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 19:12:06,154 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 19:12:06,155 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 19:12:06,155 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 19:12:06,155 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 19:12:06,155 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 19:12:06,156 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 19:12:06,156 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 19:12:06,157 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 19:12:06,157 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 19:12:06,157 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 19:12:06,157 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 19:12:06,157 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 19:12:06,158 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 19:12:06,158 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 19:12:06,158 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 19:12:06,158 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 19:12:06,158 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 19:12:06,159 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 19:12:06,159 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 19:12:06,159 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 19:12:06,159 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:12:06,160 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 19:12:06,160 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 19:12:06,160 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 19:12:06,160 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 19:12:06,160 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 19:12:06,161 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 19:12:06,161 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 19:12:06,161 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 19:12:06,161 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 19:12:06,161 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 19:12:06,161 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 19:12:06,375 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 19:12:06,392 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 19:12:06,393 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 19:12:06,394 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 19:12:06,394 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 19:12:06,395 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label58.c [2023-12-15 19:12:07,391 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 19:12:07,662 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 19:12:07,662 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label58.c [2023-12-15 19:12:07,695 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f10c1ddf4/f431a516c43a4e2fbf9d42f9b0cb81eb/FLAGadc54b0c8 [2023-12-15 19:12:07,708 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f10c1ddf4/f431a516c43a4e2fbf9d42f9b0cb81eb [2023-12-15 19:12:07,710 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 19:12:07,711 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 19:12:07,713 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 19:12:07,713 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 19:12:07,716 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 19:12:07,717 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:12:07" (1/1) ... [2023-12-15 19:12:07,717 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7eccd873 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:12:07, skipping insertion in model container [2023-12-15 19:12:07,718 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:12:07" (1/1) ... [2023-12-15 19:12:07,786 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 19:12:07,980 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_label58.c[6741,6754] [2023-12-15 19:12:08,393 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:12:08,402 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 19:12:08,423 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_label58.c[6741,6754] [2023-12-15 19:12:08,593 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:12:08,605 INFO L206 MainTranslator]: Completed translation [2023-12-15 19:12:08,606 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:12:08 WrapperNode [2023-12-15 19:12:08,606 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 19:12:08,607 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 19:12:08,607 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 19:12:08,607 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 19:12:08,611 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:12:08" (1/1) ... [2023-12-15 19:12:08,648 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:12:08" (1/1) ... [2023-12-15 19:12:08,870 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2023-12-15 19:12:08,870 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 19:12:08,871 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 19:12:08,871 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 19:12:08,871 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 19:12:08,878 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:12:08" (1/1) ... [2023-12-15 19:12:08,878 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:12:08" (1/1) ... [2023-12-15 19:12:08,962 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:12:08" (1/1) ... [2023-12-15 19:12:09,038 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]. [2023-12-15 19:12:09,038 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:12:08" (1/1) ... [2023-12-15 19:12:09,039 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:12:08" (1/1) ... [2023-12-15 19:12:09,153 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:12:08" (1/1) ... [2023-12-15 19:12:09,163 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:12:08" (1/1) ... [2023-12-15 19:12:09,179 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:12:08" (1/1) ... [2023-12-15 19:12:09,199 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:12:08" (1/1) ... [2023-12-15 19:12:09,228 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 19:12:09,229 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 19:12:09,230 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 19:12:09,230 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 19:12:09,230 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:12:08" (1/1) ... [2023-12-15 19:12:09,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:12:09,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:12:09,257 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) [2023-12-15 19:12:09,280 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 [2023-12-15 19:12:09,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 19:12:09,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 19:12:09,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 19:12:09,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 19:12:09,351 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 19:12:09,353 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 19:12:11,749 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 19:12:11,810 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 19:12:11,810 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 19:12:11,811 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:12:11 BoogieIcfgContainer [2023-12-15 19:12:11,811 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 19:12:11,813 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 19:12:11,813 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 19:12:11,815 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 19:12:11,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 07:12:07" (1/3) ... [2023-12-15 19:12:11,816 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b1aca3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:12:11, skipping insertion in model container [2023-12-15 19:12:11,816 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:12:08" (2/3) ... [2023-12-15 19:12:11,816 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b1aca3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:12:11, skipping insertion in model container [2023-12-15 19:12:11,816 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:12:11" (3/3) ... [2023-12-15 19:12:11,817 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label58.c [2023-12-15 19:12:11,828 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 19:12:11,828 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 19:12:11,873 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 19:12:11,877 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;@ca9a5f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 19:12:11,877 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 19:12:11,881 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) [2023-12-15 19:12:11,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-15 19:12:11,886 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:12:11,886 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] [2023-12-15 19:12:11,887 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:12:11,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:12:11,890 INFO L85 PathProgramCache]: Analyzing trace with hash -489742523, now seen corresponding path program 1 times [2023-12-15 19:12:11,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:12:11,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220805891] [2023-12-15 19:12:11,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:12:11,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:12:11,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:12:11,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:12:11,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:12:11,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220805891] [2023-12-15 19:12:11,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220805891] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:12:11,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:12:11,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:12:11,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973216904] [2023-12-15 19:12:11,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:12:12,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 19:12:12,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:12:12,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 19:12:12,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:12:12,019 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 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:12,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:12:12,064 INFO L93 Difference]: Finished difference Result 1055 states and 1999 transitions. [2023-12-15 19:12:12,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 19:12:12,067 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2023-12-15 19:12:12,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:12:12,075 INFO L225 Difference]: With dead ends: 1055 [2023-12-15 19:12:12,075 INFO L226 Difference]: Without dead ends: 526 [2023-12-15 19:12:12,078 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 [2023-12-15 19:12:12,080 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 [2023-12-15 19:12:12,081 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] [2023-12-15 19:12:12,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2023-12-15 19:12:12,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2023-12-15 19:12:12,131 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) [2023-12-15 19:12:12,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 935 transitions. [2023-12-15 19:12:12,133 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 935 transitions. Word has length 44 [2023-12-15 19:12:12,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:12:12,133 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 935 transitions. [2023-12-15 19:12:12,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:12,134 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 935 transitions. [2023-12-15 19:12:12,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-15 19:12:12,134 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:12:12,134 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] [2023-12-15 19:12:12,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 19:12:12,135 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:12:12,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:12:12,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1473960833, now seen corresponding path program 1 times [2023-12-15 19:12:12,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:12:12,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091861047] [2023-12-15 19:12:12,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:12:12,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:12:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:12:12,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:12:12,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:12:12,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091861047] [2023-12-15 19:12:12,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091861047] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:12:12,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:12:12,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:12:12,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458785119] [2023-12-15 19:12:12,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:12:12,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:12:12,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:12:12,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:12:12,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:12:12,304 INFO L87 Difference]: Start difference. First operand 526 states and 935 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:14,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:12:14,582 INFO L93 Difference]: Finished difference Result 1522 states and 2728 transitions. [2023-12-15 19:12:14,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:12:14,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2023-12-15 19:12:14,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:12:14,592 INFO L225 Difference]: With dead ends: 1522 [2023-12-15 19:12:14,593 INFO L226 Difference]: Without dead ends: 997 [2023-12-15 19:12:14,595 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 [2023-12-15 19:12:14,596 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 466 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 1843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:12:14,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 239 Invalid, 1843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 1492 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-15 19:12:14,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2023-12-15 19:12:14,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 981. [2023-12-15 19:12:14,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 980 states have (on average 1.7081632653061225) internal successors, (1674), 980 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:14,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1674 transitions. [2023-12-15 19:12:14,622 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1674 transitions. Word has length 44 [2023-12-15 19:12:14,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:12:14,622 INFO L495 AbstractCegarLoop]: Abstraction has 981 states and 1674 transitions. [2023-12-15 19:12:14,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:14,622 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1674 transitions. [2023-12-15 19:12:14,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-15 19:12:14,625 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:12:14,625 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:12:14,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 19:12:14,626 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:12:14,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:12:14,626 INFO L85 PathProgramCache]: Analyzing trace with hash 2128004469, now seen corresponding path program 1 times [2023-12-15 19:12:14,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:12:14,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305105858] [2023-12-15 19:12:14,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:12:14,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:12:14,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:12:14,760 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:12:14,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:12:14,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305105858] [2023-12-15 19:12:14,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305105858] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:12:14,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:12:14,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:12:14,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145224613] [2023-12-15 19:12:14,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:12:14,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:12:14,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:12:14,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:12:14,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:12:14,763 INFO L87 Difference]: Start difference. First operand 981 states and 1674 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:16,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:12:16,636 INFO L93 Difference]: Finished difference Result 2842 states and 4881 transitions. [2023-12-15 19:12:16,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:12:16,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2023-12-15 19:12:16,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:12:16,642 INFO L225 Difference]: With dead ends: 2842 [2023-12-15 19:12:16,642 INFO L226 Difference]: Without dead ends: 1862 [2023-12-15 19:12:16,643 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 [2023-12-15 19:12:16,644 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 409 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 1666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-15 19:12:16,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 493 Invalid, 1666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1342 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-15 19:12:16,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1862 states. [2023-12-15 19:12:16,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1862 to 1856. [2023-12-15 19:12:16,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1856 states, 1855 states have (on average 1.4555256064690028) internal successors, (2700), 1855 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:16,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 2700 transitions. [2023-12-15 19:12:16,669 INFO L78 Accepts]: Start accepts. Automaton has 1856 states and 2700 transitions. Word has length 109 [2023-12-15 19:12:16,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:12:16,669 INFO L495 AbstractCegarLoop]: Abstraction has 1856 states and 2700 transitions. [2023-12-15 19:12:16,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:16,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1856 states and 2700 transitions. [2023-12-15 19:12:16,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-15 19:12:16,671 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:12:16,672 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:12:16,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 19:12:16,672 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:12:16,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:12:16,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1414150428, now seen corresponding path program 1 times [2023-12-15 19:12:16,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:12:16,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537497354] [2023-12-15 19:12:16,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:12:16,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:12:16,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:12:16,775 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:12:16,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:12:16,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537497354] [2023-12-15 19:12:16,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537497354] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:12:16,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:12:16,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:12:16,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754744200] [2023-12-15 19:12:16,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:12:16,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:12:16,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:12:16,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:12:16,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:12:16,789 INFO L87 Difference]: Start difference. First operand 1856 states and 2700 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:18,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:12:18,491 INFO L93 Difference]: Finished difference Result 5424 states and 7894 transitions. [2023-12-15 19:12:18,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:12:18,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2023-12-15 19:12:18,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:12:18,503 INFO L225 Difference]: With dead ends: 5424 [2023-12-15 19:12:18,503 INFO L226 Difference]: Without dead ends: 3569 [2023-12-15 19:12:18,506 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 [2023-12-15 19:12:18,507 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 387 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 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, 1.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:12:18,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 589 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-15 19:12:18,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3569 states. [2023-12-15 19:12:18,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3569 to 2713. [2023-12-15 19:12:18,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2713 states, 2712 states have (on average 1.3160029498525074) internal successors, (3569), 2712 states have internal predecessors, (3569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:18,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2713 states to 2713 states and 3569 transitions. [2023-12-15 19:12:18,543 INFO L78 Accepts]: Start accepts. Automaton has 2713 states and 3569 transitions. Word has length 115 [2023-12-15 19:12:18,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:12:18,544 INFO L495 AbstractCegarLoop]: Abstraction has 2713 states and 3569 transitions. [2023-12-15 19:12:18,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:18,544 INFO L276 IsEmpty]: Start isEmpty. Operand 2713 states and 3569 transitions. [2023-12-15 19:12:18,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-15 19:12:18,546 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:12:18,546 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:12:18,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 19:12:18,547 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:12:18,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:12:18,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1877688364, now seen corresponding path program 1 times [2023-12-15 19:12:18,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:12:18,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669861130] [2023-12-15 19:12:18,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:12:18,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:12:18,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:12:18,887 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:12:18,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:12:18,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669861130] [2023-12-15 19:12:18,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669861130] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:12:18,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:12:18,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 19:12:18,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261233147] [2023-12-15 19:12:18,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:12:18,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 19:12:18,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:12:18,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 19:12:18,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:12:18,889 INFO L87 Difference]: Start difference. First operand 2713 states and 3569 transitions. Second operand has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:21,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:12:21,079 INFO L93 Difference]: Finished difference Result 7148 states and 9642 transitions. [2023-12-15 19:12:21,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:12:21,084 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 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 192 [2023-12-15 19:12:21,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:12:21,095 INFO L225 Difference]: With dead ends: 7148 [2023-12-15 19:12:21,096 INFO L226 Difference]: Without dead ends: 4436 [2023-12-15 19:12:21,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:12:21,099 INFO L413 NwaCegarLoop]: 754 mSDtfsCounter, 599 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 2458 mSolverCounterSat, 644 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 3102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 644 IncrementalHoareTripleChecker+Valid, 2458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-15 19:12:21,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [599 Valid, 899 Invalid, 3102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [644 Valid, 2458 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-15 19:12:21,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4436 states. [2023-12-15 19:12:21,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4436 to 4423. [2023-12-15 19:12:21,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4423 states, 4422 states have (on average 1.2912709181365898) internal successors, (5710), 4422 states have internal predecessors, (5710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:21,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4423 states to 4423 states and 5710 transitions. [2023-12-15 19:12:21,169 INFO L78 Accepts]: Start accepts. Automaton has 4423 states and 5710 transitions. Word has length 192 [2023-12-15 19:12:21,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:12:21,169 INFO L495 AbstractCegarLoop]: Abstraction has 4423 states and 5710 transitions. [2023-12-15 19:12:21,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:21,170 INFO L276 IsEmpty]: Start isEmpty. Operand 4423 states and 5710 transitions. [2023-12-15 19:12:21,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-15 19:12:21,171 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:12:21,172 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, 2, 2, 2, 2, 2, 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] [2023-12-15 19:12:21,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 19:12:21,172 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:12:21,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:12:21,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1837089277, now seen corresponding path program 1 times [2023-12-15 19:12:21,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:12:21,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676861589] [2023-12-15 19:12:21,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:12:21,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:12:21,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:12:21,353 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-15 19:12:21,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:12:21,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676861589] [2023-12-15 19:12:21,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676861589] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:12:21,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:12:21,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:12:21,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406992592] [2023-12-15 19:12:21,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:12:21,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:12:21,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:12:21,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:12:21,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:12:21,357 INFO L87 Difference]: Start difference. First operand 4423 states and 5710 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:23,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:12:23,320 INFO L93 Difference]: Finished difference Result 10592 states and 13803 transitions. [2023-12-15 19:12:23,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:12:23,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 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 198 [2023-12-15 19:12:23,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:12:23,334 INFO L225 Difference]: With dead ends: 10592 [2023-12-15 19:12:23,335 INFO L226 Difference]: Without dead ends: 6170 [2023-12-15 19:12:23,340 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 [2023-12-15 19:12:23,340 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 507 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1460 mSolverCounterSat, 483 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 1943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 483 IncrementalHoareTripleChecker+Valid, 1460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-15 19:12:23,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 238 Invalid, 1943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [483 Valid, 1460 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-15 19:12:23,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6170 states. [2023-12-15 19:12:23,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6170 to 6152. [2023-12-15 19:12:23,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6152 states, 6151 states have (on average 1.3040156072183384) internal successors, (8021), 6151 states have internal predecessors, (8021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:23,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6152 states to 6152 states and 8021 transitions. [2023-12-15 19:12:23,453 INFO L78 Accepts]: Start accepts. Automaton has 6152 states and 8021 transitions. Word has length 198 [2023-12-15 19:12:23,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:12:23,453 INFO L495 AbstractCegarLoop]: Abstraction has 6152 states and 8021 transitions. [2023-12-15 19:12:23,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:23,454 INFO L276 IsEmpty]: Start isEmpty. Operand 6152 states and 8021 transitions. [2023-12-15 19:12:23,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2023-12-15 19:12:23,456 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:12:23,456 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-15 19:12:23,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 19:12:23,457 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:12:23,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:12:23,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1970944771, now seen corresponding path program 1 times [2023-12-15 19:12:23,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:12:23,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334673699] [2023-12-15 19:12:23,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:12:23,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:12:23,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:12:23,787 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 85 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:12:23,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:12:23,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334673699] [2023-12-15 19:12:23,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334673699] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:12:23,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943265357] [2023-12-15 19:12:23,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:12:23,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:12:23,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:12:23,790 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) [2023-12-15 19:12:23,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 19:12:23,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:12:23,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 19:12:23,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:12:24,179 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 85 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:12:24,179 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:12:24,449 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:12:24,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943265357] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 19:12:24,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:12:24,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 7 [2023-12-15 19:12:24,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695514070] [2023-12-15 19:12:24,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:12:24,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:12:24,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:12:24,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:12:24,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-15 19:12:24,451 INFO L87 Difference]: Start difference. First operand 6152 states and 8021 transitions. Second operand has 4 states, 4 states have (on average 66.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:27,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:12:27,228 INFO L93 Difference]: Finished difference Result 19996 states and 26779 transitions. [2023-12-15 19:12:27,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:12:27,228 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 66.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 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 264 [2023-12-15 19:12:27,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:12:27,260 INFO L225 Difference]: With dead ends: 19996 [2023-12-15 19:12:27,261 INFO L226 Difference]: Without dead ends: 12536 [2023-12-15 19:12:27,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 523 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-15 19:12:27,270 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 847 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 2320 mSolverCounterSat, 823 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 3143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 823 IncrementalHoareTripleChecker+Valid, 2320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:12:27,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 165 Invalid, 3143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [823 Valid, 2320 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-15 19:12:27,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12536 states. [2023-12-15 19:12:27,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12536 to 12530. [2023-12-15 19:12:27,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12530 states, 12529 states have (on average 1.228988746109027) internal successors, (15398), 12529 states have internal predecessors, (15398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:27,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12530 states to 12530 states and 15398 transitions. [2023-12-15 19:12:27,442 INFO L78 Accepts]: Start accepts. Automaton has 12530 states and 15398 transitions. Word has length 264 [2023-12-15 19:12:27,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:12:27,442 INFO L495 AbstractCegarLoop]: Abstraction has 12530 states and 15398 transitions. [2023-12-15 19:12:27,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:27,443 INFO L276 IsEmpty]: Start isEmpty. Operand 12530 states and 15398 transitions. [2023-12-15 19:12:27,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2023-12-15 19:12:27,446 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:12:27,448 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-15 19:12:27,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 19:12:27,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:12:27,654 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:12:27,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:12:27,654 INFO L85 PathProgramCache]: Analyzing trace with hash 705650872, now seen corresponding path program 1 times [2023-12-15 19:12:27,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:12:27,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524864602] [2023-12-15 19:12:27,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:12:27,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:12:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:12:27,888 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-15 19:12:27,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:12:27,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524864602] [2023-12-15 19:12:27,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524864602] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:12:27,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:12:27,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:12:27,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188725546] [2023-12-15 19:12:27,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:12:27,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:12:27,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:12:27,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:12:27,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:12:27,890 INFO L87 Difference]: Start difference. First operand 12530 states and 15398 transitions. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:29,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:12:29,431 INFO L93 Difference]: Finished difference Result 30194 states and 36858 transitions. [2023-12-15 19:12:29,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:12:29,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 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 301 [2023-12-15 19:12:29,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:12:29,456 INFO L225 Difference]: With dead ends: 30194 [2023-12-15 19:12:29,456 INFO L226 Difference]: Without dead ends: 16815 [2023-12-15 19:12:29,470 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 [2023-12-15 19:12:29,472 INFO L413 NwaCegarLoop]: 789 mSDtfsCounter, 413 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1262 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:12:29,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 856 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1262 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 19:12:29,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16815 states. [2023-12-15 19:12:29,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16815 to 16804. [2023-12-15 19:12:29,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16804 states, 16803 states have (on average 1.1906802356722015) internal successors, (20007), 16803 states have internal predecessors, (20007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:29,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16804 states to 16804 states and 20007 transitions. [2023-12-15 19:12:29,645 INFO L78 Accepts]: Start accepts. Automaton has 16804 states and 20007 transitions. Word has length 301 [2023-12-15 19:12:29,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:12:29,645 INFO L495 AbstractCegarLoop]: Abstraction has 16804 states and 20007 transitions. [2023-12-15 19:12:29,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:29,645 INFO L276 IsEmpty]: Start isEmpty. Operand 16804 states and 20007 transitions. [2023-12-15 19:12:29,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2023-12-15 19:12:29,650 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:12:29,650 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:12:29,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 19:12:29,650 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:12:29,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:12:29,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1682495600, now seen corresponding path program 1 times [2023-12-15 19:12:29,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:12:29,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647913422] [2023-12-15 19:12:29,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:12:29,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:12:29,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:12:29,949 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 277 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-15 19:12:29,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:12:29,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647913422] [2023-12-15 19:12:29,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647913422] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:12:29,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:12:29,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:12:29,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631006618] [2023-12-15 19:12:29,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:12:29,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:12:29,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:12:29,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:12:29,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:12:29,955 INFO L87 Difference]: Start difference. First operand 16804 states and 20007 transitions. Second operand has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:31,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:12:31,589 INFO L93 Difference]: Finished difference Result 40834 states and 48523 transitions. [2023-12-15 19:12:31,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:12:31,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 347 [2023-12-15 19:12:31,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:12:31,630 INFO L225 Difference]: With dead ends: 40834 [2023-12-15 19:12:31,630 INFO L226 Difference]: Without dead ends: 21899 [2023-12-15 19:12:31,648 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 [2023-12-15 19:12:31,649 INFO L413 NwaCegarLoop]: 747 mSDtfsCounter, 374 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 1403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:12:31,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 807 Invalid, 1403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-15 19:12:31,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21899 states. [2023-12-15 19:12:31,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21899 to 21893. [2023-12-15 19:12:31,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21893 states, 21892 states have (on average 1.131828978622328) internal successors, (24778), 21892 states have internal predecessors, (24778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:31,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21893 states to 21893 states and 24778 transitions. [2023-12-15 19:12:31,922 INFO L78 Accepts]: Start accepts. Automaton has 21893 states and 24778 transitions. Word has length 347 [2023-12-15 19:12:31,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:12:31,923 INFO L495 AbstractCegarLoop]: Abstraction has 21893 states and 24778 transitions. [2023-12-15 19:12:31,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:31,923 INFO L276 IsEmpty]: Start isEmpty. Operand 21893 states and 24778 transitions. [2023-12-15 19:12:31,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2023-12-15 19:12:31,930 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:12:31,930 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:12:31,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 19:12:31,931 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:12:31,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:12:31,931 INFO L85 PathProgramCache]: Analyzing trace with hash 15572169, now seen corresponding path program 1 times [2023-12-15 19:12:31,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:12:31,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513908396] [2023-12-15 19:12:31,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:12:31,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:12:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:12:32,157 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 277 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-15 19:12:32,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:12:32,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513908396] [2023-12-15 19:12:32,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513908396] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:12:32,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:12:32,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:12:32,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291359953] [2023-12-15 19:12:32,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:12:32,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:12:32,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:12:32,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:12:32,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:12:32,159 INFO L87 Difference]: Start difference. First operand 21893 states and 24778 transitions. Second operand has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:33,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:12:33,545 INFO L93 Difference]: Finished difference Result 48459 states and 55072 transitions. [2023-12-15 19:12:33,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:12:33,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 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 372 [2023-12-15 19:12:33,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:12:33,594 INFO L225 Difference]: With dead ends: 48459 [2023-12-15 19:12:33,594 INFO L226 Difference]: Without dead ends: 26567 [2023-12-15 19:12:33,614 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 [2023-12-15 19:12:33,615 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 369 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 1308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:12:33,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 787 Invalid, 1308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 19:12:33,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26567 states. [2023-12-15 19:12:33,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26567 to 26567. [2023-12-15 19:12:33,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26567 states, 26566 states have (on average 1.1179703380260484) internal successors, (29700), 26566 states have internal predecessors, (29700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:33,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26567 states to 26567 states and 29700 transitions. [2023-12-15 19:12:33,933 INFO L78 Accepts]: Start accepts. Automaton has 26567 states and 29700 transitions. Word has length 372 [2023-12-15 19:12:33,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:12:33,934 INFO L495 AbstractCegarLoop]: Abstraction has 26567 states and 29700 transitions. [2023-12-15 19:12:33,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:33,934 INFO L276 IsEmpty]: Start isEmpty. Operand 26567 states and 29700 transitions. [2023-12-15 19:12:33,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2023-12-15 19:12:33,941 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:12:33,942 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:12:33,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 19:12:33,942 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:12:33,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:12:33,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1858281297, now seen corresponding path program 1 times [2023-12-15 19:12:33,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:12:33,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418692941] [2023-12-15 19:12:33,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:12:33,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:12:33,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:12:34,199 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 284 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-12-15 19:12:34,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:12:34,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418692941] [2023-12-15 19:12:34,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418692941] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:12:34,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:12:34,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:12:34,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845319950] [2023-12-15 19:12:34,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:12:34,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:12:34,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:12:34,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:12:34,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:12:34,201 INFO L87 Difference]: Start difference. First operand 26567 states and 29700 transitions. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:35,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:12:35,751 INFO L93 Difference]: Finished difference Result 64199 states and 72103 transitions. [2023-12-15 19:12:35,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:12:35,751 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 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 382 [2023-12-15 19:12:35,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:12:35,786 INFO L225 Difference]: With dead ends: 64199 [2023-12-15 19:12:35,786 INFO L226 Difference]: Without dead ends: 35081 [2023-12-15 19:12:35,806 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 [2023-12-15 19:12:35,807 INFO L413 NwaCegarLoop]: 685 mSDtfsCounter, 288 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:12:35,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 739 Invalid, 1368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 19:12:35,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35081 states. [2023-12-15 19:12:36,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35081 to 29530. [2023-12-15 19:12:36,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29530 states, 29529 states have (on average 1.100985471908971) internal successors, (32511), 29529 states have internal predecessors, (32511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:36,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29530 states to 29530 states and 32511 transitions. [2023-12-15 19:12:36,091 INFO L78 Accepts]: Start accepts. Automaton has 29530 states and 32511 transitions. Word has length 382 [2023-12-15 19:12:36,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:12:36,092 INFO L495 AbstractCegarLoop]: Abstraction has 29530 states and 32511 transitions. [2023-12-15 19:12:36,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:36,092 INFO L276 IsEmpty]: Start isEmpty. Operand 29530 states and 32511 transitions. [2023-12-15 19:12:36,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2023-12-15 19:12:36,098 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:12:36,098 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, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:12:36,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 19:12:36,098 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:12:36,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:12:36,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1629144933, now seen corresponding path program 1 times [2023-12-15 19:12:36,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:12:36,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599103638] [2023-12-15 19:12:36,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:12:36,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:12:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:12:36,516 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-12-15 19:12:36,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:12:36,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599103638] [2023-12-15 19:12:36,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599103638] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:12:36,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:12:36,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:12:36,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019022309] [2023-12-15 19:12:36,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:12:36,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:12:36,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:12:36,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:12:36,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:12:36,519 INFO L87 Difference]: Start difference. First operand 29530 states and 32511 transitions. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:38,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:12:38,207 INFO L93 Difference]: Finished difference Result 67600 states and 74479 transitions. [2023-12-15 19:12:38,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:12:38,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 407 [2023-12-15 19:12:38,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:12:38,247 INFO L225 Difference]: With dead ends: 67600 [2023-12-15 19:12:38,247 INFO L226 Difference]: Without dead ends: 38071 [2023-12-15 19:12:38,269 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 [2023-12-15 19:12:38,269 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 465 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 1481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:12:38,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 167 Invalid, 1481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-15 19:12:38,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38071 states. [2023-12-15 19:12:38,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38071 to 29953. [2023-12-15 19:12:38,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29953 states, 29952 states have (on average 1.1005608974358974) internal successors, (32964), 29952 states have internal predecessors, (32964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:38,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29953 states to 29953 states and 32964 transitions. [2023-12-15 19:12:38,656 INFO L78 Accepts]: Start accepts. Automaton has 29953 states and 32964 transitions. Word has length 407 [2023-12-15 19:12:38,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:12:38,656 INFO L495 AbstractCegarLoop]: Abstraction has 29953 states and 32964 transitions. [2023-12-15 19:12:38,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:38,657 INFO L276 IsEmpty]: Start isEmpty. Operand 29953 states and 32964 transitions. [2023-12-15 19:12:38,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2023-12-15 19:12:38,669 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:12:38,669 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:12:38,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 19:12:38,670 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:12:38,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:12:38,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1330733117, now seen corresponding path program 1 times [2023-12-15 19:12:38,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:12:38,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891051476] [2023-12-15 19:12:38,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:12:38,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:12:38,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:12:39,313 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 118 proven. 241 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:12:39,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:12:39,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891051476] [2023-12-15 19:12:39,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891051476] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:12:39,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078730177] [2023-12-15 19:12:39,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:12:39,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:12:39,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:12:39,315 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) [2023-12-15 19:12:39,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 19:12:39,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:12:39,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 19:12:39,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:12:39,965 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 118 proven. 241 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:12:39,965 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:12:40,448 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 316 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:12:40,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078730177] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:12:40,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 19:12:40,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-12-15 19:12:40,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103601291] [2023-12-15 19:12:40,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 19:12:40,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 19:12:40,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:12:40,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 19:12:40,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2023-12-15 19:12:40,451 INFO L87 Difference]: Start difference. First operand 29953 states and 32964 transitions. Second operand has 10 states, 10 states have (on average 103.5) internal successors, (1035), 9 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:45,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:12:45,853 INFO L93 Difference]: Finished difference Result 88886 states and 97578 transitions. [2023-12-15 19:12:45,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 19:12:45,854 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 103.5) internal successors, (1035), 9 states have internal predecessors, (1035), 0 states have call successors, (0), 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 518 [2023-12-15 19:12:45,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:12:45,916 INFO L225 Difference]: With dead ends: 88886 [2023-12-15 19:12:45,916 INFO L226 Difference]: Without dead ends: 57659 [2023-12-15 19:12:45,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1039 GetRequests, 1031 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2023-12-15 19:12:45,940 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 2276 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 7758 mSolverCounterSat, 609 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2276 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 8367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 609 IncrementalHoareTripleChecker+Valid, 7758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:12:45,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2276 Valid, 432 Invalid, 8367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [609 Valid, 7758 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-12-15 19:12:45,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57659 states. [2023-12-15 19:12:46,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57659 to 36361. [2023-12-15 19:12:46,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36361 states, 36360 states have (on average 1.0971947194719471) internal successors, (39894), 36360 states have internal predecessors, (39894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:46,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36361 states to 36361 states and 39894 transitions. [2023-12-15 19:12:46,406 INFO L78 Accepts]: Start accepts. Automaton has 36361 states and 39894 transitions. Word has length 518 [2023-12-15 19:12:46,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:12:46,406 INFO L495 AbstractCegarLoop]: Abstraction has 36361 states and 39894 transitions. [2023-12-15 19:12:46,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 103.5) internal successors, (1035), 9 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:46,406 INFO L276 IsEmpty]: Start isEmpty. Operand 36361 states and 39894 transitions. [2023-12-15 19:12:46,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 635 [2023-12-15 19:12:46,424 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:12:46,425 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2023-12-15 19:12:46,432 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-15 19:12:46,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-15 19:12:46,630 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:12:46,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:12:46,631 INFO L85 PathProgramCache]: Analyzing trace with hash -178225859, now seen corresponding path program 1 times [2023-12-15 19:12:46,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:12:46,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324747109] [2023-12-15 19:12:46,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:12:46,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:12:46,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:12:47,057 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 352 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-15 19:12:47,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:12:47,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324747109] [2023-12-15 19:12:47,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324747109] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:12:47,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:12:47,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:12:47,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557271402] [2023-12-15 19:12:47,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:12:47,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:12:47,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:12:47,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:12:47,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:12:47,059 INFO L87 Difference]: Start difference. First operand 36361 states and 39894 transitions. Second operand has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 2 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:47,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:12:47,866 INFO L93 Difference]: Finished difference Result 71438 states and 78400 transitions. [2023-12-15 19:12:47,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:12:47,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 2 states have internal predecessors, (407), 0 states have call successors, (0), 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 634 [2023-12-15 19:12:47,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:12:47,904 INFO L225 Difference]: With dead ends: 71438 [2023-12-15 19:12:47,904 INFO L226 Difference]: Without dead ends: 35502 [2023-12-15 19:12:47,926 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 [2023-12-15 19:12:47,927 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 413 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 19:12:47,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 102 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 19:12:47,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35502 states. [2023-12-15 19:12:48,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35502 to 35496. [2023-12-15 19:12:48,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35496 states, 35495 states have (on average 1.096238906888294) internal successors, (38911), 35495 states have internal predecessors, (38911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:48,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35496 states to 35496 states and 38911 transitions. [2023-12-15 19:12:48,295 INFO L78 Accepts]: Start accepts. Automaton has 35496 states and 38911 transitions. Word has length 634 [2023-12-15 19:12:48,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:12:48,296 INFO L495 AbstractCegarLoop]: Abstraction has 35496 states and 38911 transitions. [2023-12-15 19:12:48,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 2 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:48,296 INFO L276 IsEmpty]: Start isEmpty. Operand 35496 states and 38911 transitions. [2023-12-15 19:12:48,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2023-12-15 19:12:48,315 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:12:48,315 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2023-12-15 19:12:48,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 19:12:48,315 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:12:48,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:12:48,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1537983450, now seen corresponding path program 1 times [2023-12-15 19:12:48,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:12:48,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207514434] [2023-12-15 19:12:48,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:12:48,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:12:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:12:48,532 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 352 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-15 19:12:48,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:12:48,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207514434] [2023-12-15 19:12:48,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207514434] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:12:48,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:12:48,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:12:48,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563350905] [2023-12-15 19:12:48,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:12:48,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:12:48,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:12:48,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:12:48,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:12:48,534 INFO L87 Difference]: Start difference. First operand 35496 states and 38911 transitions. Second operand has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:50,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:12:50,034 INFO L93 Difference]: Finished difference Result 80343 states and 88596 transitions. [2023-12-15 19:12:50,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:12:50,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 660 [2023-12-15 19:12:50,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:12:50,083 INFO L225 Difference]: With dead ends: 80343 [2023-12-15 19:12:50,083 INFO L226 Difference]: Without dead ends: 45273 [2023-12-15 19:12:50,107 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 [2023-12-15 19:12:50,108 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 438 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:12:50,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 360 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 1174 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 19:12:50,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45273 states. [2023-12-15 19:12:50,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45273 to 42719. [2023-12-15 19:12:50,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42719 states, 42718 states have (on average 1.0914134556861277) internal successors, (46623), 42718 states have internal predecessors, (46623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:50,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42719 states to 42719 states and 46623 transitions. [2023-12-15 19:12:50,646 INFO L78 Accepts]: Start accepts. Automaton has 42719 states and 46623 transitions. Word has length 660 [2023-12-15 19:12:50,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:12:50,647 INFO L495 AbstractCegarLoop]: Abstraction has 42719 states and 46623 transitions. [2023-12-15 19:12:50,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:50,647 INFO L276 IsEmpty]: Start isEmpty. Operand 42719 states and 46623 transitions. [2023-12-15 19:12:50,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2023-12-15 19:12:50,669 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:12:50,669 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-15 19:12:50,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 19:12:50,670 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:12:50,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:12:50,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1403340631, now seen corresponding path program 1 times [2023-12-15 19:12:50,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:12:50,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986310214] [2023-12-15 19:12:50,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:12:50,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:12:50,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:12:51,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1002 backedges. 841 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2023-12-15 19:12:51,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:12:51,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986310214] [2023-12-15 19:12:51,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986310214] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:12:51,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:12:51,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 19:12:51,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064861298] [2023-12-15 19:12:51,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:12:51,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:12:51,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:12:51,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:12:51,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:12:51,361 INFO L87 Difference]: Start difference. First operand 42719 states and 46623 transitions. Second operand has 4 states, 4 states have (on average 145.25) internal successors, (581), 4 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:53,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:12:53,795 INFO L93 Difference]: Finished difference Result 102928 states and 112736 transitions. [2023-12-15 19:12:53,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:12:53,795 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 145.25) internal successors, (581), 4 states have internal predecessors, (581), 0 states have call successors, (0), 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 697 [2023-12-15 19:12:53,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:12:53,857 INFO L225 Difference]: With dead ends: 102928 [2023-12-15 19:12:53,857 INFO L226 Difference]: Without dead ends: 60635 [2023-12-15 19:12:53,867 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 [2023-12-15 19:12:53,868 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 816 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 2290 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 2662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 2290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:12:53,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [816 Valid, 184 Invalid, 2662 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [372 Valid, 2290 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-15 19:12:53,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60635 states. [2023-12-15 19:12:54,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60635 to 56373. [2023-12-15 19:12:54,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56373 states, 56372 states have (on average 1.1001738451713616) internal successors, (62019), 56372 states have internal predecessors, (62019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:54,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56373 states to 56373 states and 62019 transitions. [2023-12-15 19:12:54,425 INFO L78 Accepts]: Start accepts. Automaton has 56373 states and 62019 transitions. Word has length 697 [2023-12-15 19:12:54,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:12:54,426 INFO L495 AbstractCegarLoop]: Abstraction has 56373 states and 62019 transitions. [2023-12-15 19:12:54,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 145.25) internal successors, (581), 4 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:54,426 INFO L276 IsEmpty]: Start isEmpty. Operand 56373 states and 62019 transitions. [2023-12-15 19:12:54,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2023-12-15 19:12:54,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:12:54,443 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 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] [2023-12-15 19:12:54,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 19:12:54,443 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:12:54,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:12:54,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1330978116, now seen corresponding path program 1 times [2023-12-15 19:12:54,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:12:54,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52865041] [2023-12-15 19:12:54,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:12:54,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:12:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:12:55,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 778 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-12-15 19:12:55,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:12:55,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52865041] [2023-12-15 19:12:55,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52865041] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:12:55,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:12:55,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:12:55,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071541934] [2023-12-15 19:12:55,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:12:55,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:12:55,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:12:55,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:12:55,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:12:55,031 INFO L87 Difference]: Start difference. First operand 56373 states and 62019 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) [2023-12-15 19:12:56,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:12:56,838 INFO L93 Difference]: Finished difference Result 124675 states and 137551 transitions. [2023-12-15 19:12:56,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:12:56,839 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 698 [2023-12-15 19:12:56,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:12:56,917 INFO L225 Difference]: With dead ends: 124675 [2023-12-15 19:12:56,918 INFO L226 Difference]: Without dead ends: 66170 [2023-12-15 19:12:56,958 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 [2023-12-15 19:12:56,958 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 431 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:12:56,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 591 Invalid, 1424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 1161 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 19:12:57,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66170 states. [2023-12-15 19:12:57,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66170 to 64460. [2023-12-15 19:12:57,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64460 states, 64459 states have (on average 1.0999239826866691) internal successors, (70900), 64459 states have internal predecessors, (70900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:57,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64460 states to 64460 states and 70900 transitions. [2023-12-15 19:12:57,827 INFO L78 Accepts]: Start accepts. Automaton has 64460 states and 70900 transitions. Word has length 698 [2023-12-15 19:12:57,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:12:57,828 INFO L495 AbstractCegarLoop]: Abstraction has 64460 states and 70900 transitions. [2023-12-15 19:12:57,828 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) [2023-12-15 19:12:57,828 INFO L276 IsEmpty]: Start isEmpty. Operand 64460 states and 70900 transitions. [2023-12-15 19:12:57,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 718 [2023-12-15 19:12:57,846 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:12:57,847 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-15 19:12:57,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 19:12:57,847 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:12:57,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:12:57,847 INFO L85 PathProgramCache]: Analyzing trace with hash 784413559, now seen corresponding path program 1 times [2023-12-15 19:12:57,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:12:57,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439877414] [2023-12-15 19:12:57,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:12:57,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:12:57,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:12:58,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1022 backedges. 750 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-15 19:12:58,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:12:58,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439877414] [2023-12-15 19:12:58,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439877414] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:12:58,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:12:58,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:12:58,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394140384] [2023-12-15 19:12:58,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:12:58,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:12:58,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:12:58,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:12:58,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:12:58,484 INFO L87 Difference]: Start difference. First operand 64460 states and 70900 transitions. Second operand has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:59,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:12:59,903 INFO L93 Difference]: Finished difference Result 131047 states and 144048 transitions. [2023-12-15 19:12:59,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:12:59,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 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 717 [2023-12-15 19:12:59,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:12:59,971 INFO L225 Difference]: With dead ends: 131047 [2023-12-15 19:12:59,971 INFO L226 Difference]: Without dead ends: 67013 [2023-12-15 19:13:00,004 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 [2023-12-15 19:13:00,005 INFO L413 NwaCegarLoop]: 729 mSDtfsCounter, 114 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1123 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:13:00,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 778 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1123 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 19:13:00,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67013 states. [2023-12-15 19:13:00,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67013 to 66585. [2023-12-15 19:13:00,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66585 states, 66584 states have (on average 1.0968400817013095) internal successors, (73032), 66584 states have internal predecessors, (73032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:13:00,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66585 states to 66585 states and 73032 transitions. [2023-12-15 19:13:00,766 INFO L78 Accepts]: Start accepts. Automaton has 66585 states and 73032 transitions. Word has length 717 [2023-12-15 19:13:00,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:13:00,767 INFO L495 AbstractCegarLoop]: Abstraction has 66585 states and 73032 transitions. [2023-12-15 19:13:00,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:13:00,767 INFO L276 IsEmpty]: Start isEmpty. Operand 66585 states and 73032 transitions. [2023-12-15 19:13:00,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 722 [2023-12-15 19:13:00,797 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:13:00,798 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2023-12-15 19:13:00,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 19:13:00,798 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:13:00,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:13:00,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1852151167, now seen corresponding path program 1 times [2023-12-15 19:13:00,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:13:00,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376099188] [2023-12-15 19:13:00,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:13:00,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:13:00,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:13:01,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1060 backedges. 817 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2023-12-15 19:13:01,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:13:01,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376099188] [2023-12-15 19:13:01,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376099188] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:13:01,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:13:01,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:13:01,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337105711] [2023-12-15 19:13:01,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:13:01,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:13:01,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:13:01,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:13:01,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:13:01,354 INFO L87 Difference]: Start difference. First operand 66585 states and 73032 transitions. Second operand has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:13:03,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:13:03,034 INFO L93 Difference]: Finished difference Result 151463 states and 166276 transitions. [2023-12-15 19:13:03,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:13:03,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 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 721 [2023-12-15 19:13:03,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:13:03,116 INFO L225 Difference]: With dead ends: 151463 [2023-12-15 19:13:03,117 INFO L226 Difference]: Without dead ends: 85304 [2023-12-15 19:13:03,148 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 [2023-12-15 19:13:03,148 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 395 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 1366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:13:03,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 262 Invalid, 1366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 19:13:03,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85304 states. [2023-12-15 19:13:03,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85304 to 82323. [2023-12-15 19:13:03,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82323 states, 82322 states have (on average 1.0897329996841671) internal successors, (89709), 82322 states have internal predecessors, (89709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:13:03,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82323 states to 82323 states and 89709 transitions. [2023-12-15 19:13:03,986 INFO L78 Accepts]: Start accepts. Automaton has 82323 states and 89709 transitions. Word has length 721 [2023-12-15 19:13:03,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:13:03,987 INFO L495 AbstractCegarLoop]: Abstraction has 82323 states and 89709 transitions. [2023-12-15 19:13:03,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:13:03,987 INFO L276 IsEmpty]: Start isEmpty. Operand 82323 states and 89709 transitions. [2023-12-15 19:13:04,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2023-12-15 19:13:04,010 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:13:04,010 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:13:04,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 19:13:04,011 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:13:04,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:13:04,011 INFO L85 PathProgramCache]: Analyzing trace with hash -688761868, now seen corresponding path program 1 times [2023-12-15 19:13:04,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:13:04,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437213417] [2023-12-15 19:13:04,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:13:04,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:13:04,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:13:04,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 785 proven. 0 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2023-12-15 19:13:04,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:13:04,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437213417] [2023-12-15 19:13:04,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437213417] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:13:04,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:13:04,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:13:04,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696825450] [2023-12-15 19:13:04,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:13:04,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:13:04,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:13:04,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:13:04,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:13:04,925 INFO L87 Difference]: Start difference. First operand 82323 states and 89709 transitions. Second operand has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:13:06,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:13:06,440 INFO L93 Difference]: Finished difference Result 168471 states and 183278 transitions. [2023-12-15 19:13:06,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:13:06,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 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 751 [2023-12-15 19:13:06,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:13:06,534 INFO L225 Difference]: With dead ends: 168471 [2023-12-15 19:13:06,534 INFO L226 Difference]: Without dead ends: 86574 [2023-12-15 19:13:06,581 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 [2023-12-15 19:13:06,582 INFO L413 NwaCegarLoop]: 698 mSDtfsCounter, 126 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1128 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 1202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:13:06,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 742 Invalid, 1202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1128 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 19:13:06,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86574 states. Received shutdown request... [2023-12-15 19:13:07,121 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 19:13:07,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-15 19:13:07,122 WARN L619 AbstractCegarLoop]: Verification canceled: while executing MinimizeSevpa. [2023-12-15 19:13:07,124 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:13:07,126 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 19:13:07,127 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 07:13:07 BoogieIcfgContainer [2023-12-15 19:13:07,127 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 19:13:07,128 INFO L158 Benchmark]: Toolchain (without parser) took 59416.51ms. Allocated memory was 190.8MB in the beginning and 3.9GB in the end (delta: 3.7GB). Free memory was 134.4MB in the beginning and 2.1GB in the end (delta: -1.9GB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. [2023-12-15 19:13:07,128 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 190.8MB. Free memory is still 143.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 19:13:07,128 INFO L158 Benchmark]: CACSL2BoogieTranslator took 893.05ms. Allocated memory was 190.8MB in the beginning and 234.9MB in the end (delta: 44.0MB). Free memory was 134.0MB in the beginning and 122.5MB in the end (delta: 11.6MB). Peak memory consumption was 56.4MB. Max. memory is 8.0GB. [2023-12-15 19:13:07,128 INFO L158 Benchmark]: Boogie Procedure Inliner took 263.05ms. Allocated memory is still 234.9MB. Free memory was 122.5MB in the beginning and 151.9MB in the end (delta: -29.4MB). Peak memory consumption was 60.7MB. Max. memory is 8.0GB. [2023-12-15 19:13:07,128 INFO L158 Benchmark]: Boogie Preprocessor took 357.45ms. Allocated memory was 234.9MB in the beginning and 407.9MB in the end (delta: 173.0MB). Free memory was 151.9MB in the beginning and 315.4MB in the end (delta: -163.5MB). Peak memory consumption was 61.9MB. Max. memory is 8.0GB. [2023-12-15 19:13:07,128 INFO L158 Benchmark]: RCFGBuilder took 2581.52ms. Allocated memory was 407.9MB in the beginning and 561.0MB in the end (delta: 153.1MB). Free memory was 315.4MB in the beginning and 457.5MB in the end (delta: -142.1MB). Peak memory consumption was 156.8MB. Max. memory is 8.0GB. [2023-12-15 19:13:07,129 INFO L158 Benchmark]: TraceAbstraction took 55314.32ms. Allocated memory was 561.0MB in the beginning and 3.9GB in the end (delta: 3.3GB). Free memory was 457.0MB in the beginning and 2.1GB in the end (delta: -1.6GB). Peak memory consumption was 1.9GB. Max. memory is 8.0GB. [2023-12-15 19:13:07,129 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 190.8MB. Free memory is still 143.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 893.05ms. Allocated memory was 190.8MB in the beginning and 234.9MB in the end (delta: 44.0MB). Free memory was 134.0MB in the beginning and 122.5MB in the end (delta: 11.6MB). Peak memory consumption was 56.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 263.05ms. Allocated memory is still 234.9MB. Free memory was 122.5MB in the beginning and 151.9MB in the end (delta: -29.4MB). Peak memory consumption was 60.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 357.45ms. Allocated memory was 234.9MB in the beginning and 407.9MB in the end (delta: 173.0MB). Free memory was 151.9MB in the beginning and 315.4MB in the end (delta: -163.5MB). Peak memory consumption was 61.9MB. Max. memory is 8.0GB. * RCFGBuilder took 2581.52ms. Allocated memory was 407.9MB in the beginning and 561.0MB in the end (delta: 153.1MB). Free memory was 315.4MB in the beginning and 457.5MB in the end (delta: -142.1MB). Peak memory consumption was 156.8MB. Max. memory is 8.0GB. * TraceAbstraction took 55314.32ms. Allocated memory was 561.0MB in the beginning and 3.9GB in the end (delta: 3.3GB). Free memory was 457.0MB in the beginning and 2.1GB in the end (delta: -1.6GB). Peak memory consumption was 1.9GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 153]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 153). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 528 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 55.3s, OverallIterations: 20, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 38.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10133 SdHoareTripleChecker+Valid, 33.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10133 mSDsluCounter, 10365 SdHoareTripleChecker+Invalid, 27.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1393 mSDsCounter, 5932 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 32535 IncrementalHoareTripleChecker+Invalid, 38467 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5932 mSolverCounterUnsat, 8972 mSDtfsCounter, 32535 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1620 GetRequests, 1586 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82323occurred in iteration=19, InterpolantAutomatonStates: 68, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.8s AutomataMinimizationTime, 20 MinimizatonAttempts, 47840 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 8953 NumberOfCodeBlocks, 8953 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 9711 ConstructedInterpolants, 0 QuantifiedInterpolants, 27421 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1021 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 24 InterpolantComputations, 19 PerfectInterpolantSequences, 9408/10097 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown