/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 01:17:05,580 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 01:17:05,662 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 01:17:05,668 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 01:17:05,668 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 01:17:05,692 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 01:17:05,692 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 01:17:05,693 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 01:17:05,693 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 01:17:05,696 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 01:17:05,696 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 01:17:05,697 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 01:17:05,697 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 01:17:05,698 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 01:17:05,699 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 01:17:05,699 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 01:17:05,699 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 01:17:05,699 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 01:17:05,699 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 01:17:05,699 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 01:17:05,700 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 01:17:05,700 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 01:17:05,700 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 01:17:05,700 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 01:17:05,701 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 01:17:05,701 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 01:17:05,701 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 01:17:05,701 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 01:17:05,701 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 01:17:05,702 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 01:17:05,702 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 01:17:05,703 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 01:17:05,703 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 01:17:05,703 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 01:17:05,703 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 01:17:05,703 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 01:17:05,703 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 01:17:05,704 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 01:17:05,704 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 01:17:05,704 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 01:17:05,704 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 01:17:05,704 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 01:17:05,704 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 01:17:05,705 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 01:17:05,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 01:17:05,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 01:17:05,960 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 01:17:05,960 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 01:17:05,963 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 01:17:05,964 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label15.c [2023-12-16 01:17:07,026 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 01:17:07,360 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 01:17:07,361 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label15.c [2023-12-16 01:17:07,379 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95f4b95e4/be4300156dbc4c62b115768681426d39/FLAG8f9722feb [2023-12-16 01:17:07,393 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95f4b95e4/be4300156dbc4c62b115768681426d39 [2023-12-16 01:17:07,394 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 01:17:07,396 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 01:17:07,397 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 01:17:07,398 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 01:17:07,401 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 01:17:07,401 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:17:07" (1/1) ... [2023-12-16 01:17:07,402 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6170489f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:17:07, skipping insertion in model container [2023-12-16 01:17:07,402 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:17:07" (1/1) ... [2023-12-16 01:17:07,456 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 01:17:07,845 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/Problem03_label15.c[61228,61241] [2023-12-16 01:17:07,868 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 01:17:07,881 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 01:17:08,016 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/Problem03_label15.c[61228,61241] [2023-12-16 01:17:08,023 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 01:17:08,073 INFO L206 MainTranslator]: Completed translation [2023-12-16 01:17:08,073 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:17:08 WrapperNode [2023-12-16 01:17:08,074 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 01:17:08,074 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 01:17:08,074 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 01:17:08,074 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 01:17:08,079 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:17:08" (1/1) ... [2023-12-16 01:17:08,107 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:17:08" (1/1) ... [2023-12-16 01:17:08,173 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1772 [2023-12-16 01:17:08,174 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 01:17:08,175 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 01:17:08,175 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 01:17:08,175 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 01:17:08,186 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:17:08" (1/1) ... [2023-12-16 01:17:08,186 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:17:08" (1/1) ... [2023-12-16 01:17:08,193 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:17:08" (1/1) ... [2023-12-16 01:17:08,229 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 01:17:08,229 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:17:08" (1/1) ... [2023-12-16 01:17:08,230 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:17:08" (1/1) ... [2023-12-16 01:17:08,257 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:17:08" (1/1) ... [2023-12-16 01:17:08,263 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:17:08" (1/1) ... [2023-12-16 01:17:08,280 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:17:08" (1/1) ... [2023-12-16 01:17:08,286 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:17:08" (1/1) ... [2023-12-16 01:17:08,293 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 01:17:08,294 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 01:17:08,294 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 01:17:08,294 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 01:17:08,295 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:17:08" (1/1) ... [2023-12-16 01:17:08,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 01:17:08,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:17:08,346 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 01:17:08,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 01:17:08,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 01:17:08,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 01:17:08,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 01:17:08,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 01:17:08,486 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 01:17:08,488 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 01:17:09,789 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 01:17:09,819 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 01:17:09,819 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 01:17:09,820 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:17:09 BoogieIcfgContainer [2023-12-16 01:17:09,820 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 01:17:09,821 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 01:17:09,821 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 01:17:09,824 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 01:17:09,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 01:17:07" (1/3) ... [2023-12-16 01:17:09,824 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dd60e96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:17:09, skipping insertion in model container [2023-12-16 01:17:09,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:17:08" (2/3) ... [2023-12-16 01:17:09,825 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dd60e96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:17:09, skipping insertion in model container [2023-12-16 01:17:09,825 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:17:09" (3/3) ... [2023-12-16 01:17:09,825 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label15.c [2023-12-16 01:17:09,837 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 01:17:09,837 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 01:17:09,873 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 01:17:09,878 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;@6a6c5cb5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 01:17:09,878 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 01:17:09,883 INFO L276 IsEmpty]: Start isEmpty. Operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:09,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-16 01:17:09,893 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:17:09,893 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:17:09,894 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:17:09,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:17:09,898 INFO L85 PathProgramCache]: Analyzing trace with hash -583127319, now seen corresponding path program 1 times [2023-12-16 01:17:09,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:17:09,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674098557] [2023-12-16 01:17:09,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:09,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:17:10,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:10,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:17:10,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:17:10,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674098557] [2023-12-16 01:17:10,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674098557] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:17:10,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:17:10,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:17:10,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701984767] [2023-12-16 01:17:10,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:17:10,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 01:17:10,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:17:10,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 01:17:10,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 01:17:10,418 INFO L87 Difference]: Start difference. First operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 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 99.5) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:10,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:17:10,476 INFO L93 Difference]: Finished difference Result 479 states and 913 transitions. [2023-12-16 01:17:10,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 01:17:10,479 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 99.5) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2023-12-16 01:17:10,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:17:10,490 INFO L225 Difference]: With dead ends: 479 [2023-12-16 01:17:10,490 INFO L226 Difference]: Without dead ends: 238 [2023-12-16 01:17:10,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 01:17:10,497 INFO L413 NwaCegarLoop]: 392 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, 392 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 01:17:10,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 392 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 01:17:10,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-12-16 01:17:10,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2023-12-16 01:17:10,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.6540084388185654) internal successors, (392), 237 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:10,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 392 transitions. [2023-12-16 01:17:10,544 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 392 transitions. Word has length 199 [2023-12-16 01:17:10,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:17:10,546 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 392 transitions. [2023-12-16 01:17:10,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 99.5) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:10,547 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 392 transitions. [2023-12-16 01:17:10,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-16 01:17:10,553 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:17:10,553 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:17:10,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 01:17:10,554 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:17:10,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:17:10,555 INFO L85 PathProgramCache]: Analyzing trace with hash -249985985, now seen corresponding path program 1 times [2023-12-16 01:17:10,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:17:10,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677868254] [2023-12-16 01:17:10,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:10,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:17:10,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:11,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:17:11,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:17:11,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677868254] [2023-12-16 01:17:11,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677868254] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:17:11,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:17:11,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:17:11,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678147880] [2023-12-16 01:17:11,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:17:11,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:17:11,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:17:11,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:17:11,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:17:11,024 INFO L87 Difference]: Start difference. First operand 238 states and 392 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:11,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:17:11,782 INFO L93 Difference]: Finished difference Result 686 states and 1135 transitions. [2023-12-16 01:17:11,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:17:11,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2023-12-16 01:17:11,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:17:11,785 INFO L225 Difference]: With dead ends: 686 [2023-12-16 01:17:11,785 INFO L226 Difference]: Without dead ends: 449 [2023-12-16 01:17:11,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:17:11,787 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 78 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 01:17:11,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 90 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 01:17:11,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2023-12-16 01:17:11,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 447. [2023-12-16 01:17:11,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 1.6233183856502242) internal successors, (724), 446 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:11,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 724 transitions. [2023-12-16 01:17:11,810 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 724 transitions. Word has length 199 [2023-12-16 01:17:11,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:17:11,810 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 724 transitions. [2023-12-16 01:17:11,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:11,811 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 724 transitions. [2023-12-16 01:17:11,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-12-16 01:17:11,812 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:17:11,812 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:17:11,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 01:17:11,813 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:17:11,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:17:11,813 INFO L85 PathProgramCache]: Analyzing trace with hash -740008075, now seen corresponding path program 1 times [2023-12-16 01:17:11,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:17:11,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205369019] [2023-12-16 01:17:11,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:11,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:17:11,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:12,065 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:17:12,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:17:12,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205369019] [2023-12-16 01:17:12,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205369019] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:17:12,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:17:12,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:17:12,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850265797] [2023-12-16 01:17:12,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:17:12,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:17:12,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:17:12,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:17:12,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:17:12,072 INFO L87 Difference]: Start difference. First operand 447 states and 724 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 2 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:12,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:17:12,687 INFO L93 Difference]: Finished difference Result 1315 states and 2137 transitions. [2023-12-16 01:17:12,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:17:12,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 2 states have internal predecessors, (204), 0 states have call successors, (0), 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 204 [2023-12-16 01:17:12,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:17:12,691 INFO L225 Difference]: With dead ends: 1315 [2023-12-16 01:17:12,691 INFO L226 Difference]: Without dead ends: 869 [2023-12-16 01:17:12,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:17:12,698 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 249 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:17:12,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 155 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 01:17:12,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2023-12-16 01:17:12,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 867. [2023-12-16 01:17:12,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 866 states have (on average 1.5265588914549653) internal successors, (1322), 866 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:12,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1322 transitions. [2023-12-16 01:17:12,723 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1322 transitions. Word has length 204 [2023-12-16 01:17:12,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:17:12,726 INFO L495 AbstractCegarLoop]: Abstraction has 867 states and 1322 transitions. [2023-12-16 01:17:12,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 2 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:12,730 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1322 transitions. [2023-12-16 01:17:12,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-12-16 01:17:12,732 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:17:12,733 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 01:17:12,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 01:17:12,733 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:17:12,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:17:12,740 INFO L85 PathProgramCache]: Analyzing trace with hash -968841762, now seen corresponding path program 1 times [2023-12-16 01:17:12,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:17:12,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417231090] [2023-12-16 01:17:12,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:12,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:17:12,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:12,874 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:17:12,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:17:12,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417231090] [2023-12-16 01:17:12,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417231090] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:17:12,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:17:12,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:17:12,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36481340] [2023-12-16 01:17:12,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:17:12,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:17:12,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:17:12,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:17:12,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:17:12,876 INFO L87 Difference]: Start difference. First operand 867 states and 1322 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:13,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:17:13,531 INFO L93 Difference]: Finished difference Result 2565 states and 3927 transitions. [2023-12-16 01:17:13,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:17:13,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2023-12-16 01:17:13,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:17:13,536 INFO L225 Difference]: With dead ends: 2565 [2023-12-16 01:17:13,536 INFO L226 Difference]: Without dead ends: 1699 [2023-12-16 01:17:13,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:17:13,538 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 249 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:17:13,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 88 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 01:17:13,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2023-12-16 01:17:13,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1683. [2023-12-16 01:17:13,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1682 states have (on average 1.497027348394768) internal successors, (2518), 1682 states have internal predecessors, (2518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:13,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 2518 transitions. [2023-12-16 01:17:13,561 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 2518 transitions. Word has length 207 [2023-12-16 01:17:13,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:17:13,562 INFO L495 AbstractCegarLoop]: Abstraction has 1683 states and 2518 transitions. [2023-12-16 01:17:13,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:13,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 2518 transitions. [2023-12-16 01:17:13,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-12-16 01:17:13,565 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:17:13,565 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:17:13,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 01:17:13,565 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:17:13,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:17:13,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1133672913, now seen corresponding path program 1 times [2023-12-16 01:17:13,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:17:13,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969948705] [2023-12-16 01:17:13,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:13,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:17:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:14,107 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 01:17:14,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:17:14,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969948705] [2023-12-16 01:17:14,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969948705] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:17:14,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:17:14,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:17:14,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173393554] [2023-12-16 01:17:14,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:17:14,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 01:17:14,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:17:14,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 01:17:14,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:17:14,111 INFO L87 Difference]: Start difference. First operand 1683 states and 2518 transitions. Second operand has 4 states, 4 states have (on average 52.25) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:14,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:17:14,787 INFO L93 Difference]: Finished difference Result 3509 states and 5291 transitions. [2023-12-16 01:17:14,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 01:17:14,787 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 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 214 [2023-12-16 01:17:14,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:17:14,792 INFO L225 Difference]: With dead ends: 3509 [2023-12-16 01:17:14,793 INFO L226 Difference]: Without dead ends: 1653 [2023-12-16 01:17:14,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:17:14,795 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 330 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:17:14,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 44 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 01:17:14,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2023-12-16 01:17:14,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1653. [2023-12-16 01:17:14,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1653 states, 1652 states have (on average 1.362590799031477) internal successors, (2251), 1652 states have internal predecessors, (2251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:14,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1653 states to 1653 states and 2251 transitions. [2023-12-16 01:17:14,825 INFO L78 Accepts]: Start accepts. Automaton has 1653 states and 2251 transitions. Word has length 214 [2023-12-16 01:17:14,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:17:14,825 INFO L495 AbstractCegarLoop]: Abstraction has 1653 states and 2251 transitions. [2023-12-16 01:17:14,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:14,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1653 states and 2251 transitions. [2023-12-16 01:17:14,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2023-12-16 01:17:14,829 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:17:14,829 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-12-16 01:17:14,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 01:17:14,830 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:17:14,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:17:14,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1535059572, now seen corresponding path program 1 times [2023-12-16 01:17:14,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:17:14,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707557375] [2023-12-16 01:17:14,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:14,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:17:14,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:15,074 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-16 01:17:15,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:17:15,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707557375] [2023-12-16 01:17:15,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707557375] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:17:15,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:17:15,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:17:15,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172964621] [2023-12-16 01:17:15,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:17:15,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:17:15,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:17:15,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:17:15,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:17:15,076 INFO L87 Difference]: Start difference. First operand 1653 states and 2251 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:15,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:17:15,564 INFO L93 Difference]: Finished difference Result 4942 states and 6735 transitions. [2023-12-16 01:17:15,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:17:15,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 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 227 [2023-12-16 01:17:15,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:17:15,574 INFO L225 Difference]: With dead ends: 4942 [2023-12-16 01:17:15,574 INFO L226 Difference]: Without dead ends: 3290 [2023-12-16 01:17:15,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:17:15,577 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 230 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 01:17:15,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 47 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 01:17:15,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3290 states. [2023-12-16 01:17:15,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3290 to 3281. [2023-12-16 01:17:15,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3281 states, 3280 states have (on average 1.3539634146341464) internal successors, (4441), 3280 states have internal predecessors, (4441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:15,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3281 states to 3281 states and 4441 transitions. [2023-12-16 01:17:15,629 INFO L78 Accepts]: Start accepts. Automaton has 3281 states and 4441 transitions. Word has length 227 [2023-12-16 01:17:15,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:17:15,630 INFO L495 AbstractCegarLoop]: Abstraction has 3281 states and 4441 transitions. [2023-12-16 01:17:15,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:15,631 INFO L276 IsEmpty]: Start isEmpty. Operand 3281 states and 4441 transitions. [2023-12-16 01:17:15,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2023-12-16 01:17:15,636 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:17:15,637 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:17:15,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 01:17:15,637 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:17:15,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:17:15,638 INFO L85 PathProgramCache]: Analyzing trace with hash -265198555, now seen corresponding path program 1 times [2023-12-16 01:17:15,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:17:15,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687780642] [2023-12-16 01:17:15,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:15,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:17:15,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:15,853 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:17:15,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:17:15,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687780642] [2023-12-16 01:17:15,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687780642] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:17:15,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:17:15,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:17:15,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275487714] [2023-12-16 01:17:15,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:17:15,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:17:15,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:17:15,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:17:15,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:17:15,854 INFO L87 Difference]: Start difference. First operand 3281 states and 4441 transitions. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 2 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:16,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:17:16,402 INFO L93 Difference]: Finished difference Result 8200 states and 11075 transitions. [2023-12-16 01:17:16,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:17:16,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 2 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 227 [2023-12-16 01:17:16,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:17:16,417 INFO L225 Difference]: With dead ends: 8200 [2023-12-16 01:17:16,418 INFO L226 Difference]: Without dead ends: 4920 [2023-12-16 01:17:16,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:17:16,423 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 203 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 01:17:16,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 82 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 01:17:16,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4920 states. [2023-12-16 01:17:16,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4920 to 4917. [2023-12-16 01:17:16,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4917 states, 4916 states have (on average 1.3454027664768105) internal successors, (6614), 4916 states have internal predecessors, (6614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:16,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4917 states to 4917 states and 6614 transitions. [2023-12-16 01:17:16,509 INFO L78 Accepts]: Start accepts. Automaton has 4917 states and 6614 transitions. Word has length 227 [2023-12-16 01:17:16,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:17:16,509 INFO L495 AbstractCegarLoop]: Abstraction has 4917 states and 6614 transitions. [2023-12-16 01:17:16,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 2 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:16,510 INFO L276 IsEmpty]: Start isEmpty. Operand 4917 states and 6614 transitions. [2023-12-16 01:17:16,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2023-12-16 01:17:16,519 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:17:16,519 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:17:16,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 01:17:16,519 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:17:16,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:17:16,519 INFO L85 PathProgramCache]: Analyzing trace with hash -554449740, now seen corresponding path program 1 times [2023-12-16 01:17:16,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:17:16,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354204476] [2023-12-16 01:17:16,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:16,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:17:16,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:16,996 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:17:16,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:17:16,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354204476] [2023-12-16 01:17:16,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354204476] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:17:16,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:17:16,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:17:16,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601969302] [2023-12-16 01:17:16,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:17:16,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 01:17:16,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:17:16,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 01:17:16,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:17:16,998 INFO L87 Difference]: Start difference. First operand 4917 states and 6614 transitions. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:17,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:17:17,967 INFO L93 Difference]: Finished difference Result 13446 states and 18091 transitions. [2023-12-16 01:17:17,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 01:17:17,967 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 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 230 [2023-12-16 01:17:17,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:17:17,991 INFO L225 Difference]: With dead ends: 13446 [2023-12-16 01:17:17,992 INFO L226 Difference]: Without dead ends: 8182 [2023-12-16 01:17:17,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:17:18,000 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 198 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 1220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 01:17:18,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 111 Invalid, 1220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 01:17:18,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8182 states. [2023-12-16 01:17:18,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8182 to 8181. [2023-12-16 01:17:18,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8181 states, 8180 states have (on average 1.3259168704156479) internal successors, (10846), 8180 states have internal predecessors, (10846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:18,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8181 states to 8181 states and 10846 transitions. [2023-12-16 01:17:18,116 INFO L78 Accepts]: Start accepts. Automaton has 8181 states and 10846 transitions. Word has length 230 [2023-12-16 01:17:18,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:17:18,116 INFO L495 AbstractCegarLoop]: Abstraction has 8181 states and 10846 transitions. [2023-12-16 01:17:18,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:18,117 INFO L276 IsEmpty]: Start isEmpty. Operand 8181 states and 10846 transitions. [2023-12-16 01:17:18,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-12-16 01:17:18,128 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:17:18,129 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 01:17:18,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 01:17:18,129 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:17:18,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:17:18,129 INFO L85 PathProgramCache]: Analyzing trace with hash -342625802, now seen corresponding path program 1 times [2023-12-16 01:17:18,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:17:18,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387627555] [2023-12-16 01:17:18,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:18,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:17:18,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:18,594 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 34 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:17:18,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:17:18,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387627555] [2023-12-16 01:17:18,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387627555] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:17:18,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152753473] [2023-12-16 01:17:18,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:18,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:17:18,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:17:18,610 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 01:17:18,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 01:17:18,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:18,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 01:17:18,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:17:19,019 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-16 01:17:19,020 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:17:19,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152753473] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:17:19,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:17:19,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-12-16 01:17:19,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871428593] [2023-12-16 01:17:19,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:17:19,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:17:19,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:17:19,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:17:19,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:17:19,022 INFO L87 Difference]: Start difference. First operand 8181 states and 10846 transitions. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 2 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:19,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:17:19,649 INFO L93 Difference]: Finished difference Result 24524 states and 32519 transitions. [2023-12-16 01:17:19,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:17:19,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 2 states have internal predecessors, (202), 0 states have call successors, (0), 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 234 [2023-12-16 01:17:19,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:17:19,692 INFO L225 Difference]: With dead ends: 24524 [2023-12-16 01:17:19,692 INFO L226 Difference]: Without dead ends: 16344 [2023-12-16 01:17:19,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:17:19,704 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 55 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 01:17:19,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 78 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 01:17:19,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16344 states. [2023-12-16 01:17:19,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16344 to 16336. [2023-12-16 01:17:19,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16336 states, 16335 states have (on average 1.290052035506581) internal successors, (21073), 16335 states have internal predecessors, (21073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:19,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16336 states to 16336 states and 21073 transitions. [2023-12-16 01:17:19,975 INFO L78 Accepts]: Start accepts. Automaton has 16336 states and 21073 transitions. Word has length 234 [2023-12-16 01:17:19,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:17:19,975 INFO L495 AbstractCegarLoop]: Abstraction has 16336 states and 21073 transitions. [2023-12-16 01:17:19,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 2 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:19,976 INFO L276 IsEmpty]: Start isEmpty. Operand 16336 states and 21073 transitions. [2023-12-16 01:17:19,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2023-12-16 01:17:19,999 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:17:19,999 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:17:20,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 01:17:20,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:17:20,205 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:17:20,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:17:20,206 INFO L85 PathProgramCache]: Analyzing trace with hash -792127165, now seen corresponding path program 1 times [2023-12-16 01:17:20,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:17:20,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82467251] [2023-12-16 01:17:20,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:20,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:17:20,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:20,543 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 37 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:17:20,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:17:20,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82467251] [2023-12-16 01:17:20,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82467251] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:17:20,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852713272] [2023-12-16 01:17:20,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:20,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:17:20,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:17:20,544 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 01:17:20,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 01:17:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:20,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 01:17:20,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:17:20,942 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-16 01:17:20,942 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:17:20,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852713272] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:17:20,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:17:20,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-16 01:17:20,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488095315] [2023-12-16 01:17:20,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:17:20,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:17:20,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:17:20,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:17:20,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:17:20,944 INFO L87 Difference]: Start difference. First operand 16336 states and 21073 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:21,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:17:21,492 INFO L93 Difference]: Finished difference Result 32679 states and 42160 transitions. [2023-12-16 01:17:21,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:17:21,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 237 [2023-12-16 01:17:21,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:17:21,512 INFO L225 Difference]: With dead ends: 32679 [2023-12-16 01:17:21,512 INFO L226 Difference]: Without dead ends: 16344 [2023-12-16 01:17:21,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:17:21,526 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 24 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 01:17:21,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 297 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 01:17:21,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16344 states. [2023-12-16 01:17:21,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16344 to 16336. [2023-12-16 01:17:21,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16336 states, 16335 states have (on average 1.2759718396082032) internal successors, (20843), 16335 states have internal predecessors, (20843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:21,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16336 states to 16336 states and 20843 transitions. [2023-12-16 01:17:21,687 INFO L78 Accepts]: Start accepts. Automaton has 16336 states and 20843 transitions. Word has length 237 [2023-12-16 01:17:21,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:17:21,687 INFO L495 AbstractCegarLoop]: Abstraction has 16336 states and 20843 transitions. [2023-12-16 01:17:21,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:21,688 INFO L276 IsEmpty]: Start isEmpty. Operand 16336 states and 20843 transitions. [2023-12-16 01:17:21,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-12-16 01:17:21,705 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:17:21,705 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:17:21,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-16 01:17:21,909 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,SelfDestructingSolverStorable9 [2023-12-16 01:17:21,909 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:17:21,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:17:21,910 INFO L85 PathProgramCache]: Analyzing trace with hash 2145306960, now seen corresponding path program 1 times [2023-12-16 01:17:21,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:17:21,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139413045] [2023-12-16 01:17:21,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:21,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:17:21,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:22,189 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-16 01:17:22,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:17:22,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139413045] [2023-12-16 01:17:22,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139413045] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:17:22,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:17:22,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:17:22,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469471022] [2023-12-16 01:17:22,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:17:22,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:17:22,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:17:22,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:17:22,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:17:22,191 INFO L87 Difference]: Start difference. First operand 16336 states and 20843 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 2 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:22,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:17:22,835 INFO L93 Difference]: Finished difference Result 48100 states and 61363 transitions. [2023-12-16 01:17:22,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:17:22,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 2 states have internal predecessors, (212), 0 states have call successors, (0), 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 244 [2023-12-16 01:17:22,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:17:22,883 INFO L225 Difference]: With dead ends: 48100 [2023-12-16 01:17:22,883 INFO L226 Difference]: Without dead ends: 31765 [2023-12-16 01:17:22,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:17:22,904 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 208 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 01:17:22,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 117 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 01:17:22,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31765 states. [2023-12-16 01:17:23,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31765 to 31764. [2023-12-16 01:17:23,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31764 states, 31763 states have (on average 1.1759909328463936) internal successors, (37353), 31763 states have internal predecessors, (37353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:23,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31764 states to 31764 states and 37353 transitions. [2023-12-16 01:17:23,412 INFO L78 Accepts]: Start accepts. Automaton has 31764 states and 37353 transitions. Word has length 244 [2023-12-16 01:17:23,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:17:23,412 INFO L495 AbstractCegarLoop]: Abstraction has 31764 states and 37353 transitions. [2023-12-16 01:17:23,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 2 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:23,412 INFO L276 IsEmpty]: Start isEmpty. Operand 31764 states and 37353 transitions. [2023-12-16 01:17:23,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2023-12-16 01:17:23,441 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:17:23,441 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:17:23,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 01:17:23,442 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:17:23,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:17:23,442 INFO L85 PathProgramCache]: Analyzing trace with hash -85368803, now seen corresponding path program 1 times [2023-12-16 01:17:23,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:17:23,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686886667] [2023-12-16 01:17:23,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:23,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:17:23,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:23,753 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 68 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-16 01:17:23,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:17:23,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686886667] [2023-12-16 01:17:23,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686886667] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:17:23,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155018610] [2023-12-16 01:17:23,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:23,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:17:23,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:17:23,754 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 01:17:23,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 01:17:23,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:23,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 01:17:23,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:17:23,973 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 01:17:23,973 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:17:23,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155018610] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:17:23,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:17:23,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-16 01:17:23,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264826234] [2023-12-16 01:17:23,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:17:23,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:17:23,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:17:23,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:17:23,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:17:23,975 INFO L87 Difference]: Start difference. First operand 31764 states and 37353 transitions. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:24,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:17:24,667 INFO L93 Difference]: Finished difference Result 62719 states and 73635 transitions. [2023-12-16 01:17:24,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:17:24,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 265 [2023-12-16 01:17:24,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:17:24,716 INFO L225 Difference]: With dead ends: 62719 [2023-12-16 01:17:24,716 INFO L226 Difference]: Without dead ends: 30956 [2023-12-16 01:17:24,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:17:24,745 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 188 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 01:17:24,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 342 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 01:17:24,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30956 states. [2023-12-16 01:17:25,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30956 to 30952. [2023-12-16 01:17:25,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30952 states, 30951 states have (on average 1.1113049659138639) internal successors, (34396), 30951 states have internal predecessors, (34396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:25,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30952 states to 30952 states and 34396 transitions. [2023-12-16 01:17:25,150 INFO L78 Accepts]: Start accepts. Automaton has 30952 states and 34396 transitions. Word has length 265 [2023-12-16 01:17:25,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:17:25,150 INFO L495 AbstractCegarLoop]: Abstraction has 30952 states and 34396 transitions. [2023-12-16 01:17:25,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:25,151 INFO L276 IsEmpty]: Start isEmpty. Operand 30952 states and 34396 transitions. [2023-12-16 01:17:25,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2023-12-16 01:17:25,179 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:17:25,179 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:17:25,203 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-16 01:17:25,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:17:25,385 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:17:25,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:17:25,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1465971927, now seen corresponding path program 2 times [2023-12-16 01:17:25,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:17:25,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252786552] [2023-12-16 01:17:25,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:25,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:17:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:25,700 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 71 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-16 01:17:25,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:17:25,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252786552] [2023-12-16 01:17:25,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252786552] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:17:25,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51769330] [2023-12-16 01:17:25,701 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 01:17:25,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:17:25,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:17:25,703 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 01:17:25,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 01:17:25,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 01:17:25,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 01:17:25,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 01:17:25,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:17:25,967 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 01:17:25,968 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:17:25,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51769330] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:17:25,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:17:25,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-16 01:17:25,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307919046] [2023-12-16 01:17:25,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:17:25,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:17:25,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:17:25,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:17:25,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:17:25,970 INFO L87 Difference]: Start difference. First operand 30952 states and 34396 transitions. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:26,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:17:26,618 INFO L93 Difference]: Finished difference Result 61289 states and 68130 transitions. [2023-12-16 01:17:26,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:17:26,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 265 [2023-12-16 01:17:26,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:17:26,664 INFO L225 Difference]: With dead ends: 61289 [2023-12-16 01:17:26,664 INFO L226 Difference]: Without dead ends: 30338 [2023-12-16 01:17:26,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:17:26,689 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 213 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 01:17:26,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 301 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 01:17:26,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30338 states. [2023-12-16 01:17:26,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30338 to 29522. [2023-12-16 01:17:26,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29522 states, 29521 states have (on average 1.0860743199756107) internal successors, (32062), 29521 states have internal predecessors, (32062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:27,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29522 states to 29522 states and 32062 transitions. [2023-12-16 01:17:27,000 INFO L78 Accepts]: Start accepts. Automaton has 29522 states and 32062 transitions. Word has length 265 [2023-12-16 01:17:27,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:17:27,000 INFO L495 AbstractCegarLoop]: Abstraction has 29522 states and 32062 transitions. [2023-12-16 01:17:27,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:27,001 INFO L276 IsEmpty]: Start isEmpty. Operand 29522 states and 32062 transitions. [2023-12-16 01:17:27,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2023-12-16 01:17:27,021 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:17:27,021 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:17:27,028 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-16 01:17:27,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:17:27,228 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:17:27,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:17:27,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1483417044, now seen corresponding path program 1 times [2023-12-16 01:17:27,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:17:27,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002946651] [2023-12-16 01:17:27,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:27,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:17:27,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:27,670 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-16 01:17:27,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:17:27,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002946651] [2023-12-16 01:17:27,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002946651] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:17:27,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:17:27,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:17:27,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824871278] [2023-12-16 01:17:27,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:17:27,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 01:17:27,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:17:27,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 01:17:27,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:17:27,688 INFO L87 Difference]: Start difference. First operand 29522 states and 32062 transitions. Second operand has 4 states, 4 states have (on average 60.25) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:28,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:17:28,682 INFO L93 Difference]: Finished difference Result 104768 states and 113522 transitions. [2023-12-16 01:17:28,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 01:17:28,682 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.25) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 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 271 [2023-12-16 01:17:28,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:17:28,777 INFO L225 Difference]: With dead ends: 104768 [2023-12-16 01:17:28,777 INFO L226 Difference]: Without dead ends: 75247 [2023-12-16 01:17:28,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:17:28,804 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 711 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 01:17:28,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 298 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 01:17:28,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75247 states. [2023-12-16 01:17:29,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75247 to 63467. [2023-12-16 01:17:29,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63467 states, 63466 states have (on average 1.0856836731478272) internal successors, (68904), 63466 states have internal predecessors, (68904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:29,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63467 states to 63467 states and 68904 transitions. [2023-12-16 01:17:29,944 INFO L78 Accepts]: Start accepts. Automaton has 63467 states and 68904 transitions. Word has length 271 [2023-12-16 01:17:29,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:17:29,944 INFO L495 AbstractCegarLoop]: Abstraction has 63467 states and 68904 transitions. [2023-12-16 01:17:29,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.25) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:29,944 INFO L276 IsEmpty]: Start isEmpty. Operand 63467 states and 68904 transitions. [2023-12-16 01:17:30,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2023-12-16 01:17:30,007 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:17:30,007 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:17:30,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 01:17:30,008 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:17:30,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:17:30,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1820060990, now seen corresponding path program 1 times [2023-12-16 01:17:30,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:17:30,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064487162] [2023-12-16 01:17:30,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:30,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:17:30,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:30,371 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 89 proven. 6 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-16 01:17:30,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:17:30,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064487162] [2023-12-16 01:17:30,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064487162] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:17:30,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820489860] [2023-12-16 01:17:30,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:30,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:17:30,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:17:30,372 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 01:17:30,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 01:17:30,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:30,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 01:17:30,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:17:30,726 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 89 proven. 40 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-16 01:17:30,726 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 01:17:30,939 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 89 proven. 40 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-16 01:17:30,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820489860] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 01:17:30,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 01:17:30,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 6 [2023-12-16 01:17:30,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845077409] [2023-12-16 01:17:30,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 01:17:30,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 01:17:30,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:17:30,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 01:17:30,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 01:17:30,941 INFO L87 Difference]: Start difference. First operand 63467 states and 68904 transitions. Second operand has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:34,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:17:34,797 INFO L93 Difference]: Finished difference Result 290525 states and 315204 transitions. [2023-12-16 01:17:34,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 01:17:34,798 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 277 [2023-12-16 01:17:34,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:17:35,230 INFO L225 Difference]: With dead ends: 290525 [2023-12-16 01:17:35,231 INFO L226 Difference]: Without dead ends: 227057 [2023-12-16 01:17:35,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 558 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-12-16 01:17:35,334 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 2362 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 3611 mSolverCounterSat, 562 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2362 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 4173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 562 IncrementalHoareTripleChecker+Valid, 3611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-16 01:17:35,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2362 Valid, 407 Invalid, 4173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [562 Valid, 3611 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-16 01:17:35,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227057 states. [2023-12-16 01:17:37,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227057 to 205494. [2023-12-16 01:17:38,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205494 states, 205493 states have (on average 1.07011431046313) internal successors, (219901), 205493 states have internal predecessors, (219901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:38,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205494 states to 205494 states and 219901 transitions. [2023-12-16 01:17:38,719 INFO L78 Accepts]: Start accepts. Automaton has 205494 states and 219901 transitions. Word has length 277 [2023-12-16 01:17:38,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:17:38,719 INFO L495 AbstractCegarLoop]: Abstraction has 205494 states and 219901 transitions. [2023-12-16 01:17:38,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:38,719 INFO L276 IsEmpty]: Start isEmpty. Operand 205494 states and 219901 transitions. [2023-12-16 01:17:38,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2023-12-16 01:17:38,920 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:17:38,920 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-16 01:17:38,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 01:17:39,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-16 01:17:39,122 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:17:39,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:17:39,123 INFO L85 PathProgramCache]: Analyzing trace with hash -562305475, now seen corresponding path program 1 times [2023-12-16 01:17:39,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:17:39,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300692013] [2023-12-16 01:17:39,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:39,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:17:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:39,509 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-12-16 01:17:39,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:17:39,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300692013] [2023-12-16 01:17:39,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300692013] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:17:39,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:17:39,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:17:39,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188741047] [2023-12-16 01:17:39,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:17:39,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:17:39,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:17:39,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:17:39,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:17:39,511 INFO L87 Difference]: Start difference. First operand 205494 states and 219901 transitions. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 2 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:41,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:17:41,298 INFO L93 Difference]: Finished difference Result 452278 states and 483751 transitions. [2023-12-16 01:17:41,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:17:41,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 2 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 313 [2023-12-16 01:17:41,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:17:41,987 INFO L225 Difference]: With dead ends: 452278 [2023-12-16 01:17:41,987 INFO L226 Difference]: Without dead ends: 246785 [2023-12-16 01:17:42,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:17:42,079 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 162 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 01:17:42,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 105 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 01:17:42,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246785 states. [2023-12-16 01:17:45,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246785 to 246564. [2023-12-16 01:17:45,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246564 states, 246563 states have (on average 1.0669362394195399) internal successors, (263067), 246563 states have internal predecessors, (263067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:46,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246564 states to 246564 states and 263067 transitions. [2023-12-16 01:17:46,019 INFO L78 Accepts]: Start accepts. Automaton has 246564 states and 263067 transitions. Word has length 313 [2023-12-16 01:17:46,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:17:46,019 INFO L495 AbstractCegarLoop]: Abstraction has 246564 states and 263067 transitions. [2023-12-16 01:17:46,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 2 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:46,019 INFO L276 IsEmpty]: Start isEmpty. Operand 246564 states and 263067 transitions. [2023-12-16 01:17:46,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2023-12-16 01:17:46,059 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:17:46,060 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-16 01:17:46,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 01:17:46,060 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:17:46,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:17:46,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1020387668, now seen corresponding path program 1 times [2023-12-16 01:17:46,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:17:46,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532218974] [2023-12-16 01:17:46,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:46,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:17:46,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:46,426 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-12-16 01:17:46,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:17:46,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532218974] [2023-12-16 01:17:46,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532218974] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:17:46,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:17:46,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:17:46,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688302047] [2023-12-16 01:17:46,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:17:46,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:17:46,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:17:46,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:17:46,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:17:46,430 INFO L87 Difference]: Start difference. First operand 246564 states and 263067 transitions. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 2 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:48,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:17:48,720 INFO L93 Difference]: Finished difference Result 583392 states and 623929 transitions. [2023-12-16 01:17:48,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:17:48,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 2 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 337 [2023-12-16 01:17:48,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:17:49,219 INFO L225 Difference]: With dead ends: 583392 [2023-12-16 01:17:49,219 INFO L226 Difference]: Without dead ends: 336829 [2023-12-16 01:17:49,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:17:49,303 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 155 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 01:17:49,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 139 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 01:17:49,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336829 states. [2023-12-16 01:17:53,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336829 to 279673. [2023-12-16 01:17:53,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279673 states, 279672 states have (on average 1.072885380016591) internal successors, (300056), 279672 states have internal predecessors, (300056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:54,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279673 states to 279673 states and 300056 transitions. [2023-12-16 01:17:54,307 INFO L78 Accepts]: Start accepts. Automaton has 279673 states and 300056 transitions. Word has length 337 [2023-12-16 01:17:54,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:17:54,307 INFO L495 AbstractCegarLoop]: Abstraction has 279673 states and 300056 transitions. [2023-12-16 01:17:54,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 2 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:54,307 INFO L276 IsEmpty]: Start isEmpty. Operand 279673 states and 300056 transitions. [2023-12-16 01:17:54,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2023-12-16 01:17:54,365 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:17:54,365 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 01:17:54,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-16 01:17:54,366 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:17:54,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:17:54,366 INFO L85 PathProgramCache]: Analyzing trace with hash -456826838, now seen corresponding path program 1 times [2023-12-16 01:17:54,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:17:54,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827733878] [2023-12-16 01:17:54,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:54,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:17:54,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:55,061 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 169 proven. 11 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-12-16 01:17:55,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:17:55,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827733878] [2023-12-16 01:17:55,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827733878] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:17:55,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642612529] [2023-12-16 01:17:55,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:55,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:17:55,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:17:55,063 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 01:17:55,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 01:17:55,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:55,338 INFO L262 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 01:17:55,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:17:55,461 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-12-16 01:17:55,461 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:17:55,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642612529] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:17:55,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:17:55,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-16 01:17:55,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256588135] [2023-12-16 01:17:55,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:17:55,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 01:17:55,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:17:55,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 01:17:55,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 01:17:55,463 INFO L87 Difference]: Start difference. First operand 279673 states and 300056 transitions. Second operand has 4 states, 4 states have (on average 77.0) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:58,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:17:58,256 INFO L93 Difference]: Finished difference Result 619110 states and 663921 transitions. [2023-12-16 01:17:58,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 01:17:58,257 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 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 358 [2023-12-16 01:17:58,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:17:58,879 INFO L225 Difference]: With dead ends: 619110 [2023-12-16 01:17:58,879 INFO L226 Difference]: Without dead ends: 336190 [2023-12-16 01:17:58,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 01:17:58,999 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 335 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 1220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 01:17:58,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 108 Invalid, 1220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 01:17:59,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336190 states. [2023-12-16 01:18:03,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336190 to 295702. [2023-12-16 01:18:03,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295702 states, 295701 states have (on average 1.0585287165075532) internal successors, (313008), 295701 states have internal predecessors, (313008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:18:04,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295702 states to 295702 states and 313008 transitions. [2023-12-16 01:18:04,243 INFO L78 Accepts]: Start accepts. Automaton has 295702 states and 313008 transitions. Word has length 358 [2023-12-16 01:18:04,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:18:04,244 INFO L495 AbstractCegarLoop]: Abstraction has 295702 states and 313008 transitions. [2023-12-16 01:18:04,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:18:04,244 INFO L276 IsEmpty]: Start isEmpty. Operand 295702 states and 313008 transitions. [2023-12-16 01:18:04,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2023-12-16 01:18:04,336 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:18:04,336 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 01:18:04,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-16 01:18:04,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-16 01:18:04,545 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:18:04,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:18:04,545 INFO L85 PathProgramCache]: Analyzing trace with hash 584003626, now seen corresponding path program 1 times [2023-12-16 01:18:04,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:18:04,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334619319] [2023-12-16 01:18:04,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:18:04,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:18:04,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:18:04,812 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 239 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-16 01:18:04,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:18:04,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334619319] [2023-12-16 01:18:04,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334619319] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:18:04,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:18:04,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:18:04,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184307070] [2023-12-16 01:18:04,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:18:04,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:18:04,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:18:04,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:18:04,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:18:04,814 INFO L87 Difference]: Start difference. First operand 295702 states and 313008 transitions. Second operand has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-16 01:18:05,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:18:05,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:18:05,060 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 26 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 01:18:05,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 170 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 01:18:05,061 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 01:18:05,061 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 01:18:05,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-16 01:18:05,067 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (295702states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (695 states constructed, input type IntersectNwa). [2023-12-16 01:18:05,071 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:18:05,072 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 01:18:05,074 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 01:18:05 BoogieIcfgContainer [2023-12-16 01:18:05,074 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 01:18:05,074 INFO L158 Benchmark]: Toolchain (without parser) took 57678.75ms. Allocated memory was 186.6MB in the beginning and 7.6GB in the end (delta: 7.4GB). Free memory was 146.8MB in the beginning and 3.7GB in the end (delta: -3.6GB). Peak memory consumption was 3.9GB. Max. memory is 8.0GB. [2023-12-16 01:18:05,074 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 186.6MB. Free memory is still 144.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 01:18:05,074 INFO L158 Benchmark]: CACSL2BoogieTranslator took 676.33ms. Allocated memory is still 186.6MB. Free memory was 146.4MB in the beginning and 153.5MB in the end (delta: -7.1MB). Peak memory consumption was 76.7MB. Max. memory is 8.0GB. [2023-12-16 01:18:05,075 INFO L158 Benchmark]: Boogie Procedure Inliner took 99.72ms. Allocated memory is still 186.6MB. Free memory was 153.5MB in the beginning and 138.7MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-16 01:18:05,075 INFO L158 Benchmark]: Boogie Preprocessor took 118.57ms. Allocated memory is still 186.6MB. Free memory was 138.7MB in the beginning and 126.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-16 01:18:05,075 INFO L158 Benchmark]: RCFGBuilder took 1526.22ms. Allocated memory was 186.6MB in the beginning and 288.4MB in the end (delta: 101.7MB). Free memory was 126.1MB in the beginning and 183.8MB in the end (delta: -57.7MB). Peak memory consumption was 85.5MB. Max. memory is 8.0GB. [2023-12-16 01:18:05,075 INFO L158 Benchmark]: TraceAbstraction took 55252.55ms. Allocated memory was 288.4MB in the beginning and 7.6GB in the end (delta: 7.3GB). Free memory was 183.3MB in the beginning and 3.7GB in the end (delta: -3.6GB). Peak memory consumption was 3.8GB. Max. memory is 8.0GB. [2023-12-16 01:18:05,076 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 186.6MB. Free memory is still 144.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 676.33ms. Allocated memory is still 186.6MB. Free memory was 146.4MB in the beginning and 153.5MB in the end (delta: -7.1MB). Peak memory consumption was 76.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 99.72ms. Allocated memory is still 186.6MB. Free memory was 153.5MB in the beginning and 138.7MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 118.57ms. Allocated memory is still 186.6MB. Free memory was 138.7MB in the beginning and 126.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * RCFGBuilder took 1526.22ms. Allocated memory was 186.6MB in the beginning and 288.4MB in the end (delta: 101.7MB). Free memory was 126.1MB in the beginning and 183.8MB in the end (delta: -57.7MB). Peak memory consumption was 85.5MB. Max. memory is 8.0GB. * TraceAbstraction took 55252.55ms. Allocated memory was 288.4MB in the beginning and 7.6GB in the end (delta: 7.3GB). Free memory was 183.3MB in the beginning and 3.7GB in the end (delta: -3.6GB). Peak memory consumption was 3.8GB. 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: 1645]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 1645). Cancelled while NwaCegarLoop was constructing difference of abstraction (295702states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (695 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 240 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 55.2s, OverallIterations: 19, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.6s, AutomataDifference: 23.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5976 SdHoareTripleChecker+Valid, 12.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5976 mSDsluCounter, 3371 SdHoareTripleChecker+Invalid, 9.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 846 mSDsCounter, 2034 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14175 IncrementalHoareTripleChecker+Invalid, 16209 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2034 mSolverCounterUnsat, 2525 mSDtfsCounter, 14175 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1968 GetRequests, 1926 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=295702occurred in iteration=18, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 20.7s AutomataMinimizationTime, 18 MinimizatonAttempts, 132078 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 6.9s InterpolantComputationTime, 6523 NumberOfCodeBlocks, 6523 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 6774 ConstructedInterpolants, 0 QuantifiedInterpolants, 21486 SizeOfPredicates, 6 NumberOfNonLiveVariables, 3013 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 26 InterpolantComputations, 18 PerfectInterpolantSequences, 2309/2430 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 [2023-12-16 01:18:05,110 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 !ENTRY org.eclipse.osgi 4 0 2023-12-16 01:18:05.319 !MESSAGE Application error !STACK 1 org.eclipse.core.internal.resources.ResourceException(/)[568]: java.io.FileNotFoundException: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95f4b95e4/.metadata/.plugins/org.eclipse.core.resources/.root/1.tree (No such file or directory) at java.base/java.io.FileOutputStream.open0(Native Method) at java.base/java.io.FileOutputStream.open(FileOutputStream.java:298) at java.base/java.io.FileOutputStream.(FileOutputStream.java:237) at java.base/java.io.FileOutputStream.(FileOutputStream.java:187) at org.eclipse.core.internal.localstore.SafeFileOutputStream.(SafeFileOutputStream.java:55) at org.eclipse.core.internal.resources.SaveManager.saveTree(SaveManager.java:1381) at org.eclipse.core.internal.resources.SaveManager.save(SaveManager.java:1168) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2333) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2322) at de.uni_freiburg.informatik.ultimate.core.coreplugin.UltimateCore.start(UltimateCore.java:190) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594) at org.eclipse.equinox.launcher.Main.run(Main.java:1465) at org.eclipse.equinox.launcher.Main.main(Main.java:1438) An error has occurred. See the log file /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95f4b95e4/.metadata/.log.