/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 03:38:36,976 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 03:38:37,015 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 03:38:37,018 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 03:38:37,019 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 03:38:37,033 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 03:38:37,033 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 03:38:37,033 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 03:38:37,034 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 03:38:37,034 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 03:38:37,034 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 03:38:37,034 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 03:38:37,035 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 03:38:37,035 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 03:38:37,035 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 03:38:37,036 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 03:38:37,036 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 03:38:37,036 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 03:38:37,036 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 03:38:37,037 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 03:38:37,037 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 03:38:37,039 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 03:38:37,040 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 03:38:37,040 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 03:38:37,040 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 03:38:37,040 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 03:38:37,040 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 03:38:37,041 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 03:38:37,041 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 03:38:37,041 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 03:38:37,041 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 03:38:37,041 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 03:38:37,041 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 03:38:37,042 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 03:38:37,042 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 03:38:37,042 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 03:38:37,042 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 03:38:37,042 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 03:38:37,043 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 03:38:37,043 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 03:38:37,043 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 03:38:37,046 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 03:38:37,046 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 03:38:37,046 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 03:38:37,233 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 03:38:37,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 03:38:37,250 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 03:38:37,251 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 03:38:37,256 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 03:38:37,257 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label13.c [2023-12-19 03:38:38,264 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 03:38:38,642 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 03:38:38,643 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label13.c [2023-12-19 03:38:38,672 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/862ae91db/a7946dade9fd4bd8a841d53321a8b472/FLAG9065938a2 [2023-12-19 03:38:38,686 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/862ae91db/a7946dade9fd4bd8a841d53321a8b472 [2023-12-19 03:38:38,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 03:38:38,690 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 03:38:38,692 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 03:38:38,692 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 03:38:38,700 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 03:38:38,701 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 03:38:38" (1/1) ... [2023-12-19 03:38:38,702 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34b14978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:38:38, skipping insertion in model container [2023-12-19 03:38:38,702 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 03:38:38" (1/1) ... [2023-12-19 03:38:38,786 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 03:38:39,006 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/Problem12_label13.c[3765,3778] [2023-12-19 03:38:39,627 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 03:38:39,636 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 03:38:39,656 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/Problem12_label13.c[3765,3778] [2023-12-19 03:38:39,941 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 03:38:39,957 INFO L206 MainTranslator]: Completed translation [2023-12-19 03:38:39,959 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:38:39 WrapperNode [2023-12-19 03:38:39,959 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 03:38:39,961 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 03:38:39,961 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 03:38:39,961 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 03:38:39,965 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:38:39" (1/1) ... [2023-12-19 03:38:40,015 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:38:39" (1/1) ... [2023-12-19 03:38:40,293 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4761 [2023-12-19 03:38:40,294 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 03:38:40,294 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 03:38:40,294 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 03:38:40,295 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 03:38:40,302 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:38:39" (1/1) ... [2023-12-19 03:38:40,303 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:38:39" (1/1) ... [2023-12-19 03:38:40,344 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:38:39" (1/1) ... [2023-12-19 03:38:40,427 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 03:38:40,427 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:38:39" (1/1) ... [2023-12-19 03:38:40,428 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:38:39" (1/1) ... [2023-12-19 03:38:40,562 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:38:39" (1/1) ... [2023-12-19 03:38:40,577 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:38:39" (1/1) ... [2023-12-19 03:38:40,615 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:38:39" (1/1) ... [2023-12-19 03:38:40,629 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:38:39" (1/1) ... [2023-12-19 03:38:40,666 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 03:38:40,668 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 03:38:40,668 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 03:38:40,668 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 03:38:40,669 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:38:39" (1/1) ... [2023-12-19 03:38:40,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 03:38:40,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 03:38:40,691 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 03:38:40,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 03:38:40,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 03:38:40,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 03:38:40,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 03:38:40,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 03:38:40,771 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 03:38:40,773 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 03:38:43,835 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 03:38:43,874 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 03:38:43,874 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 03:38:43,874 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:38:43 BoogieIcfgContainer [2023-12-19 03:38:43,875 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 03:38:43,876 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 03:38:43,876 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 03:38:43,878 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 03:38:43,878 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 03:38:38" (1/3) ... [2023-12-19 03:38:43,879 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e85d919 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 03:38:43, skipping insertion in model container [2023-12-19 03:38:43,879 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:38:39" (2/3) ... [2023-12-19 03:38:43,879 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e85d919 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 03:38:43, skipping insertion in model container [2023-12-19 03:38:43,879 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:38:43" (3/3) ... [2023-12-19 03:38:43,880 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label13.c [2023-12-19 03:38:43,891 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 03:38:43,891 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 03:38:43,929 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 03:38:43,933 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;@2eccc003, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 03:38:43,933 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 03:38:43,938 INFO L276 IsEmpty]: Start isEmpty. Operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:38:43,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-19 03:38:43,943 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:38:43,943 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] [2023-12-19 03:38:43,944 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:38:43,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:38:43,947 INFO L85 PathProgramCache]: Analyzing trace with hash 2123845861, now seen corresponding path program 1 times [2023-12-19 03:38:43,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:38:43,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177196344] [2023-12-19 03:38:43,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:38:43,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:38:44,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:38:44,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 03:38:44,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:38:44,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177196344] [2023-12-19 03:38:44,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177196344] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:38:44,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:38:44,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 03:38:44,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485709782] [2023-12-19 03:38:44,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:38:44,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 03:38:44,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:38:44,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 03:38:44,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 03:38:44,070 INFO L87 Difference]: Start difference. First operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 0 states have call successors, (0), 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 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:38:44,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:38:44,128 INFO L93 Difference]: Finished difference Result 1511 states and 3005 transitions. [2023-12-19 03:38:44,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 03:38:44,130 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-12-19 03:38:44,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:38:44,160 INFO L225 Difference]: With dead ends: 1511 [2023-12-19 03:38:44,160 INFO L226 Difference]: Without dead ends: 754 [2023-12-19 03:38:44,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 03:38:44,167 INFO L413 NwaCegarLoop]: 1438 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, 1438 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 03:38:44,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1438 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 03:38:44,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2023-12-19 03:38:44,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2023-12-19 03:38:44,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 1.9096945551128819) internal successors, (1438), 753 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:38:44,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1438 transitions. [2023-12-19 03:38:44,214 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1438 transitions. Word has length 27 [2023-12-19 03:38:44,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:38:44,215 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 1438 transitions. [2023-12-19 03:38:44,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:38:44,215 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1438 transitions. [2023-12-19 03:38:44,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-19 03:38:44,215 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:38:44,216 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] [2023-12-19 03:38:44,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 03:38:44,217 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:38:44,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:38:44,217 INFO L85 PathProgramCache]: Analyzing trace with hash 343483841, now seen corresponding path program 1 times [2023-12-19 03:38:44,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:38:44,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947453676] [2023-12-19 03:38:44,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:38:44,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:38:44,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:38:44,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 03:38:44,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:38:44,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947453676] [2023-12-19 03:38:44,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947453676] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:38:44,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:38:44,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 03:38:44,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987562003] [2023-12-19 03:38:44,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:38:44,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:38:44,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:38:44,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:38:44,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:38:44,297 INFO L87 Difference]: Start difference. First operand 754 states and 1438 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:38:47,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:38:47,313 INFO L93 Difference]: Finished difference Result 2258 states and 4311 transitions. [2023-12-19 03:38:47,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:38:47,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-12-19 03:38:47,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:38:47,320 INFO L225 Difference]: With dead ends: 2258 [2023-12-19 03:38:47,320 INFO L226 Difference]: Without dead ends: 1505 [2023-12-19 03:38:47,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:38:47,322 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 787 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2278 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 3276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 03:38:47,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 75 Invalid, 3276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2278 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 03:38:47,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2023-12-19 03:38:47,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1505. [2023-12-19 03:38:47,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1505 states, 1504 states have (on average 1.8703457446808511) internal successors, (2813), 1504 states have internal predecessors, (2813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:38:47,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 2813 transitions. [2023-12-19 03:38:47,354 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 2813 transitions. Word has length 27 [2023-12-19 03:38:47,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:38:47,354 INFO L495 AbstractCegarLoop]: Abstraction has 1505 states and 2813 transitions. [2023-12-19 03:38:47,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:38:47,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 2813 transitions. [2023-12-19 03:38:47,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 03:38:47,356 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:38:47,357 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:38:47,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 03:38:47,357 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:38:47,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:38:47,358 INFO L85 PathProgramCache]: Analyzing trace with hash -544964307, now seen corresponding path program 1 times [2023-12-19 03:38:47,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:38:47,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188919645] [2023-12-19 03:38:47,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:38:47,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:38:47,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:38:47,527 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 03:38:47,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:38:47,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188919645] [2023-12-19 03:38:47,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188919645] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:38:47,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:38:47,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 03:38:47,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354506708] [2023-12-19 03:38:47,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:38:47,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:38:47,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:38:47,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:38:47,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:38:47,530 INFO L87 Difference]: Start difference. First operand 1505 states and 2813 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:38:50,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:38:50,124 INFO L93 Difference]: Finished difference Result 4513 states and 8437 transitions. [2023-12-19 03:38:50,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:38:50,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2023-12-19 03:38:50,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:38:50,134 INFO L225 Difference]: With dead ends: 4513 [2023-12-19 03:38:50,135 INFO L226 Difference]: Without dead ends: 3009 [2023-12-19 03:38:50,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:38:50,142 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 918 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 2860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 03:38:50,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 352 Invalid, 2860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 03:38:50,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3009 states. [2023-12-19 03:38:50,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3009 to 3007. [2023-12-19 03:38:50,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3007 states, 3006 states have (on average 1.6533599467731204) internal successors, (4970), 3006 states have internal predecessors, (4970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:38:50,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3007 states to 3007 states and 4970 transitions. [2023-12-19 03:38:50,191 INFO L78 Accepts]: Start accepts. Automaton has 3007 states and 4970 transitions. Word has length 100 [2023-12-19 03:38:50,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:38:50,191 INFO L495 AbstractCegarLoop]: Abstraction has 3007 states and 4970 transitions. [2023-12-19 03:38:50,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:38:50,192 INFO L276 IsEmpty]: Start isEmpty. Operand 3007 states and 4970 transitions. [2023-12-19 03:38:50,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-19 03:38:50,193 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:38:50,193 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:38:50,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 03:38:50,193 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:38:50,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:38:50,194 INFO L85 PathProgramCache]: Analyzing trace with hash -2097469946, now seen corresponding path program 1 times [2023-12-19 03:38:50,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:38:50,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831610197] [2023-12-19 03:38:50,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:38:50,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:38:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:38:50,532 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 03:38:50,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:38:50,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831610197] [2023-12-19 03:38:50,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831610197] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:38:50,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:38:50,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:38:50,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768189305] [2023-12-19 03:38:50,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:38:50,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 03:38:50,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:38:50,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 03:38:50,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 03:38:50,535 INFO L87 Difference]: Start difference. First operand 3007 states and 4970 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:38:54,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:38:54,704 INFO L93 Difference]: Finished difference Result 8266 states and 13428 transitions. [2023-12-19 03:38:54,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 03:38:54,705 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2023-12-19 03:38:54,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:38:54,720 INFO L225 Difference]: With dead ends: 8266 [2023-12-19 03:38:54,720 INFO L226 Difference]: Without dead ends: 5260 [2023-12-19 03:38:54,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 03:38:54,725 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 2153 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 4999 mSolverCounterSat, 851 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2153 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 5850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 851 IncrementalHoareTripleChecker+Valid, 4999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-19 03:38:54,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2153 Valid, 351 Invalid, 5850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [851 Valid, 4999 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-19 03:38:54,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5260 states. [2023-12-19 03:38:54,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5260 to 5260. [2023-12-19 03:38:54,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5260 states, 5259 states have (on average 1.510363186917665) internal successors, (7943), 5259 states have internal predecessors, (7943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:38:54,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5260 states to 5260 states and 7943 transitions. [2023-12-19 03:38:54,801 INFO L78 Accepts]: Start accepts. Automaton has 5260 states and 7943 transitions. Word has length 113 [2023-12-19 03:38:54,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:38:54,801 INFO L495 AbstractCegarLoop]: Abstraction has 5260 states and 7943 transitions. [2023-12-19 03:38:54,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:38:54,801 INFO L276 IsEmpty]: Start isEmpty. Operand 5260 states and 7943 transitions. [2023-12-19 03:38:54,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-12-19 03:38:54,803 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:38:54,803 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:38:54,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 03:38:54,804 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:38:54,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:38:54,804 INFO L85 PathProgramCache]: Analyzing trace with hash -733649917, now seen corresponding path program 1 times [2023-12-19 03:38:54,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:38:54,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79064803] [2023-12-19 03:38:54,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:38:54,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:38:54,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:38:55,133 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-19 03:38:55,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:38:55,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79064803] [2023-12-19 03:38:55,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79064803] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 03:38:55,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442141097] [2023-12-19 03:38:55,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:38:55,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:38:55,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 03:38:55,137 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 03:38:55,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 03:38:55,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:38:55,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 03:38:55,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 03:38:55,409 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-19 03:38:55,409 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 03:38:55,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442141097] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:38:55,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 03:38:55,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-12-19 03:38:55,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732168498] [2023-12-19 03:38:55,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:38:55,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:38:55,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:38:55,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:38:55,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 03:38:55,414 INFO L87 Difference]: Start difference. First operand 5260 states and 7943 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:38:58,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:38:58,018 INFO L93 Difference]: Finished difference Result 14274 states and 22312 transitions. [2023-12-19 03:38:58,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:38:58,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 0 states have call successors, (0), 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 168 [2023-12-19 03:38:58,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:38:58,046 INFO L225 Difference]: With dead ends: 14274 [2023-12-19 03:38:58,047 INFO L226 Difference]: Without dead ends: 9766 [2023-12-19 03:38:58,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 03:38:58,056 INFO L413 NwaCegarLoop]: 657 mSDtfsCounter, 621 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2457 mSolverCounterSat, 585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 3042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 585 IncrementalHoareTripleChecker+Valid, 2457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 03:38:58,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 664 Invalid, 3042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [585 Valid, 2457 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 03:38:58,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9766 states. [2023-12-19 03:38:58,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9766 to 9766. [2023-12-19 03:38:58,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9766 states, 9765 states have (on average 1.387916026625704) internal successors, (13553), 9765 states have internal predecessors, (13553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:38:58,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9766 states to 9766 states and 13553 transitions. [2023-12-19 03:38:58,195 INFO L78 Accepts]: Start accepts. Automaton has 9766 states and 13553 transitions. Word has length 168 [2023-12-19 03:38:58,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:38:58,195 INFO L495 AbstractCegarLoop]: Abstraction has 9766 states and 13553 transitions. [2023-12-19 03:38:58,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:38:58,196 INFO L276 IsEmpty]: Start isEmpty. Operand 9766 states and 13553 transitions. [2023-12-19 03:38:58,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-12-19 03:38:58,197 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:38:58,197 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 03:38:58,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 03:38:58,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:38:58,398 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:38:58,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:38:58,399 INFO L85 PathProgramCache]: Analyzing trace with hash 2114987767, now seen corresponding path program 1 times [2023-12-19 03:38:58,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:38:58,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918233825] [2023-12-19 03:38:58,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:38:58,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:38:58,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:38:58,599 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 03:38:58,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:38:58,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918233825] [2023-12-19 03:38:58,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918233825] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:38:58,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:38:58,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:38:58,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949305311] [2023-12-19 03:38:58,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:38:58,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 03:38:58,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:38:58,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 03:38:58,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 03:38:58,604 INFO L87 Difference]: Start difference. First operand 9766 states and 13553 transitions. Second operand has 4 states, 4 states have (on average 46.0) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:01,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:39:01,682 INFO L93 Difference]: Finished difference Result 23325 states and 32177 transitions. [2023-12-19 03:39:01,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 03:39:01,685 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.0) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 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 184 [2023-12-19 03:39:01,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:39:01,722 INFO L225 Difference]: With dead ends: 23325 [2023-12-19 03:39:01,722 INFO L226 Difference]: Without dead ends: 14274 [2023-12-19 03:39:01,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 03:39:01,733 INFO L413 NwaCegarLoop]: 693 mSDtfsCounter, 690 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 3807 mSolverCounterSat, 327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 4134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 3807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 03:39:01,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 711 Invalid, 4134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [327 Valid, 3807 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 03:39:01,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14274 states. [2023-12-19 03:39:01,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14274 to 14272. [2023-12-19 03:39:01,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14272 states, 14271 states have (on average 1.2780463877794128) internal successors, (18239), 14271 states have internal predecessors, (18239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:01,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14272 states to 14272 states and 18239 transitions. [2023-12-19 03:39:01,943 INFO L78 Accepts]: Start accepts. Automaton has 14272 states and 18239 transitions. Word has length 184 [2023-12-19 03:39:01,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:39:01,943 INFO L495 AbstractCegarLoop]: Abstraction has 14272 states and 18239 transitions. [2023-12-19 03:39:01,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.0) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:01,943 INFO L276 IsEmpty]: Start isEmpty. Operand 14272 states and 18239 transitions. [2023-12-19 03:39:01,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2023-12-19 03:39:01,945 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:39:01,946 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 03:39:01,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 03:39:01,946 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:39:01,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:39:01,946 INFO L85 PathProgramCache]: Analyzing trace with hash 652772798, now seen corresponding path program 1 times [2023-12-19 03:39:01,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:39:01,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034990973] [2023-12-19 03:39:01,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:39:01,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:39:01,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:39:02,098 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-12-19 03:39:02,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:39:02,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034990973] [2023-12-19 03:39:02,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034990973] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:39:02,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:39:02,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:39:02,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541606636] [2023-12-19 03:39:02,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:39:02,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:39:02,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:39:02,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:39:02,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:39:02,102 INFO L87 Difference]: Start difference. First operand 14272 states and 18239 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:04,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:39:04,639 INFO L93 Difference]: Finished difference Result 34551 states and 45268 transitions. [2023-12-19 03:39:04,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:39:04,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 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 258 [2023-12-19 03:39:04,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:39:04,675 INFO L225 Difference]: With dead ends: 34551 [2023-12-19 03:39:04,675 INFO L226 Difference]: Without dead ends: 21031 [2023-12-19 03:39:04,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:39:04,688 INFO L413 NwaCegarLoop]: 1299 mSDtfsCounter, 773 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2163 mSolverCounterSat, 704 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 2867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 704 IncrementalHoareTripleChecker+Valid, 2163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-19 03:39:04,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [773 Valid, 1306 Invalid, 2867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [704 Valid, 2163 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-19 03:39:04,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21031 states. [2023-12-19 03:39:04,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21031 to 20280. [2023-12-19 03:39:04,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20280 states, 20279 states have (on average 1.2444893732432565) internal successors, (25237), 20279 states have internal predecessors, (25237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:04,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20280 states to 20280 states and 25237 transitions. [2023-12-19 03:39:04,913 INFO L78 Accepts]: Start accepts. Automaton has 20280 states and 25237 transitions. Word has length 258 [2023-12-19 03:39:04,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:39:04,914 INFO L495 AbstractCegarLoop]: Abstraction has 20280 states and 25237 transitions. [2023-12-19 03:39:04,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:04,914 INFO L276 IsEmpty]: Start isEmpty. Operand 20280 states and 25237 transitions. [2023-12-19 03:39:04,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2023-12-19 03:39:04,916 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:39:04,916 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 03:39:04,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 03:39:04,917 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:39:04,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:39:04,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1209074646, now seen corresponding path program 1 times [2023-12-19 03:39:04,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:39:04,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653234730] [2023-12-19 03:39:04,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:39:04,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:39:04,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:39:05,060 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-12-19 03:39:05,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:39:05,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653234730] [2023-12-19 03:39:05,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653234730] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:39:05,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:39:05,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:39:05,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846929604] [2023-12-19 03:39:05,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:39:05,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:39:05,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:39:05,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:39:05,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:39:05,062 INFO L87 Difference]: Start difference. First operand 20280 states and 25237 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:07,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:39:07,687 INFO L93 Difference]: Finished difference Result 56330 states and 70971 transitions. [2023-12-19 03:39:07,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:39:07,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 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 267 [2023-12-19 03:39:07,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:39:07,736 INFO L225 Difference]: With dead ends: 56330 [2023-12-19 03:39:07,737 INFO L226 Difference]: Without dead ends: 36802 [2023-12-19 03:39:07,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:39:07,750 INFO L413 NwaCegarLoop]: 1288 mSDtfsCounter, 736 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2326 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 1295 SdHoareTripleChecker+Invalid, 2853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 2326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-19 03:39:07,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 1295 Invalid, 2853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 2326 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-19 03:39:07,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36802 states. [2023-12-19 03:39:08,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36802 to 36051. [2023-12-19 03:39:08,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36051 states, 36050 states have (on average 1.1753952843273232) internal successors, (42373), 36050 states have internal predecessors, (42373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:08,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36051 states to 36051 states and 42373 transitions. [2023-12-19 03:39:08,116 INFO L78 Accepts]: Start accepts. Automaton has 36051 states and 42373 transitions. Word has length 267 [2023-12-19 03:39:08,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:39:08,117 INFO L495 AbstractCegarLoop]: Abstraction has 36051 states and 42373 transitions. [2023-12-19 03:39:08,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:08,117 INFO L276 IsEmpty]: Start isEmpty. Operand 36051 states and 42373 transitions. [2023-12-19 03:39:08,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2023-12-19 03:39:08,121 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:39:08,121 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:39:08,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 03:39:08,122 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:39:08,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:39:08,122 INFO L85 PathProgramCache]: Analyzing trace with hash -109446835, now seen corresponding path program 1 times [2023-12-19 03:39:08,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:39:08,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432868163] [2023-12-19 03:39:08,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:39:08,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:39:08,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:39:08,283 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-12-19 03:39:08,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:39:08,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432868163] [2023-12-19 03:39:08,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432868163] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:39:08,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:39:08,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 03:39:08,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786720977] [2023-12-19 03:39:08,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:39:08,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:39:08,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:39:08,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:39:08,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:39:08,288 INFO L87 Difference]: Start difference. First operand 36051 states and 42373 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:10,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:39:10,984 INFO L93 Difference]: Finished difference Result 87121 states and 104493 transitions. [2023-12-19 03:39:10,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:39:10,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 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 316 [2023-12-19 03:39:10,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:39:11,058 INFO L225 Difference]: With dead ends: 87121 [2023-12-19 03:39:11,058 INFO L226 Difference]: Without dead ends: 51822 [2023-12-19 03:39:11,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:39:11,080 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 689 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1976 mSolverCounterSat, 856 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 2832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 856 IncrementalHoareTripleChecker+Valid, 1976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-19 03:39:11,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 432 Invalid, 2832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [856 Valid, 1976 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-19 03:39:11,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51822 states. [2023-12-19 03:39:11,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51822 to 46565. [2023-12-19 03:39:11,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46565 states, 46564 states have (on average 1.1605746928957994) internal successors, (54041), 46564 states have internal predecessors, (54041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:11,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46565 states to 46565 states and 54041 transitions. [2023-12-19 03:39:11,571 INFO L78 Accepts]: Start accepts. Automaton has 46565 states and 54041 transitions. Word has length 316 [2023-12-19 03:39:11,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:39:11,571 INFO L495 AbstractCegarLoop]: Abstraction has 46565 states and 54041 transitions. [2023-12-19 03:39:11,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:11,571 INFO L276 IsEmpty]: Start isEmpty. Operand 46565 states and 54041 transitions. [2023-12-19 03:39:11,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2023-12-19 03:39:11,576 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:39:11,577 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:39:11,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 03:39:11,577 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:39:11,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:39:11,577 INFO L85 PathProgramCache]: Analyzing trace with hash -2028841433, now seen corresponding path program 1 times [2023-12-19 03:39:11,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:39:11,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852756378] [2023-12-19 03:39:11,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:39:11,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:39:11,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:39:12,415 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 52 proven. 228 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-12-19 03:39:12,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:39:12,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852756378] [2023-12-19 03:39:12,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852756378] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 03:39:12,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038566384] [2023-12-19 03:39:12,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:39:12,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:39:12,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 03:39:12,417 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 03:39:12,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 03:39:12,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:39:12,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 03:39:12,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 03:39:12,599 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-12-19 03:39:12,599 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 03:39:12,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038566384] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:39:12,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 03:39:12,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-19 03:39:12,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014536922] [2023-12-19 03:39:12,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:39:12,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:39:12,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:39:12,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:39:12,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 03:39:12,601 INFO L87 Difference]: Start difference. First operand 46565 states and 54041 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:15,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:39:15,071 INFO L93 Difference]: Finished difference Result 92378 states and 107325 transitions. [2023-12-19 03:39:15,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:39:15,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 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 377 [2023-12-19 03:39:15,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:39:15,127 INFO L225 Difference]: With dead ends: 92378 [2023-12-19 03:39:15,128 INFO L226 Difference]: Without dead ends: 46565 [2023-12-19 03:39:15,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 377 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 03:39:15,158 INFO L413 NwaCegarLoop]: 1178 mSDtfsCounter, 778 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2193 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 2724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 2193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-19 03:39:15,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 1185 Invalid, 2724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 2193 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-19 03:39:15,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46565 states. [2023-12-19 03:39:15,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46565 to 42059. [2023-12-19 03:39:15,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42059 states, 42058 states have (on average 1.1045936563792857) internal successors, (46457), 42058 states have internal predecessors, (46457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:15,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42059 states to 42059 states and 46457 transitions. [2023-12-19 03:39:15,711 INFO L78 Accepts]: Start accepts. Automaton has 42059 states and 46457 transitions. Word has length 377 [2023-12-19 03:39:15,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:39:15,711 INFO L495 AbstractCegarLoop]: Abstraction has 42059 states and 46457 transitions. [2023-12-19 03:39:15,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:15,712 INFO L276 IsEmpty]: Start isEmpty. Operand 42059 states and 46457 transitions. [2023-12-19 03:39:15,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2023-12-19 03:39:15,719 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:39:15,719 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:39:15,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 03:39:15,926 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 [2023-12-19 03:39:15,927 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:39:15,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:39:15,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1889302540, now seen corresponding path program 1 times [2023-12-19 03:39:15,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:39:15,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039110511] [2023-12-19 03:39:15,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:39:15,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:39:15,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:39:16,222 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 316 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-12-19 03:39:16,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:39:16,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039110511] [2023-12-19 03:39:16,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039110511] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:39:16,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:39:16,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:39:16,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694185662] [2023-12-19 03:39:16,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:39:16,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:39:16,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:39:16,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:39:16,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:39:16,224 INFO L87 Difference]: Start difference. First operand 42059 states and 46457 transitions. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:18,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:39:18,504 INFO L93 Difference]: Finished difference Result 85619 states and 94490 transitions. [2023-12-19 03:39:18,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:39:18,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 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 415 [2023-12-19 03:39:18,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:39:18,551 INFO L225 Difference]: With dead ends: 85619 [2023-12-19 03:39:18,551 INFO L226 Difference]: Without dead ends: 44312 [2023-12-19 03:39:18,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:39:18,570 INFO L413 NwaCegarLoop]: 997 mSDtfsCounter, 761 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2086 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 2634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 2086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-19 03:39:18,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 1003 Invalid, 2634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 2086 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-19 03:39:18,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44312 states. [2023-12-19 03:39:18,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44312 to 42059. [2023-12-19 03:39:18,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42059 states, 42058 states have (on average 1.084502353892244) internal successors, (45612), 42058 states have internal predecessors, (45612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:18,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42059 states to 42059 states and 45612 transitions. [2023-12-19 03:39:18,994 INFO L78 Accepts]: Start accepts. Automaton has 42059 states and 45612 transitions. Word has length 415 [2023-12-19 03:39:18,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:39:18,996 INFO L495 AbstractCegarLoop]: Abstraction has 42059 states and 45612 transitions. [2023-12-19 03:39:18,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:18,996 INFO L276 IsEmpty]: Start isEmpty. Operand 42059 states and 45612 transitions. [2023-12-19 03:39:19,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2023-12-19 03:39:19,002 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:39:19,003 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:39:19,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 03:39:19,004 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:39:19,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:39:19,004 INFO L85 PathProgramCache]: Analyzing trace with hash 566162705, now seen corresponding path program 1 times [2023-12-19 03:39:19,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:39:19,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280632315] [2023-12-19 03:39:19,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:39:19,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:39:19,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:39:19,216 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 416 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-19 03:39:19,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:39:19,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280632315] [2023-12-19 03:39:19,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280632315] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:39:19,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:39:19,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:39:19,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264471963] [2023-12-19 03:39:19,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:39:19,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:39:19,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:39:19,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:39:19,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:39:19,218 INFO L87 Difference]: Start difference. First operand 42059 states and 45612 transitions. Second operand has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:22,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:39:22,064 INFO L93 Difference]: Finished difference Result 90876 states and 98447 transitions. [2023-12-19 03:39:22,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:39:22,065 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 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 429 [2023-12-19 03:39:22,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:39:22,120 INFO L225 Difference]: With dead ends: 90876 [2023-12-19 03:39:22,120 INFO L226 Difference]: Without dead ends: 49569 [2023-12-19 03:39:22,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:39:22,141 INFO L413 NwaCegarLoop]: 1216 mSDtfsCounter, 655 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2607 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 2912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 2607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-19 03:39:22,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [655 Valid, 1222 Invalid, 2912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 2607 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-19 03:39:22,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49569 states. [2023-12-19 03:39:22,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49569 to 47316. [2023-12-19 03:39:22,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47316 states, 47315 states have (on average 1.0783049772799325) internal successors, (51020), 47315 states have internal predecessors, (51020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:22,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47316 states to 47316 states and 51020 transitions. [2023-12-19 03:39:22,668 INFO L78 Accepts]: Start accepts. Automaton has 47316 states and 51020 transitions. Word has length 429 [2023-12-19 03:39:22,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:39:22,668 INFO L495 AbstractCegarLoop]: Abstraction has 47316 states and 51020 transitions. [2023-12-19 03:39:22,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:22,669 INFO L276 IsEmpty]: Start isEmpty. Operand 47316 states and 51020 transitions. [2023-12-19 03:39:22,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2023-12-19 03:39:22,674 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:39:22,675 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:39:22,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 03:39:22,675 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:39:22,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:39:22,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1365445797, now seen corresponding path program 1 times [2023-12-19 03:39:22,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:39:22,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132873608] [2023-12-19 03:39:22,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:39:22,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:39:22,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:39:23,170 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 118 proven. 257 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-12-19 03:39:23,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:39:23,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132873608] [2023-12-19 03:39:23,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132873608] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 03:39:23,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796142845] [2023-12-19 03:39:23,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:39:23,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:39:23,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 03:39:23,184 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 03:39:23,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 03:39:23,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:39:23,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 03:39:23,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 03:39:23,451 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 334 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 03:39:23,451 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 03:39:23,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796142845] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:39:23,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 03:39:23,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-19 03:39:23,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115598531] [2023-12-19 03:39:23,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:39:23,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:39:23,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:39:23,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:39:23,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 03:39:23,455 INFO L87 Difference]: Start difference. First operand 47316 states and 51020 transitions. Second operand has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:26,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:39:26,255 INFO L93 Difference]: Finished difference Result 126924 states and 137527 transitions. [2023-12-19 03:39:26,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:39:26,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 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 433 [2023-12-19 03:39:26,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:39:26,348 INFO L225 Difference]: With dead ends: 126924 [2023-12-19 03:39:26,348 INFO L226 Difference]: Without dead ends: 80360 [2023-12-19 03:39:26,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 03:39:26,390 INFO L413 NwaCegarLoop]: 1312 mSDtfsCounter, 611 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2356 mSolverCounterSat, 525 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 2881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 525 IncrementalHoareTripleChecker+Valid, 2356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-19 03:39:26,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 1319 Invalid, 2881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [525 Valid, 2356 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-19 03:39:26,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80360 states. [2023-12-19 03:39:27,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80360 to 69846. [2023-12-19 03:39:27,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69846 states, 69845 states have (on average 1.0663469110172525) internal successors, (74479), 69845 states have internal predecessors, (74479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:27,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69846 states to 69846 states and 74479 transitions. [2023-12-19 03:39:27,322 INFO L78 Accepts]: Start accepts. Automaton has 69846 states and 74479 transitions. Word has length 433 [2023-12-19 03:39:27,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:39:27,323 INFO L495 AbstractCegarLoop]: Abstraction has 69846 states and 74479 transitions. [2023-12-19 03:39:27,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:27,323 INFO L276 IsEmpty]: Start isEmpty. Operand 69846 states and 74479 transitions. [2023-12-19 03:39:27,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2023-12-19 03:39:27,331 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:39:27,331 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:39:27,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 03:39:27,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:39:27,537 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:39:27,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:39:27,537 INFO L85 PathProgramCache]: Analyzing trace with hash 327306605, now seen corresponding path program 1 times [2023-12-19 03:39:27,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:39:27,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931920526] [2023-12-19 03:39:27,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:39:27,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:39:27,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:39:27,971 INFO L134 CoverageAnalysis]: Checked inductivity of 739 backedges. 597 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2023-12-19 03:39:27,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:39:27,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931920526] [2023-12-19 03:39:27,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931920526] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:39:27,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:39:27,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:39:27,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458787493] [2023-12-19 03:39:27,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:39:27,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:39:27,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:39:27,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:39:27,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:39:27,973 INFO L87 Difference]: Start difference. First operand 69846 states and 74479 transitions. Second operand has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:30,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:39:30,448 INFO L93 Difference]: Finished difference Result 161470 states and 172771 transitions. [2023-12-19 03:39:30,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:39:30,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 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 501 [2023-12-19 03:39:30,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:39:30,684 INFO L225 Difference]: With dead ends: 161470 [2023-12-19 03:39:30,684 INFO L226 Difference]: Without dead ends: 92376 [2023-12-19 03:39:30,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:39:30,718 INFO L413 NwaCegarLoop]: 1268 mSDtfsCounter, 669 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2237 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 1275 SdHoareTripleChecker+Invalid, 2356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 2237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-19 03:39:30,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 1275 Invalid, 2356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 2237 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-19 03:39:30,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92376 states. [2023-12-19 03:39:31,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92376 to 90123. [2023-12-19 03:39:31,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90123 states, 90122 states have (on average 1.06269279421229) internal successors, (95772), 90122 states have internal predecessors, (95772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:31,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90123 states to 90123 states and 95772 transitions. [2023-12-19 03:39:31,604 INFO L78 Accepts]: Start accepts. Automaton has 90123 states and 95772 transitions. Word has length 501 [2023-12-19 03:39:31,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:39:31,604 INFO L495 AbstractCegarLoop]: Abstraction has 90123 states and 95772 transitions. [2023-12-19 03:39:31,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:31,605 INFO L276 IsEmpty]: Start isEmpty. Operand 90123 states and 95772 transitions. [2023-12-19 03:39:31,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2023-12-19 03:39:31,613 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:39:31,613 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:39:31,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 03:39:31,614 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:39:31,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:39:31,614 INFO L85 PathProgramCache]: Analyzing trace with hash -19417827, now seen corresponding path program 1 times [2023-12-19 03:39:31,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:39:31,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632792948] [2023-12-19 03:39:31,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:39:31,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:39:31,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:39:31,981 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2023-12-19 03:39:31,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:39:31,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632792948] [2023-12-19 03:39:31,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632792948] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:39:31,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:39:31,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:39:31,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934136511] [2023-12-19 03:39:31,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:39:31,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:39:31,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:39:31,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:39:31,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:39:31,983 INFO L87 Difference]: Start difference. First operand 90123 states and 95772 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:34,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:39:34,675 INFO L93 Difference]: Finished difference Result 195265 states and 207936 transitions. [2023-12-19 03:39:34,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:39:34,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 518 [2023-12-19 03:39:34,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:39:34,820 INFO L225 Difference]: With dead ends: 195265 [2023-12-19 03:39:34,820 INFO L226 Difference]: Without dead ends: 105894 [2023-12-19 03:39:34,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:39:34,858 INFO L413 NwaCegarLoop]: 1107 mSDtfsCounter, 846 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2199 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 2602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 2199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-19 03:39:34,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 1114 Invalid, 2602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 2199 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-19 03:39:34,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105894 states. [2023-12-19 03:39:35,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105894 to 104392. [2023-12-19 03:39:36,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104392 states, 104391 states have (on average 1.060723625599908) internal successors, (110730), 104391 states have internal predecessors, (110730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:36,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104392 states to 104392 states and 110730 transitions. [2023-12-19 03:39:36,135 INFO L78 Accepts]: Start accepts. Automaton has 104392 states and 110730 transitions. Word has length 518 [2023-12-19 03:39:36,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:39:36,135 INFO L495 AbstractCegarLoop]: Abstraction has 104392 states and 110730 transitions. [2023-12-19 03:39:36,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:36,136 INFO L276 IsEmpty]: Start isEmpty. Operand 104392 states and 110730 transitions. [2023-12-19 03:39:36,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 674 [2023-12-19 03:39:36,155 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:39:36,155 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2023-12-19 03:39:36,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 03:39:36,340 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:39:36,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:39:36,340 INFO L85 PathProgramCache]: Analyzing trace with hash -994381272, now seen corresponding path program 1 times [2023-12-19 03:39:36,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:39:36,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131983384] [2023-12-19 03:39:36,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:39:36,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:39:36,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:39:37,679 INFO L134 CoverageAnalysis]: Checked inductivity of 914 backedges. 888 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-19 03:39:37,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:39:37,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131983384] [2023-12-19 03:39:37,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131983384] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:39:37,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:39:37,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 03:39:37,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173387077] [2023-12-19 03:39:37,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:39:37,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 03:39:37,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:39:37,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 03:39:37,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-19 03:39:37,681 INFO L87 Difference]: Start difference. First operand 104392 states and 110730 transitions. Second operand has 6 states, 6 states have (on average 108.0) internal successors, (648), 5 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:43,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:39:43,458 INFO L93 Difference]: Finished difference Result 222391 states and 235806 transitions. [2023-12-19 03:39:43,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 03:39:43,459 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 108.0) internal successors, (648), 5 states have internal predecessors, (648), 0 states have call successors, (0), 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 673 [2023-12-19 03:39:43,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:39:43,633 INFO L225 Difference]: With dead ends: 222391 [2023-12-19 03:39:43,633 INFO L226 Difference]: Without dead ends: 118751 [2023-12-19 03:39:43,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-12-19 03:39:43,690 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 2523 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 7718 mSolverCounterSat, 796 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2523 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 8514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 796 IncrementalHoareTripleChecker+Valid, 7718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-12-19 03:39:43,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2523 Valid, 538 Invalid, 8514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [796 Valid, 7718 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-12-19 03:39:43,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118751 states. [2023-12-19 03:39:44,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118751 to 105894. [2023-12-19 03:39:44,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105894 states, 105893 states have (on average 1.060032296752382) internal successors, (112250), 105893 states have internal predecessors, (112250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:45,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105894 states to 105894 states and 112250 transitions. [2023-12-19 03:39:45,082 INFO L78 Accepts]: Start accepts. Automaton has 105894 states and 112250 transitions. Word has length 673 [2023-12-19 03:39:45,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:39:45,083 INFO L495 AbstractCegarLoop]: Abstraction has 105894 states and 112250 transitions. [2023-12-19 03:39:45,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 108.0) internal successors, (648), 5 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:45,083 INFO L276 IsEmpty]: Start isEmpty. Operand 105894 states and 112250 transitions. [2023-12-19 03:39:45,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 697 [2023-12-19 03:39:45,103 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:39:45,103 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:39:45,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 03:39:45,104 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:39:45,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:39:45,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1447068984, now seen corresponding path program 1 times [2023-12-19 03:39:45,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:39:45,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254408948] [2023-12-19 03:39:45,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:39:45,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:39:45,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:39:46,025 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 818 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2023-12-19 03:39:46,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:39:46,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254408948] [2023-12-19 03:39:46,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254408948] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:39:46,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:39:46,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:39:46,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464018213] [2023-12-19 03:39:46,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:39:46,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:39:46,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:39:46,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:39:46,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:39:46,028 INFO L87 Difference]: Start difference. First operand 105894 states and 112250 transitions. Second operand has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:48,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:39:48,741 INFO L93 Difference]: Finished difference Result 221550 states and 235024 transitions. [2023-12-19 03:39:48,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:39:48,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 696 [2023-12-19 03:39:48,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:39:48,883 INFO L225 Difference]: With dead ends: 221550 [2023-12-19 03:39:48,883 INFO L226 Difference]: Without dead ends: 116408 [2023-12-19 03:39:48,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:39:48,951 INFO L413 NwaCegarLoop]: 1352 mSDtfsCounter, 583 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2213 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 1359 SdHoareTripleChecker+Invalid, 2442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 2213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-19 03:39:48,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 1359 Invalid, 2442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 2213 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-19 03:39:49,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116408 states. [2023-12-19 03:39:50,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116408 to 115657. [2023-12-19 03:39:50,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115657 states, 115656 states have (on average 1.0591668395932765) internal successors, (122499), 115656 states have internal predecessors, (122499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:50,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115657 states to 115657 states and 122499 transitions. [2023-12-19 03:39:50,617 INFO L78 Accepts]: Start accepts. Automaton has 115657 states and 122499 transitions. Word has length 696 [2023-12-19 03:39:50,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:39:50,618 INFO L495 AbstractCegarLoop]: Abstraction has 115657 states and 122499 transitions. [2023-12-19 03:39:50,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:50,618 INFO L276 IsEmpty]: Start isEmpty. Operand 115657 states and 122499 transitions. [2023-12-19 03:39:50,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2023-12-19 03:39:50,636 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:39:50,636 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:39:50,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 03:39:50,636 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:39:50,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:39:50,637 INFO L85 PathProgramCache]: Analyzing trace with hash 338442052, now seen corresponding path program 1 times [2023-12-19 03:39:50,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:39:50,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723625990] [2023-12-19 03:39:50,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:39:50,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:39:50,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:39:51,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1146 backedges. 720 proven. 0 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2023-12-19 03:39:51,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:39:51,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723625990] [2023-12-19 03:39:51,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723625990] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:39:51,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:39:51,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:39:51,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611140183] [2023-12-19 03:39:51,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:39:51,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:39:51,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:39:51,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:39:51,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:39:51,132 INFO L87 Difference]: Start difference. First operand 115657 states and 122499 transitions. Second operand has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:54,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:39:54,286 INFO L93 Difference]: Finished difference Result 280879 states and 298462 transitions. [2023-12-19 03:39:54,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:39:54,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 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 729 [2023-12-19 03:39:54,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:39:54,658 INFO L225 Difference]: With dead ends: 280879 [2023-12-19 03:39:54,658 INFO L226 Difference]: Without dead ends: 165974 [2023-12-19 03:39:54,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:39:54,688 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 731 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2278 mSolverCounterSat, 641 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 2919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 641 IncrementalHoareTripleChecker+Valid, 2278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 03:39:54,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 424 Invalid, 2919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [641 Valid, 2278 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 03:39:54,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165974 states. [2023-12-19 03:39:56,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165974 to 161468. [2023-12-19 03:39:56,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161468 states, 161467 states have (on average 1.0568475292164963) internal successors, (170646), 161467 states have internal predecessors, (170646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:56,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161468 states to 161468 states and 170646 transitions. [2023-12-19 03:39:56,733 INFO L78 Accepts]: Start accepts. Automaton has 161468 states and 170646 transitions. Word has length 729 [2023-12-19 03:39:56,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:39:56,733 INFO L495 AbstractCegarLoop]: Abstraction has 161468 states and 170646 transitions. [2023-12-19 03:39:56,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:56,734 INFO L276 IsEmpty]: Start isEmpty. Operand 161468 states and 170646 transitions. [2023-12-19 03:39:56,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 772 [2023-12-19 03:39:56,757 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:39:56,757 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 03:39:56,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 03:39:56,758 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:39:56,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:39:56,758 INFO L85 PathProgramCache]: Analyzing trace with hash -2033479141, now seen corresponding path program 1 times [2023-12-19 03:39:56,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:39:56,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910945957] [2023-12-19 03:39:56,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:39:56,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:39:56,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:39:57,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1336 backedges. 1013 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2023-12-19 03:39:57,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:39:57,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910945957] [2023-12-19 03:39:57,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910945957] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:39:57,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:39:57,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:39:57,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896134302] [2023-12-19 03:39:57,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:39:57,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:39:57,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:39:57,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:39:57,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:39:57,230 INFO L87 Difference]: Start difference. First operand 161468 states and 170646 transitions. Second operand has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:40:00,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:40:00,239 INFO L93 Difference]: Finished difference Result 324437 states and 342803 transitions. [2023-12-19 03:40:00,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:40:00,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 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 771 [2023-12-19 03:40:00,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:40:00,474 INFO L225 Difference]: With dead ends: 324437 [2023-12-19 03:40:00,474 INFO L226 Difference]: Without dead ends: 163721 [2023-12-19 03:40:00,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:40:00,547 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 760 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2231 mSolverCounterSat, 435 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 2666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 435 IncrementalHoareTripleChecker+Valid, 2231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-19 03:40:00,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [760 Valid, 218 Invalid, 2666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [435 Valid, 2231 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-19 03:40:00,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163721 states. [2023-12-19 03:40:02,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163721 to 150203. [2023-12-19 03:40:02,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150203 states, 150202 states have (on average 1.047769004407398) internal successors, (157377), 150202 states have internal predecessors, (157377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:40:02,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150203 states to 150203 states and 157377 transitions. [2023-12-19 03:40:02,731 INFO L78 Accepts]: Start accepts. Automaton has 150203 states and 157377 transitions. Word has length 771 [2023-12-19 03:40:02,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:40:02,731 INFO L495 AbstractCegarLoop]: Abstraction has 150203 states and 157377 transitions. [2023-12-19 03:40:02,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:40:02,731 INFO L276 IsEmpty]: Start isEmpty. Operand 150203 states and 157377 transitions. [2023-12-19 03:40:02,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 809 [2023-12-19 03:40:02,783 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:40:02,783 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 03:40:02,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 03:40:02,783 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:40:02,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:40:02,784 INFO L85 PathProgramCache]: Analyzing trace with hash 174483228, now seen corresponding path program 1 times [2023-12-19 03:40:02,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:40:02,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794937303] [2023-12-19 03:40:02,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:40:02,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:40:02,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:40:03,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1468 backedges. 1068 proven. 0 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2023-12-19 03:40:03,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:40:03,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794937303] [2023-12-19 03:40:03,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794937303] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:40:03,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:40:03,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:40:03,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697117708] [2023-12-19 03:40:03,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:40:03,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:40:03,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:40:03,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:40:03,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:40:03,474 INFO L87 Difference]: Start difference. First operand 150203 states and 157377 transitions. Second operand has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:40:06,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:40:06,465 INFO L93 Difference]: Finished difference Result 309417 states and 324094 transitions. [2023-12-19 03:40:06,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:40:06,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 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 808 [2023-12-19 03:40:06,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:40:06,685 INFO L225 Difference]: With dead ends: 309417 [2023-12-19 03:40:06,685 INFO L226 Difference]: Without dead ends: 159966 [2023-12-19 03:40:06,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:40:06,764 INFO L413 NwaCegarLoop]: 1297 mSDtfsCounter, 583 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2475 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 2619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 2475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-19 03:40:06,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 1303 Invalid, 2619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 2475 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-19 03:40:06,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159966 states. [2023-12-19 03:40:08,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159966 to 158464. [2023-12-19 03:40:08,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158464 states, 158463 states have (on average 1.046149574348586) internal successors, (165776), 158463 states have internal predecessors, (165776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:40:09,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158464 states to 158464 states and 165776 transitions. [2023-12-19 03:40:09,120 INFO L78 Accepts]: Start accepts. Automaton has 158464 states and 165776 transitions. Word has length 808 [2023-12-19 03:40:09,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:40:09,121 INFO L495 AbstractCegarLoop]: Abstraction has 158464 states and 165776 transitions. [2023-12-19 03:40:09,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:40:09,121 INFO L276 IsEmpty]: Start isEmpty. Operand 158464 states and 165776 transitions. [2023-12-19 03:40:09,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 914 [2023-12-19 03:40:09,191 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:40:09,191 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:40:09,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 03:40:09,191 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:40:09,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:40:09,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1375619285, now seen corresponding path program 1 times [2023-12-19 03:40:09,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:40:09,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237188458] [2023-12-19 03:40:09,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:40:09,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:40:09,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:40:09,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2126 backedges. 1432 proven. 0 refuted. 0 times theorem prover too weak. 694 trivial. 0 not checked. [2023-12-19 03:40:09,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:40:09,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237188458] [2023-12-19 03:40:09,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237188458] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:40:09,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:40:09,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:40:09,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824142677] [2023-12-19 03:40:09,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:40:09,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:40:09,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:40:09,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:40:09,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:40:09,647 INFO L87 Difference]: Start difference. First operand 158464 states and 165776 transitions. Second operand has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:40:12,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:40:12,288 INFO L93 Difference]: Finished difference Result 335702 states and 351345 transitions. [2023-12-19 03:40:12,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:40:12,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 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 913 [2023-12-19 03:40:12,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:40:12,716 INFO L225 Difference]: With dead ends: 335702 [2023-12-19 03:40:12,716 INFO L226 Difference]: Without dead ends: 174235 [2023-12-19 03:40:12,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:40:12,738 INFO L413 NwaCegarLoop]: 1357 mSDtfsCounter, 711 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1988 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 2374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 1988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-19 03:40:12,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 1363 Invalid, 2374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 1988 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-19 03:40:12,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174235 states. [2023-12-19 03:40:14,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174235 to 167476. [2023-12-19 03:40:14,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167476 states, 167475 states have (on average 1.0381012091356918) internal successors, (173856), 167475 states have internal predecessors, (173856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:40:14,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167476 states to 167476 states and 173856 transitions. [2023-12-19 03:40:14,845 INFO L78 Accepts]: Start accepts. Automaton has 167476 states and 173856 transitions. Word has length 913 [2023-12-19 03:40:14,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:40:14,845 INFO L495 AbstractCegarLoop]: Abstraction has 167476 states and 173856 transitions. [2023-12-19 03:40:14,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:40:14,846 INFO L276 IsEmpty]: Start isEmpty. Operand 167476 states and 173856 transitions. [2023-12-19 03:40:14,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 921 [2023-12-19 03:40:14,878 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:40:14,879 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:40:14,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 03:40:14,879 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:40:14,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:40:14,880 INFO L85 PathProgramCache]: Analyzing trace with hash 274886284, now seen corresponding path program 1 times [2023-12-19 03:40:14,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:40:14,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142790830] [2023-12-19 03:40:14,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:40:14,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:40:14,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:40:15,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1690 backedges. 803 proven. 0 refuted. 0 times theorem prover too weak. 887 trivial. 0 not checked. [2023-12-19 03:40:15,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:40:15,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142790830] [2023-12-19 03:40:15,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142790830] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:40:15,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:40:15,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:40:15,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302624986] [2023-12-19 03:40:15,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:40:15,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:40:15,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:40:15,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:40:15,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:40:15,875 INFO L87 Difference]: Start difference. First operand 167476 states and 173856 transitions. Second operand has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:40:18,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:40:18,737 INFO L93 Difference]: Finished difference Result 334200 states and 346955 transitions. [2023-12-19 03:40:18,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:40:18,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 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 920 [2023-12-19 03:40:18,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:40:18,962 INFO L225 Difference]: With dead ends: 334200 [2023-12-19 03:40:18,962 INFO L226 Difference]: Without dead ends: 167476 [2023-12-19 03:40:19,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:40:19,039 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 655 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2237 mSolverCounterSat, 345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 2582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 2237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-19 03:40:19,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [655 Valid, 88 Invalid, 2582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [345 Valid, 2237 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-19 03:40:19,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167476 states. [2023-12-19 03:40:20,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167476 to 165974. [2023-12-19 03:40:20,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165974 states, 165973 states have (on average 1.0351683707590993) internal successors, (171810), 165973 states have internal predecessors, (171810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:40:21,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165974 states to 165974 states and 171810 transitions. [2023-12-19 03:40:21,052 INFO L78 Accepts]: Start accepts. Automaton has 165974 states and 171810 transitions. Word has length 920 [2023-12-19 03:40:21,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:40:21,053 INFO L495 AbstractCegarLoop]: Abstraction has 165974 states and 171810 transitions. [2023-12-19 03:40:21,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:40:21,053 INFO L276 IsEmpty]: Start isEmpty. Operand 165974 states and 171810 transitions. [2023-12-19 03:40:21,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 927 [2023-12-19 03:40:21,085 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:40:21,086 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-19 03:40:21,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 03:40:21,086 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:40:21,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:40:21,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1106307806, now seen corresponding path program 1 times [2023-12-19 03:40:21,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:40:21,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621790010] [2023-12-19 03:40:21,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:40:21,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:40:21,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:40:21,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2014 backedges. 1330 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-19 03:40:21,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:40:21,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621790010] [2023-12-19 03:40:21,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621790010] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:40:21,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:40:21,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:40:21,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135695804] [2023-12-19 03:40:21,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:40:21,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:40:21,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:40:21,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:40:21,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:40:21,910 INFO L87 Difference]: Start difference. First operand 165974 states and 171810 transitions. Second operand has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:40:24,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:40:24,917 INFO L93 Difference]: Finished difference Result 313923 states and 323814 transitions. [2023-12-19 03:40:24,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:40:24,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 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 926 [2023-12-19 03:40:24,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:40:25,271 INFO L225 Difference]: With dead ends: 313923 [2023-12-19 03:40:25,272 INFO L226 Difference]: Without dead ends: 147950 [2023-12-19 03:40:25,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:40:25,293 INFO L413 NwaCegarLoop]: 1171 mSDtfsCounter, 591 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2116 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 2512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 2116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-19 03:40:25,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [591 Valid, 1178 Invalid, 2512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 2116 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-19 03:40:25,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147950 states. [2023-12-19 03:40:26,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147950 to 128424. [2023-12-19 03:40:26,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128424 states, 128423 states have (on average 1.0235393971484859) internal successors, (131446), 128423 states have internal predecessors, (131446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:40:26,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128424 states to 128424 states and 131446 transitions. [2023-12-19 03:40:26,818 INFO L78 Accepts]: Start accepts. Automaton has 128424 states and 131446 transitions. Word has length 926 [2023-12-19 03:40:26,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:40:26,818 INFO L495 AbstractCegarLoop]: Abstraction has 128424 states and 131446 transitions. [2023-12-19 03:40:26,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:40:26,819 INFO L276 IsEmpty]: Start isEmpty. Operand 128424 states and 131446 transitions. [2023-12-19 03:40:26,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 939 [2023-12-19 03:40:26,854 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:40:26,854 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 03:40:26,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 03:40:26,855 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:40:26,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:40:26,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1662683977, now seen corresponding path program 1 times [2023-12-19 03:40:26,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:40:26,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742354473] [2023-12-19 03:40:26,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:40:26,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:40:26,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:40:27,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1649 backedges. 1212 proven. 0 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2023-12-19 03:40:27,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:40:27,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742354473] [2023-12-19 03:40:27,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742354473] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:40:27,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:40:27,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:40:27,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297975427] [2023-12-19 03:40:27,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:40:27,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:40:27,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:40:27,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:40:27,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:40:27,760 INFO L87 Difference]: Start difference. First operand 128424 states and 131446 transitions. Second operand has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:40:30,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:40:30,445 INFO L93 Difference]: Finished difference Result 256096 states and 262135 transitions. [2023-12-19 03:40:30,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:40:30,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 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 938 [2023-12-19 03:40:30,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:40:30,611 INFO L225 Difference]: With dead ends: 256096 [2023-12-19 03:40:30,612 INFO L226 Difference]: Without dead ends: 128424 [2023-12-19 03:40:30,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:40:30,682 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 708 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1926 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 2346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 1926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-19 03:40:30,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [708 Valid, 121 Invalid, 2346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [420 Valid, 1926 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-19 03:40:30,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128424 states. [2023-12-19 03:40:31,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128424 to 123167. [2023-12-19 03:40:32,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123167 states, 123166 states have (on average 1.0203140477079713) internal successors, (125668), 123166 states have internal predecessors, (125668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:40:32,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123167 states to 123167 states and 125668 transitions. [2023-12-19 03:40:32,356 INFO L78 Accepts]: Start accepts. Automaton has 123167 states and 125668 transitions. Word has length 938 [2023-12-19 03:40:32,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:40:32,356 INFO L495 AbstractCegarLoop]: Abstraction has 123167 states and 125668 transitions. [2023-12-19 03:40:32,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:40:32,356 INFO L276 IsEmpty]: Start isEmpty. Operand 123167 states and 125668 transitions. [2023-12-19 03:40:32,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1008 [2023-12-19 03:40:32,390 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:40:32,391 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:40:32,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 03:40:32,391 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:40:32,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:40:32,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1564222690, now seen corresponding path program 1 times [2023-12-19 03:40:32,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:40:32,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711769039] [2023-12-19 03:40:32,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:40:32,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:40:32,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:40:33,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1506 backedges. 1106 proven. 0 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2023-12-19 03:40:33,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:40:33,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711769039] [2023-12-19 03:40:33,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711769039] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:40:33,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:40:33,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:40:33,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689685313] [2023-12-19 03:40:33,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:40:33,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:40:33,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:40:33,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:40:33,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:40:33,054 INFO L87 Difference]: Start difference. First operand 123167 states and 125668 transitions. Second operand has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:40:36,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:40:36,245 INFO L93 Difference]: Finished difference Result 265108 states and 270657 transitions. [2023-12-19 03:40:36,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:40:36,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 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 1007 [2023-12-19 03:40:36,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:40:36,596 INFO L225 Difference]: With dead ends: 265108 [2023-12-19 03:40:36,597 INFO L226 Difference]: Without dead ends: 142693 [2023-12-19 03:40:36,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:40:36,688 INFO L413 NwaCegarLoop]: 1112 mSDtfsCounter, 418 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2193 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 1119 SdHoareTripleChecker+Invalid, 2495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 2193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-19 03:40:36,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 1119 Invalid, 2495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 2193 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-19 03:40:36,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142693 states. [2023-12-19 03:40:38,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142693 to 139689. [2023-12-19 03:40:38,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139689 states, 139688 states have (on average 1.019887177137621) internal successors, (142466), 139688 states have internal predecessors, (142466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:40:38,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139689 states to 139689 states and 142466 transitions. [2023-12-19 03:40:38,289 INFO L78 Accepts]: Start accepts. Automaton has 139689 states and 142466 transitions. Word has length 1007 [2023-12-19 03:40:38,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:40:38,290 INFO L495 AbstractCegarLoop]: Abstraction has 139689 states and 142466 transitions. [2023-12-19 03:40:38,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:40:38,290 INFO L276 IsEmpty]: Start isEmpty. Operand 139689 states and 142466 transitions. [2023-12-19 03:40:38,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1010 [2023-12-19 03:40:38,347 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:40:38,347 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:40:38,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-19 03:40:38,347 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:40:38,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:40:38,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1722300227, now seen corresponding path program 1 times [2023-12-19 03:40:38,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:40:38,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345213166] [2023-12-19 03:40:38,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:40:38,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:40:38,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:40:39,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 716 proven. 54 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2023-12-19 03:40:39,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:40:39,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345213166] [2023-12-19 03:40:39,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345213166] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 03:40:39,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444550172] [2023-12-19 03:40:39,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:40:39,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:40:39,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 03:40:39,668 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 03:40:39,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 03:40:39,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:40:39,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 1169 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 03:40:39,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 03:40:41,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 716 proven. 54 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2023-12-19 03:40:41,068 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 03:40:43,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 627 proven. 143 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2023-12-19 03:40:43,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444550172] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 03:40:43,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 03:40:43,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-12-19 03:40:43,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133484508] [2023-12-19 03:40:43,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 03:40:43,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 03:40:43,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:40:43,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 03:40:43,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-12-19 03:40:43,419 INFO L87 Difference]: Start difference. First operand 139689 states and 142466 transitions. Second operand has 11 states, 11 states have (on average 122.9090909090909) internal successors, (1352), 10 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:40:55,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:40:55,845 INFO L93 Difference]: Finished difference Result 300405 states and 306394 transitions. [2023-12-19 03:40:55,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 03:40:55,845 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 122.9090909090909) internal successors, (1352), 10 states have internal predecessors, (1352), 0 states have call successors, (0), 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 1009 [2023-12-19 03:40:55,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:40:56,059 INFO L225 Difference]: With dead ends: 300405 [2023-12-19 03:40:56,059 INFO L226 Difference]: Without dead ends: 157713 [2023-12-19 03:40:56,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2032 GetRequests, 2011 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=175, Invalid=331, Unknown=0, NotChecked=0, Total=506 [2023-12-19 03:40:56,109 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 15722 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 16815 mSolverCounterSat, 2173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15722 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 18988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2173 IncrementalHoareTripleChecker+Valid, 16815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2023-12-19 03:40:56,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15722 Valid, 126 Invalid, 18988 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2173 Valid, 16815 Invalid, 0 Unknown, 0 Unchecked, 10.9s Time] [2023-12-19 03:40:56,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157713 states. [2023-12-19 03:40:57,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157713 to 141191. [2023-12-19 03:40:57,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141191 states, 141190 states have (on average 1.0170054536440258) internal successors, (143591), 141190 states have internal predecessors, (143591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:40:57,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141191 states to 141191 states and 143591 transitions. [2023-12-19 03:40:57,787 INFO L78 Accepts]: Start accepts. Automaton has 141191 states and 143591 transitions. Word has length 1009 [2023-12-19 03:40:57,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:40:57,787 INFO L495 AbstractCegarLoop]: Abstraction has 141191 states and 143591 transitions. [2023-12-19 03:40:57,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 122.9090909090909) internal successors, (1352), 10 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:40:57,788 INFO L276 IsEmpty]: Start isEmpty. Operand 141191 states and 143591 transitions. [2023-12-19 03:40:58,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1092 [2023-12-19 03:40:58,234 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:40:58,234 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:40:58,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 03:40:58,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-19 03:40:58,435 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:40:58,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:40:58,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1863217788, now seen corresponding path program 1 times [2023-12-19 03:40:58,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:40:58,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394411693] [2023-12-19 03:40:58,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:40:58,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:40:58,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:40:59,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1634 backedges. 1337 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-12-19 03:40:59,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:40:59,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394411693] [2023-12-19 03:40:59,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394411693] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:40:59,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:40:59,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:40:59,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55765253] [2023-12-19 03:40:59,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:40:59,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:40:59,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:40:59,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:40:59,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:40:59,111 INFO L87 Difference]: Start difference. First operand 141191 states and 143591 transitions. Second operand has 3 states, 3 states have (on average 274.3333333333333) internal successors, (823), 3 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:41:02,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:41:02,060 INFO L93 Difference]: Finished difference Result 302658 states and 307963 transitions. [2023-12-19 03:41:02,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:41:02,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 274.3333333333333) internal successors, (823), 3 states have internal predecessors, (823), 0 states have call successors, (0), 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 1091 [2023-12-19 03:41:02,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:41:02,251 INFO L225 Difference]: With dead ends: 302658 [2023-12-19 03:41:02,251 INFO L226 Difference]: Without dead ends: 161468 [2023-12-19 03:41:02,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:41:02,329 INFO L413 NwaCegarLoop]: 1070 mSDtfsCounter, 437 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2103 mSolverCounterSat, 417 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 2520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 417 IncrementalHoareTripleChecker+Valid, 2103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-19 03:41:02,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 1077 Invalid, 2520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [417 Valid, 2103 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-19 03:41:02,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161468 states. [2023-12-19 03:41:04,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161468 to 140440. [2023-12-19 03:41:04,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140440 states, 140439 states have (on average 1.015978467519706) internal successors, (142683), 140439 states have internal predecessors, (142683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:41:04,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140440 states to 140440 states and 142683 transitions. [2023-12-19 03:41:04,265 INFO L78 Accepts]: Start accepts. Automaton has 140440 states and 142683 transitions. Word has length 1091 [2023-12-19 03:41:04,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:41:04,266 INFO L495 AbstractCegarLoop]: Abstraction has 140440 states and 142683 transitions. [2023-12-19 03:41:04,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 274.3333333333333) internal successors, (823), 3 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:41:04,266 INFO L276 IsEmpty]: Start isEmpty. Operand 140440 states and 142683 transitions. [2023-12-19 03:41:04,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1135 [2023-12-19 03:41:04,322 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:41:04,322 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:41:04,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-19 03:41:04,323 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:41:04,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:41:04,323 INFO L85 PathProgramCache]: Analyzing trace with hash -187714841, now seen corresponding path program 1 times [2023-12-19 03:41:04,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:41:04,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804953335] [2023-12-19 03:41:04,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:41:04,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:41:04,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:41:05,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1441 backedges. 1108 proven. 0 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2023-12-19 03:41:05,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:41:05,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804953335] [2023-12-19 03:41:05,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804953335] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:41:05,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:41:05,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:41:05,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992166395] [2023-12-19 03:41:05,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:41:05,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:41:05,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:41:05,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:41:05,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:41:05,868 INFO L87 Difference]: Start difference. First operand 140440 states and 142683 transitions. Second operand has 3 states, 3 states have (on average 276.6666666666667) internal successors, (830), 3 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:41:08,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:41:08,552 INFO L93 Difference]: Finished difference Result 294397 states and 299124 transitions. [2023-12-19 03:41:08,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:41:08,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 276.6666666666667) internal successors, (830), 3 states have internal predecessors, (830), 0 states have call successors, (0), 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 1134 [2023-12-19 03:41:08,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:41:08,723 INFO L225 Difference]: With dead ends: 294397 [2023-12-19 03:41:08,723 INFO L226 Difference]: Without dead ends: 154709 [2023-12-19 03:41:08,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:41:08,770 INFO L413 NwaCegarLoop]: 1213 mSDtfsCounter, 637 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2109 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 2285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 2109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-19 03:41:08,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 1220 Invalid, 2285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 2109 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-19 03:41:08,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154709 states. [2023-12-19 03:41:10,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154709 to 145697. [2023-12-19 03:41:10,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145697 states, 145696 states have (on average 1.015093070502965) internal successors, (147895), 145696 states have internal predecessors, (147895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:41:10,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145697 states to 145697 states and 147895 transitions. [2023-12-19 03:41:10,744 INFO L78 Accepts]: Start accepts. Automaton has 145697 states and 147895 transitions. Word has length 1134 [2023-12-19 03:41:10,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:41:10,745 INFO L495 AbstractCegarLoop]: Abstraction has 145697 states and 147895 transitions. [2023-12-19 03:41:10,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 276.6666666666667) internal successors, (830), 3 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:41:10,745 INFO L276 IsEmpty]: Start isEmpty. Operand 145697 states and 147895 transitions. [2023-12-19 03:41:10,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1388 [2023-12-19 03:41:10,827 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:41:10,828 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:41:10,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-19 03:41:10,828 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:41:10,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:41:10,830 INFO L85 PathProgramCache]: Analyzing trace with hash 2048395711, now seen corresponding path program 1 times [2023-12-19 03:41:10,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:41:10,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860933012] [2023-12-19 03:41:10,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:41:10,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:41:10,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:41:11,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1685 backedges. 1322 proven. 0 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2023-12-19 03:41:11,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:41:11,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860933012] [2023-12-19 03:41:11,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860933012] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:41:11,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:41:11,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:41:11,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481431140] [2023-12-19 03:41:11,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:41:11,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:41:11,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:41:11,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:41:11,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:41:11,931 INFO L87 Difference]: Start difference. First operand 145697 states and 147895 transitions. Second operand has 3 states, 3 states have (on average 375.0) internal successors, (1125), 3 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:41:14,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:41:14,919 INFO L93 Difference]: Finished difference Result 307915 states and 312542 transitions. [2023-12-19 03:41:14,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:41:14,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 375.0) internal successors, (1125), 3 states have internal predecessors, (1125), 0 states have call successors, (0), 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 1387 [2023-12-19 03:41:14,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:41:15,145 INFO L225 Difference]: With dead ends: 307915 [2023-12-19 03:41:15,146 INFO L226 Difference]: Without dead ends: 162970 [2023-12-19 03:41:15,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:41:15,216 INFO L413 NwaCegarLoop]: 1057 mSDtfsCounter, 577 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2127 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 1064 SdHoareTripleChecker+Invalid, 2525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 2127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-19 03:41:15,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 1064 Invalid, 2525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 2127 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-19 03:41:15,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162970 states. [2023-12-19 03:41:16,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162970 to 152456. [2023-12-19 03:41:17,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152456 states, 152455 states have (on average 1.0144370469974746) internal successors, (154656), 152455 states have internal predecessors, (154656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:41:17,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152456 states to 152456 states and 154656 transitions. [2023-12-19 03:41:17,250 INFO L78 Accepts]: Start accepts. Automaton has 152456 states and 154656 transitions. Word has length 1387 [2023-12-19 03:41:17,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:41:17,251 INFO L495 AbstractCegarLoop]: Abstraction has 152456 states and 154656 transitions. [2023-12-19 03:41:17,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 375.0) internal successors, (1125), 3 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:41:17,251 INFO L276 IsEmpty]: Start isEmpty. Operand 152456 states and 154656 transitions. [2023-12-19 03:41:17,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1537 [2023-12-19 03:41:17,384 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:41:17,386 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:41:17,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-19 03:41:17,386 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:41:17,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:41:17,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1357523625, now seen corresponding path program 1 times [2023-12-19 03:41:17,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:41:17,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621071473] [2023-12-19 03:41:17,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:41:17,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:41:17,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:41:18,752 INFO L134 CoverageAnalysis]: Checked inductivity of 3146 backedges. 1948 proven. 0 refuted. 0 times theorem prover too weak. 1198 trivial. 0 not checked. [2023-12-19 03:41:18,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:41:18,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621071473] [2023-12-19 03:41:18,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621071473] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:41:18,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:41:18,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:41:18,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771688125] [2023-12-19 03:41:18,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:41:18,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:41:18,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:41:18,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:41:18,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:41:18,759 INFO L87 Difference]: Start difference. First operand 152456 states and 154656 transitions. Second operand has 3 states, 3 states have (on average 296.6666666666667) internal successors, (890), 3 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:41:21,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:41:21,428 INFO L93 Difference]: Finished difference Result 317678 states and 322323 transitions. [2023-12-19 03:41:21,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:41:21,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 296.6666666666667) internal successors, (890), 3 states have internal predecessors, (890), 0 states have call successors, (0), 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 1536 [2023-12-19 03:41:21,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:41:21,637 INFO L225 Difference]: With dead ends: 317678 [2023-12-19 03:41:21,638 INFO L226 Difference]: Without dead ends: 165974 [2023-12-19 03:41:21,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:41:21,724 INFO L413 NwaCegarLoop]: 1185 mSDtfsCounter, 594 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2108 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 2267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 2108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-19 03:41:21,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [594 Valid, 1191 Invalid, 2267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 2108 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-19 03:41:22,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165974 states. [2023-12-19 03:41:23,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165974 to 158464. [2023-12-19 03:41:23,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158464 states, 158463 states have (on average 1.0137823971526476) internal successors, (160647), 158463 states have internal predecessors, (160647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:41:23,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158464 states to 158464 states and 160647 transitions. [2023-12-19 03:41:23,711 INFO L78 Accepts]: Start accepts. Automaton has 158464 states and 160647 transitions. Word has length 1536 [2023-12-19 03:41:23,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:41:23,712 INFO L495 AbstractCegarLoop]: Abstraction has 158464 states and 160647 transitions. [2023-12-19 03:41:23,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 296.6666666666667) internal successors, (890), 3 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:41:23,712 INFO L276 IsEmpty]: Start isEmpty. Operand 158464 states and 160647 transitions. [2023-12-19 03:41:24,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1603 [2023-12-19 03:41:24,208 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:41:24,216 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:41:24,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-19 03:41:24,217 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:41:24,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:41:24,217 INFO L85 PathProgramCache]: Analyzing trace with hash 287831223, now seen corresponding path program 1 times [2023-12-19 03:41:24,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:41:24,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003392302] [2023-12-19 03:41:24,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:41:24,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:41:24,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat