/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 02:20:41,606 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 02:20:41,683 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 02:20:41,689 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 02:20:41,690 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 02:20:41,710 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 02:20:41,710 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 02:20:41,710 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 02:20:41,711 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 02:20:41,714 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 02:20:41,714 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 02:20:41,715 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 02:20:41,715 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 02:20:41,716 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 02:20:41,716 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 02:20:41,716 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 02:20:41,717 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 02:20:41,717 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 02:20:41,717 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 02:20:41,717 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 02:20:41,717 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 02:20:41,718 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 02:20:41,718 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 02:20:41,718 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 02:20:41,718 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 02:20:41,718 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 02:20:41,718 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 02:20:41,719 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 02:20:41,719 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 02:20:41,719 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 02:20:41,720 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 02:20:41,720 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 02:20:41,720 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 02:20:41,720 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 02:20:41,720 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 02:20:41,721 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 02:20:41,721 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 02:20:41,721 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 02:20:41,721 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 02:20:41,721 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 02:20:41,721 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 02:20:41,721 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 02:20:41,721 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 02:20:41,721 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 02:20:41,919 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 02:20:41,945 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 02:20:41,947 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 02:20:41,947 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 02:20:41,948 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 02:20:41,949 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label50.c [2023-12-16 02:20:43,444 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 02:20:43,867 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 02:20:43,867 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label50.c [2023-12-16 02:20:43,881 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d7b6a46c/28d8e1a722264971a0a06d997ab9d2aa/FLAGb2877e41e [2023-12-16 02:20:43,891 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d7b6a46c/28d8e1a722264971a0a06d997ab9d2aa [2023-12-16 02:20:43,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 02:20:43,894 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 02:20:43,895 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 02:20:43,895 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 02:20:43,898 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 02:20:43,899 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:20:43" (1/1) ... [2023-12-16 02:20:43,900 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47493392 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:20:43, skipping insertion in model container [2023-12-16 02:20:43,900 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:20:43" (1/1) ... [2023-12-16 02:20:43,985 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 02:20:44,167 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/Problem18_label50.c[6561,6574] [2023-12-16 02:20:44,665 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 02:20:44,676 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 02:20:44,694 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/Problem18_label50.c[6561,6574] [2023-12-16 02:20:44,887 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 02:20:44,902 INFO L206 MainTranslator]: Completed translation [2023-12-16 02:20:44,902 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:20:44 WrapperNode [2023-12-16 02:20:44,902 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 02:20:44,904 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 02:20:44,904 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 02:20:44,904 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 02:20:44,908 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:20:44" (1/1) ... [2023-12-16 02:20:44,942 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:20:44" (1/1) ... [2023-12-16 02:20:45,143 INFO L138 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 4135 [2023-12-16 02:20:45,144 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 02:20:45,145 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 02:20:45,146 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 02:20:45,146 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 02:20:45,153 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:20:44" (1/1) ... [2023-12-16 02:20:45,153 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:20:44" (1/1) ... [2023-12-16 02:20:45,181 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:20:44" (1/1) ... [2023-12-16 02:20:45,309 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 02:20:45,309 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:20:44" (1/1) ... [2023-12-16 02:20:45,309 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:20:44" (1/1) ... [2023-12-16 02:20:45,409 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:20:44" (1/1) ... [2023-12-16 02:20:45,431 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:20:44" (1/1) ... [2023-12-16 02:20:45,456 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:20:44" (1/1) ... [2023-12-16 02:20:45,475 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:20:44" (1/1) ... [2023-12-16 02:20:45,510 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 02:20:45,511 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 02:20:45,512 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 02:20:45,512 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 02:20:45,512 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:20:44" (1/1) ... [2023-12-16 02:20:45,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 02:20:45,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:20:45,560 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 02:20:45,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 02:20:45,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 02:20:45,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 02:20:45,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 02:20:45,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 02:20:45,658 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 02:20:45,660 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 02:20:48,406 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 02:20:48,475 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 02:20:48,475 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 02:20:48,476 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:20:48 BoogieIcfgContainer [2023-12-16 02:20:48,476 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 02:20:48,477 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 02:20:48,477 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 02:20:48,479 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 02:20:48,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:20:43" (1/3) ... [2023-12-16 02:20:48,480 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@476f99a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:20:48, skipping insertion in model container [2023-12-16 02:20:48,480 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:20:44" (2/3) ... [2023-12-16 02:20:48,480 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@476f99a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:20:48, skipping insertion in model container [2023-12-16 02:20:48,480 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:20:48" (3/3) ... [2023-12-16 02:20:48,481 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label50.c [2023-12-16 02:20:48,492 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 02:20:48,493 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 02:20:48,546 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 02:20:48,550 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;@386ebdd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 02:20:48,550 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 02:20:48,555 INFO L276 IsEmpty]: Start isEmpty. Operand has 695 states, 693 states have (on average 1.9942279942279941) internal successors, (1382), 694 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:20:48,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-16 02:20:48,560 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:20:48,560 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:20:48,561 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:20:48,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:20:48,564 INFO L85 PathProgramCache]: Analyzing trace with hash 2026844555, now seen corresponding path program 1 times [2023-12-16 02:20:48,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:20:48,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839067057] [2023-12-16 02:20:48,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:20:48,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:20:48,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:20:48,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:20:48,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:20:48,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839067057] [2023-12-16 02:20:48,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839067057] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:20:48,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:20:48,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:20:48,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574840016] [2023-12-16 02:20:48,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:20:48,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 02:20:48,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:20:48,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 02:20:48,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 02:20:48,853 INFO L87 Difference]: Start difference. First operand has 695 states, 693 states have (on average 1.9942279942279941) internal successors, (1382), 694 states have internal predecessors, (1382), 0 states have call successors, (0), 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 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:20:48,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:20:48,928 INFO L93 Difference]: Finished difference Result 1389 states and 2763 transitions. [2023-12-16 02:20:48,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 02:20:48,938 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2023-12-16 02:20:48,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:20:48,949 INFO L225 Difference]: With dead ends: 1389 [2023-12-16 02:20:48,949 INFO L226 Difference]: Without dead ends: 693 [2023-12-16 02:20:48,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 02:20:48,955 INFO L413 NwaCegarLoop]: 1317 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, 1317 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:20:48,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1317 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 02:20:48,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2023-12-16 02:20:49,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 693. [2023-12-16 02:20:49,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 692 states have (on average 1.903179190751445) internal successors, (1317), 692 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:20:49,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1317 transitions. [2023-12-16 02:20:49,007 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1317 transitions. Word has length 62 [2023-12-16 02:20:49,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:20:49,008 INFO L495 AbstractCegarLoop]: Abstraction has 693 states and 1317 transitions. [2023-12-16 02:20:49,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:20:49,008 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1317 transitions. [2023-12-16 02:20:49,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-16 02:20:49,009 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:20:49,009 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:20:49,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 02:20:49,009 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:20:49,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:20:49,010 INFO L85 PathProgramCache]: Analyzing trace with hash 145395702, now seen corresponding path program 1 times [2023-12-16 02:20:49,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:20:49,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012597075] [2023-12-16 02:20:49,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:20:49,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:20:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:20:49,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:20:49,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:20:49,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012597075] [2023-12-16 02:20:49,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012597075] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:20:49,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:20:49,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:20:49,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238184193] [2023-12-16 02:20:49,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:20:49,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:20:49,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:20:49,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:20:49,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:20:49,184 INFO L87 Difference]: Start difference. First operand 693 states and 1317 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:20:52,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:20:52,390 INFO L93 Difference]: Finished difference Result 2075 states and 3948 transitions. [2023-12-16 02:20:52,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:20:52,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2023-12-16 02:20:52,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:20:52,400 INFO L225 Difference]: With dead ends: 2075 [2023-12-16 02:20:52,401 INFO L226 Difference]: Without dead ends: 1383 [2023-12-16 02:20:52,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:20:52,403 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 713 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1994 mSolverCounterSat, 673 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 2667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 673 IncrementalHoareTripleChecker+Valid, 1994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-16 02:20:52,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 435 Invalid, 2667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [673 Valid, 1994 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-16 02:20:52,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2023-12-16 02:20:52,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 1383. [2023-12-16 02:20:52,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1383 states, 1382 states have (on average 1.5998552821997105) internal successors, (2211), 1382 states have internal predecessors, (2211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:20:52,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 2211 transitions. [2023-12-16 02:20:52,524 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 2211 transitions. Word has length 62 [2023-12-16 02:20:52,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:20:52,524 INFO L495 AbstractCegarLoop]: Abstraction has 1383 states and 2211 transitions. [2023-12-16 02:20:52,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:20:52,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 2211 transitions. [2023-12-16 02:20:52,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-16 02:20:52,527 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:20:52,528 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:20:52,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 02:20:52,528 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:20:52,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:20:52,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1645545117, now seen corresponding path program 1 times [2023-12-16 02:20:52,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:20:52,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806219156] [2023-12-16 02:20:52,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:20:52,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:20:52,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:20:52,842 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:20:52,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:20:52,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806219156] [2023-12-16 02:20:52,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806219156] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:20:52,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:20:52,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:20:52,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720315157] [2023-12-16 02:20:52,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:20:52,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:20:52,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:20:52,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:20:52,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:20:52,844 INFO L87 Difference]: Start difference. First operand 1383 states and 2211 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:20:55,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:20:55,851 INFO L93 Difference]: Finished difference Result 4145 states and 6630 transitions. [2023-12-16 02:20:55,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:20:55,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2023-12-16 02:20:55,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:20:55,870 INFO L225 Difference]: With dead ends: 4145 [2023-12-16 02:20:55,870 INFO L226 Difference]: Without dead ends: 2763 [2023-12-16 02:20:55,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:20:55,876 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 714 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1702 mSolverCounterSat, 918 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 2620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 918 IncrementalHoareTripleChecker+Valid, 1702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-16 02:20:55,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 527 Invalid, 2620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [918 Valid, 1702 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-16 02:20:55,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2763 states. [2023-12-16 02:20:55,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2763 to 2763. [2023-12-16 02:20:55,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2762 states have (on average 1.3504706734250542) internal successors, (3730), 2762 states have internal predecessors, (3730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:20:55,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 3730 transitions. [2023-12-16 02:20:55,923 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 3730 transitions. Word has length 127 [2023-12-16 02:20:55,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:20:55,923 INFO L495 AbstractCegarLoop]: Abstraction has 2763 states and 3730 transitions. [2023-12-16 02:20:55,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:20:55,924 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 3730 transitions. [2023-12-16 02:20:55,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2023-12-16 02:20:55,927 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:20:55,927 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-16 02:20:55,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 02:20:55,927 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:20:55,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:20:55,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1034400987, now seen corresponding path program 1 times [2023-12-16 02:20:55,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:20:55,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510275772] [2023-12-16 02:20:55,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:20:55,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:20:55,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:20:56,473 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-16 02:20:56,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:20:56,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510275772] [2023-12-16 02:20:56,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510275772] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:20:56,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:20:56,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:20:56,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055748390] [2023-12-16 02:20:56,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:20:56,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 02:20:56,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:20:56,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 02:20:56,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 02:20:56,477 INFO L87 Difference]: Start difference. First operand 2763 states and 3730 transitions. Second operand has 4 states, 4 states have (on average 46.25) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:21:00,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:21:00,649 INFO L93 Difference]: Finished difference Result 6905 states and 9073 transitions. [2023-12-16 02:21:00,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 02:21:00,650 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 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 245 [2023-12-16 02:21:00,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:21:00,673 INFO L225 Difference]: With dead ends: 6905 [2023-12-16 02:21:00,673 INFO L226 Difference]: Without dead ends: 4143 [2023-12-16 02:21:00,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 02:21:00,684 INFO L413 NwaCegarLoop]: 621 mSDtfsCounter, 1873 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4085 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1873 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 4275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 4085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-16 02:21:00,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1873 Valid, 638 Invalid, 4275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 4085 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-12-16 02:21:00,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4143 states. [2023-12-16 02:21:00,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4143 to 4143. [2023-12-16 02:21:00,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4143 states, 4142 states have (on average 1.2467407049734427) internal successors, (5164), 4142 states have internal predecessors, (5164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:21:00,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4143 states to 4143 states and 5164 transitions. [2023-12-16 02:21:00,782 INFO L78 Accepts]: Start accepts. Automaton has 4143 states and 5164 transitions. Word has length 245 [2023-12-16 02:21:00,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:21:00,797 INFO L495 AbstractCegarLoop]: Abstraction has 4143 states and 5164 transitions. [2023-12-16 02:21:00,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:21:00,797 INFO L276 IsEmpty]: Start isEmpty. Operand 4143 states and 5164 transitions. [2023-12-16 02:21:00,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2023-12-16 02:21:00,801 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:21:00,801 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:21:00,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 02:21:00,801 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:21:00,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:21:00,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1347632679, now seen corresponding path program 1 times [2023-12-16 02:21:00,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:21:00,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388508827] [2023-12-16 02:21:00,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:21:00,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:21:00,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:21:01,033 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:21:01,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:21:01,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388508827] [2023-12-16 02:21:01,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388508827] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:21:01,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:21:01,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:21:01,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848164119] [2023-12-16 02:21:01,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:21:01,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:21:01,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:21:01,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:21:01,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:21:01,036 INFO L87 Difference]: Start difference. First operand 4143 states and 5164 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) [2023-12-16 02:21:03,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:21:03,196 INFO L93 Difference]: Finished difference Result 11735 states and 14757 transitions. [2023-12-16 02:21:03,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:21:03,197 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 361 [2023-12-16 02:21:03,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:21:03,238 INFO L225 Difference]: With dead ends: 11735 [2023-12-16 02:21:03,238 INFO L226 Difference]: Without dead ends: 7593 [2023-12-16 02:21:03,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:21:03,247 INFO L413 NwaCegarLoop]: 815 mSDtfsCounter, 643 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2346 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 2792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 2346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-16 02:21:03,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 821 Invalid, 2792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 2346 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-16 02:21:03,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7593 states. [2023-12-16 02:21:03,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7593 to 7593. [2023-12-16 02:21:03,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7593 states, 7592 states have (on average 1.2413066385669125) internal successors, (9424), 7592 states have internal predecessors, (9424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:21:03,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7593 states to 7593 states and 9424 transitions. [2023-12-16 02:21:03,408 INFO L78 Accepts]: Start accepts. Automaton has 7593 states and 9424 transitions. Word has length 361 [2023-12-16 02:21:03,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:21:03,411 INFO L495 AbstractCegarLoop]: Abstraction has 7593 states and 9424 transitions. [2023-12-16 02:21:03,411 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) [2023-12-16 02:21:03,412 INFO L276 IsEmpty]: Start isEmpty. Operand 7593 states and 9424 transitions. [2023-12-16 02:21:03,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2023-12-16 02:21:03,415 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:21:03,416 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:21:03,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 02:21:03,416 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:21:03,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:21:03,417 INFO L85 PathProgramCache]: Analyzing trace with hash -104323326, now seen corresponding path program 1 times [2023-12-16 02:21:03,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:21:03,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440877848] [2023-12-16 02:21:03,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:21:03,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:21:03,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:21:03,781 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-16 02:21:03,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:21:03,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440877848] [2023-12-16 02:21:03,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440877848] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 02:21:03,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123303883] [2023-12-16 02:21:03,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:21:03,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:21:03,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:21:03,793 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:21:03,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 02:21:03,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:21:03,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 02:21:04,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:21:04,377 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-16 02:21:04,377 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:21:04,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123303883] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:21:04,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 02:21:04,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-12-16 02:21:04,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651971646] [2023-12-16 02:21:04,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:21:04,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:21:04,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:21:04,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:21:04,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 02:21:04,380 INFO L87 Difference]: Start difference. First operand 7593 states and 9424 transitions. Second operand has 3 states, 3 states have (on average 103.0) internal successors, (309), 2 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:21:06,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:21:06,640 INFO L93 Difference]: Finished difference Result 20015 states and 25443 transitions. [2023-12-16 02:21:06,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:21:06,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 2 states have internal predecessors, (309), 0 states have call successors, (0), 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 368 [2023-12-16 02:21:06,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:21:06,681 INFO L225 Difference]: With dead ends: 20015 [2023-12-16 02:21:06,681 INFO L226 Difference]: Without dead ends: 13113 [2023-12-16 02:21:06,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 367 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 02:21:06,687 INFO L413 NwaCegarLoop]: 542 mSDtfsCounter, 391 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2332 mSolverCounterSat, 457 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 2789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 457 IncrementalHoareTripleChecker+Valid, 2332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-16 02:21:06,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 548 Invalid, 2789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [457 Valid, 2332 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-16 02:21:06,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13113 states. [2023-12-16 02:21:06,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13113 to 11043. [2023-12-16 02:21:06,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11043 states, 11042 states have (on average 1.2370947292157217) internal successors, (13660), 11042 states have internal predecessors, (13660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:21:06,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11043 states to 11043 states and 13660 transitions. [2023-12-16 02:21:06,881 INFO L78 Accepts]: Start accepts. Automaton has 11043 states and 13660 transitions. Word has length 368 [2023-12-16 02:21:06,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:21:06,882 INFO L495 AbstractCegarLoop]: Abstraction has 11043 states and 13660 transitions. [2023-12-16 02:21:06,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 2 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:21:06,883 INFO L276 IsEmpty]: Start isEmpty. Operand 11043 states and 13660 transitions. [2023-12-16 02:21:06,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2023-12-16 02:21:06,887 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:21:06,888 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 02:21:06,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-16 02:21:07,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-16 02:21:07,095 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:21:07,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:21:07,095 INFO L85 PathProgramCache]: Analyzing trace with hash 455467538, now seen corresponding path program 1 times [2023-12-16 02:21:07,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:21:07,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763878267] [2023-12-16 02:21:07,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:21:07,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:21:07,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:21:07,737 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 213 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:21:07,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:21:07,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763878267] [2023-12-16 02:21:07,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763878267] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:21:07,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:21:07,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:21:07,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238612457] [2023-12-16 02:21:07,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:21:07,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:21:07,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:21:07,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:21:07,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:21:07,739 INFO L87 Difference]: Start difference. First operand 11043 states and 13660 transitions. Second operand has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:21:10,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:21:10,368 INFO L93 Difference]: Finished difference Result 26915 states and 33307 transitions. [2023-12-16 02:21:10,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:21:10,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 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 454 [2023-12-16 02:21:10,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:21:10,408 INFO L225 Difference]: With dead ends: 26915 [2023-12-16 02:21:10,409 INFO L226 Difference]: Without dead ends: 16563 [2023-12-16 02:21:10,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:21:10,418 INFO L413 NwaCegarLoop]: 1068 mSDtfsCounter, 600 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2202 mSolverCounterSat, 354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 2556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 2202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-16 02:21:10,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [600 Valid, 1074 Invalid, 2556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [354 Valid, 2202 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-16 02:21:10,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16563 states. [2023-12-16 02:21:10,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16563 to 15873. [2023-12-16 02:21:10,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15873 states, 15872 states have (on average 1.200100806451613) internal successors, (19048), 15872 states have internal predecessors, (19048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:21:10,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15873 states to 15873 states and 19048 transitions. [2023-12-16 02:21:10,608 INFO L78 Accepts]: Start accepts. Automaton has 15873 states and 19048 transitions. Word has length 454 [2023-12-16 02:21:10,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:21:10,609 INFO L495 AbstractCegarLoop]: Abstraction has 15873 states and 19048 transitions. [2023-12-16 02:21:10,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:21:10,609 INFO L276 IsEmpty]: Start isEmpty. Operand 15873 states and 19048 transitions. [2023-12-16 02:21:10,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2023-12-16 02:21:10,614 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:21:10,615 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 02:21:10,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 02:21:10,616 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:21:10,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:21:10,617 INFO L85 PathProgramCache]: Analyzing trace with hash -850558931, now seen corresponding path program 1 times [2023-12-16 02:21:10,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:21:10,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574897713] [2023-12-16 02:21:10,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:21:10,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:21:10,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:21:11,541 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 121 proven. 96 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 02:21:11,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:21:11,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574897713] [2023-12-16 02:21:11,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574897713] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 02:21:11,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918467085] [2023-12-16 02:21:11,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:21:11,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:21:11,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:21:11,548 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:21:11,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 02:21:11,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:21:11,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 02:21:11,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:21:12,098 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-12-16 02:21:12,099 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:21:12,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918467085] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:21:12,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 02:21:12,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-12-16 02:21:12,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506516748] [2023-12-16 02:21:12,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:21:12,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:21:12,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:21:12,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:21:12,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 02:21:12,101 INFO L87 Difference]: Start difference. First operand 15873 states and 19048 transitions. Second operand has 3 states, 3 states have (on average 121.0) internal successors, (363), 2 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:21:14,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:21:14,274 INFO L93 Difference]: Finished difference Result 38645 states and 46039 transitions. [2023-12-16 02:21:14,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:21:14,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 2 states have internal predecessors, (363), 0 states have call successors, (0), 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 459 [2023-12-16 02:21:14,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:21:14,341 INFO L225 Difference]: With dead ends: 38645 [2023-12-16 02:21:14,341 INFO L226 Difference]: Without dead ends: 23463 [2023-12-16 02:21:14,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 458 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 02:21:14,383 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 499 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1935 mSolverCounterSat, 746 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 2681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 746 IncrementalHoareTripleChecker+Valid, 1935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:21:14,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 107 Invalid, 2681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [746 Valid, 1935 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-16 02:21:14,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23463 states. [2023-12-16 02:21:14,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23463 to 22083. [2023-12-16 02:21:14,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22083 states, 22082 states have (on average 1.1544244180780727) internal successors, (25492), 22082 states have internal predecessors, (25492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:21:14,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22083 states to 22083 states and 25492 transitions. [2023-12-16 02:21:14,898 INFO L78 Accepts]: Start accepts. Automaton has 22083 states and 25492 transitions. Word has length 459 [2023-12-16 02:21:14,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:21:14,899 INFO L495 AbstractCegarLoop]: Abstraction has 22083 states and 25492 transitions. [2023-12-16 02:21:14,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 2 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:21:14,899 INFO L276 IsEmpty]: Start isEmpty. Operand 22083 states and 25492 transitions. [2023-12-16 02:21:14,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2023-12-16 02:21:14,905 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:21:14,905 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 02:21:14,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-16 02:21:15,110 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,SelfDestructingSolverStorable7 [2023-12-16 02:21:15,111 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:21:15,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:21:15,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1583751959, now seen corresponding path program 1 times [2023-12-16 02:21:15,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:21:15,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128531704] [2023-12-16 02:21:15,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:21:15,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:21:15,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:21:15,400 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-12-16 02:21:15,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:21:15,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128531704] [2023-12-16 02:21:15,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128531704] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:21:15,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:21:15,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:21:15,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314541914] [2023-12-16 02:21:15,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:21:15,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:21:15,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:21:15,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:21:15,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:21:15,402 INFO L87 Difference]: Start difference. First operand 22083 states and 25492 transitions. Second operand has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:21:18,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:21:18,188 INFO L93 Difference]: Finished difference Result 48305 states and 56235 transitions. [2023-12-16 02:21:18,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:21:18,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 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 461 [2023-12-16 02:21:18,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:21:18,238 INFO L225 Difference]: With dead ends: 48305 [2023-12-16 02:21:18,238 INFO L226 Difference]: Without dead ends: 26913 [2023-12-16 02:21:18,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:21:18,260 INFO L413 NwaCegarLoop]: 1302 mSDtfsCounter, 634 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1964 mSolverCounterSat, 755 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 2719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 755 IncrementalHoareTripleChecker+Valid, 1964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-16 02:21:18,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [634 Valid, 1308 Invalid, 2719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [755 Valid, 1964 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-16 02:21:18,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26913 states. [2023-12-16 02:21:18,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26913 to 25533. [2023-12-16 02:21:18,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25533 states, 25532 states have (on average 1.142957856807144) internal successors, (29182), 25532 states have internal predecessors, (29182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:21:18,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25533 states to 25533 states and 29182 transitions. [2023-12-16 02:21:18,679 INFO L78 Accepts]: Start accepts. Automaton has 25533 states and 29182 transitions. Word has length 461 [2023-12-16 02:21:18,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:21:18,681 INFO L495 AbstractCegarLoop]: Abstraction has 25533 states and 29182 transitions. [2023-12-16 02:21:18,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:21:18,681 INFO L276 IsEmpty]: Start isEmpty. Operand 25533 states and 29182 transitions. [2023-12-16 02:21:18,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2023-12-16 02:21:18,687 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:21:18,689 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:21:18,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 02:21:18,689 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:21:18,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:21:18,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1653763356, now seen corresponding path program 1 times [2023-12-16 02:21:18,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:21:18,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248694526] [2023-12-16 02:21:18,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:21:18,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:21:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:21:18,925 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2023-12-16 02:21:18,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:21:18,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248694526] [2023-12-16 02:21:18,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248694526] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:21:18,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:21:18,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:21:18,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432881739] [2023-12-16 02:21:18,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:21:18,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:21:18,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:21:18,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:21:18,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:21:18,927 INFO L87 Difference]: Start difference. First operand 25533 states and 29182 transitions. Second operand has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:21:21,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:21:21,410 INFO L93 Difference]: Finished difference Result 57965 states and 67203 transitions. [2023-12-16 02:21:21,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:21:21,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 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 551 [2023-12-16 02:21:21,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:21:21,467 INFO L225 Difference]: With dead ends: 57965 [2023-12-16 02:21:21,468 INFO L226 Difference]: Without dead ends: 29673 [2023-12-16 02:21:21,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:21:21,478 INFO L413 NwaCegarLoop]: 1309 mSDtfsCounter, 631 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2147 mSolverCounterSat, 473 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 1315 SdHoareTripleChecker+Invalid, 2620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 473 IncrementalHoareTripleChecker+Valid, 2147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-16 02:21:21,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 1315 Invalid, 2620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [473 Valid, 2147 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-16 02:21:21,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29673 states. [2023-12-16 02:21:21,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29673 to 29673. [2023-12-16 02:21:21,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29673 states, 29672 states have (on average 1.1363912105688865) internal successors, (33719), 29672 states have internal predecessors, (33719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:21:21,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29673 states to 29673 states and 33719 transitions. [2023-12-16 02:21:21,748 INFO L78 Accepts]: Start accepts. Automaton has 29673 states and 33719 transitions. Word has length 551 [2023-12-16 02:21:21,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:21:21,749 INFO L495 AbstractCegarLoop]: Abstraction has 29673 states and 33719 transitions. [2023-12-16 02:21:21,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:21:21,749 INFO L276 IsEmpty]: Start isEmpty. Operand 29673 states and 33719 transitions. [2023-12-16 02:21:21,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2023-12-16 02:21:21,757 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:21:21,757 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2023-12-16 02:21:21,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 02:21:21,757 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:21:21,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:21:21,758 INFO L85 PathProgramCache]: Analyzing trace with hash -532404134, now seen corresponding path program 1 times [2023-12-16 02:21:21,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:21:21,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609116468] [2023-12-16 02:21:21,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:21:21,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:21:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:21:22,037 INFO L134 CoverageAnalysis]: Checked inductivity of 824 backedges. 538 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2023-12-16 02:21:22,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:21:22,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609116468] [2023-12-16 02:21:22,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609116468] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:21:22,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:21:22,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:21:22,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750206427] [2023-12-16 02:21:22,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:21:22,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 02:21:22,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:21:22,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 02:21:22,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 02:21:22,039 INFO L87 Difference]: Start difference. First operand 29673 states and 33719 transitions. Second operand has 4 states, 4 states have (on average 94.5) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:21:24,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:21:24,307 INFO L93 Difference]: Finished difference Result 60778 states and 68894 transitions. [2023-12-16 02:21:24,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 02:21:24,307 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 94.5) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 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 572 [2023-12-16 02:21:24,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:21:24,341 INFO L225 Difference]: With dead ends: 60778 [2023-12-16 02:21:24,341 INFO L226 Difference]: Without dead ends: 31743 [2023-12-16 02:21:24,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 02:21:24,361 INFO L413 NwaCegarLoop]: 612 mSDtfsCounter, 529 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2580 mSolverCounterSat, 380 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 2960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 380 IncrementalHoareTripleChecker+Valid, 2580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-16 02:21:24,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 623 Invalid, 2960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [380 Valid, 2580 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-16 02:21:24,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31743 states. [2023-12-16 02:21:24,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31743 to 31743. [2023-12-16 02:21:24,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31743 states, 31742 states have (on average 1.0960872030747906) internal successors, (34792), 31742 states have internal predecessors, (34792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:21:24,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31743 states to 31743 states and 34792 transitions. [2023-12-16 02:21:24,666 INFO L78 Accepts]: Start accepts. Automaton has 31743 states and 34792 transitions. Word has length 572 [2023-12-16 02:21:24,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:21:24,666 INFO L495 AbstractCegarLoop]: Abstraction has 31743 states and 34792 transitions. [2023-12-16 02:21:24,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.5) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:21:24,666 INFO L276 IsEmpty]: Start isEmpty. Operand 31743 states and 34792 transitions. [2023-12-16 02:21:24,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 628 [2023-12-16 02:21:24,674 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:21:24,674 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:21:24,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 02:21:24,674 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:21:24,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:21:24,675 INFO L85 PathProgramCache]: Analyzing trace with hash 531316759, now seen corresponding path program 1 times [2023-12-16 02:21:24,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:21:24,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684534990] [2023-12-16 02:21:24,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:21:24,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:21:24,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:21:25,979 INFO L134 CoverageAnalysis]: Checked inductivity of 557 backedges. 494 proven. 2 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-16 02:21:25,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:21:25,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684534990] [2023-12-16 02:21:25,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684534990] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 02:21:25,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725341528] [2023-12-16 02:21:25,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:21:25,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:21:25,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:21:25,997 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:21:25,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 02:21:26,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:21:26,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 02:21:26,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:21:26,218 INFO L134 CoverageAnalysis]: Checked inductivity of 557 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2023-12-16 02:21:26,218 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:21:26,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725341528] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:21:26,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 02:21:26,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-12-16 02:21:26,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649904593] [2023-12-16 02:21:26,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:21:26,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:21:26,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:21:26,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:21:26,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-16 02:21:26,220 INFO L87 Difference]: Start difference. First operand 31743 states and 34792 transitions. Second operand has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:21:28,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:21:28,821 INFO L93 Difference]: Finished difference Result 75215 states and 83113 transitions. [2023-12-16 02:21:28,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:21:28,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 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 627 [2023-12-16 02:21:28,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:21:28,882 INFO L225 Difference]: With dead ends: 75215 [2023-12-16 02:21:28,883 INFO L226 Difference]: Without dead ends: 44163 [2023-12-16 02:21:28,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 632 GetRequests, 626 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-16 02:21:28,930 INFO L413 NwaCegarLoop]: 1112 mSDtfsCounter, 633 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2041 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 2344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 2041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-16 02:21:28,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 1118 Invalid, 2344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 2041 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-16 02:21:28,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44163 states. [2023-12-16 02:21:29,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44163 to 42093. [2023-12-16 02:21:29,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42093 states, 42092 states have (on average 1.0897557730685166) internal successors, (45870), 42092 states have internal predecessors, (45870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:21:29,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42093 states to 42093 states and 45870 transitions. [2023-12-16 02:21:29,414 INFO L78 Accepts]: Start accepts. Automaton has 42093 states and 45870 transitions. Word has length 627 [2023-12-16 02:21:29,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:21:29,415 INFO L495 AbstractCegarLoop]: Abstraction has 42093 states and 45870 transitions. [2023-12-16 02:21:29,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:21:29,415 INFO L276 IsEmpty]: Start isEmpty. Operand 42093 states and 45870 transitions. [2023-12-16 02:21:29,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2023-12-16 02:21:29,423 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:21:29,424 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:21:29,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 02:21:29,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:21:29,629 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:21:29,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:21:29,630 INFO L85 PathProgramCache]: Analyzing trace with hash 373023791, now seen corresponding path program 1 times [2023-12-16 02:21:29,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:21:29,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260609566] [2023-12-16 02:21:29,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:21:29,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:21:29,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:21:29,881 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2023-12-16 02:21:29,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:21:29,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260609566] [2023-12-16 02:21:29,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260609566] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:21:29,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:21:29,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:21:29,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985481081] [2023-12-16 02:21:29,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:21:29,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:21:29,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:21:29,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:21:29,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:21:29,885 INFO L87 Difference]: Start difference. First operand 42093 states and 45870 transitions. Second operand has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:21:32,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:21:32,174 INFO L93 Difference]: Finished difference Result 95915 states and 105227 transitions. [2023-12-16 02:21:32,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:21:32,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 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 632 [2023-12-16 02:21:32,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:21:32,232 INFO L225 Difference]: With dead ends: 95915 [2023-12-16 02:21:32,232 INFO L226 Difference]: Without dead ends: 49683 [2023-12-16 02:21:32,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:21:32,275 INFO L413 NwaCegarLoop]: 1051 mSDtfsCounter, 659 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1677 mSolverCounterSat, 512 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 2189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 512 IncrementalHoareTripleChecker+Valid, 1677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-16 02:21:32,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [659 Valid, 1057 Invalid, 2189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [512 Valid, 1677 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-16 02:21:32,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49683 states. [2023-12-16 02:21:32,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49683 to 47613. [2023-12-16 02:21:32,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47613 states, 47612 states have (on average 1.0497563639418634) internal successors, (49981), 47612 states have internal predecessors, (49981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:21:33,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47613 states to 47613 states and 49981 transitions. [2023-12-16 02:21:33,018 INFO L78 Accepts]: Start accepts. Automaton has 47613 states and 49981 transitions. Word has length 632 [2023-12-16 02:21:33,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:21:33,019 INFO L495 AbstractCegarLoop]: Abstraction has 47613 states and 49981 transitions. [2023-12-16 02:21:33,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:21:33,019 INFO L276 IsEmpty]: Start isEmpty. Operand 47613 states and 49981 transitions. [2023-12-16 02:21:33,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2023-12-16 02:21:33,031 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:21:33,031 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:21:33,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 02:21:33,032 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:21:33,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:21:33,032 INFO L85 PathProgramCache]: Analyzing trace with hash 890110540, now seen corresponding path program 1 times [2023-12-16 02:21:33,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:21:33,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502449530] [2023-12-16 02:21:33,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:21:33,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:21:33,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:21:33,908 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2023-12-16 02:21:33,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:21:33,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502449530] [2023-12-16 02:21:33,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502449530] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:21:33,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:21:33,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:21:33,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348277620] [2023-12-16 02:21:33,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:21:33,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:21:33,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:21:33,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:21:33,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:21:33,910 INFO L87 Difference]: Start difference. First operand 47613 states and 49981 transitions. Second operand has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:21:35,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:21:35,466 INFO L93 Difference]: Finished difference Result 94535 states and 99268 transitions. [2023-12-16 02:21:35,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:21:35,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 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 695 [2023-12-16 02:21:35,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:21:35,519 INFO L225 Difference]: With dead ends: 94535 [2023-12-16 02:21:35,520 INFO L226 Difference]: Without dead ends: 47613 [2023-12-16 02:21:35,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:21:35,545 INFO L413 NwaCegarLoop]: 737 mSDtfsCounter, 734 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1675 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 1832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-16 02:21:35,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 743 Invalid, 1832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1675 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-16 02:21:35,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47613 states. [2023-12-16 02:21:36,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47613 to 47613. [2023-12-16 02:21:36,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47613 states, 47612 states have (on average 1.0444845837183903) internal successors, (49730), 47612 states have internal predecessors, (49730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:21:36,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47613 states to 47613 states and 49730 transitions. [2023-12-16 02:21:36,306 INFO L78 Accepts]: Start accepts. Automaton has 47613 states and 49730 transitions. Word has length 695 [2023-12-16 02:21:36,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:21:36,307 INFO L495 AbstractCegarLoop]: Abstraction has 47613 states and 49730 transitions. [2023-12-16 02:21:36,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:21:36,307 INFO L276 IsEmpty]: Start isEmpty. Operand 47613 states and 49730 transitions. [2023-12-16 02:21:36,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1080 [2023-12-16 02:21:36,350 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:21:36,351 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 02:21:36,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 02:21:36,352 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:21:36,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:21:36,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1962769643, now seen corresponding path program 1 times [2023-12-16 02:21:36,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:21:36,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943990672] [2023-12-16 02:21:36,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:21:36,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:21:36,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:21:37,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1293 backedges. 875 proven. 0 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2023-12-16 02:21:37,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:21:37,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943990672] [2023-12-16 02:21:37,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943990672] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:21:37,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:21:37,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:21:37,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488238029] [2023-12-16 02:21:37,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:21:37,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:21:37,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:21:37,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:21:37,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:21:37,138 INFO L87 Difference]: Start difference. First operand 47613 states and 49730 transitions. Second operand has 3 states, 3 states have (on average 249.33333333333334) internal successors, (748), 3 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:21:39,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:21:39,221 INFO L93 Difference]: Finished difference Result 96605 states and 100880 transitions. [2023-12-16 02:21:39,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:21:39,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 249.33333333333334) internal successors, (748), 3 states have internal predecessors, (748), 0 states have call successors, (0), 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 1079 [2023-12-16 02:21:39,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:21:39,276 INFO L225 Difference]: With dead ends: 96605 [2023-12-16 02:21:39,276 INFO L226 Difference]: Without dead ends: 49683 [2023-12-16 02:21:39,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:21:39,297 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 313 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1784 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 1973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 1784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-16 02:21:39,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 260 Invalid, 1973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 1784 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-16 02:21:39,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49683 states. [2023-12-16 02:21:39,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49683 to 49683. [2023-12-16 02:21:39,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49683 states, 49682 states have (on average 1.0352038967835433) internal successors, (51431), 49682 states have internal predecessors, (51431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:21:39,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49683 states to 49683 states and 51431 transitions. [2023-12-16 02:21:39,896 INFO L78 Accepts]: Start accepts. Automaton has 49683 states and 51431 transitions. Word has length 1079 [2023-12-16 02:21:39,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:21:39,897 INFO L495 AbstractCegarLoop]: Abstraction has 49683 states and 51431 transitions. [2023-12-16 02:21:39,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 249.33333333333334) internal successors, (748), 3 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:21:39,897 INFO L276 IsEmpty]: Start isEmpty. Operand 49683 states and 51431 transitions. [2023-12-16 02:21:40,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1717 [2023-12-16 02:21:40,125 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:21:40,126 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 02:21:40,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 02:21:40,126 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:21:40,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:21:40,161 INFO L85 PathProgramCache]: Analyzing trace with hash -715319277, now seen corresponding path program 1 times [2023-12-16 02:21:40,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:21:40,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474150430] [2023-12-16 02:21:40,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:21:40,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:21:40,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:21:42,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2736 backedges. 1953 proven. 330 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2023-12-16 02:21:42,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:21:42,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474150430] [2023-12-16 02:21:42,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474150430] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 02:21:42,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742489916] [2023-12-16 02:21:42,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:21:42,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:21:42,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:21:42,940 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:21:42,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 02:21:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:21:43,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 1913 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 02:21:43,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:21:43,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2736 backedges. 2134 proven. 0 refuted. 0 times theorem prover too weak. 602 trivial. 0 not checked. [2023-12-16 02:21:43,981 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:21:43,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742489916] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:21:43,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 02:21:43,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-16 02:21:43,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34788838] [2023-12-16 02:21:43,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:21:43,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:21:43,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:21:43,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:21:43,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-16 02:21:43,985 INFO L87 Difference]: Start difference. First operand 49683 states and 51431 transitions. Second operand has 3 states, 3 states have (on average 411.3333333333333) internal successors, (1234), 3 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:21:45,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:21:45,843 INFO L93 Difference]: Finished difference Result 115235 states and 119735 transitions. [2023-12-16 02:21:45,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:21:45,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 411.3333333333333) internal successors, (1234), 3 states have internal predecessors, (1234), 0 states have call successors, (0), 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 1716 [2023-12-16 02:21:45,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:21:45,922 INFO L225 Difference]: With dead ends: 115235 [2023-12-16 02:21:45,922 INFO L226 Difference]: Without dead ends: 66243 [2023-12-16 02:21:45,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1722 GetRequests, 1715 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-16 02:21:45,940 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 408 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1724 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 1941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 1724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-16 02:21:45,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 140 Invalid, 1941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 1724 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-16 02:21:45,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66243 states. [2023-12-16 02:21:46,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66243 to 65553. [2023-12-16 02:21:46,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65553 states, 65552 states have (on average 1.0330729802294363) internal successors, (67720), 65552 states have internal predecessors, (67720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:21:46,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65553 states to 65553 states and 67720 transitions. [2023-12-16 02:21:46,734 INFO L78 Accepts]: Start accepts. Automaton has 65553 states and 67720 transitions. Word has length 1716 [2023-12-16 02:21:46,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:21:46,736 INFO L495 AbstractCegarLoop]: Abstraction has 65553 states and 67720 transitions. [2023-12-16 02:21:46,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 411.3333333333333) internal successors, (1234), 3 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:21:46,736 INFO L276 IsEmpty]: Start isEmpty. Operand 65553 states and 67720 transitions. [2023-12-16 02:21:46,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1804 [2023-12-16 02:21:46,805 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:21:46,806 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:21:46,820 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-16 02:21:47,012 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,SelfDestructingSolverStorable15 [2023-12-16 02:21:47,012 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:21:47,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:21:47,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1508199023, now seen corresponding path program 1 times [2023-12-16 02:21:47,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:21:47,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546857481] [2023-12-16 02:21:47,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:21:47,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:21:47,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:21:49,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3154 backedges. 1104 proven. 1794 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2023-12-16 02:21:49,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:21:49,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546857481] [2023-12-16 02:21:49,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546857481] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 02:21:49,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318704207] [2023-12-16 02:21:49,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:21:49,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:21:49,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:21:49,762 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:21:49,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 02:21:50,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:21:50,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 2032 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 02:21:50,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:21:50,790 INFO L134 CoverageAnalysis]: Checked inductivity of 3154 backedges. 1592 proven. 0 refuted. 0 times theorem prover too weak. 1562 trivial. 0 not checked. [2023-12-16 02:21:50,790 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:21:50,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318704207] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:21:50,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 02:21:50,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-12-16 02:21:50,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024916100] [2023-12-16 02:21:50,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:21:50,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:21:50,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:21:50,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:21:50,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-16 02:21:50,793 INFO L87 Difference]: Start difference. First operand 65553 states and 67720 transitions. Second operand has 3 states, 3 states have (on average 322.3333333333333) internal successors, (967), 3 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:21:52,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:21:52,527 INFO L93 Difference]: Finished difference Result 129725 states and 134022 transitions. [2023-12-16 02:21:52,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:21:52,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 322.3333333333333) internal successors, (967), 3 states have internal predecessors, (967), 0 states have call successors, (0), 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 1803 [2023-12-16 02:21:52,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:21:52,624 INFO L225 Difference]: With dead ends: 129725 [2023-12-16 02:21:52,624 INFO L226 Difference]: Without dead ends: 64863 [2023-12-16 02:21:52,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1809 GetRequests, 1803 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-16 02:21:52,646 INFO L413 NwaCegarLoop]: 879 mSDtfsCounter, 373 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1606 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 1805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-16 02:21:52,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 885 Invalid, 1805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1606 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-16 02:21:52,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64863 states. [2023-12-16 02:21:53,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64863 to 64173. [2023-12-16 02:21:53,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64173 states, 64172 states have (on average 1.0236240104718568) internal successors, (65688), 64172 states have internal predecessors, (65688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:21:53,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64173 states to 64173 states and 65688 transitions. [2023-12-16 02:21:53,442 INFO L78 Accepts]: Start accepts. Automaton has 64173 states and 65688 transitions. Word has length 1803 [2023-12-16 02:21:53,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:21:53,443 INFO L495 AbstractCegarLoop]: Abstraction has 64173 states and 65688 transitions. [2023-12-16 02:21:53,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 322.3333333333333) internal successors, (967), 3 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:21:53,443 INFO L276 IsEmpty]: Start isEmpty. Operand 64173 states and 65688 transitions. [2023-12-16 02:21:53,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1810 [2023-12-16 02:21:53,702 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:21:53,702 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 02:21:53,720 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-16 02:21:53,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-16 02:21:53,910 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:21:53,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:21:53,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1497139345, now seen corresponding path program 1 times [2023-12-16 02:21:53,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:21:53,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852701635] [2023-12-16 02:21:53,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:21:53,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:21:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2023-12-16 02:21:55,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-16 02:21:55,754 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Termination requested (timeout or resource limit) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkResolutionNode(Interpolator.java:275) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:152) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:260) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:237) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:869) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:793) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:352) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:283) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:164) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:327) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:229) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-16 02:21:55,757 INFO L158 Benchmark]: Toolchain (without parser) took 71863.69ms. Allocated memory was 205.5MB in the beginning and 5.0GB in the end (delta: 4.8GB). Free memory was 165.7MB in the beginning and 3.3GB in the end (delta: -3.2GB). Peak memory consumption was 1.7GB. Max. memory is 8.0GB. [2023-12-16 02:21:55,757 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 205.5MB. Free memory is still 155.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 02:21:55,758 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1007.57ms. Allocated memory was 205.5MB in the beginning and 294.6MB in the end (delta: 89.1MB). Free memory was 165.7MB in the beginning and 193.4MB in the end (delta: -27.6MB). Peak memory consumption was 69.9MB. Max. memory is 8.0GB. [2023-12-16 02:21:55,758 INFO L158 Benchmark]: Boogie Procedure Inliner took 240.59ms. Allocated memory is still 294.6MB. Free memory was 193.4MB in the beginning and 223.2MB in the end (delta: -29.9MB). Peak memory consumption was 49.8MB. Max. memory is 8.0GB. [2023-12-16 02:21:55,758 INFO L158 Benchmark]: Boogie Preprocessor took 365.03ms. Allocated memory is still 294.6MB. Free memory was 223.2MB in the beginning and 176.5MB in the end (delta: 46.8MB). Peak memory consumption was 55.7MB. Max. memory is 8.0GB. [2023-12-16 02:21:55,758 INFO L158 Benchmark]: RCFGBuilder took 2964.38ms. Allocated memory was 294.6MB in the beginning and 546.3MB in the end (delta: 251.7MB). Free memory was 176.5MB in the beginning and 453.7MB in the end (delta: -277.2MB). Peak memory consumption was 161.1MB. Max. memory is 8.0GB. [2023-12-16 02:21:55,758 INFO L158 Benchmark]: TraceAbstraction took 67279.80ms. Allocated memory was 546.3MB in the beginning and 5.0GB in the end (delta: 4.5GB). Free memory was 453.2MB in the beginning and 3.3GB in the end (delta: -2.9GB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. [2023-12-16 02:21:55,759 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 205.5MB. Free memory is still 155.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1007.57ms. Allocated memory was 205.5MB in the beginning and 294.6MB in the end (delta: 89.1MB). Free memory was 165.7MB in the beginning and 193.4MB in the end (delta: -27.6MB). Peak memory consumption was 69.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 240.59ms. Allocated memory is still 294.6MB. Free memory was 193.4MB in the beginning and 223.2MB in the end (delta: -29.9MB). Peak memory consumption was 49.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 365.03ms. Allocated memory is still 294.6MB. Free memory was 223.2MB in the beginning and 176.5MB in the end (delta: 46.8MB). Peak memory consumption was 55.7MB. Max. memory is 8.0GB. * RCFGBuilder took 2964.38ms. Allocated memory was 294.6MB in the beginning and 546.3MB in the end (delta: 251.7MB). Free memory was 176.5MB in the beginning and 453.7MB in the end (delta: -277.2MB). Peak memory consumption was 161.1MB. Max. memory is 8.0GB. * TraceAbstraction took 67279.80ms. Allocated memory was 546.3MB in the beginning and 5.0GB in the end (delta: 4.5GB). Free memory was 453.2MB in the beginning and 3.3GB in the end (delta: -2.9GB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Termination requested (timeout or resource limit) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Termination requested (timeout or resource limit): de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkResolutionNode(Interpolator.java:275) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2023-12-16 02:21:55,769 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end Completed graceful shutdown