/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 19:15:37,875 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 19:15:37,937 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 19:15:37,940 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 19:15:37,941 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 19:15:37,969 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 19:15:37,969 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 19:15:37,969 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 19:15:37,970 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 19:15:37,970 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 19:15:37,970 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 19:15:37,970 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 19:15:37,971 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 19:15:37,971 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 19:15:37,971 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 19:15:37,971 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 19:15:37,972 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 19:15:37,972 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 19:15:37,972 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 19:15:37,972 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 19:15:37,972 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 19:15:37,973 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 19:15:37,973 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 19:15:37,973 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 19:15:37,973 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 19:15:37,973 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 19:15:37,974 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 19:15:37,974 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 19:15:37,974 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 19:15:37,974 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 19:15:37,974 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 19:15:37,974 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 19:15:37,975 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:15:37,975 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 19:15:37,975 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 19:15:37,975 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 19:15:37,975 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 19:15:37,975 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 19:15:37,975 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 19:15:37,976 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 19:15:37,976 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 19:15:37,976 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 19:15:37,976 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 19:15:37,976 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 19:15:38,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 19:15:38,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 19:15:38,181 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 19:15:38,181 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 19:15:38,182 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 19:15:38,182 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label46.c [2023-12-15 19:15:39,376 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 19:15:39,761 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 19:15:39,762 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label46.c [2023-12-15 19:15:39,781 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0eea2a61d/effc8c2474f049b996bd0c83f8daa5d5/FLAG62faa5f33 [2023-12-15 19:15:39,797 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0eea2a61d/effc8c2474f049b996bd0c83f8daa5d5 [2023-12-15 19:15:39,799 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 19:15:39,800 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 19:15:39,802 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 19:15:39,803 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 19:15:39,806 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 19:15:39,806 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:15:39" (1/1) ... [2023-12-15 19:15:39,807 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dd9932a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:15:39, skipping insertion in model container [2023-12-15 19:15:39,807 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:15:39" (1/1) ... [2023-12-15 19:15:39,892 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 19:15:40,058 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_label46.c[3974,3987] [2023-12-15 19:15:40,721 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:15:40,728 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 19:15:40,744 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_label46.c[3974,3987] [2023-12-15 19:15:40,919 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:15:40,934 INFO L206 MainTranslator]: Completed translation [2023-12-15 19:15:40,934 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:15:40 WrapperNode [2023-12-15 19:15:40,934 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 19:15:40,935 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 19:15:40,935 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 19:15:40,935 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 19:15:40,939 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:15:40" (1/1) ... [2023-12-15 19:15:40,965 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:15:40" (1/1) ... [2023-12-15 19:15:41,087 INFO L138 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 4135 [2023-12-15 19:15:41,088 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 19:15:41,088 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 19:15:41,088 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 19:15:41,088 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 19:15:41,096 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:15:40" (1/1) ... [2023-12-15 19:15:41,096 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:15:40" (1/1) ... [2023-12-15 19:15:41,114 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:15:40" (1/1) ... [2023-12-15 19:15:41,171 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 19:15:41,172 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:15:40" (1/1) ... [2023-12-15 19:15:41,172 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:15:40" (1/1) ... [2023-12-15 19:15:41,297 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:15:40" (1/1) ... [2023-12-15 19:15:41,345 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:15:40" (1/1) ... [2023-12-15 19:15:41,358 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:15:40" (1/1) ... [2023-12-15 19:15:41,381 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:15:40" (1/1) ... [2023-12-15 19:15:41,420 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 19:15:41,437 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 19:15:41,438 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 19:15:41,438 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 19:15:41,439 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:15:40" (1/1) ... [2023-12-15 19:15:41,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:15:41,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:15:41,469 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 19:15:41,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 19:15:41,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 19:15:41,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 19:15:41,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 19:15:41,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 19:15:41,543 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 19:15:41,544 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 19:15:43,901 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 19:15:43,944 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 19:15:43,944 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 19:15:43,944 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:15:43 BoogieIcfgContainer [2023-12-15 19:15:43,944 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 19:15:43,945 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 19:15:43,946 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 19:15:43,948 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 19:15:43,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 07:15:39" (1/3) ... [2023-12-15 19:15:43,948 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47e5b95a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:15:43, skipping insertion in model container [2023-12-15 19:15:43,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:15:40" (2/3) ... [2023-12-15 19:15:43,948 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47e5b95a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:15:43, skipping insertion in model container [2023-12-15 19:15:43,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:15:43" (3/3) ... [2023-12-15 19:15:43,949 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label46.c [2023-12-15 19:15:43,960 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 19:15:43,960 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 19:15:43,995 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 19:15:43,999 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;@fbfe779, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 19:15:43,999 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 19:15:44,004 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) [2023-12-15 19:15:44,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-15 19:15:44,008 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:15:44,009 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] [2023-12-15 19:15:44,009 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:15:44,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:15:44,012 INFO L85 PathProgramCache]: Analyzing trace with hash -933377489, now seen corresponding path program 1 times [2023-12-15 19:15:44,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:15:44,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392952574] [2023-12-15 19:15:44,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:15:44,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:15:44,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:15:44,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:15:44,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:15:44,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392952574] [2023-12-15 19:15:44,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392952574] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:15:44,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:15:44,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:15:44,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055186299] [2023-12-15 19:15:44,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:15:44,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 19:15:44,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:15:44,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 19:15:44,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:15:44,134 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 17.5) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:15:44,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:15:44,206 INFO L93 Difference]: Finished difference Result 1389 states and 2763 transitions. [2023-12-15 19:15:44,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 19:15:44,208 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2023-12-15 19:15:44,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:15:44,218 INFO L225 Difference]: With dead ends: 1389 [2023-12-15 19:15:44,218 INFO L226 Difference]: Without dead ends: 693 [2023-12-15 19:15:44,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:15:44,224 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 [2023-12-15 19:15:44,224 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] [2023-12-15 19:15:44,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2023-12-15 19:15:44,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 693. [2023-12-15 19:15:44,275 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) [2023-12-15 19:15:44,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1317 transitions. [2023-12-15 19:15:44,277 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1317 transitions. Word has length 35 [2023-12-15 19:15:44,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:15:44,278 INFO L495 AbstractCegarLoop]: Abstraction has 693 states and 1317 transitions. [2023-12-15 19:15:44,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:15:44,278 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1317 transitions. [2023-12-15 19:15:44,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-15 19:15:44,278 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:15:44,278 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] [2023-12-15 19:15:44,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 19:15:44,279 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:15:44,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:15:44,279 INFO L85 PathProgramCache]: Analyzing trace with hash 122704508, now seen corresponding path program 1 times [2023-12-15 19:15:44,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:15:44,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188897670] [2023-12-15 19:15:44,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:15:44,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:15:44,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:15:44,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:15:44,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:15:44,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188897670] [2023-12-15 19:15:44,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188897670] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:15:44,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:15:44,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:15:44,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646796701] [2023-12-15 19:15:44,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:15:44,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:15:44,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:15:44,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:15:44,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:15:44,365 INFO L87 Difference]: Start difference. First operand 693 states and 1317 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:15:47,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:15:47,054 INFO L93 Difference]: Finished difference Result 2075 states and 3948 transitions. [2023-12-15 19:15:47,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:15:47,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2023-12-15 19:15:47,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:15:47,060 INFO L225 Difference]: With dead ends: 2075 [2023-12-15 19:15:47,060 INFO L226 Difference]: Without dead ends: 1383 [2023-12-15 19:15:47,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:15:47,063 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 684 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1959 mSolverCounterSat, 907 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 2866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 907 IncrementalHoareTripleChecker+Valid, 1959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:15:47,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [684 Valid, 248 Invalid, 2866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [907 Valid, 1959 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-15 19:15:47,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2023-12-15 19:15:47,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 1383. [2023-12-15 19:15:47,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1383 states, 1382 states have (on average 1.7344428364688858) internal successors, (2397), 1382 states have internal predecessors, (2397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:15:47,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 2397 transitions. [2023-12-15 19:15:47,101 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 2397 transitions. Word has length 35 [2023-12-15 19:15:47,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:15:47,101 INFO L495 AbstractCegarLoop]: Abstraction has 1383 states and 2397 transitions. [2023-12-15 19:15:47,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:15:47,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 2397 transitions. [2023-12-15 19:15:47,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-15 19:15:47,114 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:15:47,114 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:15:47,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 19:15:47,115 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:15:47,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:15:47,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1407109102, now seen corresponding path program 1 times [2023-12-15 19:15:47,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:15:47,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593749057] [2023-12-15 19:15:47,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:15:47,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:15:47,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:15:47,347 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:15:47,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:15:47,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593749057] [2023-12-15 19:15:47,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593749057] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:15:47,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:15:47,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:15:47,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442361755] [2023-12-15 19:15:47,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:15:47,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:15:47,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:15:47,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:15:47,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:15:47,350 INFO L87 Difference]: Start difference. First operand 1383 states and 2397 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:15:50,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:15:50,735 INFO L93 Difference]: Finished difference Result 4841 states and 8274 transitions. [2023-12-15 19:15:50,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 19:15:50,736 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2023-12-15 19:15:50,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:15:50,745 INFO L225 Difference]: With dead ends: 4841 [2023-12-15 19:15:50,745 INFO L226 Difference]: Without dead ends: 3459 [2023-12-15 19:15:50,746 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 [2023-12-15 19:15:50,747 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 2035 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 3269 mSolverCounterSat, 1420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2035 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 4689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1420 IncrementalHoareTripleChecker+Valid, 3269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:15:50,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2035 Valid, 133 Invalid, 4689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1420 Valid, 3269 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-15 19:15:50,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3459 states. [2023-12-15 19:15:50,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3459 to 3453. [2023-12-15 19:15:50,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3453 states, 3452 states have (on average 1.541135573580533) internal successors, (5320), 3452 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:15:50,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3453 states to 3453 states and 5320 transitions. [2023-12-15 19:15:50,854 INFO L78 Accepts]: Start accepts. Automaton has 3453 states and 5320 transitions. Word has length 104 [2023-12-15 19:15:50,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:15:50,858 INFO L495 AbstractCegarLoop]: Abstraction has 3453 states and 5320 transitions. [2023-12-15 19:15:50,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:15:50,863 INFO L276 IsEmpty]: Start isEmpty. Operand 3453 states and 5320 transitions. [2023-12-15 19:15:50,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-15 19:15:50,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:15:50,867 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:15:50,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 19:15:50,867 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:15:50,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:15:50,867 INFO L85 PathProgramCache]: Analyzing trace with hash 874586883, now seen corresponding path program 1 times [2023-12-15 19:15:50,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:15:50,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250006764] [2023-12-15 19:15:50,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:15:50,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:15:50,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:15:51,289 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:15:51,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:15:51,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250006764] [2023-12-15 19:15:51,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250006764] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:15:51,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:15:51,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:15:51,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401132565] [2023-12-15 19:15:51,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:15:51,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:15:51,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:15:51,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:15:51,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:15:51,291 INFO L87 Difference]: Start difference. First operand 3453 states and 5320 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:15:54,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:15:54,572 INFO L93 Difference]: Finished difference Result 8975 states and 13755 transitions. [2023-12-15 19:15:54,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:15:54,572 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2023-12-15 19:15:54,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:15:54,586 INFO L225 Difference]: With dead ends: 8975 [2023-12-15 19:15:54,586 INFO L226 Difference]: Without dead ends: 5523 [2023-12-15 19:15:54,589 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 [2023-12-15 19:15:54,590 INFO L413 NwaCegarLoop]: 628 mSDtfsCounter, 1872 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4115 mSolverCounterSat, 521 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1872 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 4636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 521 IncrementalHoareTripleChecker+Valid, 4115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:15:54,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1872 Valid, 645 Invalid, 4636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [521 Valid, 4115 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-15 19:15:54,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5523 states. [2023-12-15 19:15:54,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5523 to 5523. [2023-12-15 19:15:54,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5523 states, 5522 states have (on average 1.3491488591090184) internal successors, (7450), 5522 states have internal predecessors, (7450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:15:54,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5523 states to 5523 states and 7450 transitions. [2023-12-15 19:15:54,656 INFO L78 Accepts]: Start accepts. Automaton has 5523 states and 7450 transitions. Word has length 153 [2023-12-15 19:15:54,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:15:54,656 INFO L495 AbstractCegarLoop]: Abstraction has 5523 states and 7450 transitions. [2023-12-15 19:15:54,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:15:54,656 INFO L276 IsEmpty]: Start isEmpty. Operand 5523 states and 7450 transitions. [2023-12-15 19:15:54,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-12-15 19:15:54,658 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:15:54,659 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-15 19:15:54,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 19:15:54,659 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:15:54,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:15:54,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1968705875, now seen corresponding path program 1 times [2023-12-15 19:15:54,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:15:54,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301866293] [2023-12-15 19:15:54,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:15:54,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:15:54,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:15:54,982 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:15:54,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:15:54,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301866293] [2023-12-15 19:15:54,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301866293] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:15:54,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:15:54,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:15:54,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096080165] [2023-12-15 19:15:54,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:15:54,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:15:54,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:15:54,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:15:54,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:15:54,988 INFO L87 Difference]: Start difference. First operand 5523 states and 7450 transitions. Second operand has 4 states, 4 states have (on average 73.5) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:15:57,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:15:57,020 INFO L93 Difference]: Finished difference Result 12478 states and 17179 transitions. [2023-12-15 19:15:57,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:15:57,020 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 73.5) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 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 294 [2023-12-15 19:15:57,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:15:57,038 INFO L225 Difference]: With dead ends: 12478 [2023-12-15 19:15:57,038 INFO L226 Difference]: Without dead ends: 7593 [2023-12-15 19:15:57,043 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 [2023-12-15 19:15:57,044 INFO L413 NwaCegarLoop]: 622 mSDtfsCounter, 529 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2591 mSolverCounterSat, 868 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 3459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 868 IncrementalHoareTripleChecker+Valid, 2591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-15 19:15:57,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 633 Invalid, 3459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [868 Valid, 2591 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-15 19:15:57,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7593 states. [2023-12-15 19:15:57,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7593 to 6903. [2023-12-15 19:15:57,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6903 states, 6902 states have (on average 1.2031295276731382) internal successors, (8304), 6902 states have internal predecessors, (8304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:15:57,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6903 states to 6903 states and 8304 transitions. [2023-12-15 19:15:57,129 INFO L78 Accepts]: Start accepts. Automaton has 6903 states and 8304 transitions. Word has length 294 [2023-12-15 19:15:57,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:15:57,130 INFO L495 AbstractCegarLoop]: Abstraction has 6903 states and 8304 transitions. [2023-12-15 19:15:57,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.5) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:15:57,130 INFO L276 IsEmpty]: Start isEmpty. Operand 6903 states and 8304 transitions. [2023-12-15 19:15:57,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 850 [2023-12-15 19:15:57,140 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:15:57,141 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-15 19:15:57,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 19:15:57,141 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:15:57,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:15:57,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1142325772, now seen corresponding path program 1 times [2023-12-15 19:15:57,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:15:57,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839646504] [2023-12-15 19:15:57,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:15:57,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:15:57,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:15:57,938 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-12-15 19:15:57,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:15:57,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839646504] [2023-12-15 19:15:57,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839646504] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:15:57,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677955499] [2023-12-15 19:15:57,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:15:57,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:15:57,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:15:57,942 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:15:57,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 19:15:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:15:58,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 965 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:15:58,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:15:58,890 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2023-12-15 19:15:58,890 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:15:58,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677955499] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:15:58,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:15:58,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-12-15 19:15:58,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039816724] [2023-12-15 19:15:58,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:15:58,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:15:58,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:15:58,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:15:58,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:15:58,895 INFO L87 Difference]: Start difference. First operand 6903 states and 8304 transitions. Second operand has 3 states, 3 states have (on average 173.0) internal successors, (519), 2 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:16:00,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:16:00,505 INFO L93 Difference]: Finished difference Result 15875 states and 19292 transitions. [2023-12-15 19:16:00,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:16:00,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 173.0) internal successors, (519), 2 states have internal predecessors, (519), 0 states have call successors, (0), 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 849 [2023-12-15 19:16:00,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:16:00,529 INFO L225 Difference]: With dead ends: 15875 [2023-12-15 19:16:00,530 INFO L226 Difference]: Without dead ends: 9663 [2023-12-15 19:16:00,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 851 GetRequests, 848 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:16:00,544 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 195 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1911 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 2216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 1911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:16:00,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 273 Invalid, 2216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 1911 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-15 19:16:00,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9663 states. [2023-12-15 19:16:00,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9663 to 8283. [2023-12-15 19:16:00,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8283 states, 8282 states have (on average 1.2049021975368268) internal successors, (9979), 8282 states have internal predecessors, (9979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:16:00,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8283 states to 8283 states and 9979 transitions. [2023-12-15 19:16:00,672 INFO L78 Accepts]: Start accepts. Automaton has 8283 states and 9979 transitions. Word has length 849 [2023-12-15 19:16:00,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:16:00,673 INFO L495 AbstractCegarLoop]: Abstraction has 8283 states and 9979 transitions. [2023-12-15 19:16:00,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.0) internal successors, (519), 2 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:16:00,674 INFO L276 IsEmpty]: Start isEmpty. Operand 8283 states and 9979 transitions. [2023-12-15 19:16:00,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 920 [2023-12-15 19:16:00,688 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:16:00,689 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2023-12-15 19:16:00,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 19:16:00,895 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 [2023-12-15 19:16:00,895 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:16:00,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:16:00,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1923404301, now seen corresponding path program 1 times [2023-12-15 19:16:00,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:16:00,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139420004] [2023-12-15 19:16:00,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:16:00,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:16:01,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:16:01,441 INFO L134 CoverageAnalysis]: Checked inductivity of 538 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2023-12-15 19:16:01,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:16:01,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139420004] [2023-12-15 19:16:01,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139420004] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:16:01,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:16:01,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:16:01,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445977956] [2023-12-15 19:16:01,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:16:01,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:16:01,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:16:01,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:16:01,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:16:01,445 INFO L87 Difference]: Start difference. First operand 8283 states and 9979 transitions. Second operand has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 2 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:16:02,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:16:02,914 INFO L93 Difference]: Finished difference Result 20015 states and 25035 transitions. [2023-12-15 19:16:02,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:16:02,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 2 states have internal predecessors, (553), 0 states have call successors, (0), 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 919 [2023-12-15 19:16:02,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:16:02,945 INFO L225 Difference]: With dead ends: 20015 [2023-12-15 19:16:02,945 INFO L226 Difference]: Without dead ends: 12423 [2023-12-15 19:16:02,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:16:02,952 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 226 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1668 mSolverCounterSat, 602 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 2270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 602 IncrementalHoareTripleChecker+Valid, 1668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:16:02,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 387 Invalid, 2270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [602 Valid, 1668 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 19:16:02,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12423 states. [2023-12-15 19:16:03,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12423 to 10353. [2023-12-15 19:16:03,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10353 states, 10352 states have (on average 1.1824768160741885) internal successors, (12241), 10352 states have internal predecessors, (12241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:16:03,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10353 states to 10353 states and 12241 transitions. [2023-12-15 19:16:03,079 INFO L78 Accepts]: Start accepts. Automaton has 10353 states and 12241 transitions. Word has length 919 [2023-12-15 19:16:03,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:16:03,080 INFO L495 AbstractCegarLoop]: Abstraction has 10353 states and 12241 transitions. [2023-12-15 19:16:03,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 2 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:16:03,081 INFO L276 IsEmpty]: Start isEmpty. Operand 10353 states and 12241 transitions. [2023-12-15 19:16:03,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 935 [2023-12-15 19:16:03,099 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:16:03,100 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2023-12-15 19:16:03,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 19:16:03,101 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:16:03,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:16:03,101 INFO L85 PathProgramCache]: Analyzing trace with hash -992640178, now seen corresponding path program 1 times [2023-12-15 19:16:03,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:16:03,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810831881] [2023-12-15 19:16:03,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:16:03,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:16:03,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:16:03,598 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 467 trivial. 0 not checked. [2023-12-15 19:16:03,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:16:03,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810831881] [2023-12-15 19:16:03,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810831881] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:16:03,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:16:03,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:16:03,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757452689] [2023-12-15 19:16:03,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:16:03,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:16:03,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:16:03,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:16:03,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:16:03,601 INFO L87 Difference]: Start difference. First operand 10353 states and 12241 transitions. Second operand has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 2 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:16:05,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:16:05,052 INFO L93 Difference]: Finished difference Result 23465 states and 27661 transitions. [2023-12-15 19:16:05,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:16:05,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 2 states have internal predecessors, (553), 0 states have call successors, (0), 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 934 [2023-12-15 19:16:05,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:16:05,073 INFO L225 Difference]: With dead ends: 23465 [2023-12-15 19:16:05,073 INFO L226 Difference]: Without dead ends: 13803 [2023-12-15 19:16:05,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:16:05,083 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 181 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1945 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 2077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:16:05,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 424 Invalid, 2077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1945 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 19:16:05,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13803 states. [2023-12-15 19:16:05,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13803 to 13803. [2023-12-15 19:16:05,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13803 states, 13802 states have (on average 1.1555571656281698) internal successors, (15949), 13802 states have internal predecessors, (15949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:16:05,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13803 states to 13803 states and 15949 transitions. [2023-12-15 19:16:05,217 INFO L78 Accepts]: Start accepts. Automaton has 13803 states and 15949 transitions. Word has length 934 [2023-12-15 19:16:05,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:16:05,218 INFO L495 AbstractCegarLoop]: Abstraction has 13803 states and 15949 transitions. [2023-12-15 19:16:05,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 2 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:16:05,218 INFO L276 IsEmpty]: Start isEmpty. Operand 13803 states and 15949 transitions. [2023-12-15 19:16:05,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 968 [2023-12-15 19:16:05,224 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:16:05,226 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:16:05,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 19:16:05,226 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:16:05,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:16:05,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1878244229, now seen corresponding path program 1 times [2023-12-15 19:16:05,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:16:05,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311662761] [2023-12-15 19:16:05,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:16:05,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:16:05,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:16:06,173 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 337 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-12-15 19:16:06,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:16:06,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311662761] [2023-12-15 19:16:06,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311662761] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:16:06,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:16:06,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:16:06,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417449102] [2023-12-15 19:16:06,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:16:06,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:16:06,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:16:06,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:16:06,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:16:06,176 INFO L87 Difference]: Start difference. First operand 13803 states and 15949 transitions. Second operand has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:16:07,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:16:07,976 INFO L93 Difference]: Finished difference Result 33815 states and 39478 transitions. [2023-12-15 19:16:07,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:16:07,977 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 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 967 [2023-12-15 19:16:08,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:16:08,054 INFO L225 Difference]: With dead ends: 33815 [2023-12-15 19:16:08,054 INFO L226 Difference]: Without dead ends: 20703 [2023-12-15 19:16:08,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:16:08,062 INFO L413 NwaCegarLoop]: 1007 mSDtfsCounter, 576 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1986 mSolverCounterSat, 344 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 2330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 344 IncrementalHoareTripleChecker+Valid, 1986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-15 19:16:08,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 1012 Invalid, 2330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [344 Valid, 1986 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-15 19:16:08,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20703 states. [2023-12-15 19:16:08,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20703 to 20703. [2023-12-15 19:16:08,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20703 states, 20702 states have (on average 1.1316297942227804) internal successors, (23427), 20702 states have internal predecessors, (23427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:16:08,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20703 states to 20703 states and 23427 transitions. [2023-12-15 19:16:08,214 INFO L78 Accepts]: Start accepts. Automaton has 20703 states and 23427 transitions. Word has length 967 [2023-12-15 19:16:08,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:16:08,215 INFO L495 AbstractCegarLoop]: Abstraction has 20703 states and 23427 transitions. [2023-12-15 19:16:08,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:16:08,215 INFO L276 IsEmpty]: Start isEmpty. Operand 20703 states and 23427 transitions. [2023-12-15 19:16:08,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 975 [2023-12-15 19:16:08,221 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:16:08,222 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:16:08,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 19:16:08,222 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:16:08,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:16:08,223 INFO L85 PathProgramCache]: Analyzing trace with hash 531152688, now seen corresponding path program 1 times [2023-12-15 19:16:08,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:16:08,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058196025] [2023-12-15 19:16:08,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:16:08,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:16:08,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:16:09,846 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 311 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:16:09,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:16:09,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058196025] [2023-12-15 19:16:09,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058196025] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:16:09,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228405848] [2023-12-15 19:16:09,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:16:09,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:16:09,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:16:09,856 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:16:09,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 19:16:10,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:16:10,055 INFO L262 TraceCheckSpWp]: Trace formula consists of 1112 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:16:10,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:16:10,103 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2023-12-15 19:16:10,103 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:16:10,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228405848] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:16:10,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:16:10,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-15 19:16:10,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679084269] [2023-12-15 19:16:10,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:16:10,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:16:10,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:16:10,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:16:10,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-15 19:16:10,106 INFO L87 Difference]: Start difference. First operand 20703 states and 23427 transitions. Second operand has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:16:11,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:16:11,703 INFO L93 Difference]: Finished difference Result 40025 states and 45469 transitions. [2023-12-15 19:16:11,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:16:11,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 0 states have call successors, (0), 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 974 [2023-12-15 19:16:11,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:16:11,726 INFO L225 Difference]: With dead ends: 40025 [2023-12-15 19:16:11,726 INFO L226 Difference]: Without dead ends: 20703 [2023-12-15 19:16:11,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 980 GetRequests, 973 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-15 19:16:11,743 INFO L413 NwaCegarLoop]: 771 mSDtfsCounter, 761 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1975 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 2166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:16:11,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 777 Invalid, 2166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 1975 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 19:16:11,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20703 states. [2023-12-15 19:16:11,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20703 to 20703. [2023-12-15 19:16:11,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20703 states, 20702 states have (on average 1.1053521398898658) internal successors, (22883), 20702 states have internal predecessors, (22883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:16:11,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20703 states to 20703 states and 22883 transitions. [2023-12-15 19:16:11,915 INFO L78 Accepts]: Start accepts. Automaton has 20703 states and 22883 transitions. Word has length 974 [2023-12-15 19:16:11,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:16:11,916 INFO L495 AbstractCegarLoop]: Abstraction has 20703 states and 22883 transitions. [2023-12-15 19:16:11,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:16:11,916 INFO L276 IsEmpty]: Start isEmpty. Operand 20703 states and 22883 transitions. [2023-12-15 19:16:11,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1087 [2023-12-15 19:16:11,924 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:16:11,925 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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] [2023-12-15 19:16:11,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 19:16:12,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-15 19:16:12,130 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:16:12,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:16:12,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1385296128, now seen corresponding path program 1 times [2023-12-15 19:16:12,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:16:12,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332761245] [2023-12-15 19:16:12,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:16:12,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:16:12,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:16:13,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 513 proven. 576 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-12-15 19:16:13,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:16:13,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332761245] [2023-12-15 19:16:13,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332761245] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:16:13,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803847033] [2023-12-15 19:16:13,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:16:13,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:16:13,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:16:13,403 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) [2023-12-15 19:16:13,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 19:16:13,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:16:13,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 1276 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:16:13,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:16:13,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 487 proven. 0 refuted. 0 times theorem prover too weak. 669 trivial. 0 not checked. [2023-12-15 19:16:13,774 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:16:13,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803847033] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:16:13,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:16:13,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-12-15 19:16:13,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768104607] [2023-12-15 19:16:13,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:16:13,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:16:13,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:16:13,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:16:13,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-15 19:16:13,776 INFO L87 Difference]: Start difference. First operand 20703 states and 22883 transitions. Second operand has 3 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:16:15,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:16:15,382 INFO L93 Difference]: Finished difference Result 46235 states and 52130 transitions. [2023-12-15 19:16:15,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:16:15,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 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 1086 [2023-12-15 19:16:15,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:16:15,410 INFO L225 Difference]: With dead ends: 46235 [2023-12-15 19:16:15,410 INFO L226 Difference]: Without dead ends: 26913 [2023-12-15 19:16:15,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1092 GetRequests, 1086 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-15 19:16:15,476 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 698 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1822 mSolverCounterSat, 494 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 2316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 494 IncrementalHoareTripleChecker+Valid, 1822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:16:15,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 163 Invalid, 2316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [494 Valid, 1822 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-15 19:16:15,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26913 states. [2023-12-15 19:16:15,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26913 to 26913. [2023-12-15 19:16:15,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26913 states, 26912 states have (on average 1.1102482164090368) internal successors, (29879), 26912 states have internal predecessors, (29879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:16:15,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26913 states to 26913 states and 29879 transitions. [2023-12-15 19:16:15,686 INFO L78 Accepts]: Start accepts. Automaton has 26913 states and 29879 transitions. Word has length 1086 [2023-12-15 19:16:15,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:16:15,686 INFO L495 AbstractCegarLoop]: Abstraction has 26913 states and 29879 transitions. [2023-12-15 19:16:15,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:16:15,687 INFO L276 IsEmpty]: Start isEmpty. Operand 26913 states and 29879 transitions. [2023-12-15 19:16:15,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1111 [2023-12-15 19:16:15,696 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:16:15,696 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-15 19:16:15,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 19:16:15,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:16:15,903 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:16:15,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:16:15,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1782278436, now seen corresponding path program 1 times [2023-12-15 19:16:15,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:16:15,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047648109] [2023-12-15 19:16:15,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:16:15,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:16:16,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:16:17,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1242 backedges. 430 proven. 555 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2023-12-15 19:16:17,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:16:17,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047648109] [2023-12-15 19:16:17,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047648109] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:16:17,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297294746] [2023-12-15 19:16:17,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:16:17,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:16:17,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:16:17,197 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) [2023-12-15 19:16:17,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 19:16:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:16:17,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 1302 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:16:17,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:16:17,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1242 backedges. 519 proven. 0 refuted. 0 times theorem prover too weak. 723 trivial. 0 not checked. [2023-12-15 19:16:17,563 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:16:17,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297294746] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:16:17,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:16:17,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-15 19:16:17,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2643252] [2023-12-15 19:16:17,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:16:17,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:16:17,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:16:17,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:16:17,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:16:17,567 INFO L87 Difference]: Start difference. First operand 26913 states and 29879 transitions. Second operand has 3 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:16:19,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:16:19,297 INFO L93 Difference]: Finished difference Result 59345 states and 66353 transitions. [2023-12-15 19:16:19,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:16:19,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 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 1110 [2023-12-15 19:16:19,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:16:19,325 INFO L225 Difference]: With dead ends: 59345 [2023-12-15 19:16:19,325 INFO L226 Difference]: Without dead ends: 30363 [2023-12-15 19:16:19,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1115 GetRequests, 1110 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:16:19,339 INFO L413 NwaCegarLoop]: 966 mSDtfsCounter, 647 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1704 mSolverCounterSat, 573 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 2277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 573 IncrementalHoareTripleChecker+Valid, 1704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:16:19,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [647 Valid, 972 Invalid, 2277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [573 Valid, 1704 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-15 19:16:19,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30363 states. [2023-12-15 19:16:19,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30363 to 29673. [2023-12-15 19:16:19,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29673 states, 29672 states have (on average 1.0550013480722567) internal successors, (31304), 29672 states have internal predecessors, (31304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:16:19,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29673 states to 29673 states and 31304 transitions. [2023-12-15 19:16:19,563 INFO L78 Accepts]: Start accepts. Automaton has 29673 states and 31304 transitions. Word has length 1110 [2023-12-15 19:16:19,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:16:19,564 INFO L495 AbstractCegarLoop]: Abstraction has 29673 states and 31304 transitions. [2023-12-15 19:16:19,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:16:19,564 INFO L276 IsEmpty]: Start isEmpty. Operand 29673 states and 31304 transitions. [2023-12-15 19:16:19,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1331 [2023-12-15 19:16:19,582 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:16:19,583 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-15 19:16:19,597 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-15 19:16:19,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:16:19,788 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:16:19,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:16:19,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1658538668, now seen corresponding path program 1 times [2023-12-15 19:16:19,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:16:19,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541468668] [2023-12-15 19:16:19,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:16:19,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:16:19,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:16:20,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1914 backedges. 564 proven. 205 refuted. 0 times theorem prover too weak. 1145 trivial. 0 not checked. [2023-12-15 19:16:20,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:16:20,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541468668] [2023-12-15 19:16:20,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541468668] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:16:20,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421243433] [2023-12-15 19:16:20,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:16:20,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:16:20,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:16:20,842 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) [2023-12-15 19:16:20,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 19:16:21,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:16:21,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 1544 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:16:21,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:16:21,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1914 backedges. 605 proven. 0 refuted. 0 times theorem prover too weak. 1309 trivial. 0 not checked. [2023-12-15 19:16:21,192 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:16:21,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421243433] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:16:21,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:16:21,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-12-15 19:16:21,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592743651] [2023-12-15 19:16:21,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:16:21,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:16:21,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:16:21,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:16:21,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:16:21,194 INFO L87 Difference]: Start difference. First operand 29673 states and 31304 transitions. Second operand has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:16:22,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:16:22,860 INFO L93 Difference]: Finished difference Result 59345 states and 62630 transitions. [2023-12-15 19:16:22,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:16:22,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1330 [2023-12-15 19:16:22,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:16:22,886 INFO L225 Difference]: With dead ends: 59345 [2023-12-15 19:16:22,887 INFO L226 Difference]: Without dead ends: 29673 [2023-12-15 19:16:22,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1333 GetRequests, 1330 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:16:22,917 INFO L413 NwaCegarLoop]: 799 mSDtfsCounter, 642 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1655 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 1908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 1655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:16:22,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [642 Valid, 804 Invalid, 1908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 1655 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-15 19:16:22,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29673 states. [2023-12-15 19:16:23,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29673 to 29673. [2023-12-15 19:16:23,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29673 states, 29672 states have (on average 1.0458344567268805) internal successors, (31032), 29672 states have internal predecessors, (31032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:16:23,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29673 states to 29673 states and 31032 transitions. [2023-12-15 19:16:23,157 INFO L78 Accepts]: Start accepts. Automaton has 29673 states and 31032 transitions. Word has length 1330 [2023-12-15 19:16:23,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:16:23,158 INFO L495 AbstractCegarLoop]: Abstraction has 29673 states and 31032 transitions. [2023-12-15 19:16:23,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:16:23,158 INFO L276 IsEmpty]: Start isEmpty. Operand 29673 states and 31032 transitions. [2023-12-15 19:16:23,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1351 [2023-12-15 19:16:23,176 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:16:23,176 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:16:23,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 19:16:23,382 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,SelfDestructingSolverStorable12 [2023-12-15 19:16:23,382 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:16:23,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:16:23,384 INFO L85 PathProgramCache]: Analyzing trace with hash -994527800, now seen corresponding path program 1 times [2023-12-15 19:16:23,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:16:23,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464502004] [2023-12-15 19:16:23,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:16:23,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:16:23,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:16:23,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2334 backedges. 1513 proven. 0 refuted. 0 times theorem prover too weak. 821 trivial. 0 not checked. [2023-12-15 19:16:23,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:16:23,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464502004] [2023-12-15 19:16:23,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464502004] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:16:23,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:16:23,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:16:23,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129231644] [2023-12-15 19:16:23,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:16:23,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:16:23,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:16:23,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:16:23,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:16:23,944 INFO L87 Difference]: Start difference. First operand 29673 states and 31032 transitions. Second operand has 3 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:16:25,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:16:25,615 INFO L93 Difference]: Finished difference Result 66245 states and 69636 transitions. [2023-12-15 19:16:25,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:16:25,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 0 states have call successors, (0), 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 1350 [2023-12-15 19:16:25,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:16:25,654 INFO L225 Difference]: With dead ends: 66245 [2023-12-15 19:16:25,654 INFO L226 Difference]: Without dead ends: 37263 [2023-12-15 19:16:25,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:16:25,675 INFO L413 NwaCegarLoop]: 952 mSDtfsCounter, 546 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1762 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 1888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:16:25,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 958 Invalid, 1888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1762 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-15 19:16:25,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37263 states. [2023-12-15 19:16:25,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37263 to 36573. [2023-12-15 19:16:26,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36573 states, 36572 states have (on average 1.044925079295636) internal successors, (38215), 36572 states have internal predecessors, (38215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:16:26,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36573 states to 36573 states and 38215 transitions. [2023-12-15 19:16:26,055 INFO L78 Accepts]: Start accepts. Automaton has 36573 states and 38215 transitions. Word has length 1350 [2023-12-15 19:16:26,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:16:26,056 INFO L495 AbstractCegarLoop]: Abstraction has 36573 states and 38215 transitions. [2023-12-15 19:16:26,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:16:26,056 INFO L276 IsEmpty]: Start isEmpty. Operand 36573 states and 38215 transitions. [2023-12-15 19:16:26,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1359 [2023-12-15 19:16:26,078 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:16:26,079 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:16:26,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 19:16:26,079 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:16:26,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:16:26,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1362247806, now seen corresponding path program 1 times [2023-12-15 19:16:26,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:16:26,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242666233] [2023-12-15 19:16:26,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:16:26,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:16:26,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:16:26,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2712 backedges. 1717 proven. 0 refuted. 0 times theorem prover too weak. 995 trivial. 0 not checked. [2023-12-15 19:16:26,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:16:26,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242666233] [2023-12-15 19:16:26,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242666233] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:16:26,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:16:26,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:16:26,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437484391] [2023-12-15 19:16:26,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:16:26,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:16:26,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:16:26,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:16:26,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:16:26,875 INFO L87 Difference]: Start difference. First operand 36573 states and 38215 transitions. Second operand has 3 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:16:28,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:16:28,321 INFO L93 Difference]: Finished difference Result 79355 states and 83048 transitions. [2023-12-15 19:16:28,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:16:28,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1358 [2023-12-15 19:16:28,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:16:28,364 INFO L225 Difference]: With dead ends: 79355 [2023-12-15 19:16:28,364 INFO L226 Difference]: Without dead ends: 43473 [2023-12-15 19:16:28,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:16:28,388 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 602 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1792 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 1886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:16:28,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [602 Valid, 274 Invalid, 1886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1792 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 19:16:28,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43473 states. [2023-12-15 19:16:28,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43473 to 43473. [2023-12-15 19:16:28,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43473 states, 43472 states have (on average 1.0425561280824438) internal successors, (45322), 43472 states have internal predecessors, (45322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:16:28,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43473 states to 43473 states and 45322 transitions. [2023-12-15 19:16:28,725 INFO L78 Accepts]: Start accepts. Automaton has 43473 states and 45322 transitions. Word has length 1358 [2023-12-15 19:16:28,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:16:28,726 INFO L495 AbstractCegarLoop]: Abstraction has 43473 states and 45322 transitions. [2023-12-15 19:16:28,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:16:28,729 INFO L276 IsEmpty]: Start isEmpty. Operand 43473 states and 45322 transitions. [2023-12-15 19:16:28,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1360 [2023-12-15 19:16:28,750 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:16:28,750 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:16:28,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 19:16:28,750 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:16:28,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:16:28,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1473141267, now seen corresponding path program 1 times [2023-12-15 19:16:28,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:16:28,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888715167] [2023-12-15 19:16:28,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:16:28,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:16:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:16:30,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2719 backedges. 1648 proven. 697 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2023-12-15 19:16:30,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:16:30,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888715167] [2023-12-15 19:16:30,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888715167] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:16:30,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590579031] [2023-12-15 19:16:30,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:16:30,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:16:30,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:16:30,562 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:16:30,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 19:16:30,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:16:30,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 1624 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:16:30,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:16:31,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2719 backedges. 1558 proven. 0 refuted. 0 times theorem prover too weak. 1161 trivial. 0 not checked. [2023-12-15 19:16:31,023 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:16:31,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590579031] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:16:31,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:16:31,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-15 19:16:31,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137340426] [2023-12-15 19:16:31,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:16:31,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:16:31,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:16:31,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:16:31,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:16:31,026 INFO L87 Difference]: Start difference. First operand 43473 states and 45322 transitions. Second operand has 3 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:16:32,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:16:32,544 INFO L93 Difference]: Finished difference Result 85565 states and 89258 transitions. [2023-12-15 19:16:32,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:16:32,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 0 states have call successors, (0), 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 1359 [2023-12-15 19:16:32,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:16:32,588 INFO L225 Difference]: With dead ends: 85565 [2023-12-15 19:16:32,588 INFO L226 Difference]: Without dead ends: 42783 [2023-12-15 19:16:32,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1366 GetRequests, 1361 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:16:32,615 INFO L413 NwaCegarLoop]: 930 mSDtfsCounter, 624 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1671 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 1743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:16:32,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 936 Invalid, 1743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1671 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 19:16:32,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42783 states. [2023-12-15 19:16:32,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42783 to 42783. [2023-12-15 19:16:32,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42783 states, 42782 states have (on average 1.0409751764760882) internal successors, (44535), 42782 states have internal predecessors, (44535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:16:33,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42783 states to 42783 states and 44535 transitions. [2023-12-15 19:16:33,022 INFO L78 Accepts]: Start accepts. Automaton has 42783 states and 44535 transitions. Word has length 1359 [2023-12-15 19:16:33,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:16:33,023 INFO L495 AbstractCegarLoop]: Abstraction has 42783 states and 44535 transitions. [2023-12-15 19:16:33,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:16:33,023 INFO L276 IsEmpty]: Start isEmpty. Operand 42783 states and 44535 transitions. [2023-12-15 19:16:33,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1369 [2023-12-15 19:16:33,045 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:16:33,046 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:16:33,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 19:16:33,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-15 19:16:33,251 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:16:33,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:16:33,252 INFO L85 PathProgramCache]: Analyzing trace with hash 143479899, now seen corresponding path program 1 times [2023-12-15 19:16:33,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:16:33,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844220626] [2023-12-15 19:16:33,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:16:33,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:16:33,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:16:34,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2441 backedges. 1574 proven. 0 refuted. 0 times theorem prover too weak. 867 trivial. 0 not checked. [2023-12-15 19:16:34,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:16:34,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844220626] [2023-12-15 19:16:34,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844220626] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:16:34,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:16:34,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:16:34,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347370560] [2023-12-15 19:16:34,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:16:34,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:16:34,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:16:34,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:16:34,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:16:34,313 INFO L87 Difference]: Start difference. First operand 42783 states and 44535 transitions. Second operand has 3 states, 3 states have (on average 253.33333333333334) internal successors, (760), 3 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:16:35,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:16:35,772 INFO L93 Difference]: Finished difference Result 84875 states and 88378 transitions. [2023-12-15 19:16:35,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:16:35,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 253.33333333333334) internal successors, (760), 3 states have internal predecessors, (760), 0 states have call successors, (0), 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 1368 [2023-12-15 19:16:35,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:16:35,815 INFO L225 Difference]: With dead ends: 84875 [2023-12-15 19:16:35,815 INFO L226 Difference]: Without dead ends: 42783 [2023-12-15 19:16:35,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:16:35,842 INFO L413 NwaCegarLoop]: 913 mSDtfsCounter, 553 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1652 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 1756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:16:35,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 919 Invalid, 1756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1652 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 19:16:35,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42783 states. [2023-12-15 19:16:36,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42783 to 42093. [2023-12-15 19:16:36,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42093 states, 42092 states have (on average 1.0348997434191771) internal successors, (43561), 42092 states have internal predecessors, (43561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:16:36,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42093 states to 42093 states and 43561 transitions. [2023-12-15 19:16:36,346 INFO L78 Accepts]: Start accepts. Automaton has 42093 states and 43561 transitions. Word has length 1368 [2023-12-15 19:16:36,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:16:36,347 INFO L495 AbstractCegarLoop]: Abstraction has 42093 states and 43561 transitions. [2023-12-15 19:16:36,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 253.33333333333334) internal successors, (760), 3 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:16:36,347 INFO L276 IsEmpty]: Start isEmpty. Operand 42093 states and 43561 transitions. [2023-12-15 19:16:36,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1371 [2023-12-15 19:16:36,363 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:16:36,363 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-15 19:16:36,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 19:16:36,364 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:16:36,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:16:36,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1832097090, now seen corresponding path program 1 times [2023-12-15 19:16:36,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:16:36,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131544081] [2023-12-15 19:16:36,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:16:36,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:16:36,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:16:37,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2360 backedges. 724 proven. 0 refuted. 0 times theorem prover too weak. 1636 trivial. 0 not checked. [2023-12-15 19:16:37,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:16:37,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131544081] [2023-12-15 19:16:37,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131544081] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:16:37,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:16:37,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:16:37,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709727261] [2023-12-15 19:16:37,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:16:37,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:16:37,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:16:37,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:16:37,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:16:37,399 INFO L87 Difference]: Start difference. First operand 42093 states and 43561 transitions. Second operand has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:16:38,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:16:38,899 INFO L93 Difference]: Finished difference Result 97295 states and 101072 transitions. [2023-12-15 19:16:38,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:16:38,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 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 1370 [2023-12-15 19:16:38,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:16:38,970 INFO L225 Difference]: With dead ends: 97295 [2023-12-15 19:16:38,970 INFO L226 Difference]: Without dead ends: 55893 [2023-12-15 19:16:38,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:16:38,996 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 610 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1739 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 1977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 1739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:16:38,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [610 Valid, 269 Invalid, 1977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 1739 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 19:16:39,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55893 states. [2023-12-15 19:16:39,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55893 to 48303. [2023-12-15 19:16:39,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48303 states, 48302 states have (on average 1.0324417208397167) internal successors, (49869), 48302 states have internal predecessors, (49869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:16:39,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48303 states to 48303 states and 49869 transitions. [2023-12-15 19:16:39,567 INFO L78 Accepts]: Start accepts. Automaton has 48303 states and 49869 transitions. Word has length 1370 [2023-12-15 19:16:39,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:16:39,568 INFO L495 AbstractCegarLoop]: Abstraction has 48303 states and 49869 transitions. [2023-12-15 19:16:39,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:16:39,568 INFO L276 IsEmpty]: Start isEmpty. Operand 48303 states and 49869 transitions. [2023-12-15 19:16:39,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1402 [2023-12-15 19:16:39,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:16:39,586 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-15 19:16:39,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 19:16:39,587 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:16:39,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:16:39,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1365012616, now seen corresponding path program 1 times [2023-12-15 19:16:39,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:16:39,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388011040] [2023-12-15 19:16:39,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:16:39,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:16:39,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:16:40,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2159 backedges. 203 proven. 0 refuted. 0 times theorem prover too weak. 1956 trivial. 0 not checked. [2023-12-15 19:16:40,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:16:40,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388011040] [2023-12-15 19:16:40,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388011040] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:16:40,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:16:40,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:16:40,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785202309] [2023-12-15 19:16:40,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:16:40,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:16:40,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:16:40,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:16:40,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:16:40,395 INFO L87 Difference]: Start difference. First operand 48303 states and 49869 transitions. Second operand has 3 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-15 19:16:41,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:16:41,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:16:41,592 INFO L413 NwaCegarLoop]: 864 mSDtfsCounter, 659 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1594 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 1709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 19:16:41,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [659 Valid, 869 Invalid, 1709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1594 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 19:16:41,592 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 19:16:41,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 19:16:41,593 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (48303states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (38966 states constructed, input type IntersectNwa). [2023-12-15 19:16:41,596 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:16:41,598 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 19:16:41,599 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 07:16:41 BoogieIcfgContainer [2023-12-15 19:16:41,599 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 19:16:41,599 INFO L158 Benchmark]: Toolchain (without parser) took 61798.94ms. Allocated memory was 287.3MB in the beginning and 3.9GB in the end (delta: 3.6GB). Free memory was 229.6MB in the beginning and 2.9GB in the end (delta: -2.7GB). Peak memory consumption was 1.0GB. Max. memory is 8.0GB. [2023-12-15 19:16:41,599 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 180.4MB. Free memory was 134.0MB in the beginning and 133.9MB in the end (delta: 137.8kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 19:16:41,600 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1131.74ms. Allocated memory is still 287.3MB. Free memory was 229.2MB in the beginning and 178.8MB in the end (delta: 50.5MB). Peak memory consumption was 53.5MB. Max. memory is 8.0GB. [2023-12-15 19:16:41,600 INFO L158 Benchmark]: Boogie Procedure Inliner took 152.88ms. Allocated memory is still 287.3MB. Free memory was 178.8MB in the beginning and 134.7MB in the end (delta: 44.0MB). Peak memory consumption was 43.0MB. Max. memory is 8.0GB. [2023-12-15 19:16:41,604 INFO L158 Benchmark]: Boogie Preprocessor took 332.05ms. Allocated memory is still 287.3MB. Free memory was 134.7MB in the beginning and 207.3MB in the end (delta: -72.5MB). Peak memory consumption was 68.5MB. Max. memory is 8.0GB. [2023-12-15 19:16:41,605 INFO L158 Benchmark]: RCFGBuilder took 2506.88ms. Allocated memory was 287.3MB in the beginning and 499.1MB in the end (delta: 211.8MB). Free memory was 207.3MB in the beginning and 356.9MB in the end (delta: -149.6MB). Peak memory consumption was 161.3MB. Max. memory is 8.0GB. [2023-12-15 19:16:41,608 INFO L158 Benchmark]: TraceAbstraction took 57653.44ms. Allocated memory was 499.1MB in the beginning and 3.9GB in the end (delta: 3.4GB). Free memory was 355.9MB in the beginning and 2.9GB in the end (delta: -2.5GB). Peak memory consumption was 955.9MB. Max. memory is 8.0GB. [2023-12-15 19:16:41,612 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 180.4MB. Free memory was 134.0MB in the beginning and 133.9MB in the end (delta: 137.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1131.74ms. Allocated memory is still 287.3MB. Free memory was 229.2MB in the beginning and 178.8MB in the end (delta: 50.5MB). Peak memory consumption was 53.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 152.88ms. Allocated memory is still 287.3MB. Free memory was 178.8MB in the beginning and 134.7MB in the end (delta: 44.0MB). Peak memory consumption was 43.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 332.05ms. Allocated memory is still 287.3MB. Free memory was 134.7MB in the beginning and 207.3MB in the end (delta: -72.5MB). Peak memory consumption was 68.5MB. Max. memory is 8.0GB. * RCFGBuilder took 2506.88ms. Allocated memory was 287.3MB in the beginning and 499.1MB in the end (delta: 211.8MB). Free memory was 207.3MB in the beginning and 356.9MB in the end (delta: -149.6MB). Peak memory consumption was 161.3MB. Max. memory is 8.0GB. * TraceAbstraction took 57653.44ms. Allocated memory was 499.1MB in the beginning and 3.9GB in the end (delta: 3.4GB). Free memory was 355.9MB in the beginning and 2.9GB in the end (delta: -2.5GB). Peak memory consumption was 955.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 127]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 127). Cancelled while NwaCegarLoop was constructing difference of abstraction (48303states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (38966 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 695 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 57.6s, OverallIterations: 19, TraceHistogramMax: 9, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 34.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12640 SdHoareTripleChecker+Valid, 30.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12640 mSDsluCounter, 12013 SdHoareTripleChecker+Invalid, 25.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 129 mSDsCounter, 7359 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 36812 IncrementalHoareTripleChecker+Invalid, 44171 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7359 mSolverCounterUnsat, 11884 mSDtfsCounter, 36812 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6774 GetRequests, 6728 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48303occurred in iteration=18, InterpolantAutomatonStates: 57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.9s AutomataMinimizationTime, 18 MinimizatonAttempts, 13806 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 14.4s InterpolantComputationTime, 23704 NumberOfCodeBlocks, 23704 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 23679 ConstructedInterpolants, 0 QuantifiedInterpolants, 68052 SizeOfPredicates, 0 NumberOfNonLiveVariables, 7823 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 25 InterpolantComputations, 19 PerfectInterpolantSequences, 27592/30029 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown