/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 18:00:02,329 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 18:00:02,398 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 18:00:02,401 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 18:00:02,401 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 18:00:02,422 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 18:00:02,422 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 18:00:02,423 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 18:00:02,423 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 18:00:02,423 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 18:00:02,424 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 18:00:02,424 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 18:00:02,424 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 18:00:02,424 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 18:00:02,425 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 18:00:02,425 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 18:00:02,425 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 18:00:02,425 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 18:00:02,426 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 18:00:02,426 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 18:00:02,426 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 18:00:02,432 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 18:00:02,432 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 18:00:02,433 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 18:00:02,433 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 18:00:02,433 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 18:00:02,433 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 18:00:02,433 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 18:00:02,434 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 18:00:02,434 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 18:00:02,434 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 18:00:02,434 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 18:00:02,434 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 18:00:02,435 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 18:00:02,435 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 18:00:02,435 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 18:00:02,435 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 18:00:02,435 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 18:00:02,435 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 18:00:02,436 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 18:00:02,436 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 18:00:02,436 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 18:00:02,436 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 18:00:02,437 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 18:00:02,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 18:00:02,647 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 18:00:02,649 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 18:00:02,650 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 18:00:02,656 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 18:00:02,657 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label41.c [2023-12-20 18:00:03,768 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 18:00:04,285 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 18:00:04,286 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label41.c [2023-12-20 18:00:04,320 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e4aad258/6e6beaa3821946e681fd00502cdb1d08/FLAGa8682d8c4 [2023-12-20 18:00:04,334 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e4aad258/6e6beaa3821946e681fd00502cdb1d08 [2023-12-20 18:00:04,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 18:00:04,337 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 18:00:04,339 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 18:00:04,339 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 18:00:04,343 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 18:00:04,344 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 06:00:04" (1/1) ... [2023-12-20 18:00:04,344 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bb9ac7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:00:04, skipping insertion in model container [2023-12-20 18:00:04,345 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 06:00:04" (1/1) ... [2023-12-20 18:00:04,473 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 18:00:04,694 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label41.c[1319,1332] [2023-12-20 18:00:05,838 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 18:00:05,855 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 18:00:05,870 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/Problem19_label41.c[1319,1332] [2023-12-20 18:00:06,416 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 18:00:06,442 INFO L206 MainTranslator]: Completed translation [2023-12-20 18:00:06,444 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:00:06 WrapperNode [2023-12-20 18:00:06,445 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 18:00:06,446 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 18:00:06,446 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 18:00:06,446 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 18:00:06,451 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:00:06" (1/1) ... [2023-12-20 18:00:06,582 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:00:06" (1/1) ... [2023-12-20 18:00:07,351 INFO L138 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9431 [2023-12-20 18:00:07,352 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 18:00:07,352 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 18:00:07,352 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 18:00:07,352 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 18:00:07,360 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:00:06" (1/1) ... [2023-12-20 18:00:07,361 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:00:06" (1/1) ... [2023-12-20 18:00:07,531 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:00:06" (1/1) ... [2023-12-20 18:00:07,766 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]. [2023-12-20 18:00:07,767 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:00:06" (1/1) ... [2023-12-20 18:00:07,767 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:00:06" (1/1) ... [2023-12-20 18:00:08,036 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:00:06" (1/1) ... [2023-12-20 18:00:08,080 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:00:06" (1/1) ... [2023-12-20 18:00:08,130 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:00:06" (1/1) ... [2023-12-20 18:00:08,266 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:00:06" (1/1) ... [2023-12-20 18:00:08,437 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 18:00:08,440 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 18:00:08,440 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 18:00:08,440 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 18:00:08,441 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:00:06" (1/1) ... [2023-12-20 18:00:08,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 18:00:08,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 18:00:08,478 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) [2023-12-20 18:00:08,479 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 [2023-12-20 18:00:08,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 18:00:08,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 18:00:08,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 18:00:08,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 18:00:08,573 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 18:00:08,575 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 18:00:15,799 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 18:00:15,860 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 18:00:15,860 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 18:00:15,861 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 06:00:15 BoogieIcfgContainer [2023-12-20 18:00:15,861 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 18:00:15,862 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 18:00:15,863 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 18:00:15,865 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 18:00:15,865 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 06:00:04" (1/3) ... [2023-12-20 18:00:15,866 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57b1460d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 06:00:15, skipping insertion in model container [2023-12-20 18:00:15,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:00:06" (2/3) ... [2023-12-20 18:00:15,866 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57b1460d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 06:00:15, skipping insertion in model container [2023-12-20 18:00:15,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 06:00:15" (3/3) ... [2023-12-20 18:00:15,868 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label41.c [2023-12-20 18:00:15,882 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 18:00:15,882 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 18:00:15,957 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 18:00:15,963 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;@5e242a3a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 18:00:15,964 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 18:00:15,973 INFO L276 IsEmpty]: Start isEmpty. Operand has 1686 states, 1684 states have (on average 1.902019002375297) internal successors, (3203), 1685 states have internal predecessors, (3203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:00:15,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-20 18:00:15,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:00:15,979 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-20 18:00:15,980 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:00:15,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:00:15,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1072129965, now seen corresponding path program 1 times [2023-12-20 18:00:15,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:00:15,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557134255] [2023-12-20 18:00:15,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:00:15,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:00:16,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:00:16,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 18:00:16,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:00:16,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557134255] [2023-12-20 18:00:16,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557134255] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:00:16,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 18:00:16,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 18:00:16,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875138017] [2023-12-20 18:00:16,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:00:16,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 18:00:16,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:00:16,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 18:00:16,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 18:00:16,210 INFO L87 Difference]: Start difference. First operand has 1686 states, 1684 states have (on average 1.902019002375297) internal successors, (3203), 1685 states have internal predecessors, (3203), 0 states have call successors, (0), 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 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:00:22,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:00:22,965 INFO L93 Difference]: Finished difference Result 4795 states and 9189 transitions. [2023-12-20 18:00:22,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 18:00:22,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2023-12-20 18:00:22,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:00:22,997 INFO L225 Difference]: With dead ends: 4795 [2023-12-20 18:00:22,997 INFO L226 Difference]: Without dead ends: 3106 [2023-12-20 18:00:23,006 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 [2023-12-20 18:00:23,019 INFO L413 NwaCegarLoop]: 1213 mSDtfsCounter, 1545 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 4581 mSolverCounterSat, 1050 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 5631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1050 IncrementalHoareTripleChecker+Valid, 4581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-12-20 18:00:23,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1545 Valid, 1392 Invalid, 5631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1050 Valid, 4581 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2023-12-20 18:00:23,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3106 states. [2023-12-20 18:00:23,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3106 to 3105. [2023-12-20 18:00:23,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3105 states, 3104 states have (on average 1.653028350515464) internal successors, (5131), 3104 states have internal predecessors, (5131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:00:23,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3105 states to 3105 states and 5131 transitions. [2023-12-20 18:00:23,148 INFO L78 Accepts]: Start accepts. Automaton has 3105 states and 5131 transitions. Word has length 5 [2023-12-20 18:00:23,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:00:23,149 INFO L495 AbstractCegarLoop]: Abstraction has 3105 states and 5131 transitions. [2023-12-20 18:00:23,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:00:23,149 INFO L276 IsEmpty]: Start isEmpty. Operand 3105 states and 5131 transitions. [2023-12-20 18:00:23,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-20 18:00:23,151 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:00:23,151 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 18:00:23,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 18:00:23,151 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:00:23,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:00:23,152 INFO L85 PathProgramCache]: Analyzing trace with hash 589701081, now seen corresponding path program 1 times [2023-12-20 18:00:23,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:00:23,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665861689] [2023-12-20 18:00:23,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:00:23,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:00:23,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:00:23,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 18:00:23,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:00:23,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665861689] [2023-12-20 18:00:23,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665861689] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:00:23,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 18:00:23,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 18:00:23,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49820752] [2023-12-20 18:00:23,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:00:23,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 18:00:23,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:00:23,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 18:00:23,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 18:00:23,536 INFO L87 Difference]: Start difference. First operand 3105 states and 5131 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:00:35,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:00:35,098 INFO L93 Difference]: Finished difference Result 10390 states and 16942 transitions. [2023-12-20 18:00:35,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 18:00:35,099 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2023-12-20 18:00:35,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:00:35,124 INFO L225 Difference]: With dead ends: 10390 [2023-12-20 18:00:35,124 INFO L226 Difference]: Without dead ends: 7286 [2023-12-20 18:00:35,132 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 [2023-12-20 18:00:35,133 INFO L413 NwaCegarLoop]: 1840 mSDtfsCounter, 4207 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 11123 mSolverCounterSat, 1405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4207 SdHoareTripleChecker+Valid, 2102 SdHoareTripleChecker+Invalid, 12528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1405 IncrementalHoareTripleChecker+Valid, 11123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2023-12-20 18:00:35,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4207 Valid, 2102 Invalid, 12528 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1405 Valid, 11123 Invalid, 0 Unknown, 0 Unchecked, 11.2s Time] [2023-12-20 18:00:35,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7286 states. [2023-12-20 18:00:35,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7286 to 7235. [2023-12-20 18:00:35,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7235 states, 7234 states have (on average 1.52156483273431) internal successors, (11007), 7234 states have internal predecessors, (11007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:00:35,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7235 states to 7235 states and 11007 transitions. [2023-12-20 18:00:35,277 INFO L78 Accepts]: Start accepts. Automaton has 7235 states and 11007 transitions. Word has length 74 [2023-12-20 18:00:35,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:00:35,278 INFO L495 AbstractCegarLoop]: Abstraction has 7235 states and 11007 transitions. [2023-12-20 18:00:35,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:00:35,278 INFO L276 IsEmpty]: Start isEmpty. Operand 7235 states and 11007 transitions. [2023-12-20 18:00:35,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2023-12-20 18:00:35,281 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:00:35,282 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 18:00:35,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 18:00:35,282 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:00:35,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:00:35,283 INFO L85 PathProgramCache]: Analyzing trace with hash -113407814, now seen corresponding path program 1 times [2023-12-20 18:00:35,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:00:35,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65409839] [2023-12-20 18:00:35,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:00:35,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:00:35,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:00:35,761 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 18:00:35,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:00:35,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65409839] [2023-12-20 18:00:35,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65409839] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:00:35,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 18:00:35,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 18:00:35,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585208537] [2023-12-20 18:00:35,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:00:35,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 18:00:35,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:00:35,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 18:00:35,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 18:00:35,767 INFO L87 Difference]: Start difference. First operand 7235 states and 11007 transitions. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:00:41,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:00:41,288 INFO L93 Difference]: Finished difference Result 15857 states and 25895 transitions. [2023-12-20 18:00:41,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 18:00:41,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 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 240 [2023-12-20 18:00:41,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:00:41,325 INFO L225 Difference]: With dead ends: 15857 [2023-12-20 18:00:41,326 INFO L226 Difference]: Without dead ends: 9988 [2023-12-20 18:00:41,339 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 [2023-12-20 18:00:41,341 INFO L413 NwaCegarLoop]: 2903 mSDtfsCounter, 1605 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 3685 mSolverCounterSat, 1906 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1605 SdHoareTripleChecker+Valid, 3092 SdHoareTripleChecker+Invalid, 5591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1906 IncrementalHoareTripleChecker+Valid, 3685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-12-20 18:00:41,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1605 Valid, 3092 Invalid, 5591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1906 Valid, 3685 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-12-20 18:00:41,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9988 states. [2023-12-20 18:00:41,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9988 to 9986. [2023-12-20 18:00:41,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9986 states, 9985 states have (on average 1.4262393590385578) internal successors, (14241), 9985 states have internal predecessors, (14241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:00:41,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9986 states to 9986 states and 14241 transitions. [2023-12-20 18:00:41,515 INFO L78 Accepts]: Start accepts. Automaton has 9986 states and 14241 transitions. Word has length 240 [2023-12-20 18:00:41,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:00:41,519 INFO L495 AbstractCegarLoop]: Abstraction has 9986 states and 14241 transitions. [2023-12-20 18:00:41,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:00:41,520 INFO L276 IsEmpty]: Start isEmpty. Operand 9986 states and 14241 transitions. [2023-12-20 18:00:41,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2023-12-20 18:00:41,523 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:00:41,523 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 18:00:41,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 18:00:41,524 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:00:41,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:00:41,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1226466816, now seen corresponding path program 1 times [2023-12-20 18:00:41,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:00:41,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385817247] [2023-12-20 18:00:41,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:00:41,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:00:41,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:00:42,023 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 18:00:42,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:00:42,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385817247] [2023-12-20 18:00:42,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385817247] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:00:42,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 18:00:42,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 18:00:42,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513569236] [2023-12-20 18:00:42,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:00:42,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 18:00:42,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:00:42,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 18:00:42,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 18:00:42,026 INFO L87 Difference]: Start difference. First operand 9986 states and 14241 transitions. Second operand has 4 states, 4 states have (on average 76.75) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:00:49,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:00:49,088 INFO L93 Difference]: Finished difference Result 18637 states and 27135 transitions. [2023-12-20 18:00:49,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 18:00:49,089 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 76.75) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 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 307 [2023-12-20 18:00:49,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:00:49,119 INFO L225 Difference]: With dead ends: 18637 [2023-12-20 18:00:49,120 INFO L226 Difference]: Without dead ends: 9986 [2023-12-20 18:00:49,133 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 [2023-12-20 18:00:49,140 INFO L413 NwaCegarLoop]: 1762 mSDtfsCounter, 1138 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 7314 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 2103 SdHoareTripleChecker+Invalid, 7322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 7314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-12-20 18:00:49,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1138 Valid, 2103 Invalid, 7322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 7314 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-12-20 18:00:49,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9986 states. [2023-12-20 18:00:49,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9986 to 9986. [2023-12-20 18:00:49,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9986 states, 9985 states have (on average 1.4253380070105157) internal successors, (14232), 9985 states have internal predecessors, (14232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:00:49,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9986 states to 9986 states and 14232 transitions. [2023-12-20 18:00:49,303 INFO L78 Accepts]: Start accepts. Automaton has 9986 states and 14232 transitions. Word has length 307 [2023-12-20 18:00:49,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:00:49,303 INFO L495 AbstractCegarLoop]: Abstraction has 9986 states and 14232 transitions. [2023-12-20 18:00:49,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.75) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:00:49,304 INFO L276 IsEmpty]: Start isEmpty. Operand 9986 states and 14232 transitions. [2023-12-20 18:00:49,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2023-12-20 18:00:49,310 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:00:49,310 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 18:00:49,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 18:00:49,311 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:00:49,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:00:49,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1289585209, now seen corresponding path program 1 times [2023-12-20 18:00:49,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:00:49,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191824787] [2023-12-20 18:00:49,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:00:49,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:00:49,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:00:50,295 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 29 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 18:00:50,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:00:50,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191824787] [2023-12-20 18:00:50,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191824787] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 18:00:50,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712945141] [2023-12-20 18:00:50,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:00:50,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 18:00:50,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 18:00:50,299 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) [2023-12-20 18:00:50,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 18:00:50,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:00:50,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 672 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 18:00:50,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 18:00:50,640 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 18:00:50,640 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 18:00:50,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712945141] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:00:50,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 18:00:50,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-20 18:00:50,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115462927] [2023-12-20 18:00:50,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:00:50,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 18:00:50,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:00:50,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 18:00:50,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-20 18:00:50,652 INFO L87 Difference]: Start difference. First operand 9986 states and 14232 transitions. Second operand has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:00:56,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:00:56,922 INFO L93 Difference]: Finished difference Result 26789 states and 39373 transitions. [2023-12-20 18:00:56,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 18:00:56,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 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 561 [2023-12-20 18:00:56,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:00:56,981 INFO L225 Difference]: With dead ends: 26789 [2023-12-20 18:00:56,981 INFO L226 Difference]: Without dead ends: 18169 [2023-12-20 18:00:56,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 564 GetRequests, 560 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-20 18:00:56,999 INFO L413 NwaCegarLoop]: 701 mSDtfsCounter, 2530 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 4051 mSolverCounterSat, 1472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2530 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 5523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1472 IncrementalHoareTripleChecker+Valid, 4051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-12-20 18:00:57,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2530 Valid, 811 Invalid, 5523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1472 Valid, 4051 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-12-20 18:00:57,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18169 states. [2023-12-20 18:00:57,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18169 to 18168. [2023-12-20 18:00:57,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18168 states, 18167 states have (on average 1.4180657235647052) internal successors, (25762), 18167 states have internal predecessors, (25762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:00:57,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18168 states to 18168 states and 25762 transitions. [2023-12-20 18:00:57,295 INFO L78 Accepts]: Start accepts. Automaton has 18168 states and 25762 transitions. Word has length 561 [2023-12-20 18:00:57,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:00:57,297 INFO L495 AbstractCegarLoop]: Abstraction has 18168 states and 25762 transitions. [2023-12-20 18:00:57,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:00:57,297 INFO L276 IsEmpty]: Start isEmpty. Operand 18168 states and 25762 transitions. [2023-12-20 18:00:57,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2023-12-20 18:00:57,308 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:00:57,308 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 18:00:57,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 18:00:57,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 18:00:57,516 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:00:57,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:00:57,517 INFO L85 PathProgramCache]: Analyzing trace with hash 970111289, now seen corresponding path program 1 times [2023-12-20 18:00:57,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:00:57,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648948356] [2023-12-20 18:00:57,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:00:57,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:00:57,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:00:57,837 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-20 18:00:57,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:00:57,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648948356] [2023-12-20 18:00:57,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648948356] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:00:57,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 18:00:57,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 18:00:57,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728667450] [2023-12-20 18:00:57,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:00:57,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 18:00:57,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:00:57,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 18:00:57,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 18:00:57,843 INFO L87 Difference]: Start difference. First operand 18168 states and 25762 transitions. Second operand has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 2 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:01:03,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:01:03,183 INFO L93 Difference]: Finished difference Result 40437 states and 57707 transitions. [2023-12-20 18:01:03,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 18:01:03,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 2 states have internal predecessors, (485), 0 states have call successors, (0), 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 568 [2023-12-20 18:01:03,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:01:03,226 INFO L225 Difference]: With dead ends: 40437 [2023-12-20 18:01:03,226 INFO L226 Difference]: Without dead ends: 23635 [2023-12-20 18:01:03,241 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 [2023-12-20 18:01:03,242 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 1391 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 3926 mSolverCounterSat, 1659 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1391 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 5585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1659 IncrementalHoareTripleChecker+Valid, 3926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-12-20 18:01:03,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1391 Valid, 730 Invalid, 5585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1659 Valid, 3926 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-12-20 18:01:03,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23635 states. [2023-12-20 18:01:03,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23635 to 23631. [2023-12-20 18:01:03,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23631 states, 23630 states have (on average 1.326999576809141) internal successors, (31357), 23630 states have internal predecessors, (31357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:01:03,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23631 states to 23631 states and 31357 transitions. [2023-12-20 18:01:03,537 INFO L78 Accepts]: Start accepts. Automaton has 23631 states and 31357 transitions. Word has length 568 [2023-12-20 18:01:03,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:01:03,537 INFO L495 AbstractCegarLoop]: Abstraction has 23631 states and 31357 transitions. [2023-12-20 18:01:03,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 2 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:01:03,538 INFO L276 IsEmpty]: Start isEmpty. Operand 23631 states and 31357 transitions. [2023-12-20 18:01:03,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2023-12-20 18:01:03,541 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:01:03,541 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 18:01:03,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 18:01:03,541 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:01:03,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:01:03,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1502473878, now seen corresponding path program 1 times [2023-12-20 18:01:03,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:01:03,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144891575] [2023-12-20 18:01:03,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:01:03,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:01:03,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:01:04,861 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 7 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 18:01:04,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:01:04,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144891575] [2023-12-20 18:01:04,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144891575] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 18:01:04,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507875124] [2023-12-20 18:01:04,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:01:04,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 18:01:04,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 18:01:04,863 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) [2023-12-20 18:01:04,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 18:01:05,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:01:05,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 682 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 18:01:05,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 18:01:05,056 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-20 18:01:05,056 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 18:01:05,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507875124] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:01:05,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 18:01:05,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-12-20 18:01:05,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851815235] [2023-12-20 18:01:05,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:01:05,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 18:01:05,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:01:05,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 18:01:05,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-20 18:01:05,059 INFO L87 Difference]: Start difference. First operand 23631 states and 31357 transitions. Second operand has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:01:11,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:01:11,164 INFO L93 Difference]: Finished difference Result 67756 states and 90810 transitions. [2023-12-20 18:01:11,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 18:01:11,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 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 574 [2023-12-20 18:01:11,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:01:11,235 INFO L225 Difference]: With dead ends: 67756 [2023-12-20 18:01:11,235 INFO L226 Difference]: Without dead ends: 45491 [2023-12-20 18:01:11,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 580 GetRequests, 574 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-20 18:01:11,257 INFO L413 NwaCegarLoop]: 2081 mSDtfsCounter, 1659 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 4896 mSolverCounterSat, 1053 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1659 SdHoareTripleChecker+Valid, 2182 SdHoareTripleChecker+Invalid, 5949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1053 IncrementalHoareTripleChecker+Valid, 4896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-12-20 18:01:11,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1659 Valid, 2182 Invalid, 5949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1053 Valid, 4896 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-12-20 18:01:11,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45491 states. [2023-12-20 18:01:11,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45491 to 45477. [2023-12-20 18:01:11,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45477 states, 45476 states have (on average 1.303324830679919) internal successors, (59270), 45476 states have internal predecessors, (59270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:01:11,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45477 states to 45477 states and 59270 transitions. [2023-12-20 18:01:11,721 INFO L78 Accepts]: Start accepts. Automaton has 45477 states and 59270 transitions. Word has length 574 [2023-12-20 18:01:11,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:01:11,722 INFO L495 AbstractCegarLoop]: Abstraction has 45477 states and 59270 transitions. [2023-12-20 18:01:11,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:01:11,722 INFO L276 IsEmpty]: Start isEmpty. Operand 45477 states and 59270 transitions. [2023-12-20 18:01:11,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2023-12-20 18:01:11,725 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:01:11,726 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 18:01:11,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 18:01:11,934 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,SelfDestructingSolverStorable6 [2023-12-20 18:01:11,934 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:01:11,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:01:11,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1235375938, now seen corresponding path program 1 times [2023-12-20 18:01:11,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:01:11,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111864520] [2023-12-20 18:01:11,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:01:11,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:01:12,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:01:12,633 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 18:01:12,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:01:12,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111864520] [2023-12-20 18:01:12,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111864520] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:01:12,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 18:01:12,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 18:01:12,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659604126] [2023-12-20 18:01:12,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:01:12,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 18:01:12,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:01:12,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 18:01:12,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 18:01:12,636 INFO L87 Difference]: Start difference. First operand 45477 states and 59270 transitions. Second operand has 3 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:01:18,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:01:18,867 INFO L93 Difference]: Finished difference Result 114212 states and 148416 transitions. [2023-12-20 18:01:18,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 18:01:18,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 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 590 [2023-12-20 18:01:18,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:01:18,962 INFO L225 Difference]: With dead ends: 114212 [2023-12-20 18:01:18,962 INFO L226 Difference]: Without dead ends: 68736 [2023-12-20 18:01:18,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 18:01:18,997 INFO L413 NwaCegarLoop]: 1931 mSDtfsCounter, 1619 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 4165 mSolverCounterSat, 2284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1619 SdHoareTripleChecker+Valid, 2012 SdHoareTripleChecker+Invalid, 6449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2284 IncrementalHoareTripleChecker+Valid, 4165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-12-20 18:01:18,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1619 Valid, 2012 Invalid, 6449 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2284 Valid, 4165 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-12-20 18:01:19,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68736 states. [2023-12-20 18:01:19,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68736 to 68690. [2023-12-20 18:01:19,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68690 states, 68689 states have (on average 1.2739885571197718) internal successors, (87509), 68689 states have internal predecessors, (87509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:01:20,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68690 states to 68690 states and 87509 transitions. [2023-12-20 18:01:20,203 INFO L78 Accepts]: Start accepts. Automaton has 68690 states and 87509 transitions. Word has length 590 [2023-12-20 18:01:20,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:01:20,204 INFO L495 AbstractCegarLoop]: Abstraction has 68690 states and 87509 transitions. [2023-12-20 18:01:20,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:01:20,204 INFO L276 IsEmpty]: Start isEmpty. Operand 68690 states and 87509 transitions. [2023-12-20 18:01:20,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2023-12-20 18:01:20,208 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:01:20,208 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 18:01:20,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 18:01:20,208 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:01:20,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:01:20,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1008734303, now seen corresponding path program 1 times [2023-12-20 18:01:20,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:01:20,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773788660] [2023-12-20 18:01:20,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:01:20,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:01:20,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:01:21,640 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 7 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 18:01:21,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:01:21,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773788660] [2023-12-20 18:01:21,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773788660] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 18:01:21,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457853200] [2023-12-20 18:01:21,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:01:21,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 18:01:21,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 18:01:21,642 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) [2023-12-20 18:01:21,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 18:01:21,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:01:21,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 18:01:21,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 18:01:21,999 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 18:01:22,000 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 18:01:22,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457853200] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:01:22,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 18:01:22,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 18:01:22,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77899808] [2023-12-20 18:01:22,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:01:22,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 18:01:22,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:01:22,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 18:01:22,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-20 18:01:22,002 INFO L87 Difference]: Start difference. First operand 68690 states and 87509 transitions. Second operand has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:01:28,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:01:28,382 INFO L93 Difference]: Finished difference Result 182402 states and 233218 transitions. [2023-12-20 18:01:28,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 18:01:28,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 660 [2023-12-20 18:01:28,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:01:28,566 INFO L225 Difference]: With dead ends: 182402 [2023-12-20 18:01:28,566 INFO L226 Difference]: Without dead ends: 116443 [2023-12-20 18:01:28,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 661 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-20 18:01:28,627 INFO L413 NwaCegarLoop]: 1358 mSDtfsCounter, 1591 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 3844 mSolverCounterSat, 1716 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1591 SdHoareTripleChecker+Valid, 1490 SdHoareTripleChecker+Invalid, 5560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1716 IncrementalHoareTripleChecker+Valid, 3844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-20 18:01:28,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1591 Valid, 1490 Invalid, 5560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1716 Valid, 3844 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-12-20 18:01:28,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116443 states. [2023-12-20 18:01:29,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116443 to 102793. [2023-12-20 18:01:29,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102793 states, 102792 states have (on average 1.1904817495524944) internal successors, (122372), 102792 states have internal predecessors, (122372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:01:30,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102793 states to 102793 states and 122372 transitions. [2023-12-20 18:01:30,097 INFO L78 Accepts]: Start accepts. Automaton has 102793 states and 122372 transitions. Word has length 660 [2023-12-20 18:01:30,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:01:30,098 INFO L495 AbstractCegarLoop]: Abstraction has 102793 states and 122372 transitions. [2023-12-20 18:01:30,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:01:30,099 INFO L276 IsEmpty]: Start isEmpty. Operand 102793 states and 122372 transitions. [2023-12-20 18:01:30,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 703 [2023-12-20 18:01:30,103 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:01:30,103 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 18:01:30,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 18:01:30,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 18:01:30,309 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:01:30,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:01:30,310 INFO L85 PathProgramCache]: Analyzing trace with hash -18733856, now seen corresponding path program 1 times [2023-12-20 18:01:30,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:01:30,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097902004] [2023-12-20 18:01:30,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:01:30,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:01:30,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:01:31,501 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 7 proven. 37 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2023-12-20 18:01:31,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:01:31,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097902004] [2023-12-20 18:01:31,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097902004] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 18:01:31,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556136408] [2023-12-20 18:01:31,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:01:31,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 18:01:31,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 18:01:31,510 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) [2023-12-20 18:01:31,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 18:01:31,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:01:31,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 807 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 18:01:31,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 18:01:31,749 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2023-12-20 18:01:31,749 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 18:01:31,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556136408] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:01:31,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 18:01:31,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-20 18:01:31,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301218355] [2023-12-20 18:01:31,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:01:31,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 18:01:31,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:01:31,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 18:01:31,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 18:01:31,751 INFO L87 Difference]: Start difference. First operand 102793 states and 122372 transitions. Second operand has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:01:38,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:01:38,606 INFO L93 Difference]: Finished difference Result 235673 states and 280555 transitions. [2023-12-20 18:01:38,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 18:01:38,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 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 702 [2023-12-20 18:01:38,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:01:38,785 INFO L225 Difference]: With dead ends: 235673 [2023-12-20 18:01:38,785 INFO L226 Difference]: Without dead ends: 135611 [2023-12-20 18:01:38,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 704 GetRequests, 701 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 18:01:38,821 INFO L413 NwaCegarLoop]: 3001 mSDtfsCounter, 1468 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 4965 mSolverCounterSat, 759 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 3167 SdHoareTripleChecker+Invalid, 5724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 759 IncrementalHoareTripleChecker+Valid, 4965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-12-20 18:01:38,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1468 Valid, 3167 Invalid, 5724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [759 Valid, 4965 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-12-20 18:01:38,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135611 states. [2023-12-20 18:01:40,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135611 to 132831. [2023-12-20 18:01:40,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132831 states, 132830 states have (on average 1.1678611759391704) internal successors, (155127), 132830 states have internal predecessors, (155127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:01:40,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132831 states to 132831 states and 155127 transitions. [2023-12-20 18:01:40,653 INFO L78 Accepts]: Start accepts. Automaton has 132831 states and 155127 transitions. Word has length 702 [2023-12-20 18:01:40,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:01:40,654 INFO L495 AbstractCegarLoop]: Abstraction has 132831 states and 155127 transitions. [2023-12-20 18:01:40,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:01:40,654 INFO L276 IsEmpty]: Start isEmpty. Operand 132831 states and 155127 transitions. [2023-12-20 18:01:40,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 866 [2023-12-20 18:01:40,663 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:01:40,663 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 18:01:40,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 18:01:40,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 18:01:40,869 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:01:40,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:01:40,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1282406210, now seen corresponding path program 1 times [2023-12-20 18:01:40,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:01:40,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114824043] [2023-12-20 18:01:40,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:01:40,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:01:40,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:01:42,125 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 12 proven. 369 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-12-20 18:01:42,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:01:42,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114824043] [2023-12-20 18:01:42,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114824043] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 18:01:42,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035754558] [2023-12-20 18:01:42,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:01:42,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 18:01:42,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 18:01:42,128 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) [2023-12-20 18:01:42,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 18:01:42,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:01:42,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 1021 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 18:01:42,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 18:01:42,409 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 205 proven. 0 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2023-12-20 18:01:42,409 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 18:01:42,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035754558] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:01:42,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 18:01:42,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-20 18:01:42,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808436235] [2023-12-20 18:01:42,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:01:42,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 18:01:42,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:01:42,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 18:01:42,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-20 18:01:42,413 INFO L87 Difference]: Start difference. First operand 132831 states and 155127 transitions. Second operand has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:01:49,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:01:49,310 INFO L93 Difference]: Finished difference Result 265724 states and 310353 transitions. [2023-12-20 18:01:49,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 18:01:49,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 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 865 [2023-12-20 18:01:49,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:01:49,511 INFO L225 Difference]: With dead ends: 265724 [2023-12-20 18:01:49,512 INFO L226 Difference]: Without dead ends: 135624 [2023-12-20 18:01:49,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 869 GetRequests, 865 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-20 18:01:49,587 INFO L413 NwaCegarLoop]: 1091 mSDtfsCounter, 1560 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 4164 mSolverCounterSat, 1710 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1560 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 5874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1710 IncrementalHoareTripleChecker+Valid, 4164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-12-20 18:01:49,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1560 Valid, 1212 Invalid, 5874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1710 Valid, 4164 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-12-20 18:01:49,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135624 states. [2023-12-20 18:01:51,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135624 to 131464. [2023-12-20 18:01:51,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131464 states, 131463 states have (on average 1.1306755512958018) internal successors, (148642), 131463 states have internal predecessors, (148642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:01:51,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131464 states to 131464 states and 148642 transitions. [2023-12-20 18:01:51,717 INFO L78 Accepts]: Start accepts. Automaton has 131464 states and 148642 transitions. Word has length 865 [2023-12-20 18:01:51,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:01:51,718 INFO L495 AbstractCegarLoop]: Abstraction has 131464 states and 148642 transitions. [2023-12-20 18:01:51,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:01:51,744 INFO L276 IsEmpty]: Start isEmpty. Operand 131464 states and 148642 transitions. [2023-12-20 18:01:51,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 967 [2023-12-20 18:01:51,765 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:01:51,766 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 18:01:51,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 18:01:51,972 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,SelfDestructingSolverStorable10 [2023-12-20 18:01:51,973 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:01:51,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:01:51,974 INFO L85 PathProgramCache]: Analyzing trace with hash 119361235, now seen corresponding path program 1 times [2023-12-20 18:01:51,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:01:51,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549925105] [2023-12-20 18:01:51,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:01:51,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:01:52,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:01:53,033 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 614 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2023-12-20 18:01:53,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:01:53,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549925105] [2023-12-20 18:01:53,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549925105] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:01:53,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 18:01:53,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 18:01:53,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114683736] [2023-12-20 18:01:53,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:01:53,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 18:01:53,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:01:53,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 18:01:53,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 18:01:53,038 INFO L87 Difference]: Start difference. First operand 131464 states and 148642 transitions. Second operand has 4 states, 4 states have (on average 188.75) internal successors, (755), 4 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:02:04,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:02:04,636 INFO L93 Difference]: Finished difference Result 384498 states and 435836 transitions. [2023-12-20 18:02:04,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 18:02:04,637 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 188.75) internal successors, (755), 4 states have internal predecessors, (755), 0 states have call successors, (0), 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 966 [2023-12-20 18:02:04,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:02:05,119 INFO L225 Difference]: With dead ends: 384498 [2023-12-20 18:02:05,119 INFO L226 Difference]: Without dead ends: 255765 [2023-12-20 18:02:05,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 18:02:05,164 INFO L413 NwaCegarLoop]: 1087 mSDtfsCounter, 3180 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 9163 mSolverCounterSat, 2517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3180 SdHoareTripleChecker+Valid, 1388 SdHoareTripleChecker+Invalid, 11680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2517 IncrementalHoareTripleChecker+Valid, 9163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2023-12-20 18:02:05,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3180 Valid, 1388 Invalid, 11680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2517 Valid, 9163 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2023-12-20 18:02:05,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255765 states. [2023-12-20 18:02:07,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255765 to 251619. [2023-12-20 18:02:07,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251619 states, 251618 states have (on average 1.1100120023209785) internal successors, (279299), 251618 states have internal predecessors, (279299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:02:08,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251619 states to 251619 states and 279299 transitions. [2023-12-20 18:02:08,199 INFO L78 Accepts]: Start accepts. Automaton has 251619 states and 279299 transitions. Word has length 966 [2023-12-20 18:02:08,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:02:08,199 INFO L495 AbstractCegarLoop]: Abstraction has 251619 states and 279299 transitions. [2023-12-20 18:02:08,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 188.75) internal successors, (755), 4 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:02:08,200 INFO L276 IsEmpty]: Start isEmpty. Operand 251619 states and 279299 transitions. [2023-12-20 18:02:08,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 982 [2023-12-20 18:02:08,208 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:02:08,209 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 18:02:08,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 18:02:08,209 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:02:08,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:02:08,210 INFO L85 PathProgramCache]: Analyzing trace with hash -2073176328, now seen corresponding path program 1 times [2023-12-20 18:02:08,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:02:08,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532232619] [2023-12-20 18:02:08,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:02:08,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:02:08,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:02:08,763 INFO L134 CoverageAnalysis]: Checked inductivity of 999 backedges. 409 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2023-12-20 18:02:08,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:02:08,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532232619] [2023-12-20 18:02:08,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532232619] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:02:08,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 18:02:08,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 18:02:08,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715463410] [2023-12-20 18:02:08,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:02:08,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 18:02:08,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:02:08,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 18:02:08,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 18:02:08,765 INFO L87 Difference]: Start difference. First operand 251619 states and 279299 transitions. Second operand has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:02:19,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:02:19,588 INFO L93 Difference]: Finished difference Result 653401 states and 732708 transitions. [2023-12-20 18:02:19,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 18:02:19,588 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 0 states have call successors, (0), 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 981 [2023-12-20 18:02:19,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:02:20,214 INFO L225 Difference]: With dead ends: 653401 [2023-12-20 18:02:20,214 INFO L226 Difference]: Without dead ends: 404513 [2023-12-20 18:02:20,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 18:02:20,492 INFO L413 NwaCegarLoop]: 931 mSDtfsCounter, 3126 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 6239 mSolverCounterSat, 2561 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3126 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 8800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2561 IncrementalHoareTripleChecker+Valid, 6239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2023-12-20 18:02:20,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3126 Valid, 1133 Invalid, 8800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2561 Valid, 6239 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2023-12-20 18:02:20,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404513 states. [2023-12-20 18:02:25,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404513 to 404502. [2023-12-20 18:02:25,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404502 states, 404501 states have (on average 1.0982395593583205) internal successors, (444239), 404501 states have internal predecessors, (444239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:02:27,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404502 states to 404502 states and 444239 transitions. [2023-12-20 18:02:27,673 INFO L78 Accepts]: Start accepts. Automaton has 404502 states and 444239 transitions. Word has length 981 [2023-12-20 18:02:27,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:02:27,673 INFO L495 AbstractCegarLoop]: Abstraction has 404502 states and 444239 transitions. [2023-12-20 18:02:27,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:02:27,673 INFO L276 IsEmpty]: Start isEmpty. Operand 404502 states and 444239 transitions. [2023-12-20 18:02:27,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1530 [2023-12-20 18:02:27,711 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:02:27,711 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2023-12-20 18:02:27,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 18:02:27,712 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:02:27,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:02:27,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1602524087, now seen corresponding path program 1 times [2023-12-20 18:02:27,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:02:27,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751001532] [2023-12-20 18:02:27,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:02:27,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:02:27,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:02:31,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2557 backedges. 1482 proven. 218 refuted. 0 times theorem prover too weak. 857 trivial. 0 not checked. [2023-12-20 18:02:31,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:02:31,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751001532] [2023-12-20 18:02:31,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751001532] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 18:02:31,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990360535] [2023-12-20 18:02:31,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:02:31,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 18:02:31,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 18:02:31,802 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) [2023-12-20 18:02:31,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 18:02:32,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:02:32,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 1751 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 18:02:32,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 18:02:32,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2557 backedges. 1996 proven. 0 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2023-12-20 18:02:32,526 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 18:02:32,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990360535] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:02:32,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 18:02:32,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-12-20 18:02:32,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089799821] [2023-12-20 18:02:32,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:02:32,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 18:02:32,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:02:32,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 18:02:32,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-20 18:02:32,530 INFO L87 Difference]: Start difference. First operand 404502 states and 444239 transitions. Second operand has 3 states, 3 states have (on average 362.3333333333333) internal successors, (1087), 3 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:02:40,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:02:40,199 INFO L93 Difference]: Finished difference Result 818556 states and 898280 transitions. [2023-12-20 18:02:40,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 18:02:40,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 362.3333333333333) internal successors, (1087), 3 states have internal predecessors, (1087), 0 states have call successors, (0), 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 1529 [2023-12-20 18:02:40,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:02:40,894 INFO L225 Difference]: With dead ends: 818556 [2023-12-20 18:02:40,895 INFO L226 Difference]: Without dead ends: 416785 [2023-12-20 18:02:41,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1534 GetRequests, 1528 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-20 18:02:41,057 INFO L413 NwaCegarLoop]: 2324 mSDtfsCounter, 1473 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 3748 mSolverCounterSat, 1291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 2397 SdHoareTripleChecker+Invalid, 5039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1291 IncrementalHoareTripleChecker+Valid, 3748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-20 18:02:41,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1473 Valid, 2397 Invalid, 5039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1291 Valid, 3748 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-12-20 18:02:41,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416785 states. [2023-12-20 18:02:45,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416785 to 397671. [2023-12-20 18:02:45,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397671 states, 397670 states have (on average 1.0830009807126513) internal successors, (430677), 397670 states have internal predecessors, (430677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:02:46,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397671 states to 397671 states and 430677 transitions. [2023-12-20 18:02:46,270 INFO L78 Accepts]: Start accepts. Automaton has 397671 states and 430677 transitions. Word has length 1529 [2023-12-20 18:02:46,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:02:46,271 INFO L495 AbstractCegarLoop]: Abstraction has 397671 states and 430677 transitions. [2023-12-20 18:02:46,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 362.3333333333333) internal successors, (1087), 3 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:02:46,271 INFO L276 IsEmpty]: Start isEmpty. Operand 397671 states and 430677 transitions. [2023-12-20 18:02:46,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1534 [2023-12-20 18:02:46,324 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:02:46,325 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 18:02:46,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 18:02:46,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 18:02:46,532 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:02:46,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:02:46,532 INFO L85 PathProgramCache]: Analyzing trace with hash 612491068, now seen corresponding path program 1 times [2023-12-20 18:02:46,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:02:46,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863555434] [2023-12-20 18:02:46,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:02:46,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:02:46,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:02:49,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1872 backedges. 1539 proven. 0 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2023-12-20 18:02:49,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:02:49,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863555434] [2023-12-20 18:02:49,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863555434] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:02:49,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 18:02:49,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 18:02:49,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392362310] [2023-12-20 18:02:49,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:02:49,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 18:02:49,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:02:49,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 18:02:49,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 18:02:49,448 INFO L87 Difference]: Start difference. First operand 397671 states and 430677 transitions. Second operand has 3 states, 3 states have (on average 402.3333333333333) internal successors, (1207), 3 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:02:57,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:02:57,044 INFO L93 Difference]: Finished difference Result 794032 states and 859895 transitions. [2023-12-20 18:02:57,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 18:02:57,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 402.3333333333333) internal successors, (1207), 3 states have internal predecessors, (1207), 0 states have call successors, (0), 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 1533 [2023-12-20 18:02:57,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:02:57,677 INFO L225 Difference]: With dead ends: 794032 [2023-12-20 18:02:57,677 INFO L226 Difference]: Without dead ends: 399092 [2023-12-20 18:02:57,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 18:02:57,824 INFO L413 NwaCegarLoop]: 670 mSDtfsCounter, 1201 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 4221 mSolverCounterSat, 1387 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1201 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 5608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1387 IncrementalHoareTripleChecker+Valid, 4221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-12-20 18:02:57,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1201 Valid, 715 Invalid, 5608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1387 Valid, 4221 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-12-20 18:02:58,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399092 states. [2023-12-20 18:03:02,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399092 to 394939. [2023-12-20 18:03:02,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394939 states, 394938 states have (on average 1.0814102466716295) internal successors, (427090), 394938 states have internal predecessors, (427090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:03:03,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394939 states to 394939 states and 427090 transitions. [2023-12-20 18:03:03,307 INFO L78 Accepts]: Start accepts. Automaton has 394939 states and 427090 transitions. Word has length 1533 [2023-12-20 18:03:03,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:03:03,308 INFO L495 AbstractCegarLoop]: Abstraction has 394939 states and 427090 transitions. [2023-12-20 18:03:03,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 402.3333333333333) internal successors, (1207), 3 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:03:03,309 INFO L276 IsEmpty]: Start isEmpty. Operand 394939 states and 427090 transitions. [2023-12-20 18:03:03,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1537 [2023-12-20 18:03:03,338 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:03:03,339 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 18:03:03,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 18:03:03,339 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:03:03,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:03:03,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1983042781, now seen corresponding path program 1 times [2023-12-20 18:03:03,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:03:03,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186274238] [2023-12-20 18:03:03,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:03:03,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:03:03,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:03:07,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1709 backedges. 861 proven. 485 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2023-12-20 18:03:07,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:03:07,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186274238] [2023-12-20 18:03:07,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186274238] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 18:03:07,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197399352] [2023-12-20 18:03:07,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:03:07,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 18:03:07,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 18:03:07,668 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 18:03:07,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 18:03:08,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:03:08,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 1737 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 18:03:08,173 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 18:03:10,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1709 backedges. 1346 proven. 0 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2023-12-20 18:03:10,208 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 18:03:10,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197399352] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:03:10,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 18:03:10,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-12-20 18:03:10,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421959632] [2023-12-20 18:03:10,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:03:10,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 18:03:10,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:03:10,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 18:03:10,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-20 18:03:10,211 INFO L87 Difference]: Start difference. First operand 394939 states and 427090 transitions. Second operand has 4 states, 4 states have (on average 325.0) internal successors, (1300), 3 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:03:18,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:03:18,846 INFO L93 Difference]: Finished difference Result 822646 states and 891414 transitions. [2023-12-20 18:03:18,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 18:03:18,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 325.0) internal successors, (1300), 3 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1536 [2023-12-20 18:03:18,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:03:19,472 INFO L225 Difference]: With dead ends: 822646 [2023-12-20 18:03:19,472 INFO L226 Difference]: Without dead ends: 427691 [2023-12-20 18:03:19,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1541 GetRequests, 1534 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-20 18:03:19,621 INFO L413 NwaCegarLoop]: 758 mSDtfsCounter, 3245 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 5572 mSolverCounterSat, 3200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3245 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 8772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3200 IncrementalHoareTripleChecker+Valid, 5572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-12-20 18:03:19,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3245 Valid, 922 Invalid, 8772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3200 Valid, 5572 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-12-20 18:03:19,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427691 states. [2023-12-20 18:03:23,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427691 to 423594. [2023-12-20 18:03:23,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423594 states, 423593 states have (on average 1.0368844622078268) internal successors, (439217), 423593 states have internal predecessors, (439217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:03:24,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423594 states to 423594 states and 439217 transitions. [2023-12-20 18:03:24,690 INFO L78 Accepts]: Start accepts. Automaton has 423594 states and 439217 transitions. Word has length 1536 [2023-12-20 18:03:24,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:03:24,691 INFO L495 AbstractCegarLoop]: Abstraction has 423594 states and 439217 transitions. [2023-12-20 18:03:24,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 325.0) internal successors, (1300), 3 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:03:24,691 INFO L276 IsEmpty]: Start isEmpty. Operand 423594 states and 439217 transitions. [2023-12-20 18:03:24,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1546 [2023-12-20 18:03:24,717 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:03:24,717 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 18:03:24,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 18:03:24,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 18:03:24,921 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:03:24,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:03:24,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1281233297, now seen corresponding path program 1 times [2023-12-20 18:03:24,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:03:24,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99271087] [2023-12-20 18:03:24,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:03:24,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:03:25,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:03:25,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1803 backedges. 1569 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2023-12-20 18:03:25,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:03:25,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99271087] [2023-12-20 18:03:25,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99271087] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:03:25,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 18:03:25,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 18:03:25,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081193308] [2023-12-20 18:03:25,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:03:25,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 18:03:25,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:03:25,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 18:03:25,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 18:03:25,866 INFO L87 Difference]: Start difference. First operand 423594 states and 439217 transitions. Second operand has 3 states, 3 states have (on average 437.6666666666667) internal successors, (1313), 3 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:03:31,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:03:31,823 INFO L93 Difference]: Finished difference Result 838991 states and 870048 transitions. [2023-12-20 18:03:31,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 18:03:31,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 437.6666666666667) internal successors, (1313), 3 states have internal predecessors, (1313), 0 states have call successors, (0), 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 1545 [2023-12-20 18:03:31,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:03:32,546 INFO L225 Difference]: With dead ends: 838991 [2023-12-20 18:03:32,546 INFO L226 Difference]: Without dead ends: 418128 [2023-12-20 18:03:33,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 18:03:33,069 INFO L413 NwaCegarLoop]: 2308 mSDtfsCounter, 1132 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 3608 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 2475 SdHoareTripleChecker+Invalid, 3847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 3608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-20 18:03:33,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1132 Valid, 2475 Invalid, 3847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 3608 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-20 18:03:33,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418128 states. [2023-12-20 18:03:37,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418128 to 404476. [2023-12-20 18:03:38,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404476 states, 404475 states have (on average 1.0335694418690895) internal successors, (418053), 404475 states have internal predecessors, (418053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:03:38,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404476 states to 404476 states and 418053 transitions. [2023-12-20 18:03:38,870 INFO L78 Accepts]: Start accepts. Automaton has 404476 states and 418053 transitions. Word has length 1545 [2023-12-20 18:03:38,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:03:38,870 INFO L495 AbstractCegarLoop]: Abstraction has 404476 states and 418053 transitions. [2023-12-20 18:03:38,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 437.6666666666667) internal successors, (1313), 3 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:03:38,871 INFO L276 IsEmpty]: Start isEmpty. Operand 404476 states and 418053 transitions. [2023-12-20 18:03:38,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1552 [2023-12-20 18:03:38,897 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:03:38,898 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 18:03:38,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 18:03:38,898 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:03:38,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:03:38,899 INFO L85 PathProgramCache]: Analyzing trace with hash -884731256, now seen corresponding path program 1 times [2023-12-20 18:03:38,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:03:38,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882095120] [2023-12-20 18:03:38,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:03:38,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:03:39,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:03:42,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1912 backedges. 743 proven. 1165 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 18:03:42,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:03:42,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882095120] [2023-12-20 18:03:42,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882095120] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 18:03:42,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994468375] [2023-12-20 18:03:42,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:03:42,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 18:03:42,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 18:03:42,040 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 18:03:42,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process