/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 01:06:24,338 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 01:06:24,381 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 01:06:24,384 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 01:06:24,385 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 01:06:24,412 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 01:06:24,412 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 01:06:24,413 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 01:06:24,413 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 01:06:24,416 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 01:06:24,416 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 01:06:24,417 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 01:06:24,417 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 01:06:24,418 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 01:06:24,418 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 01:06:24,418 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 01:06:24,418 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 01:06:24,418 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 01:06:24,418 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 01:06:24,419 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 01:06:24,419 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 01:06:24,420 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 01:06:24,420 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 01:06:24,420 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 01:06:24,420 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 01:06:24,420 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 01:06:24,420 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 01:06:24,421 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 01:06:24,421 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 01:06:24,421 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 01:06:24,422 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 01:06:24,422 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 01:06:24,422 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:06:24,422 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 01:06:24,422 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 01:06:24,422 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 01:06:24,422 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 01:06:24,422 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 01:06:24,423 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 01:06:24,423 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 01:06:24,423 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 01:06:24,423 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 01:06:24,423 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 01:06:24,423 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 01:06:24,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 01:06:24,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 01:06:24,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 01:06:24,630 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 01:06:24,630 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 01:06:24,631 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label09.c [2023-12-19 01:06:25,666 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 01:06:26,417 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 01:06:26,418 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label09.c [2023-12-19 01:06:26,446 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbff4c43e/f45fca93658d46fd88506dd2628f45a1/FLAG652faf21b [2023-12-19 01:06:26,461 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbff4c43e/f45fca93658d46fd88506dd2628f45a1 [2023-12-19 01:06:26,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 01:06:26,465 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 01:06:26,467 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 01:06:26,467 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 01:06:26,470 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 01:06:26,471 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:06:26" (1/1) ... [2023-12-19 01:06:26,472 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15e2903f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:06:26, skipping insertion in model container [2023-12-19 01:06:26,472 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:06:26" (1/1) ... [2023-12-19 01:06:26,605 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 01:06:26,860 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label09.c[15510,15523] [2023-12-19 01:06:26,916 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label09.c[23258,23271] [2023-12-19 01:06:27,397 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:06:27,406 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 01:06:27,444 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label09.c[15510,15523] [2023-12-19 01:06:27,452 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label09.c[23258,23271] [2023-12-19 01:06:27,763 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:06:27,781 INFO L206 MainTranslator]: Completed translation [2023-12-19 01:06:27,782 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:06:27 WrapperNode [2023-12-19 01:06:27,782 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 01:06:27,783 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 01:06:27,783 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 01:06:27,783 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 01:06:27,788 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:06:27" (1/1) ... [2023-12-19 01:06:27,833 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:06:27" (1/1) ... [2023-12-19 01:06:28,106 INFO L138 Inliner]: procedures = 38, calls = 23, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 5151 [2023-12-19 01:06:28,107 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 01:06:28,107 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 01:06:28,107 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 01:06:28,107 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 01:06:28,115 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:06:27" (1/1) ... [2023-12-19 01:06:28,115 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:06:27" (1/1) ... [2023-12-19 01:06:28,158 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:06:27" (1/1) ... [2023-12-19 01:06:28,277 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 01:06:28,277 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:06:27" (1/1) ... [2023-12-19 01:06:28,277 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:06:27" (1/1) ... [2023-12-19 01:06:28,369 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:06:27" (1/1) ... [2023-12-19 01:06:28,394 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:06:27" (1/1) ... [2023-12-19 01:06:28,413 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:06:27" (1/1) ... [2023-12-19 01:06:28,427 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:06:27" (1/1) ... [2023-12-19 01:06:28,482 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 01:06:28,483 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 01:06:28,483 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 01:06:28,484 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 01:06:28,484 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:06:27" (1/1) ... [2023-12-19 01:06:28,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:06:28,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:06:28,507 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 01:06:28,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 01:06:28,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 01:06:28,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 01:06:28,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 01:06:28,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 01:06:28,635 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 01:06:28,637 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 01:06:31,644 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 01:06:31,687 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 01:06:31,687 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-19 01:06:31,688 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:06:31 BoogieIcfgContainer [2023-12-19 01:06:31,688 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 01:06:31,689 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 01:06:31,689 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 01:06:31,691 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 01:06:31,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 01:06:26" (1/3) ... [2023-12-19 01:06:31,692 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ac1c473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:06:31, skipping insertion in model container [2023-12-19 01:06:31,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:06:27" (2/3) ... [2023-12-19 01:06:31,692 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ac1c473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:06:31, skipping insertion in model container [2023-12-19 01:06:31,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:06:31" (3/3) ... [2023-12-19 01:06:31,693 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label09.c [2023-12-19 01:06:31,705 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 01:06:31,705 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-19 01:06:31,763 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 01:06:31,769 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;@7de535db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 01:06:31,769 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-19 01:06:31,777 INFO L276 IsEmpty]: Start isEmpty. Operand has 851 states, 848 states have (on average 1.9728773584905661) internal successors, (1673), 850 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:31,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-19 01:06:31,785 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:06:31,785 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:06:31,786 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:06:31,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:06:31,791 INFO L85 PathProgramCache]: Analyzing trace with hash -150308239, now seen corresponding path program 1 times [2023-12-19 01:06:31,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:06:31,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257323288] [2023-12-19 01:06:31,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:31,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:06:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:31,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:06:31,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:06:31,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257323288] [2023-12-19 01:06:31,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257323288] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:06:31,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:06:31,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 01:06:31,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782777120] [2023-12-19 01:06:31,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:06:31,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 01:06:31,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:06:32,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 01:06:32,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 01:06:32,024 INFO L87 Difference]: Start difference. First operand has 851 states, 848 states have (on average 1.9728773584905661) internal successors, (1673), 850 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:32,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:06:32,104 INFO L93 Difference]: Finished difference Result 1657 states and 3259 transitions. [2023-12-19 01:06:32,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 01:06:32,113 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-12-19 01:06:32,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:06:32,131 INFO L225 Difference]: With dead ends: 1657 [2023-12-19 01:06:32,131 INFO L226 Difference]: Without dead ends: 847 [2023-12-19 01:06:32,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 01:06:32,142 INFO L413 NwaCegarLoop]: 1601 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1601 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:06:32,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1601 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:06:32,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2023-12-19 01:06:32,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 847. [2023-12-19 01:06:32,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 845 states have (on average 1.8958579881656805) internal successors, (1602), 846 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:32,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1602 transitions. [2023-12-19 01:06:32,217 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1602 transitions. Word has length 23 [2023-12-19 01:06:32,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:06:32,218 INFO L495 AbstractCegarLoop]: Abstraction has 847 states and 1602 transitions. [2023-12-19 01:06:32,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:32,218 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1602 transitions. [2023-12-19 01:06:32,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-19 01:06:32,219 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:06:32,219 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:06:32,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 01:06:32,220 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:06:32,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:06:32,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1839251981, now seen corresponding path program 1 times [2023-12-19 01:06:32,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:06:32,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749131457] [2023-12-19 01:06:32,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:32,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:06:32,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:32,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:06:32,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:06:32,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749131457] [2023-12-19 01:06:32,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749131457] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:06:32,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:06:32,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:06:32,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951940092] [2023-12-19 01:06:32,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:06:32,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:06:32,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:06:32,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:06:32,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:06:32,480 INFO L87 Difference]: Start difference. First operand 847 states and 1602 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:32,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:06:32,599 INFO L93 Difference]: Finished difference Result 899 states and 1684 transitions. [2023-12-19 01:06:32,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 01:06:32,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-12-19 01:06:32,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:06:32,603 INFO L225 Difference]: With dead ends: 899 [2023-12-19 01:06:32,603 INFO L226 Difference]: Without dead ends: 847 [2023-12-19 01:06:32,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:06:32,605 INFO L413 NwaCegarLoop]: 1599 mSDtfsCounter, 0 mSDsluCounter, 3154 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4753 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:06:32,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4753 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:06:32,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2023-12-19 01:06:32,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 847. [2023-12-19 01:06:32,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 845 states have (on average 1.8485207100591716) internal successors, (1562), 846 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:32,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1562 transitions. [2023-12-19 01:06:32,617 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1562 transitions. Word has length 23 [2023-12-19 01:06:32,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:06:32,617 INFO L495 AbstractCegarLoop]: Abstraction has 847 states and 1562 transitions. [2023-12-19 01:06:32,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:32,618 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1562 transitions. [2023-12-19 01:06:32,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-19 01:06:32,623 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:06:32,623 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:06:32,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 01:06:32,623 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:06:32,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:06:32,629 INFO L85 PathProgramCache]: Analyzing trace with hash -138572409, now seen corresponding path program 1 times [2023-12-19 01:06:32,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:06:32,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281026799] [2023-12-19 01:06:32,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:32,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:06:32,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:32,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:06:32,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:06:32,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281026799] [2023-12-19 01:06:32,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281026799] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:06:32,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:06:32,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:06:32,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913961467] [2023-12-19 01:06:32,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:06:32,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:06:32,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:06:32,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:06:32,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:06:32,806 INFO L87 Difference]: Start difference. First operand 847 states and 1562 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:33,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:06:33,044 INFO L93 Difference]: Finished difference Result 1435 states and 2510 transitions. [2023-12-19 01:06:33,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 01:06:33,045 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-19 01:06:33,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:06:33,050 INFO L225 Difference]: With dead ends: 1435 [2023-12-19 01:06:33,050 INFO L226 Difference]: Without dead ends: 1386 [2023-12-19 01:06:33,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:06:33,053 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 9829 mSDsluCounter, 1486 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9829 SdHoareTripleChecker+Valid, 3039 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:06:33,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9829 Valid, 3039 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:06:33,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2023-12-19 01:06:33,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 894. [2023-12-19 01:06:33,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 892 states have (on average 1.836322869955157) internal successors, (1638), 893 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:33,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1638 transitions. [2023-12-19 01:06:33,075 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1638 transitions. Word has length 62 [2023-12-19 01:06:33,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:06:33,079 INFO L495 AbstractCegarLoop]: Abstraction has 894 states and 1638 transitions. [2023-12-19 01:06:33,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:33,079 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1638 transitions. [2023-12-19 01:06:33,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-19 01:06:33,081 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:06:33,081 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:06:33,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 01:06:33,081 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:06:33,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:06:33,083 INFO L85 PathProgramCache]: Analyzing trace with hash -157852617, now seen corresponding path program 1 times [2023-12-19 01:06:33,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:06:33,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459298395] [2023-12-19 01:06:33,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:33,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:06:33,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:33,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:06:33,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:06:33,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459298395] [2023-12-19 01:06:33,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459298395] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:06:33,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:06:33,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:06:33,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823601294] [2023-12-19 01:06:33,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:06:33,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:06:33,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:06:33,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:06:33,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:06:33,175 INFO L87 Difference]: Start difference. First operand 894 states and 1638 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:33,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:06:33,208 INFO L93 Difference]: Finished difference Result 1075 states and 1929 transitions. [2023-12-19 01:06:33,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:06:33,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2023-12-19 01:06:33,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:06:33,212 INFO L225 Difference]: With dead ends: 1075 [2023-12-19 01:06:33,212 INFO L226 Difference]: Without dead ends: 979 [2023-12-19 01:06:33,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:06:33,218 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 1490 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:06:33,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1626 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:06:33,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2023-12-19 01:06:33,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 975. [2023-12-19 01:06:33,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 973 states have (on average 1.8150051387461459) internal successors, (1766), 974 states have internal predecessors, (1766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:33,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1766 transitions. [2023-12-19 01:06:33,234 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1766 transitions. Word has length 64 [2023-12-19 01:06:33,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:06:33,235 INFO L495 AbstractCegarLoop]: Abstraction has 975 states and 1766 transitions. [2023-12-19 01:06:33,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:33,235 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1766 transitions. [2023-12-19 01:06:33,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-19 01:06:33,236 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:06:33,236 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:06:33,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 01:06:33,238 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:06:33,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:06:33,238 INFO L85 PathProgramCache]: Analyzing trace with hash -155707665, now seen corresponding path program 1 times [2023-12-19 01:06:33,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:06:33,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34072164] [2023-12-19 01:06:33,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:33,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:06:33,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:33,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:06:33,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:06:33,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34072164] [2023-12-19 01:06:33,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34072164] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:06:33,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:06:33,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:06:33,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991309789] [2023-12-19 01:06:33,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:06:33,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:06:33,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:06:33,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:06:33,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:06:33,523 INFO L87 Difference]: Start difference. First operand 975 states and 1766 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:33,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:06:33,726 INFO L93 Difference]: Finished difference Result 1154 states and 2050 transitions. [2023-12-19 01:06:33,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 01:06:33,727 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2023-12-19 01:06:33,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:06:33,731 INFO L225 Difference]: With dead ends: 1154 [2023-12-19 01:06:33,731 INFO L226 Difference]: Without dead ends: 977 [2023-12-19 01:06:33,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2023-12-19 01:06:33,732 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 6012 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6012 SdHoareTripleChecker+Valid, 1927 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:06:33,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6012 Valid, 1927 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:06:33,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2023-12-19 01:06:33,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 975. [2023-12-19 01:06:33,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 973 states have (on average 1.8129496402877698) internal successors, (1764), 974 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:33,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1764 transitions. [2023-12-19 01:06:33,746 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1764 transitions. Word has length 64 [2023-12-19 01:06:33,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:06:33,748 INFO L495 AbstractCegarLoop]: Abstraction has 975 states and 1764 transitions. [2023-12-19 01:06:33,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:33,748 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1764 transitions. [2023-12-19 01:06:33,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-19 01:06:33,749 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:06:33,749 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:06:33,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 01:06:33,749 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:06:33,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:06:33,750 INFO L85 PathProgramCache]: Analyzing trace with hash -660670881, now seen corresponding path program 1 times [2023-12-19 01:06:33,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:06:33,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458828003] [2023-12-19 01:06:33,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:33,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:06:33,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:33,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:06:33,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:06:33,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458828003] [2023-12-19 01:06:33,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458828003] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:06:33,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:06:33,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:06:33,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121620446] [2023-12-19 01:06:33,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:06:33,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:06:33,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:06:33,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:06:33,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:06:33,919 INFO L87 Difference]: Start difference. First operand 975 states and 1764 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:33,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:06:33,945 INFO L93 Difference]: Finished difference Result 983 states and 1773 transitions. [2023-12-19 01:06:33,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 01:06:33,946 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2023-12-19 01:06:33,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:06:33,950 INFO L225 Difference]: With dead ends: 983 [2023-12-19 01:06:33,950 INFO L226 Difference]: Without dead ends: 981 [2023-12-19 01:06:33,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:06:33,951 INFO L413 NwaCegarLoop]: 1558 mSDtfsCounter, 1 mSDsluCounter, 3108 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4666 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:06:33,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4666 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:06:33,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2023-12-19 01:06:33,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 979. [2023-12-19 01:06:33,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 979 states, 977 states have (on average 1.8085977482088025) internal successors, (1767), 978 states have internal predecessors, (1767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:33,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 1767 transitions. [2023-12-19 01:06:33,968 INFO L78 Accepts]: Start accepts. Automaton has 979 states and 1767 transitions. Word has length 65 [2023-12-19 01:06:33,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:06:33,968 INFO L495 AbstractCegarLoop]: Abstraction has 979 states and 1767 transitions. [2023-12-19 01:06:33,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:33,968 INFO L276 IsEmpty]: Start isEmpty. Operand 979 states and 1767 transitions. [2023-12-19 01:06:33,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-19 01:06:33,968 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:06:33,969 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:06:33,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 01:06:33,969 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:06:33,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:06:33,969 INFO L85 PathProgramCache]: Analyzing trace with hash -347651057, now seen corresponding path program 1 times [2023-12-19 01:06:33,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:06:33,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138377354] [2023-12-19 01:06:33,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:33,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:06:33,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:34,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:06:34,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:06:34,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138377354] [2023-12-19 01:06:34,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138377354] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:06:34,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:06:34,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:06:34,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553391778] [2023-12-19 01:06:34,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:06:34,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:06:34,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:06:34,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:06:34,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:06:34,011 INFO L87 Difference]: Start difference. First operand 979 states and 1767 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:34,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:06:34,035 INFO L93 Difference]: Finished difference Result 1325 states and 2307 transitions. [2023-12-19 01:06:34,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:06:34,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-12-19 01:06:34,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:06:34,039 INFO L225 Difference]: With dead ends: 1325 [2023-12-19 01:06:34,039 INFO L226 Difference]: Without dead ends: 1144 [2023-12-19 01:06:34,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:06:34,040 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 1503 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1503 SdHoareTripleChecker+Valid, 1691 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:06:34,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1503 Valid, 1691 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:06:34,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1144 states. [2023-12-19 01:06:34,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1144 to 1142. [2023-12-19 01:06:34,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1142 states, 1140 states have (on average 1.7701754385964912) internal successors, (2018), 1141 states have internal predecessors, (2018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:34,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 2018 transitions. [2023-12-19 01:06:34,065 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 2018 transitions. Word has length 66 [2023-12-19 01:06:34,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:06:34,066 INFO L495 AbstractCegarLoop]: Abstraction has 1142 states and 2018 transitions. [2023-12-19 01:06:34,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:34,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 2018 transitions. [2023-12-19 01:06:34,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-19 01:06:34,067 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:06:34,067 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:06:34,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 01:06:34,067 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:06:34,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:06:34,067 INFO L85 PathProgramCache]: Analyzing trace with hash -307707121, now seen corresponding path program 1 times [2023-12-19 01:06:34,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:06:34,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446422574] [2023-12-19 01:06:34,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:34,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:06:34,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:34,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:06:34,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:06:34,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446422574] [2023-12-19 01:06:34,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446422574] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:06:34,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:06:34,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:06:34,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951666774] [2023-12-19 01:06:34,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:06:34,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:06:34,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:06:34,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:06:34,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:06:34,106 INFO L87 Difference]: Start difference. First operand 1142 states and 2018 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:34,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:06:34,175 INFO L93 Difference]: Finished difference Result 1798 states and 3032 transitions. [2023-12-19 01:06:34,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:06:34,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-12-19 01:06:34,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:06:34,179 INFO L225 Difference]: With dead ends: 1798 [2023-12-19 01:06:34,180 INFO L226 Difference]: Without dead ends: 1454 [2023-12-19 01:06:34,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:06:34,180 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 1501 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1501 SdHoareTripleChecker+Valid, 1693 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:06:34,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1501 Valid, 1693 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:06:34,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1454 states. [2023-12-19 01:06:34,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1454 to 1452. [2023-12-19 01:06:34,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 1450 states have (on average 1.7158620689655173) internal successors, (2488), 1451 states have internal predecessors, (2488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:34,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 2488 transitions. [2023-12-19 01:06:34,201 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 2488 transitions. Word has length 66 [2023-12-19 01:06:34,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:06:34,201 INFO L495 AbstractCegarLoop]: Abstraction has 1452 states and 2488 transitions. [2023-12-19 01:06:34,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:34,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 2488 transitions. [2023-12-19 01:06:34,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-19 01:06:34,202 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:06:34,202 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:06:34,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 01:06:34,202 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:06:34,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:06:34,202 INFO L85 PathProgramCache]: Analyzing trace with hash -933363185, now seen corresponding path program 1 times [2023-12-19 01:06:34,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:06:34,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426591167] [2023-12-19 01:06:34,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:34,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:06:34,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:34,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:06:34,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:06:34,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426591167] [2023-12-19 01:06:34,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426591167] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:06:34,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:06:34,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:06:34,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074492488] [2023-12-19 01:06:34,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:06:34,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:06:34,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:06:34,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:06:34,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:06:34,234 INFO L87 Difference]: Start difference. First operand 1452 states and 2488 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:34,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:06:34,263 INFO L93 Difference]: Finished difference Result 2696 states and 4386 transitions. [2023-12-19 01:06:34,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:06:34,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-12-19 01:06:34,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:06:34,269 INFO L225 Difference]: With dead ends: 2696 [2023-12-19 01:06:34,269 INFO L226 Difference]: Without dead ends: 2042 [2023-12-19 01:06:34,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:06:34,270 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 1499 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:06:34,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1499 Valid, 1695 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:06:34,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2042 states. [2023-12-19 01:06:34,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2042 to 2040. [2023-12-19 01:06:34,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2040 states, 2038 states have (on average 1.6506378802747792) internal successors, (3364), 2039 states have internal predecessors, (3364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:34,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2040 states to 2040 states and 3364 transitions. [2023-12-19 01:06:34,302 INFO L78 Accepts]: Start accepts. Automaton has 2040 states and 3364 transitions. Word has length 66 [2023-12-19 01:06:34,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:06:34,302 INFO L495 AbstractCegarLoop]: Abstraction has 2040 states and 3364 transitions. [2023-12-19 01:06:34,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:34,302 INFO L276 IsEmpty]: Start isEmpty. Operand 2040 states and 3364 transitions. [2023-12-19 01:06:34,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-19 01:06:34,302 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:06:34,302 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:06:34,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 01:06:34,303 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:06:34,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:06:34,303 INFO L85 PathProgramCache]: Analyzing trace with hash -44629745, now seen corresponding path program 1 times [2023-12-19 01:06:34,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:06:34,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921403447] [2023-12-19 01:06:34,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:34,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:06:34,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:34,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:06:34,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:06:34,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921403447] [2023-12-19 01:06:34,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921403447] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:06:34,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:06:34,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:06:34,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718987832] [2023-12-19 01:06:34,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:06:34,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:06:34,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:06:34,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:06:34,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:06:34,334 INFO L87 Difference]: Start difference. First operand 2040 states and 3364 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:34,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:06:34,375 INFO L93 Difference]: Finished difference Result 4396 states and 6902 transitions. [2023-12-19 01:06:34,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:06:34,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-12-19 01:06:34,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:06:34,384 INFO L225 Difference]: With dead ends: 4396 [2023-12-19 01:06:34,384 INFO L226 Difference]: Without dead ends: 3154 [2023-12-19 01:06:34,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:06:34,386 INFO L413 NwaCegarLoop]: 1598 mSDtfsCounter, 1497 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1497 SdHoareTripleChecker+Valid, 1697 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:06:34,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1497 Valid, 1697 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:06:34,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3154 states. [2023-12-19 01:06:34,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3154 to 3152. [2023-12-19 01:06:34,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3152 states, 3150 states have (on average 1.5834920634920635) internal successors, (4988), 3151 states have internal predecessors, (4988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:34,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3152 states to 3152 states and 4988 transitions. [2023-12-19 01:06:34,442 INFO L78 Accepts]: Start accepts. Automaton has 3152 states and 4988 transitions. Word has length 66 [2023-12-19 01:06:34,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:06:34,442 INFO L495 AbstractCegarLoop]: Abstraction has 3152 states and 4988 transitions. [2023-12-19 01:06:34,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:34,442 INFO L276 IsEmpty]: Start isEmpty. Operand 3152 states and 4988 transitions. [2023-12-19 01:06:34,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-19 01:06:34,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:06:34,443 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:06:34,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 01:06:34,443 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:06:34,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:06:34,443 INFO L85 PathProgramCache]: Analyzing trace with hash -79067889, now seen corresponding path program 1 times [2023-12-19 01:06:34,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:06:34,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611461869] [2023-12-19 01:06:34,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:34,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:06:34,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:34,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:06:34,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:06:34,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611461869] [2023-12-19 01:06:34,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611461869] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:06:34,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:06:34,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:06:34,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537414419] [2023-12-19 01:06:34,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:06:34,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:06:34,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:06:34,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:06:34,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:06:34,476 INFO L87 Difference]: Start difference. First operand 3152 states and 4988 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:34,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:06:34,539 INFO L93 Difference]: Finished difference Result 7604 states and 11550 transitions. [2023-12-19 01:06:34,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:06:34,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-12-19 01:06:34,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:06:34,560 INFO L225 Difference]: With dead ends: 7604 [2023-12-19 01:06:34,560 INFO L226 Difference]: Without dead ends: 5250 [2023-12-19 01:06:34,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:06:34,563 INFO L413 NwaCegarLoop]: 1614 mSDtfsCounter, 1505 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 1697 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:06:34,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1505 Valid, 1697 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:06:34,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5250 states. [2023-12-19 01:06:34,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5250 to 5248. [2023-12-19 01:06:34,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5248 states, 5246 states have (on average 1.5211589782691575) internal successors, (7980), 5247 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:34,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5248 states to 5248 states and 7980 transitions. [2023-12-19 01:06:34,661 INFO L78 Accepts]: Start accepts. Automaton has 5248 states and 7980 transitions. Word has length 66 [2023-12-19 01:06:34,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:06:34,661 INFO L495 AbstractCegarLoop]: Abstraction has 5248 states and 7980 transitions. [2023-12-19 01:06:34,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:34,661 INFO L276 IsEmpty]: Start isEmpty. Operand 5248 states and 7980 transitions. [2023-12-19 01:06:34,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-19 01:06:34,662 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:06:34,662 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:06:34,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 01:06:34,662 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:06:34,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:06:34,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1661618325, now seen corresponding path program 1 times [2023-12-19 01:06:34,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:06:34,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203489050] [2023-12-19 01:06:34,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:34,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:06:34,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:34,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:06:34,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:06:34,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203489050] [2023-12-19 01:06:34,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203489050] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:06:34,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:06:34,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 01:06:34,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226060101] [2023-12-19 01:06:34,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:06:34,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:06:34,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:06:34,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:06:34,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:06:34,700 INFO L87 Difference]: Start difference. First operand 5248 states and 7980 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:37,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:06:37,706 INFO L93 Difference]: Finished difference Result 6752 states and 10853 transitions. [2023-12-19 01:06:37,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:06:37,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-12-19 01:06:37,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:06:37,721 INFO L225 Difference]: With dead ends: 6752 [2023-12-19 01:06:37,721 INFO L226 Difference]: Without dead ends: 5999 [2023-12-19 01:06:37,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:06:37,723 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 858 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 01:06:37,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 595 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 01:06:37,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5999 states. [2023-12-19 01:06:37,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5999 to 5999. [2023-12-19 01:06:37,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5999 states, 5997 states have (on average 1.4939136234784058) internal successors, (8959), 5998 states have internal predecessors, (8959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:37,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5999 states to 5999 states and 8959 transitions. [2023-12-19 01:06:37,853 INFO L78 Accepts]: Start accepts. Automaton has 5999 states and 8959 transitions. Word has length 66 [2023-12-19 01:06:37,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:06:37,854 INFO L495 AbstractCegarLoop]: Abstraction has 5999 states and 8959 transitions. [2023-12-19 01:06:37,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:37,854 INFO L276 IsEmpty]: Start isEmpty. Operand 5999 states and 8959 transitions. [2023-12-19 01:06:37,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-19 01:06:37,855 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:06:37,855 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:06:37,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 01:06:37,855 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:06:37,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:06:37,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1522612916, now seen corresponding path program 1 times [2023-12-19 01:06:37,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:06:37,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767882333] [2023-12-19 01:06:37,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:37,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:06:37,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:37,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:06:37,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:06:37,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767882333] [2023-12-19 01:06:37,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767882333] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:06:37,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:06:37,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:06:37,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80262652] [2023-12-19 01:06:37,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:06:37,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:06:37,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:06:37,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:06:37,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:06:37,887 INFO L87 Difference]: Start difference. First operand 5999 states and 8959 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:37,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:06:37,974 INFO L93 Difference]: Finished difference Result 10614 states and 15813 transitions. [2023-12-19 01:06:37,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:06:37,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2023-12-19 01:06:37,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:06:38,001 INFO L225 Difference]: With dead ends: 10614 [2023-12-19 01:06:38,002 INFO L226 Difference]: Without dead ends: 8115 [2023-12-19 01:06:38,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:06:38,007 INFO L413 NwaCegarLoop]: 1619 mSDtfsCounter, 1504 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:06:38,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1698 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:06:38,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8115 states. [2023-12-19 01:06:38,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8115 to 8113. [2023-12-19 01:06:38,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8113 states, 8111 states have (on average 1.4795956108987793) internal successors, (12001), 8112 states have internal predecessors, (12001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:38,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8113 states to 8113 states and 12001 transitions. [2023-12-19 01:06:38,162 INFO L78 Accepts]: Start accepts. Automaton has 8113 states and 12001 transitions. Word has length 68 [2023-12-19 01:06:38,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:06:38,163 INFO L495 AbstractCegarLoop]: Abstraction has 8113 states and 12001 transitions. [2023-12-19 01:06:38,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:38,163 INFO L276 IsEmpty]: Start isEmpty. Operand 8113 states and 12001 transitions. [2023-12-19 01:06:38,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-19 01:06:38,165 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:06:38,165 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:06:38,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 01:06:38,165 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:06:38,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:06:38,166 INFO L85 PathProgramCache]: Analyzing trace with hash 443992391, now seen corresponding path program 1 times [2023-12-19 01:06:38,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:06:38,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59132018] [2023-12-19 01:06:38,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:38,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:06:38,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:38,290 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 01:06:38,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:06:38,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59132018] [2023-12-19 01:06:38,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59132018] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:06:38,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:06:38,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:06:38,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349393170] [2023-12-19 01:06:38,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:06:38,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:06:38,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:06:38,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:06:38,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:06:38,292 INFO L87 Difference]: Start difference. First operand 8113 states and 12001 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:38,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:06:38,875 INFO L93 Difference]: Finished difference Result 48831 states and 71112 transitions. [2023-12-19 01:06:38,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 01:06:38,876 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 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 86 [2023-12-19 01:06:38,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:06:38,944 INFO L225 Difference]: With dead ends: 48831 [2023-12-19 01:06:38,944 INFO L226 Difference]: Without dead ends: 42269 [2023-12-19 01:06:38,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-19 01:06:38,963 INFO L413 NwaCegarLoop]: 1634 mSDtfsCounter, 8090 mSDsluCounter, 2205 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8090 SdHoareTripleChecker+Valid, 3839 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:06:38,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8090 Valid, 3839 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:06:38,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42269 states. [2023-12-19 01:06:39,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42269 to 14673. [2023-12-19 01:06:39,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14673 states, 14671 states have (on average 1.4614545702406108) internal successors, (21441), 14672 states have internal predecessors, (21441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:39,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14673 states to 14673 states and 21441 transitions. [2023-12-19 01:06:39,411 INFO L78 Accepts]: Start accepts. Automaton has 14673 states and 21441 transitions. Word has length 86 [2023-12-19 01:06:39,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:06:39,411 INFO L495 AbstractCegarLoop]: Abstraction has 14673 states and 21441 transitions. [2023-12-19 01:06:39,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:39,411 INFO L276 IsEmpty]: Start isEmpty. Operand 14673 states and 21441 transitions. [2023-12-19 01:06:39,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-19 01:06:39,413 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:06:39,413 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:06:39,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 01:06:39,414 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:06:39,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:06:39,414 INFO L85 PathProgramCache]: Analyzing trace with hash 483936327, now seen corresponding path program 1 times [2023-12-19 01:06:39,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:06:39,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208791041] [2023-12-19 01:06:39,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:39,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:06:39,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:39,585 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-19 01:06:39,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:06:39,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208791041] [2023-12-19 01:06:39,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208791041] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:06:39,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:06:39,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:06:39,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058034108] [2023-12-19 01:06:39,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:06:39,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:06:39,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:06:39,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:06:39,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:06:39,586 INFO L87 Difference]: Start difference. First operand 14673 states and 21441 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:40,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:06:40,268 INFO L93 Difference]: Finished difference Result 55391 states and 80552 transitions. [2023-12-19 01:06:40,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 01:06:40,269 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 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 86 [2023-12-19 01:06:40,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:06:40,343 INFO L225 Difference]: With dead ends: 55391 [2023-12-19 01:06:40,343 INFO L226 Difference]: Without dead ends: 48829 [2023-12-19 01:06:40,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-19 01:06:40,368 INFO L413 NwaCegarLoop]: 1631 mSDtfsCounter, 8138 mSDsluCounter, 2135 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8138 SdHoareTripleChecker+Valid, 3766 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:06:40,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8138 Valid, 3766 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:06:40,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48829 states. [2023-12-19 01:06:40,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48829 to 24529. [2023-12-19 01:06:41,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24529 states, 24527 states have (on average 1.4482407143148368) internal successors, (35521), 24528 states have internal predecessors, (35521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:41,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24529 states to 24529 states and 35521 transitions. [2023-12-19 01:06:41,057 INFO L78 Accepts]: Start accepts. Automaton has 24529 states and 35521 transitions. Word has length 86 [2023-12-19 01:06:41,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:06:41,057 INFO L495 AbstractCegarLoop]: Abstraction has 24529 states and 35521 transitions. [2023-12-19 01:06:41,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:41,057 INFO L276 IsEmpty]: Start isEmpty. Operand 24529 states and 35521 transitions. [2023-12-19 01:06:41,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-19 01:06:41,061 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:06:41,061 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:06:41,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 01:06:41,061 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:06:41,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:06:41,062 INFO L85 PathProgramCache]: Analyzing trace with hash -141719737, now seen corresponding path program 1 times [2023-12-19 01:06:41,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:06:41,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254159075] [2023-12-19 01:06:41,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:41,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:06:41,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:41,207 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-19 01:06:41,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:06:41,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254159075] [2023-12-19 01:06:41,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254159075] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:06:41,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:06:41,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:06:41,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464886349] [2023-12-19 01:06:41,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:06:41,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:06:41,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:06:41,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:06:41,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:06:41,208 INFO L87 Difference]: Start difference. First operand 24529 states and 35521 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:42,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:06:42,300 INFO L93 Difference]: Finished difference Result 61951 states and 89992 transitions. [2023-12-19 01:06:42,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 01:06:42,301 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 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 86 [2023-12-19 01:06:42,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:06:42,386 INFO L225 Difference]: With dead ends: 61951 [2023-12-19 01:06:42,386 INFO L226 Difference]: Without dead ends: 55389 [2023-12-19 01:06:42,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-19 01:06:42,411 INFO L413 NwaCegarLoop]: 1628 mSDtfsCounter, 8187 mSDsluCounter, 2140 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8187 SdHoareTripleChecker+Valid, 3768 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:06:42,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8187 Valid, 3768 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:06:42,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55389 states. [2023-12-19 01:06:43,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55389 to 31089. [2023-12-19 01:06:43,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31089 states, 31087 states have (on average 1.4462958793064624) internal successors, (44961), 31088 states have internal predecessors, (44961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:43,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31089 states to 31089 states and 44961 transitions. [2023-12-19 01:06:43,286 INFO L78 Accepts]: Start accepts. Automaton has 31089 states and 44961 transitions. Word has length 86 [2023-12-19 01:06:43,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:06:43,287 INFO L495 AbstractCegarLoop]: Abstraction has 31089 states and 44961 transitions. [2023-12-19 01:06:43,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:43,287 INFO L276 IsEmpty]: Start isEmpty. Operand 31089 states and 44961 transitions. [2023-12-19 01:06:43,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-19 01:06:43,289 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:06:43,289 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:06:43,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 01:06:43,290 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:06:43,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:06:43,290 INFO L85 PathProgramCache]: Analyzing trace with hash 747013703, now seen corresponding path program 1 times [2023-12-19 01:06:43,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:06:43,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942750183] [2023-12-19 01:06:43,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:43,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:06:43,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:43,442 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-19 01:06:43,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:06:43,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942750183] [2023-12-19 01:06:43,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942750183] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:06:43,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:06:43,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:06:43,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385922152] [2023-12-19 01:06:43,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:06:43,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:06:43,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:06:43,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:06:43,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:06:43,444 INFO L87 Difference]: Start difference. First operand 31089 states and 44961 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:44,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:06:44,473 INFO L93 Difference]: Finished difference Result 68511 states and 99432 transitions. [2023-12-19 01:06:44,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 01:06:44,474 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 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 86 [2023-12-19 01:06:44,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:06:44,573 INFO L225 Difference]: With dead ends: 68511 [2023-12-19 01:06:44,573 INFO L226 Difference]: Without dead ends: 61949 [2023-12-19 01:06:44,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-19 01:06:44,592 INFO L413 NwaCegarLoop]: 1633 mSDtfsCounter, 8094 mSDsluCounter, 2220 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8094 SdHoareTripleChecker+Valid, 3853 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:06:44,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8094 Valid, 3853 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:06:44,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61949 states. [2023-12-19 01:06:45,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61949 to 37649. [2023-12-19 01:06:45,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37649 states, 37647 states have (on average 1.4450288203575319) internal successors, (54401), 37648 states have internal predecessors, (54401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:45,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37649 states to 37649 states and 54401 transitions. [2023-12-19 01:06:45,590 INFO L78 Accepts]: Start accepts. Automaton has 37649 states and 54401 transitions. Word has length 86 [2023-12-19 01:06:45,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:06:45,591 INFO L495 AbstractCegarLoop]: Abstraction has 37649 states and 54401 transitions. [2023-12-19 01:06:45,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:45,592 INFO L276 IsEmpty]: Start isEmpty. Operand 37649 states and 54401 transitions. [2023-12-19 01:06:45,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-19 01:06:45,598 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:06:45,598 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:06:45,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 01:06:45,598 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:06:45,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:06:45,599 INFO L85 PathProgramCache]: Analyzing trace with hash 712575559, now seen corresponding path program 1 times [2023-12-19 01:06:45,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:06:45,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485723409] [2023-12-19 01:06:45,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:45,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:06:45,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:45,715 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 01:06:45,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:06:45,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485723409] [2023-12-19 01:06:45,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485723409] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:06:45,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:06:45,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:06:45,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001213657] [2023-12-19 01:06:45,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:06:45,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:06:45,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:06:45,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:06:45,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:06:45,717 INFO L87 Difference]: Start difference. First operand 37649 states and 54401 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:47,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:06:47,172 INFO L93 Difference]: Finished difference Result 75071 states and 108872 transitions. [2023-12-19 01:06:47,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 01:06:47,173 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 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 86 [2023-12-19 01:06:47,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:06:47,270 INFO L225 Difference]: With dead ends: 75071 [2023-12-19 01:06:47,270 INFO L226 Difference]: Without dead ends: 68509 [2023-12-19 01:06:47,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-19 01:06:47,290 INFO L413 NwaCegarLoop]: 1634 mSDtfsCounter, 8030 mSDsluCounter, 2372 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8030 SdHoareTripleChecker+Valid, 4006 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:06:47,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8030 Valid, 4006 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:06:47,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68509 states. [2023-12-19 01:06:48,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68509 to 44209. [2023-12-19 01:06:48,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44209 states, 44207 states have (on average 1.4441378062297827) internal successors, (63841), 44208 states have internal predecessors, (63841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:48,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44209 states to 44209 states and 63841 transitions. [2023-12-19 01:06:48,473 INFO L78 Accepts]: Start accepts. Automaton has 44209 states and 63841 transitions. Word has length 86 [2023-12-19 01:06:48,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:06:48,473 INFO L495 AbstractCegarLoop]: Abstraction has 44209 states and 63841 transitions. [2023-12-19 01:06:48,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:48,474 INFO L276 IsEmpty]: Start isEmpty. Operand 44209 states and 63841 transitions. [2023-12-19 01:06:48,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-19 01:06:48,477 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:06:48,478 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:06:48,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 01:06:48,479 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:06:48,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:06:48,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1343316655, now seen corresponding path program 1 times [2023-12-19 01:06:48,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:06:48,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652195747] [2023-12-19 01:06:48,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:48,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:06:48,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:48,548 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:06:48,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:06:48,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652195747] [2023-12-19 01:06:48,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652195747] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:06:48,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:06:48,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:06:48,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498070275] [2023-12-19 01:06:48,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:06:48,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:06:48,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:06:48,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:06:48,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:06:48,550 INFO L87 Difference]: Start difference. First operand 44209 states and 63841 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:49,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:06:49,244 INFO L93 Difference]: Finished difference Result 74186 states and 107545 transitions. [2023-12-19 01:06:49,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:06:49,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2023-12-19 01:06:49,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:06:49,285 INFO L225 Difference]: With dead ends: 74186 [2023-12-19 01:06:49,285 INFO L226 Difference]: Without dead ends: 31528 [2023-12-19 01:06:49,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:06:49,322 INFO L413 NwaCegarLoop]: 1607 mSDtfsCounter, 58 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 3152 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:06:49,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 3152 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:06:49,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31528 states. [2023-12-19 01:06:50,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31528 to 31526. [2023-12-19 01:06:50,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31526 states, 31524 states have (on average 1.4512752188808526) internal successors, (45750), 31525 states have internal predecessors, (45750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:50,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31526 states to 31526 states and 45750 transitions. [2023-12-19 01:06:50,238 INFO L78 Accepts]: Start accepts. Automaton has 31526 states and 45750 transitions. Word has length 88 [2023-12-19 01:06:50,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:06:50,238 INFO L495 AbstractCegarLoop]: Abstraction has 31526 states and 45750 transitions. [2023-12-19 01:06:50,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:50,238 INFO L276 IsEmpty]: Start isEmpty. Operand 31526 states and 45750 transitions. [2023-12-19 01:06:50,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-19 01:06:50,240 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:06:50,241 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:06:50,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 01:06:50,241 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:06:50,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:06:50,241 INFO L85 PathProgramCache]: Analyzing trace with hash 2082755052, now seen corresponding path program 1 times [2023-12-19 01:06:50,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:06:50,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985217131] [2023-12-19 01:06:50,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:50,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:06:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:50,380 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 01:06:50,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:06:50,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985217131] [2023-12-19 01:06:50,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985217131] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:06:50,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:06:50,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:06:50,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982602544] [2023-12-19 01:06:50,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:06:50,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:06:50,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:06:50,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:06:50,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:06:50,382 INFO L87 Difference]: Start difference. First operand 31526 states and 45750 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:51,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:06:51,638 INFO L93 Difference]: Finished difference Result 59188 states and 86077 transitions. [2023-12-19 01:06:51,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 01:06:51,647 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 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 88 [2023-12-19 01:06:51,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:06:51,719 INFO L225 Difference]: With dead ends: 59188 [2023-12-19 01:06:51,719 INFO L226 Difference]: Without dead ends: 54578 [2023-12-19 01:06:51,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-19 01:06:51,726 INFO L413 NwaCegarLoop]: 1625 mSDtfsCounter, 8038 mSDsluCounter, 2341 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8038 SdHoareTripleChecker+Valid, 3966 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:06:51,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8038 Valid, 3966 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:06:51,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54578 states. [2023-12-19 01:06:52,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54578 to 36134. [2023-12-19 01:06:52,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36134 states, 36132 states have (on average 1.4504040739510684) internal successors, (52406), 36133 states have internal predecessors, (52406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:52,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36134 states to 36134 states and 52406 transitions. [2023-12-19 01:06:52,694 INFO L78 Accepts]: Start accepts. Automaton has 36134 states and 52406 transitions. Word has length 88 [2023-12-19 01:06:52,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:06:52,695 INFO L495 AbstractCegarLoop]: Abstraction has 36134 states and 52406 transitions. [2023-12-19 01:06:52,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:52,695 INFO L276 IsEmpty]: Start isEmpty. Operand 36134 states and 52406 transitions. [2023-12-19 01:06:52,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-19 01:06:52,697 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:06:52,697 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:06:52,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 01:06:52,698 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:06:52,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:06:52,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1555080975, now seen corresponding path program 1 times [2023-12-19 01:06:52,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:06:52,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129835930] [2023-12-19 01:06:52,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:52,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:06:52,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:52,760 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:06:52,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:06:52,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129835930] [2023-12-19 01:06:52,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129835930] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:06:52,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:06:52,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:06:52,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94265282] [2023-12-19 01:06:52,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:06:52,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:06:52,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:06:52,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:06:52,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:06:52,762 INFO L87 Difference]: Start difference. First operand 36134 states and 52406 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:53,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:06:53,127 INFO L93 Difference]: Finished difference Result 53418 states and 77368 transitions. [2023-12-19 01:06:53,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:06:53,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2023-12-19 01:06:53,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:06:53,145 INFO L225 Difference]: With dead ends: 53418 [2023-12-19 01:06:53,145 INFO L226 Difference]: Without dead ends: 18856 [2023-12-19 01:06:53,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:06:53,165 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 53 mSDsluCounter, 1537 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 3137 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:06:53,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 3137 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:06:53,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18856 states. [2023-12-19 01:06:53,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18856 to 18854. [2023-12-19 01:06:53,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18854 states, 18852 states have (on average 1.4431360067897305) internal successors, (27206), 18853 states have internal predecessors, (27206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:53,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18854 states to 18854 states and 27206 transitions. [2023-12-19 01:06:53,709 INFO L78 Accepts]: Start accepts. Automaton has 18854 states and 27206 transitions. Word has length 89 [2023-12-19 01:06:53,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:06:53,709 INFO L495 AbstractCegarLoop]: Abstraction has 18854 states and 27206 transitions. [2023-12-19 01:06:53,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:53,709 INFO L276 IsEmpty]: Start isEmpty. Operand 18854 states and 27206 transitions. [2023-12-19 01:06:53,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-19 01:06:53,711 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:06:53,711 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:06:53,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 01:06:53,711 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:06:53,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:06:53,712 INFO L85 PathProgramCache]: Analyzing trace with hash 433774111, now seen corresponding path program 1 times [2023-12-19 01:06:53,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:06:53,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27596331] [2023-12-19 01:06:53,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:53,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:06:53,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:53,783 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:06:53,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:06:53,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27596331] [2023-12-19 01:06:53,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27596331] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:06:53,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:06:53,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:06:53,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992938695] [2023-12-19 01:06:53,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:06:53,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:06:53,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:06:53,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:06:53,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:06:53,785 INFO L87 Difference]: Start difference. First operand 18854 states and 27206 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:54,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:06:54,026 INFO L93 Difference]: Finished difference Result 27498 states and 39568 transitions. [2023-12-19 01:06:54,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:06:54,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2023-12-19 01:06:54,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:06:54,036 INFO L225 Difference]: With dead ends: 27498 [2023-12-19 01:06:54,037 INFO L226 Difference]: Without dead ends: 10216 [2023-12-19 01:06:54,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:06:54,048 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 50 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 3122 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:06:54,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 3122 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:06:54,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10216 states. [2023-12-19 01:06:54,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10216 to 10214. [2023-12-19 01:06:54,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10214 states, 10212 states have (on average 1.4420289855072463) internal successors, (14726), 10213 states have internal predecessors, (14726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:54,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10214 states to 10214 states and 14726 transitions. [2023-12-19 01:06:54,316 INFO L78 Accepts]: Start accepts. Automaton has 10214 states and 14726 transitions. Word has length 91 [2023-12-19 01:06:54,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:06:54,316 INFO L495 AbstractCegarLoop]: Abstraction has 10214 states and 14726 transitions. [2023-12-19 01:06:54,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:54,316 INFO L276 IsEmpty]: Start isEmpty. Operand 10214 states and 14726 transitions. [2023-12-19 01:06:54,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-19 01:06:54,318 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:06:54,318 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:06:54,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 01:06:54,318 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:06:54,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:06:54,319 INFO L85 PathProgramCache]: Analyzing trace with hash 475149517, now seen corresponding path program 1 times [2023-12-19 01:06:54,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:06:54,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790667833] [2023-12-19 01:06:54,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:54,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:06:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:54,374 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:06:54,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:06:54,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790667833] [2023-12-19 01:06:54,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790667833] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:06:54,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:06:54,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:06:54,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811144589] [2023-12-19 01:06:54,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:06:54,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:06:54,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:06:54,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:06:54,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:06:54,376 INFO L87 Difference]: Start difference. First operand 10214 states and 14726 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:54,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:06:54,475 INFO L93 Difference]: Finished difference Result 14538 states and 20848 transitions. [2023-12-19 01:06:54,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:06:54,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2023-12-19 01:06:54,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:06:54,481 INFO L225 Difference]: With dead ends: 14538 [2023-12-19 01:06:54,481 INFO L226 Difference]: Without dead ends: 5896 [2023-12-19 01:06:54,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:06:54,486 INFO L413 NwaCegarLoop]: 1586 mSDtfsCounter, 47 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 3107 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:06:54,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 3107 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:06:54,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5896 states. [2023-12-19 01:06:54,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5896 to 5894. [2023-12-19 01:06:54,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5894 states, 5892 states have (on average 1.4504412763068568) internal successors, (8546), 5893 states have internal predecessors, (8546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:54,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5894 states to 5894 states and 8546 transitions. [2023-12-19 01:06:54,592 INFO L78 Accepts]: Start accepts. Automaton has 5894 states and 8546 transitions. Word has length 93 [2023-12-19 01:06:54,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:06:54,592 INFO L495 AbstractCegarLoop]: Abstraction has 5894 states and 8546 transitions. [2023-12-19 01:06:54,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:54,592 INFO L276 IsEmpty]: Start isEmpty. Operand 5894 states and 8546 transitions. [2023-12-19 01:06:54,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-19 01:06:54,593 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:06:54,593 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:06:54,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 01:06:54,595 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:06:54,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:06:54,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1948500741, now seen corresponding path program 1 times [2023-12-19 01:06:54,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:06:54,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819629977] [2023-12-19 01:06:54,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:54,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:06:54,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:54,658 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:06:54,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:06:54,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819629977] [2023-12-19 01:06:54,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819629977] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:06:54,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:06:54,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:06:54,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707971188] [2023-12-19 01:06:54,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:06:54,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:06:54,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:06:54,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:06:54,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:06:54,660 INFO L87 Difference]: Start difference. First operand 5894 states and 8546 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:54,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:06:54,718 INFO L93 Difference]: Finished difference Result 8058 states and 11578 transitions. [2023-12-19 01:06:54,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:06:54,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2023-12-19 01:06:54,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:06:54,722 INFO L225 Difference]: With dead ends: 8058 [2023-12-19 01:06:54,722 INFO L226 Difference]: Without dead ends: 3736 [2023-12-19 01:06:54,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:06:54,725 INFO L413 NwaCegarLoop]: 1579 mSDtfsCounter, 44 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 3092 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:06:54,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 3092 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:06:54,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3736 states. [2023-12-19 01:06:54,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3736 to 3734. [2023-12-19 01:06:54,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3734 states, 3732 states have (on average 1.469989281886388) internal successors, (5486), 3733 states have internal predecessors, (5486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:54,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3734 states to 3734 states and 5486 transitions. [2023-12-19 01:06:54,843 INFO L78 Accepts]: Start accepts. Automaton has 3734 states and 5486 transitions. Word has length 95 [2023-12-19 01:06:54,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:06:54,843 INFO L495 AbstractCegarLoop]: Abstraction has 3734 states and 5486 transitions. [2023-12-19 01:06:54,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:54,843 INFO L276 IsEmpty]: Start isEmpty. Operand 3734 states and 5486 transitions. [2023-12-19 01:06:54,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-19 01:06:54,844 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:06:54,844 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:06:54,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 01:06:54,844 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:06:54,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:06:54,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1337448105, now seen corresponding path program 1 times [2023-12-19 01:06:54,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:06:54,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466118819] [2023-12-19 01:06:54,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:54,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:06:54,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:54,899 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:06:54,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:06:54,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466118819] [2023-12-19 01:06:54,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466118819] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:06:54,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:06:54,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:06:54,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494063940] [2023-12-19 01:06:54,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:06:54,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:06:54,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:06:54,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:06:54,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:06:54,901 INFO L87 Difference]: Start difference. First operand 3734 states and 5486 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:54,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:06:54,940 INFO L93 Difference]: Finished difference Result 4818 states and 6988 transitions. [2023-12-19 01:06:54,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:06:54,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2023-12-19 01:06:54,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:06:54,943 INFO L225 Difference]: With dead ends: 4818 [2023-12-19 01:06:54,943 INFO L226 Difference]: Without dead ends: 2656 [2023-12-19 01:06:54,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:06:54,945 INFO L413 NwaCegarLoop]: 1572 mSDtfsCounter, 41 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3077 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:06:54,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3077 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:06:54,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2656 states. [2023-12-19 01:06:54,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2656 to 2654. [2023-12-19 01:06:54,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2654 states, 2652 states have (on average 1.4973604826546003) internal successors, (3971), 2653 states have internal predecessors, (3971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:54,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2654 states to 2654 states and 3971 transitions. [2023-12-19 01:06:54,984 INFO L78 Accepts]: Start accepts. Automaton has 2654 states and 3971 transitions. Word has length 97 [2023-12-19 01:06:54,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:06:54,984 INFO L495 AbstractCegarLoop]: Abstraction has 2654 states and 3971 transitions. [2023-12-19 01:06:54,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:54,984 INFO L276 IsEmpty]: Start isEmpty. Operand 2654 states and 3971 transitions. [2023-12-19 01:06:54,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-19 01:06:54,985 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:06:54,985 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:06:54,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-19 01:06:54,985 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:06:54,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:06:54,985 INFO L85 PathProgramCache]: Analyzing trace with hash 54256087, now seen corresponding path program 1 times [2023-12-19 01:06:54,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:06:54,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783883484] [2023-12-19 01:06:54,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:54,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:06:55,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:55,637 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:06:55,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:06:55,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783883484] [2023-12-19 01:06:55,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783883484] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:06:55,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673283006] [2023-12-19 01:06:55,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:55,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:06:55,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:06:55,640 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:06:55,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 01:06:55,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:55,765 INFO L262 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 01:06:55,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:06:55,909 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 01:06:55,909 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:06:56,044 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 01:06:56,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673283006] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:06:56,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:06:56,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4, 4] total 17 [2023-12-19 01:06:56,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324347279] [2023-12-19 01:06:56,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:06:56,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-19 01:06:56,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:06:56,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-19 01:06:56,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:06:56,045 INFO L87 Difference]: Start difference. First operand 2654 states and 3971 transitions. Second operand has 17 states, 17 states have (on average 16.647058823529413) internal successors, (283), 17 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:58,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:06:58,338 INFO L93 Difference]: Finished difference Result 11485 states and 15913 transitions. [2023-12-19 01:06:58,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-19 01:06:58,339 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 16.647058823529413) internal successors, (283), 17 states have internal predecessors, (283), 0 states have call successors, (0), 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 99 [2023-12-19 01:06:58,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:06:58,348 INFO L225 Difference]: With dead ends: 11485 [2023-12-19 01:06:58,348 INFO L226 Difference]: Without dead ends: 10403 [2023-12-19 01:06:58,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1091 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=720, Invalid=3062, Unknown=0, NotChecked=0, Total=3782 [2023-12-19 01:06:58,352 INFO L413 NwaCegarLoop]: 1527 mSDtfsCounter, 17920 mSDsluCounter, 4973 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17920 SdHoareTripleChecker+Valid, 6500 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:06:58,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17920 Valid, 6500 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 01:06:58,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10403 states. [2023-12-19 01:06:58,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10403 to 10059. [2023-12-19 01:06:58,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10059 states, 10057 states have (on average 1.3570647310331112) internal successors, (13648), 10058 states have internal predecessors, (13648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:58,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10059 states to 10059 states and 13648 transitions. [2023-12-19 01:06:58,593 INFO L78 Accepts]: Start accepts. Automaton has 10059 states and 13648 transitions. Word has length 99 [2023-12-19 01:06:58,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:06:58,593 INFO L495 AbstractCegarLoop]: Abstraction has 10059 states and 13648 transitions. [2023-12-19 01:06:58,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 16.647058823529413) internal successors, (283), 17 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:06:58,593 INFO L276 IsEmpty]: Start isEmpty. Operand 10059 states and 13648 transitions. [2023-12-19 01:06:58,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 01:06:58,594 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:06:58,594 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:06:58,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 01:06:58,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-19 01:06:58,801 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:06:58,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:06:58,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1164591634, now seen corresponding path program 1 times [2023-12-19 01:06:58,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:06:58,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309272285] [2023-12-19 01:06:58,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:58,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:06:58,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:59,079 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:06:59,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:06:59,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309272285] [2023-12-19 01:06:59,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309272285] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:06:59,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137457733] [2023-12-19 01:06:59,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:06:59,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:06:59,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:06:59,080 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:06:59,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 01:06:59,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:06:59,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 01:06:59,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:06:59,619 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:06:59,620 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:07:00,612 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:07:00,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137457733] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:07:00,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:07:00,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 27 [2023-12-19 01:07:00,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713016824] [2023-12-19 01:07:00,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:07:00,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-19 01:07:00,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:07:00,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-19 01:07:00,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2023-12-19 01:07:00,614 INFO L87 Difference]: Start difference. First operand 10059 states and 13648 transitions. Second operand has 27 states, 27 states have (on average 9.666666666666666) internal successors, (261), 27 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:07:01,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:07:01,584 INFO L93 Difference]: Finished difference Result 25057 states and 33084 transitions. [2023-12-19 01:07:01,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 01:07:01,597 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 9.666666666666666) internal successors, (261), 27 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-19 01:07:01,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:07:01,614 INFO L225 Difference]: With dead ends: 25057 [2023-12-19 01:07:01,614 INFO L226 Difference]: Without dead ends: 16890 [2023-12-19 01:07:01,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=329, Invalid=1231, Unknown=0, NotChecked=0, Total=1560 [2023-12-19 01:07:01,624 INFO L413 NwaCegarLoop]: 1525 mSDtfsCounter, 15531 mSDsluCounter, 9548 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15531 SdHoareTripleChecker+Valid, 11073 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:07:01,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15531 Valid, 11073 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 01:07:01,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16890 states. [2023-12-19 01:07:02,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16890 to 16374. [2023-12-19 01:07:02,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16374 states, 16372 states have (on average 1.32799902272172) internal successors, (21742), 16373 states have internal predecessors, (21742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:07:02,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16374 states to 16374 states and 21742 transitions. [2023-12-19 01:07:02,061 INFO L78 Accepts]: Start accepts. Automaton has 16374 states and 21742 transitions. Word has length 100 [2023-12-19 01:07:02,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:07:02,061 INFO L495 AbstractCegarLoop]: Abstraction has 16374 states and 21742 transitions. [2023-12-19 01:07:02,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 9.666666666666666) internal successors, (261), 27 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:07:02,061 INFO L276 IsEmpty]: Start isEmpty. Operand 16374 states and 21742 transitions. [2023-12-19 01:07:02,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 01:07:02,062 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:07:02,062 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:07:02,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 01:07:02,263 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,SelfDestructingSolverStorable26 [2023-12-19 01:07:02,264 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:07:02,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:07:02,264 INFO L85 PathProgramCache]: Analyzing trace with hash -531612434, now seen corresponding path program 1 times [2023-12-19 01:07:02,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:07:02,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413902934] [2023-12-19 01:07:02,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:07:02,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:07:02,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:07:02,987 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:07:02,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:07:02,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413902934] [2023-12-19 01:07:02,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413902934] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:07:02,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235353815] [2023-12-19 01:07:02,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:07:02,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:07:02,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:07:02,988 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:07:02,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 01:07:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:07:03,101 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 01:07:03,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:07:03,592 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:07:03,593 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:07:04,221 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:07:04,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235353815] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:07:04,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:07:04,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 25 [2023-12-19 01:07:04,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83885520] [2023-12-19 01:07:04,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:07:04,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-19 01:07:04,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:07:04,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-19 01:07:04,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2023-12-19 01:07:04,223 INFO L87 Difference]: Start difference. First operand 16374 states and 21742 transitions. Second operand has 26 states, 26 states have (on average 10.26923076923077) internal successors, (267), 25 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:07:05,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:07:05,072 INFO L93 Difference]: Finished difference Result 29519 states and 38684 transitions. [2023-12-19 01:07:05,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:07:05,073 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 10.26923076923077) internal successors, (267), 25 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-19 01:07:05,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:07:05,091 INFO L225 Difference]: With dead ends: 29519 [2023-12-19 01:07:05,092 INFO L226 Difference]: Without dead ends: 17410 [2023-12-19 01:07:05,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=290, Invalid=1042, Unknown=0, NotChecked=0, Total=1332 [2023-12-19 01:07:05,102 INFO L413 NwaCegarLoop]: 1525 mSDtfsCounter, 10669 mSDsluCounter, 6443 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10669 SdHoareTripleChecker+Valid, 7968 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:07:05,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10669 Valid, 7968 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 01:07:05,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17410 states. [2023-12-19 01:07:05,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17410 to 15342. [2023-12-19 01:07:05,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15342 states, 15340 states have (on average 1.3097131681877445) internal successors, (20091), 15341 states have internal predecessors, (20091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:07:05,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15342 states to 15342 states and 20091 transitions. [2023-12-19 01:07:05,528 INFO L78 Accepts]: Start accepts. Automaton has 15342 states and 20091 transitions. Word has length 100 [2023-12-19 01:07:05,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:07:05,528 INFO L495 AbstractCegarLoop]: Abstraction has 15342 states and 20091 transitions. [2023-12-19 01:07:05,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 10.26923076923077) internal successors, (267), 25 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:07:05,528 INFO L276 IsEmpty]: Start isEmpty. Operand 15342 states and 20091 transitions. [2023-12-19 01:07:05,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 01:07:05,529 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:07:05,529 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:07:05,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-19 01:07:05,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:07:05,739 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:07:05,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:07:05,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1054216644, now seen corresponding path program 1 times [2023-12-19 01:07:05,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:07:05,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965242076] [2023-12-19 01:07:05,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:07:05,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:07:05,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:07:06,017 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:07:06,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:07:06,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965242076] [2023-12-19 01:07:06,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965242076] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:07:06,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834344242] [2023-12-19 01:07:06,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:07:06,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:07:06,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:07:06,020 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:07:06,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 01:07:06,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:07:06,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 01:07:06,139 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:07:06,671 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:07:06,672 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:07:07,388 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:07:07,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834344242] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:07:07,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:07:07,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-12-19 01:07:07,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321052979] [2023-12-19 01:07:07,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:07:07,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-19 01:07:07,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:07:07,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-19 01:07:07,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2023-12-19 01:07:07,390 INFO L87 Difference]: Start difference. First operand 15342 states and 20091 transitions. Second operand has 28 states, 28 states have (on average 8.821428571428571) internal successors, (247), 28 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:07:08,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:07:08,849 INFO L93 Difference]: Finished difference Result 44266 states and 57049 transitions. [2023-12-19 01:07:08,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-19 01:07:08,850 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 8.821428571428571) internal successors, (247), 28 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-19 01:07:08,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:07:08,881 INFO L225 Difference]: With dead ends: 44266 [2023-12-19 01:07:08,882 INFO L226 Difference]: Without dead ends: 30856 [2023-12-19 01:07:08,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=428, Invalid=1378, Unknown=0, NotChecked=0, Total=1806 [2023-12-19 01:07:08,892 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 11014 mSDsluCounter, 8348 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11014 SdHoareTripleChecker+Valid, 9899 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:07:08,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11014 Valid, 9899 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 01:07:08,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30856 states. [2023-12-19 01:07:09,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30856 to 29476. [2023-12-19 01:07:09,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29476 states, 29474 states have (on average 1.2833683924815091) internal successors, (37826), 29475 states have internal predecessors, (37826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:07:09,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29476 states to 29476 states and 37826 transitions. [2023-12-19 01:07:09,750 INFO L78 Accepts]: Start accepts. Automaton has 29476 states and 37826 transitions. Word has length 100 [2023-12-19 01:07:09,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:07:09,750 INFO L495 AbstractCegarLoop]: Abstraction has 29476 states and 37826 transitions. [2023-12-19 01:07:09,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 8.821428571428571) internal successors, (247), 28 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:07:09,751 INFO L276 IsEmpty]: Start isEmpty. Operand 29476 states and 37826 transitions. [2023-12-19 01:07:09,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-19 01:07:09,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:07:09,752 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:07:09,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 01:07:09,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-19 01:07:09,958 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:07:09,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:07:09,959 INFO L85 PathProgramCache]: Analyzing trace with hash -410646267, now seen corresponding path program 1 times [2023-12-19 01:07:09,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:07:09,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334861380] [2023-12-19 01:07:09,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:07:09,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:07:09,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:07:10,200 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:07:10,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:07:10,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334861380] [2023-12-19 01:07:10,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334861380] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:07:10,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897741910] [2023-12-19 01:07:10,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:07:10,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:07:10,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:07:10,201 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) [2023-12-19 01:07:10,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 01:07:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:07:10,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 01:07:10,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:07:10,803 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:07:10,803 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:07:11,489 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:07:11,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897741910] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:07:11,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:07:11,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-12-19 01:07:11,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938138976] [2023-12-19 01:07:11,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:07:11,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-19 01:07:11,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:07:11,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-19 01:07:11,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=624, Unknown=0, NotChecked=0, Total=756 [2023-12-19 01:07:11,491 INFO L87 Difference]: Start difference. First operand 29476 states and 37826 transitions. Second operand has 28 states, 28 states have (on average 9.214285714285714) internal successors, (258), 28 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:07:13,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:07:13,640 INFO L93 Difference]: Finished difference Result 87744 states and 111614 transitions. [2023-12-19 01:07:13,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-19 01:07:13,641 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 9.214285714285714) internal successors, (258), 28 states have internal predecessors, (258), 0 states have call successors, (0), 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 101 [2023-12-19 01:07:13,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:07:13,714 INFO L225 Difference]: With dead ends: 87744 [2023-12-19 01:07:13,715 INFO L226 Difference]: Without dead ends: 60696 [2023-12-19 01:07:13,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=411, Invalid=1395, Unknown=0, NotChecked=0, Total=1806 [2023-12-19 01:07:13,745 INFO L413 NwaCegarLoop]: 1546 mSDtfsCounter, 10858 mSDsluCounter, 6658 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10858 SdHoareTripleChecker+Valid, 8204 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:07:13,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10858 Valid, 8204 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 01:07:13,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60696 states. [2023-12-19 01:07:15,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60696 to 57980. [2023-12-19 01:07:15,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57980 states, 57978 states have (on average 1.26349649867191) internal successors, (73255), 57979 states have internal predecessors, (73255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:07:15,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57980 states to 57980 states and 73255 transitions. [2023-12-19 01:07:15,674 INFO L78 Accepts]: Start accepts. Automaton has 57980 states and 73255 transitions. Word has length 101 [2023-12-19 01:07:15,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:07:15,674 INFO L495 AbstractCegarLoop]: Abstraction has 57980 states and 73255 transitions. [2023-12-19 01:07:15,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.214285714285714) internal successors, (258), 28 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:07:15,674 INFO L276 IsEmpty]: Start isEmpty. Operand 57980 states and 73255 transitions. [2023-12-19 01:07:15,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-19 01:07:15,675 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:07:15,676 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:07:15,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 01:07:15,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:07:15,877 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:07:15,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:07:15,877 INFO L85 PathProgramCache]: Analyzing trace with hash -761997076, now seen corresponding path program 1 times [2023-12-19 01:07:15,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:07:15,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41798174] [2023-12-19 01:07:15,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:07:15,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:07:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:07:16,149 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:07:16,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:07:16,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41798174] [2023-12-19 01:07:16,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41798174] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:07:16,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236868312] [2023-12-19 01:07:16,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:07:16,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:07:16,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:07:16,151 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) [2023-12-19 01:07:16,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 01:07:16,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:07:16,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-19 01:07:16,260 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:07:17,115 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:07:17,115 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:07:17,808 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:07:17,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236868312] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:07:17,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:07:17,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 30 [2023-12-19 01:07:17,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844604970] [2023-12-19 01:07:17,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:07:17,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-19 01:07:17,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:07:17,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-19 01:07:17,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=773, Unknown=0, NotChecked=0, Total=870 [2023-12-19 01:07:17,810 INFO L87 Difference]: Start difference. First operand 57980 states and 73255 transitions. Second operand has 30 states, 30 states have (on average 9.766666666666667) internal successors, (293), 30 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:07:25,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:07:25,203 INFO L93 Difference]: Finished difference Result 175188 states and 217857 transitions. [2023-12-19 01:07:25,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-19 01:07:25,203 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 9.766666666666667) internal successors, (293), 30 states have internal predecessors, (293), 0 states have call successors, (0), 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 102 [2023-12-19 01:07:25,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:07:25,372 INFO L225 Difference]: With dead ends: 175188 [2023-12-19 01:07:25,373 INFO L226 Difference]: Without dead ends: 125566 [2023-12-19 01:07:25,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1421 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1143, Invalid=4709, Unknown=0, NotChecked=0, Total=5852 [2023-12-19 01:07:25,419 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 17248 mSDsluCounter, 18465 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17248 SdHoareTripleChecker+Valid, 20001 SdHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:07:25,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17248 Valid, 20001 Invalid, 1161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1117 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 01:07:25,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125566 states. [2023-12-19 01:07:29,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125566 to 107870. [2023-12-19 01:07:29,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107870 states, 107868 states have (on average 1.2445025401416545) internal successors, (134242), 107869 states have internal predecessors, (134242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:07:29,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107870 states to 107870 states and 134242 transitions. [2023-12-19 01:07:29,701 INFO L78 Accepts]: Start accepts. Automaton has 107870 states and 134242 transitions. Word has length 102 [2023-12-19 01:07:29,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:07:29,702 INFO L495 AbstractCegarLoop]: Abstraction has 107870 states and 134242 transitions. [2023-12-19 01:07:29,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 9.766666666666667) internal successors, (293), 30 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:07:29,702 INFO L276 IsEmpty]: Start isEmpty. Operand 107870 states and 134242 transitions. [2023-12-19 01:07:29,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-19 01:07:29,704 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:07:29,704 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:07:29,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 01:07:29,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:07:29,915 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:07:29,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:07:29,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1937262771, now seen corresponding path program 1 times [2023-12-19 01:07:29,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:07:29,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035409909] [2023-12-19 01:07:29,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:07:29,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:07:29,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:07:30,184 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:07:30,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:07:30,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035409909] [2023-12-19 01:07:30,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035409909] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:07:30,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930707794] [2023-12-19 01:07:30,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:07:30,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:07:30,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:07:30,186 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) [2023-12-19 01:07:30,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 01:07:30,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:07:30,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 01:07:30,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:07:30,853 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:07:30,853 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:07:31,878 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:07:31,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930707794] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:07:31,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:07:31,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 29 [2023-12-19 01:07:31,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775330532] [2023-12-19 01:07:31,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:07:31,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-19 01:07:31,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:07:31,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-19 01:07:31,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2023-12-19 01:07:31,885 INFO L87 Difference]: Start difference. First operand 107870 states and 134242 transitions. Second operand has 29 states, 29 states have (on average 9.344827586206897) internal successors, (271), 29 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:07:40,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:07:40,580 INFO L93 Difference]: Finished difference Result 320364 states and 397576 transitions. [2023-12-19 01:07:40,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-19 01:07:40,580 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 9.344827586206897) internal successors, (271), 29 states have internal predecessors, (271), 0 states have call successors, (0), 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 103 [2023-12-19 01:07:40,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:07:40,884 INFO L225 Difference]: With dead ends: 320364 [2023-12-19 01:07:40,885 INFO L226 Difference]: Without dead ends: 226272 [2023-12-19 01:07:40,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=480, Invalid=1412, Unknown=0, NotChecked=0, Total=1892 [2023-12-19 01:07:40,945 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 11394 mSDsluCounter, 7958 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11394 SdHoareTripleChecker+Valid, 9498 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:07:40,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11394 Valid, 9498 Invalid, 651 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [28 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 01:07:41,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226272 states. [2023-12-19 01:07:49,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226272 to 215012. [2023-12-19 01:07:50,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215012 states, 215010 states have (on average 1.2312450583693781) internal successors, (264730), 215011 states have internal predecessors, (264730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:07:50,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215012 states to 215012 states and 264730 transitions. [2023-12-19 01:07:50,664 INFO L78 Accepts]: Start accepts. Automaton has 215012 states and 264730 transitions. Word has length 103 [2023-12-19 01:07:50,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:07:50,664 INFO L495 AbstractCegarLoop]: Abstraction has 215012 states and 264730 transitions. [2023-12-19 01:07:50,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.344827586206897) internal successors, (271), 29 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:07:50,664 INFO L276 IsEmpty]: Start isEmpty. Operand 215012 states and 264730 transitions. [2023-12-19 01:07:50,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-19 01:07:50,669 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:07:50,669 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:07:50,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 01:07:50,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:07:50,880 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:07:50,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:07:50,880 INFO L85 PathProgramCache]: Analyzing trace with hash -840007196, now seen corresponding path program 1 times [2023-12-19 01:07:50,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:07:50,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070347834] [2023-12-19 01:07:50,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:07:50,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:07:50,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:07:51,754 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:07:51,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:07:51,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070347834] [2023-12-19 01:07:51,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070347834] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:07:51,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827894686] [2023-12-19 01:07:51,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:07:51,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:07:51,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:07:51,755 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) [2023-12-19 01:07:51,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 01:07:51,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:07:51,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 01:07:51,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:07:52,786 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:07:52,786 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:07:54,073 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:07:54,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827894686] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:07:54,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:07:54,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 15] total 38 [2023-12-19 01:07:54,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786548993] [2023-12-19 01:07:54,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:07:54,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-19 01:07:54,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:07:54,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-19 01:07:54,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1258, Unknown=0, NotChecked=0, Total=1406 [2023-12-19 01:07:54,075 INFO L87 Difference]: Start difference. First operand 215012 states and 264730 transitions. Second operand has 38 states, 38 states have (on average 7.605263157894737) internal successors, (289), 38 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:08:08,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:08:08,957 INFO L93 Difference]: Finished difference Result 333382 states and 408387 transitions. [2023-12-19 01:08:08,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-12-19 01:08:08,958 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 7.605263157894737) internal successors, (289), 38 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2023-12-19 01:08:08,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:08:09,374 INFO L225 Difference]: With dead ends: 333382 [2023-12-19 01:08:09,374 INFO L226 Difference]: Without dead ends: 242762 [2023-12-19 01:08:09,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2794 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1980, Invalid=8120, Unknown=0, NotChecked=0, Total=10100 [2023-12-19 01:08:09,443 INFO L413 NwaCegarLoop]: 1563 mSDtfsCounter, 9618 mSDsluCounter, 20696 mSDsCounter, 0 mSdLazyCounter, 2064 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9618 SdHoareTripleChecker+Valid, 22259 SdHoareTripleChecker+Invalid, 2144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:08:09,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9618 Valid, 22259 Invalid, 2144 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2064 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 01:08:09,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242762 states. [2023-12-19 01:08:17,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242762 to 182050. [2023-12-19 01:08:17,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182050 states, 182048 states have (on average 1.2287968008437335) internal successors, (223700), 182049 states have internal predecessors, (223700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:08:17,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182050 states to 182050 states and 223700 transitions. [2023-12-19 01:08:17,764 INFO L78 Accepts]: Start accepts. Automaton has 182050 states and 223700 transitions. Word has length 104 [2023-12-19 01:08:17,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:08:17,764 INFO L495 AbstractCegarLoop]: Abstraction has 182050 states and 223700 transitions. [2023-12-19 01:08:17,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 7.605263157894737) internal successors, (289), 38 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:08:17,764 INFO L276 IsEmpty]: Start isEmpty. Operand 182050 states and 223700 transitions. [2023-12-19 01:08:17,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-19 01:08:17,767 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:08:17,767 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:08:17,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 01:08:17,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-19 01:08:17,972 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:08:17,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:08:17,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1686899484, now seen corresponding path program 1 times [2023-12-19 01:08:17,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:08:17,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561544033] [2023-12-19 01:08:17,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:08:17,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:08:17,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:08:18,984 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:08:18,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:08:18,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561544033] [2023-12-19 01:08:18,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561544033] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:08:18,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353299632] [2023-12-19 01:08:18,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:08:18,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:08:18,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:08:18,985 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:08:18,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 01:08:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:08:19,104 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 73 conjunts are in the unsatisfiable core [2023-12-19 01:08:19,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:08:27,593 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:08:27,593 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:08:40,229 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:08:40,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353299632] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:08:40,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:08:40,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 32, 42] total 83 [2023-12-19 01:08:40,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646334596] [2023-12-19 01:08:40,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:08:40,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2023-12-19 01:08:40,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:08:40,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2023-12-19 01:08:40,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=865, Invalid=5941, Unknown=0, NotChecked=0, Total=6806 [2023-12-19 01:08:40,232 INFO L87 Difference]: Start difference. First operand 182050 states and 223700 transitions. Second operand has 83 states, 83 states have (on average 3.4216867469879517) internal successors, (284), 83 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:18:18,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:18:18,042 INFO L93 Difference]: Finished difference Result 802083 states and 984696 transitions. [2023-12-19 01:18:18,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 557 states. [2023-12-19 01:18:18,043 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 3.4216867469879517) internal successors, (284), 83 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2023-12-19 01:18:18,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:18:19,339 INFO L225 Difference]: With dead ends: 802083 [2023-12-19 01:18:19,339 INFO L226 Difference]: Without dead ends: 724841 [2023-12-19 01:18:19,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 763 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 625 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183113 ImplicationChecksByTransitivity, 530.1s TimeCoverageRelationStatistics Valid=55999, Invalid=336503, Unknown=0, NotChecked=0, Total=392502 [2023-12-19 01:18:19,497 INFO L413 NwaCegarLoop]: 1627 mSDtfsCounter, 35160 mSDsluCounter, 35423 mSDsCounter, 0 mSdLazyCounter, 13305 mSolverCounterSat, 296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35160 SdHoareTripleChecker+Valid, 37050 SdHoareTripleChecker+Invalid, 13601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 13305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:18:19,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35160 Valid, 37050 Invalid, 13601 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [296 Valid, 13305 Invalid, 0 Unknown, 0 Unchecked, 19.1s Time] [2023-12-19 01:18:20,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724841 states. [2023-12-19 01:18:34,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724841 to 164137. [2023-12-19 01:18:34,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164137 states, 164135 states have (on average 1.2284521887470679) internal successors, (201632), 164136 states have internal predecessors, (201632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:18:34,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164137 states to 164137 states and 201632 transitions. [2023-12-19 01:18:34,788 INFO L78 Accepts]: Start accepts. Automaton has 164137 states and 201632 transitions. Word has length 104 [2023-12-19 01:18:34,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:18:34,788 INFO L495 AbstractCegarLoop]: Abstraction has 164137 states and 201632 transitions. [2023-12-19 01:18:34,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 3.4216867469879517) internal successors, (284), 83 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:18:34,788 INFO L276 IsEmpty]: Start isEmpty. Operand 164137 states and 201632 transitions. [2023-12-19 01:18:34,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-19 01:18:34,790 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:18:34,790 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:18:34,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 01:18:34,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:18:34,993 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:18:34,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:18:34,993 INFO L85 PathProgramCache]: Analyzing trace with hash -344398436, now seen corresponding path program 1 times [2023-12-19 01:18:34,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:18:34,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375171111] [2023-12-19 01:18:34,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:18:34,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:18:35,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:18:38,151 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:18:38,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:18:38,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375171111] [2023-12-19 01:18:38,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375171111] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:18:38,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444024409] [2023-12-19 01:18:38,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:18:38,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:18:38,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:18:38,152 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:18:38,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 01:18:38,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:18:38,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-19 01:18:38,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:18:39,415 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:18:39,415 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:18:40,628 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:18:40,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444024409] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:18:40,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:18:40,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 15, 16] total 63 [2023-12-19 01:18:40,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293335244] [2023-12-19 01:18:40,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:18:40,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-12-19 01:18:40,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:18:40,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-12-19 01:18:40,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=3658, Unknown=0, NotChecked=0, Total=3906 [2023-12-19 01:18:40,630 INFO L87 Difference]: Start difference. First operand 164137 states and 201632 transitions. Second operand has 63 states, 63 states have (on average 4.428571428571429) internal successors, (279), 63 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:59,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:19:59,886 INFO L93 Difference]: Finished difference Result 426930 states and 526175 transitions. [2023-12-19 01:19:59,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 225 states. [2023-12-19 01:19:59,886 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 4.428571428571429) internal successors, (279), 63 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2023-12-19 01:19:59,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:20:00,700 INFO L225 Difference]: With dead ends: 426930 [2023-12-19 01:20:00,701 INFO L226 Difference]: Without dead ends: 364787 [2023-12-19 01:20:00,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28616 ImplicationChecksByTransitivity, 45.1s TimeCoverageRelationStatistics Valid=15923, Invalid=65587, Unknown=0, NotChecked=0, Total=81510 [2023-12-19 01:20:00,835 INFO L413 NwaCegarLoop]: 1857 mSDtfsCounter, 37013 mSDsluCounter, 38438 mSDsCounter, 0 mSdLazyCounter, 11982 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37013 SdHoareTripleChecker+Valid, 40295 SdHoareTripleChecker+Invalid, 12245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 11982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:20:00,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37013 Valid, 40295 Invalid, 12245 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [263 Valid, 11982 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2023-12-19 01:20:01,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364787 states. Received shutdown request... [2023-12-19 01:20:11,755 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 01:20:11,766 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 01:20:12,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 01:20:12,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-19 01:20:12,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364787 to 140426. [2023-12-19 01:20:13,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140426 states, 140424 states have (on average 1.2283156725346094) internal successors, (172485), 140425 states have internal predecessors, (172485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:13,181 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-19 01:20:13,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-19 01:20:13,183 WARN L619 AbstractCegarLoop]: Verification canceled: while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). [2023-12-19 01:20:13,184 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-19 01:20:13,191 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:20:13,194 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 01:20:13,196 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 01:20:13 BoogieIcfgContainer [2023-12-19 01:20:13,196 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 01:20:13,198 INFO L158 Benchmark]: Toolchain (without parser) took 826731.73ms. Allocated memory was 311.4MB in the beginning and 7.0GB in the end (delta: 6.7GB). Free memory was 239.2MB in the beginning and 4.8GB in the end (delta: -4.5GB). Peak memory consumption was 3.9GB. Max. memory is 8.0GB. [2023-12-19 01:20:13,198 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 211.8MB. Free memory is still 163.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 01:20:13,199 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1315.67ms. Allocated memory is still 311.4MB. Free memory was 239.0MB in the beginning and 246.9MB in the end (delta: -8.0MB). Peak memory consumption was 147.7MB. Max. memory is 8.0GB. [2023-12-19 01:20:13,203 INFO L158 Benchmark]: Boogie Procedure Inliner took 323.50ms. Allocated memory is still 311.4MB. Free memory was 246.9MB in the beginning and 205.8MB in the end (delta: 41.1MB). Peak memory consumption was 77.8MB. Max. memory is 8.0GB. [2023-12-19 01:20:13,204 INFO L158 Benchmark]: Boogie Preprocessor took 374.87ms. Allocated memory was 311.4MB in the beginning and 573.6MB in the end (delta: 262.1MB). Free memory was 205.8MB in the beginning and 440.7MB in the end (delta: -234.9MB). Peak memory consumption was 88.1MB. Max. memory is 8.0GB. [2023-12-19 01:20:13,206 INFO L158 Benchmark]: RCFGBuilder took 3204.71ms. Allocated memory was 573.6MB in the beginning and 877.7MB in the end (delta: 304.1MB). Free memory was 440.7MB in the beginning and 557.6MB in the end (delta: -116.9MB). Peak memory consumption was 189.3MB. Max. memory is 8.0GB. [2023-12-19 01:20:13,206 INFO L158 Benchmark]: TraceAbstraction took 821506.88ms. Allocated memory was 877.7MB in the beginning and 7.0GB in the end (delta: 6.1GB). Free memory was 557.1MB in the beginning and 4.8GB in the end (delta: -4.2GB). Peak memory consumption was 3.7GB. Max. memory is 8.0GB. [2023-12-19 01:20:13,206 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45ms. Allocated memory is still 211.8MB. Free memory is still 163.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1315.67ms. Allocated memory is still 311.4MB. Free memory was 239.0MB in the beginning and 246.9MB in the end (delta: -8.0MB). Peak memory consumption was 147.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 323.50ms. Allocated memory is still 311.4MB. Free memory was 246.9MB in the beginning and 205.8MB in the end (delta: 41.1MB). Peak memory consumption was 77.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 374.87ms. Allocated memory was 311.4MB in the beginning and 573.6MB in the end (delta: 262.1MB). Free memory was 205.8MB in the beginning and 440.7MB in the end (delta: -234.9MB). Peak memory consumption was 88.1MB. Max. memory is 8.0GB. * RCFGBuilder took 3204.71ms. Allocated memory was 573.6MB in the beginning and 877.7MB in the end (delta: 304.1MB). Free memory was 440.7MB in the beginning and 557.6MB in the end (delta: -116.9MB). Peak memory consumption was 189.3MB. Max. memory is 8.0GB. * TraceAbstraction took 821506.88ms. Allocated memory was 877.7MB in the beginning and 7.0GB in the end (delta: 6.1GB). Free memory was 557.1MB in the beginning and 4.8GB in the end (delta: -4.2GB). Peak memory consumption was 3.7GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 514]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 514). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 730]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 730). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 851 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 821.5s, OverallIterations: 35, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 712.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 252494 SdHoareTripleChecker+Valid, 35.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 252494 mSDsluCounter, 243010 SdHoareTripleChecker+Invalid, 31.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 188249 mSDsCounter, 1624 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 36552 IncrementalHoareTripleChecker+Invalid, 38176 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1624 mSolverCounterUnsat, 54761 mSDtfsCounter, 36552 mSolverCounterSat, 0.9s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3307 GetRequests, 1858 SyntacticMatches, 0 SemanticMatches, 1449 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218770 ImplicationChecksByTransitivity, 587.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=215012occurred in iteration=32, InterpolantAutomatonStates: 1157, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 61.6s AutomataMinimizationTime, 35 MinimizatonAttempts, 801160 StatesRemovedByMinimization, 31 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 43.6s InterpolantComputationTime, 3870 NumberOfCodeBlocks, 3870 NumberOfCodeBlocksAsserted, 45 NumberOfCheckSat, 4832 ConstructedInterpolants, 0 QuantifiedInterpolants, 74857 SizeOfPredicates, 70 NumberOfNonLiveVariables, 4807 ConjunctsInSsa, 232 ConjunctsInUnsatCore, 55 InterpolantComputations, 25 PerfectInterpolantSequences, 464/702 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown