/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_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 01:02:39,627 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 01:02:39,676 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 01:02:39,679 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 01:02:39,679 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 01:02:39,692 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 01:02:39,693 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 01:02:39,693 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 01:02:39,693 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 01:02:39,694 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 01:02:39,694 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 01:02:39,694 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 01:02:39,695 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 01:02:39,695 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 01:02:39,695 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 01:02:39,695 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 01:02:39,696 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 01:02:39,696 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 01:02:39,696 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 01:02:39,696 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 01:02:39,697 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 01:02:39,697 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 01:02:39,697 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 01:02:39,698 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 01:02:39,698 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 01:02:39,698 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 01:02:39,698 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 01:02:39,698 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 01:02:39,699 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 01:02:39,699 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 01:02:39,699 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 01:02:39,699 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 01:02:39,699 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:02:39,699 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 01:02:39,700 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 01:02:39,700 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 01:02:39,700 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 01:02:39,700 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 01:02:39,700 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 01:02:39,700 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 01:02:39,700 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 01:02:39,701 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 01:02:39,701 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 01:02:39,701 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 01:02:39,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 01:02:39,862 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 01:02:39,863 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 01:02:39,864 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 01:02:39,865 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 01:02:39,865 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label05.c [2023-12-19 01:02:40,933 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 01:02:41,311 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 01:02:41,313 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label05.c [2023-12-19 01:02:41,342 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6706e630/63d7a02a249141aa842268407ab76328/FLAG86ac50a9d [2023-12-19 01:02:41,356 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6706e630/63d7a02a249141aa842268407ab76328 [2023-12-19 01:02:41,358 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 01:02:41,359 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 01:02:41,360 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 01:02:41,360 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 01:02:41,363 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 01:02:41,363 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:02:41" (1/1) ... [2023-12-19 01:02:41,364 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d55761f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:02:41, skipping insertion in model container [2023-12-19 01:02:41,364 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:02:41" (1/1) ... [2023-12-19 01:02:41,451 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 01:02:41,847 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_label05.c[15510,15523] [2023-12-19 01:02:41,932 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_label05.c[22446,22459] [2023-12-19 01:02:42,460 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:02:42,468 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 01:02:42,509 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_label05.c[15510,15523] [2023-12-19 01:02:42,514 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_label05.c[22446,22459] [2023-12-19 01:02:42,792 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:02:42,812 INFO L206 MainTranslator]: Completed translation [2023-12-19 01:02:42,814 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:02:42 WrapperNode [2023-12-19 01:02:42,814 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 01:02:42,815 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 01:02:42,815 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 01:02:42,815 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 01:02:42,820 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:02:42" (1/1) ... [2023-12-19 01:02:42,863 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:02:42" (1/1) ... [2023-12-19 01:02:43,122 INFO L138 Inliner]: procedures = 38, calls = 23, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 5151 [2023-12-19 01:02:43,122 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 01:02:43,123 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 01:02:43,123 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 01:02:43,123 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 01:02:43,130 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:02:42" (1/1) ... [2023-12-19 01:02:43,131 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:02:42" (1/1) ... [2023-12-19 01:02:43,264 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:02:42" (1/1) ... [2023-12-19 01:02:43,369 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 01:02:43,369 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:02:42" (1/1) ... [2023-12-19 01:02:43,370 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:02:42" (1/1) ... [2023-12-19 01:02:43,509 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:02:42" (1/1) ... [2023-12-19 01:02:43,531 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:02:42" (1/1) ... [2023-12-19 01:02:43,574 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:02:42" (1/1) ... [2023-12-19 01:02:43,599 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:02:42" (1/1) ... [2023-12-19 01:02:43,658 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 01:02:43,659 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 01:02:43,660 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 01:02:43,660 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 01:02:43,661 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:02:42" (1/1) ... [2023-12-19 01:02:43,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:02:43,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:02:43,726 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 01:02:43,738 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 01:02:43,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 01:02:43,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 01:02:43,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 01:02:43,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 01:02:43,852 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 01:02:43,854 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 01:02:46,868 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 01:02:46,907 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 01:02:46,907 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-19 01:02:46,908 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:02:46 BoogieIcfgContainer [2023-12-19 01:02:46,908 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 01:02:46,909 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 01:02:46,909 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 01:02:46,912 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 01:02:46,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 01:02:41" (1/3) ... [2023-12-19 01:02:46,912 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@385cb4f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:02:46, skipping insertion in model container [2023-12-19 01:02:46,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:02:42" (2/3) ... [2023-12-19 01:02:46,913 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@385cb4f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:02:46, skipping insertion in model container [2023-12-19 01:02:46,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:02:46" (3/3) ... [2023-12-19 01:02:46,913 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label05.c [2023-12-19 01:02:46,924 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 01:02:46,924 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-19 01:02:46,992 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 01:02:46,996 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;@53563d35, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 01:02:46,996 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-19 01:02:47,005 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 01:02:47,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-19 01:02:47,012 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:02:47,013 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 01:02:47,013 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:02:47,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:02:47,018 INFO L85 PathProgramCache]: Analyzing trace with hash -150308239, now seen corresponding path program 1 times [2023-12-19 01:02:47,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:02:47,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320344611] [2023-12-19 01:02:47,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:02:47,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:02:47,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:02:47,239 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 01:02:47,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:02:47,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320344611] [2023-12-19 01:02:47,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320344611] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:02:47,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:02:47,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 01:02:47,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732640779] [2023-12-19 01:02:47,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:02:47,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 01:02:47,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:02:47,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 01:02:47,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 01:02:47,273 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 01:02:47,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:02:47,349 INFO L93 Difference]: Finished difference Result 1657 states and 3259 transitions. [2023-12-19 01:02:47,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 01:02:47,354 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 01:02:47,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:02:47,369 INFO L225 Difference]: With dead ends: 1657 [2023-12-19 01:02:47,369 INFO L226 Difference]: Without dead ends: 847 [2023-12-19 01:02:47,375 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 01:02:47,378 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 01:02:47,379 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 01:02:47,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2023-12-19 01:02:47,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 847. [2023-12-19 01:02:47,437 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 01:02:47,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1602 transitions. [2023-12-19 01:02:47,440 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1602 transitions. Word has length 23 [2023-12-19 01:02:47,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:02:47,440 INFO L495 AbstractCegarLoop]: Abstraction has 847 states and 1602 transitions. [2023-12-19 01:02:47,440 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 01:02:47,440 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1602 transitions. [2023-12-19 01:02:47,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-19 01:02:47,441 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:02:47,442 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 01:02:47,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 01:02:47,442 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:02:47,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:02:47,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1839251981, now seen corresponding path program 1 times [2023-12-19 01:02:47,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:02:47,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886021406] [2023-12-19 01:02:47,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:02:47,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:02:47,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:02:47,719 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 01:02:47,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:02:47,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886021406] [2023-12-19 01:02:47,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886021406] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:02:47,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:02:47,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:02:47,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986493688] [2023-12-19 01:02:47,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:02:47,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:02:47,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:02:47,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:02:47,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:02:47,727 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 01:02:47,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:02:47,796 INFO L93 Difference]: Finished difference Result 899 states and 1684 transitions. [2023-12-19 01:02:47,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 01:02:47,796 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 01:02:47,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:02:47,798 INFO L225 Difference]: With dead ends: 899 [2023-12-19 01:02:47,799 INFO L226 Difference]: Without dead ends: 847 [2023-12-19 01:02:47,799 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 01:02:47,800 INFO L413 NwaCegarLoop]: 1599 mSDtfsCounter, 0 mSDsluCounter, 3154 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:02:47,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4753 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:02:47,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2023-12-19 01:02:47,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 847. [2023-12-19 01:02:47,848 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 01:02:47,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1562 transitions. [2023-12-19 01:02:47,851 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1562 transitions. Word has length 23 [2023-12-19 01:02:47,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:02:47,851 INFO L495 AbstractCegarLoop]: Abstraction has 847 states and 1562 transitions. [2023-12-19 01:02:47,852 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 01:02:47,852 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1562 transitions. [2023-12-19 01:02:47,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-19 01:02:47,853 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:02:47,853 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] [2023-12-19 01:02:47,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 01:02:47,853 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:02:47,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:02:47,855 INFO L85 PathProgramCache]: Analyzing trace with hash 620699521, now seen corresponding path program 1 times [2023-12-19 01:02:47,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:02:47,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118917817] [2023-12-19 01:02:47,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:02:47,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:02:47,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:02:47,969 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 01:02:47,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:02:47,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118917817] [2023-12-19 01:02:47,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118917817] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:02:47,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:02:47,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:02:47,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380435139] [2023-12-19 01:02:47,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:02:47,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:02:47,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:02:47,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:02:47,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:02:47,975 INFO L87 Difference]: Start difference. First operand 847 states and 1562 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 01:02:53,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:02:53,259 INFO L93 Difference]: Finished difference Result 3102 states and 5871 transitions. [2023-12-19 01:02:53,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 01:02:53,260 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2023-12-19 01:02:53,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:02:53,269 INFO L225 Difference]: With dead ends: 3102 [2023-12-19 01:02:53,269 INFO L226 Difference]: Without dead ends: 2349 [2023-12-19 01:02:53,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:02:53,274 INFO L413 NwaCegarLoop]: 795 mSDtfsCounter, 2440 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5357 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2440 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 6510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:02:53,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2440 Valid, 813 Invalid, 6510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5357 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-12-19 01:02:53,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2349 states. [2023-12-19 01:02:53,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2349 to 2349. [2023-12-19 01:02:53,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2349 states, 2347 states have (on average 1.566254793353217) internal successors, (3676), 2348 states have internal predecessors, (3676), 0 states have call successors, (0), 0 states 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 01:02:53,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2349 states to 2349 states and 3676 transitions. [2023-12-19 01:02:53,359 INFO L78 Accepts]: Start accepts. Automaton has 2349 states and 3676 transitions. Word has length 59 [2023-12-19 01:02:53,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:02:53,360 INFO L495 AbstractCegarLoop]: Abstraction has 2349 states and 3676 transitions. [2023-12-19 01:02:53,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 01:02:53,360 INFO L276 IsEmpty]: Start isEmpty. Operand 2349 states and 3676 transitions. [2023-12-19 01:02:53,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-19 01:02:53,361 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:02:53,361 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 01:02:53,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 01:02:53,361 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:02:53,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:02:53,362 INFO L85 PathProgramCache]: Analyzing trace with hash -138572409, now seen corresponding path program 1 times [2023-12-19 01:02:53,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:02:53,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916004609] [2023-12-19 01:02:53,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:02:53,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:02:53,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:02:53,476 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 01:02:53,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:02:53,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916004609] [2023-12-19 01:02:53,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916004609] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:02:53,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:02:53,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:02:53,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687056163] [2023-12-19 01:02:53,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:02:53,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:02:53,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:02:53,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:02:53,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:02:53,479 INFO L87 Difference]: Start difference. First operand 2349 states and 3676 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 01:02:53,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:02:53,746 INFO L93 Difference]: Finished difference Result 2937 states and 4624 transitions. [2023-12-19 01:02:53,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 01:02:53,746 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 01:02:53,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:02:53,755 INFO L225 Difference]: With dead ends: 2937 [2023-12-19 01:02:53,755 INFO L226 Difference]: Without dead ends: 2888 [2023-12-19 01:02:53,756 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 01:02:53,761 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 01:02:53,762 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 01:02:53,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2888 states. [2023-12-19 01:02:53,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2888 to 2396. [2023-12-19 01:02:53,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2396 states, 2394 states have (on average 1.567251461988304) internal successors, (3752), 2395 states have internal predecessors, (3752), 0 states have call successors, (0), 0 states 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 01:02:53,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2396 states to 2396 states and 3752 transitions. [2023-12-19 01:02:53,800 INFO L78 Accepts]: Start accepts. Automaton has 2396 states and 3752 transitions. Word has length 62 [2023-12-19 01:02:53,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:02:53,802 INFO L495 AbstractCegarLoop]: Abstraction has 2396 states and 3752 transitions. [2023-12-19 01:02:53,802 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 01:02:53,802 INFO L276 IsEmpty]: Start isEmpty. Operand 2396 states and 3752 transitions. [2023-12-19 01:02:53,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-19 01:02:53,806 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:02:53,806 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 01:02:53,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 01:02:53,806 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:02:53,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:02:53,807 INFO L85 PathProgramCache]: Analyzing trace with hash -157852617, now seen corresponding path program 1 times [2023-12-19 01:02:53,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:02:53,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957462816] [2023-12-19 01:02:53,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:02:53,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:02:53,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:02:53,895 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 01:02:53,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:02:53,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957462816] [2023-12-19 01:02:53,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957462816] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:02:53,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:02:53,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:02:53,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138182741] [2023-12-19 01:02:53,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:02:53,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:02:53,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:02:53,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:02:53,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:02:53,897 INFO L87 Difference]: Start difference. First operand 2396 states and 3752 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 01:02:53,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:02:53,936 INFO L93 Difference]: Finished difference Result 2577 states and 4043 transitions. [2023-12-19 01:02:53,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:02:53,936 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 01:02:53,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:02:53,944 INFO L225 Difference]: With dead ends: 2577 [2023-12-19 01:02:53,944 INFO L226 Difference]: Without dead ends: 2481 [2023-12-19 01:02:53,945 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 01:02:53,945 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 01:02:53,945 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 01:02:53,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2481 states. [2023-12-19 01:02:53,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2481 to 2477. [2023-12-19 01:02:53,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2477 states, 2475 states have (on average 1.5676767676767678) internal successors, (3880), 2476 states have internal predecessors, (3880), 0 states have call successors, (0), 0 states 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 01:02:53,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2477 states to 2477 states and 3880 transitions. [2023-12-19 01:02:53,981 INFO L78 Accepts]: Start accepts. Automaton has 2477 states and 3880 transitions. Word has length 64 [2023-12-19 01:02:53,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:02:53,982 INFO L495 AbstractCegarLoop]: Abstraction has 2477 states and 3880 transitions. [2023-12-19 01:02:53,983 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 01:02:53,983 INFO L276 IsEmpty]: Start isEmpty. Operand 2477 states and 3880 transitions. [2023-12-19 01:02:53,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-19 01:02:53,984 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:02:53,984 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 01:02:53,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 01:02:53,984 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:02:53,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:02:53,985 INFO L85 PathProgramCache]: Analyzing trace with hash -155707665, now seen corresponding path program 1 times [2023-12-19 01:02:53,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:02:53,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155288669] [2023-12-19 01:02:53,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:02:53,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:02:54,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:02:54,325 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 01:02:54,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:02:54,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155288669] [2023-12-19 01:02:54,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155288669] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:02:54,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:02:54,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:02:54,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166242906] [2023-12-19 01:02:54,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:02:54,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:02:54,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:02:54,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:02:54,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:02:54,327 INFO L87 Difference]: Start difference. First operand 2477 states and 3880 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 01:02:54,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:02:54,509 INFO L93 Difference]: Finished difference Result 2656 states and 4164 transitions. [2023-12-19 01:02:54,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 01:02:54,509 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 01:02:54,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:02:54,516 INFO L225 Difference]: With dead ends: 2656 [2023-12-19 01:02:54,516 INFO L226 Difference]: Without dead ends: 2479 [2023-12-19 01:02:54,517 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 01:02:54,518 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 4519 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4519 SdHoareTripleChecker+Valid, 1924 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:02:54,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4519 Valid, 1924 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:02:54,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2479 states. [2023-12-19 01:02:54,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2479 to 2477. [2023-12-19 01:02:54,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2477 states, 2475 states have (on average 1.566868686868687) internal successors, (3878), 2476 states have internal predecessors, (3878), 0 states have call successors, (0), 0 states 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 01:02:54,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2477 states to 2477 states and 3878 transitions. [2023-12-19 01:02:54,556 INFO L78 Accepts]: Start accepts. Automaton has 2477 states and 3878 transitions. Word has length 64 [2023-12-19 01:02:54,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:02:54,556 INFO L495 AbstractCegarLoop]: Abstraction has 2477 states and 3878 transitions. [2023-12-19 01:02:54,557 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 01:02:54,557 INFO L276 IsEmpty]: Start isEmpty. Operand 2477 states and 3878 transitions. [2023-12-19 01:02:54,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-19 01:02:54,557 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:02:54,557 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 01:02:54,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 01:02:54,557 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:02:54,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:02:54,558 INFO L85 PathProgramCache]: Analyzing trace with hash -660670881, now seen corresponding path program 1 times [2023-12-19 01:02:54,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:02:54,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256183025] [2023-12-19 01:02:54,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:02:54,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:02:54,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:02:54,684 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 01:02:54,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:02:54,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256183025] [2023-12-19 01:02:54,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256183025] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:02:54,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:02:54,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:02:54,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227641769] [2023-12-19 01:02:54,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:02:54,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:02:54,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:02:54,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:02:54,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:02:54,686 INFO L87 Difference]: Start difference. First operand 2477 states and 3878 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 01:02:54,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:02:54,720 INFO L93 Difference]: Finished difference Result 2485 states and 3887 transitions. [2023-12-19 01:02:54,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 01:02:54,720 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 01:02:54,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:02:54,727 INFO L225 Difference]: With dead ends: 2485 [2023-12-19 01:02:54,727 INFO L226 Difference]: Without dead ends: 2483 [2023-12-19 01:02:54,728 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 01:02:54,728 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 01:02:54,728 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 01:02:54,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2483 states. [2023-12-19 01:02:54,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2483 to 2481. [2023-12-19 01:02:54,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2481 states, 2479 states have (on average 1.5655506252521179) internal successors, (3881), 2480 states have internal predecessors, (3881), 0 states have call successors, (0), 0 states 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 01:02:54,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2481 states to 2481 states and 3881 transitions. [2023-12-19 01:02:54,761 INFO L78 Accepts]: Start accepts. Automaton has 2481 states and 3881 transitions. Word has length 65 [2023-12-19 01:02:54,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:02:54,762 INFO L495 AbstractCegarLoop]: Abstraction has 2481 states and 3881 transitions. [2023-12-19 01:02:54,762 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 01:02:54,762 INFO L276 IsEmpty]: Start isEmpty. Operand 2481 states and 3881 transitions. [2023-12-19 01:02:54,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-19 01:02:54,762 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:02:54,762 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 01:02:54,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 01:02:54,763 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:02:54,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:02:54,763 INFO L85 PathProgramCache]: Analyzing trace with hash -347651057, now seen corresponding path program 1 times [2023-12-19 01:02:54,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:02:54,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818218946] [2023-12-19 01:02:54,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:02:54,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:02:54,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:02:54,812 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 01:02:54,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:02:54,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818218946] [2023-12-19 01:02:54,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818218946] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:02:54,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:02:54,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:02:54,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775472599] [2023-12-19 01:02:54,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:02:54,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:02:54,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:02:54,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:02:54,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:02:54,814 INFO L87 Difference]: Start difference. First operand 2481 states and 3881 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 01:02:54,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:02:54,890 INFO L93 Difference]: Finished difference Result 2827 states and 4421 transitions. [2023-12-19 01:02:54,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:02:54,891 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 01:02:54,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:02:54,897 INFO L225 Difference]: With dead ends: 2827 [2023-12-19 01:02:54,897 INFO L226 Difference]: Without dead ends: 2646 [2023-12-19 01:02:54,898 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 01:02:54,899 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 01:02:54,899 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 01:02:54,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2646 states. [2023-12-19 01:02:54,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2646 to 2644. [2023-12-19 01:02:54,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2644 states, 2642 states have (on average 1.5639666919000756) internal successors, (4132), 2643 states have internal predecessors, (4132), 0 states have call successors, (0), 0 states 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 01:02:54,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2644 states to 2644 states and 4132 transitions. [2023-12-19 01:02:54,935 INFO L78 Accepts]: Start accepts. Automaton has 2644 states and 4132 transitions. Word has length 66 [2023-12-19 01:02:54,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:02:54,936 INFO L495 AbstractCegarLoop]: Abstraction has 2644 states and 4132 transitions. [2023-12-19 01:02:54,936 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 01:02:54,936 INFO L276 IsEmpty]: Start isEmpty. Operand 2644 states and 4132 transitions. [2023-12-19 01:02:54,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-19 01:02:54,936 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:02:54,936 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 01:02:54,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 01:02:54,937 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:02:54,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:02:54,937 INFO L85 PathProgramCache]: Analyzing trace with hash -307707121, now seen corresponding path program 1 times [2023-12-19 01:02:54,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:02:54,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7725788] [2023-12-19 01:02:54,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:02:54,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:02:54,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:02:54,973 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 01:02:54,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:02:54,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7725788] [2023-12-19 01:02:54,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7725788] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:02:54,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:02:54,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:02:54,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912167074] [2023-12-19 01:02:54,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:02:54,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:02:54,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:02:54,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:02:54,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:02:54,975 INFO L87 Difference]: Start difference. First operand 2644 states and 4132 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 01:02:55,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:02:55,008 INFO L93 Difference]: Finished difference Result 3300 states and 5146 transitions. [2023-12-19 01:02:55,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:02:55,009 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 01:02:55,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:02:55,016 INFO L225 Difference]: With dead ends: 3300 [2023-12-19 01:02:55,017 INFO L226 Difference]: Without dead ends: 2956 [2023-12-19 01:02:55,019 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 01:02:55,021 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 01:02:55,021 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 01:02:55,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2023-12-19 01:02:55,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 2954. [2023-12-19 01:02:55,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2954 states, 2952 states have (on average 1.5589430894308942) internal successors, (4602), 2953 states have internal predecessors, (4602), 0 states have call successors, (0), 0 states 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 01:02:55,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2954 states to 2954 states and 4602 transitions. [2023-12-19 01:02:55,069 INFO L78 Accepts]: Start accepts. Automaton has 2954 states and 4602 transitions. Word has length 66 [2023-12-19 01:02:55,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:02:55,069 INFO L495 AbstractCegarLoop]: Abstraction has 2954 states and 4602 transitions. [2023-12-19 01:02:55,069 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 01:02:55,069 INFO L276 IsEmpty]: Start isEmpty. Operand 2954 states and 4602 transitions. [2023-12-19 01:02:55,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-19 01:02:55,073 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:02:55,073 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 01:02:55,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 01:02:55,074 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:02:55,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:02:55,074 INFO L85 PathProgramCache]: Analyzing trace with hash -933363185, now seen corresponding path program 1 times [2023-12-19 01:02:55,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:02:55,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264442506] [2023-12-19 01:02:55,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:02:55,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:02:55,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:02:55,130 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 01:02:55,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:02:55,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264442506] [2023-12-19 01:02:55,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264442506] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:02:55,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:02:55,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:02:55,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893940708] [2023-12-19 01:02:55,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:02:55,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:02:55,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:02:55,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:02:55,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:02:55,132 INFO L87 Difference]: Start difference. First operand 2954 states and 4602 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 01:02:55,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:02:55,177 INFO L93 Difference]: Finished difference Result 4198 states and 6500 transitions. [2023-12-19 01:02:55,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:02:55,177 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 01:02:55,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:02:55,188 INFO L225 Difference]: With dead ends: 4198 [2023-12-19 01:02:55,188 INFO L226 Difference]: Without dead ends: 3544 [2023-12-19 01:02:55,190 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 01:02:55,190 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 01:02:55,190 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 01:02:55,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3544 states. [2023-12-19 01:02:55,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3544 to 3542. [2023-12-19 01:02:55,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3542 states, 3540 states have (on average 1.547457627118644) internal successors, (5478), 3541 states have internal predecessors, (5478), 0 states have call successors, (0), 0 states 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 01:02:55,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3542 states to 3542 states and 5478 transitions. [2023-12-19 01:02:55,265 INFO L78 Accepts]: Start accepts. Automaton has 3542 states and 5478 transitions. Word has length 66 [2023-12-19 01:02:55,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:02:55,266 INFO L495 AbstractCegarLoop]: Abstraction has 3542 states and 5478 transitions. [2023-12-19 01:02:55,266 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 01:02:55,266 INFO L276 IsEmpty]: Start isEmpty. Operand 3542 states and 5478 transitions. [2023-12-19 01:02:55,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-19 01:02:55,267 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:02:55,267 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 01:02:55,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 01:02:55,267 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:02:55,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:02:55,268 INFO L85 PathProgramCache]: Analyzing trace with hash -44629745, now seen corresponding path program 1 times [2023-12-19 01:02:55,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:02:55,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17128479] [2023-12-19 01:02:55,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:02:55,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:02:55,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:02:55,307 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 01:02:55,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:02:55,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17128479] [2023-12-19 01:02:55,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17128479] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:02:55,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:02:55,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:02:55,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315280342] [2023-12-19 01:02:55,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:02:55,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:02:55,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:02:55,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:02:55,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:02:55,309 INFO L87 Difference]: Start difference. First operand 3542 states and 5478 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 01:02:55,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:02:55,380 INFO L93 Difference]: Finished difference Result 5898 states and 9016 transitions. [2023-12-19 01:02:55,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:02:55,380 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 01:02:55,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:02:55,388 INFO L225 Difference]: With dead ends: 5898 [2023-12-19 01:02:55,388 INFO L226 Difference]: Without dead ends: 4656 [2023-12-19 01:02:55,390 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 01:02:55,390 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 01:02:55,390 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 01:02:55,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4656 states. [2023-12-19 01:02:55,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4656 to 4654. [2023-12-19 01:02:55,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4654 states, 4652 states have (on average 1.5266552020636286) internal successors, (7102), 4653 states have internal predecessors, (7102), 0 states have call successors, (0), 0 states 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 01:02:55,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4654 states to 4654 states and 7102 transitions. [2023-12-19 01:02:55,486 INFO L78 Accepts]: Start accepts. Automaton has 4654 states and 7102 transitions. Word has length 66 [2023-12-19 01:02:55,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:02:55,486 INFO L495 AbstractCegarLoop]: Abstraction has 4654 states and 7102 transitions. [2023-12-19 01:02:55,487 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 01:02:55,487 INFO L276 IsEmpty]: Start isEmpty. Operand 4654 states and 7102 transitions. [2023-12-19 01:02:55,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-19 01:02:55,488 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:02:55,488 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 01:02:55,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 01:02:55,488 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:02:55,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:02:55,488 INFO L85 PathProgramCache]: Analyzing trace with hash -79067889, now seen corresponding path program 1 times [2023-12-19 01:02:55,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:02:55,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421743105] [2023-12-19 01:02:55,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:02:55,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:02:55,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:02:55,526 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 01:02:55,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:02:55,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421743105] [2023-12-19 01:02:55,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421743105] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:02:55,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:02:55,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:02:55,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998950439] [2023-12-19 01:02:55,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:02:55,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:02:55,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:02:55,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:02:55,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:02:55,528 INFO L87 Difference]: Start difference. First operand 4654 states and 7102 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 01:02:55,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:02:55,622 INFO L93 Difference]: Finished difference Result 9106 states and 13664 transitions. [2023-12-19 01:02:55,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:02:55,622 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 01:02:55,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:02:55,635 INFO L225 Difference]: With dead ends: 9106 [2023-12-19 01:02:55,635 INFO L226 Difference]: Without dead ends: 6752 [2023-12-19 01:02:55,640 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 01:02:55,640 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 01:02:55,641 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 01:02:55,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6752 states. [2023-12-19 01:02:55,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6752 to 6750. [2023-12-19 01:02:55,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6750 states, 6748 states have (on average 1.495850622406639) internal successors, (10094), 6749 states have internal predecessors, (10094), 0 states have call successors, (0), 0 states 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 01:02:55,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6750 states to 6750 states and 10094 transitions. [2023-12-19 01:02:55,799 INFO L78 Accepts]: Start accepts. Automaton has 6750 states and 10094 transitions. Word has length 66 [2023-12-19 01:02:55,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:02:55,799 INFO L495 AbstractCegarLoop]: Abstraction has 6750 states and 10094 transitions. [2023-12-19 01:02:55,799 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 01:02:55,799 INFO L276 IsEmpty]: Start isEmpty. Operand 6750 states and 10094 transitions. [2023-12-19 01:02:55,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-19 01:02:55,800 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:02:55,800 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 01:02:55,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 01:02:55,800 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:02:55,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:02:55,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1522612916, now seen corresponding path program 1 times [2023-12-19 01:02:55,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:02:55,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666122404] [2023-12-19 01:02:55,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:02:55,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:02:55,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:02:55,835 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 01:02:55,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:02:55,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666122404] [2023-12-19 01:02:55,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666122404] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:02:55,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:02:55,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:02:55,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384926360] [2023-12-19 01:02:55,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:02:55,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:02:55,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:02:55,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:02:55,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:02:55,837 INFO L87 Difference]: Start difference. First operand 6750 states and 10094 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 01:02:56,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:02:56,029 INFO L93 Difference]: Finished difference Result 11365 states and 16948 transitions. [2023-12-19 01:02:56,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:02:56,029 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 01:02:56,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:02:56,044 INFO L225 Difference]: With dead ends: 11365 [2023-12-19 01:02:56,044 INFO L226 Difference]: Without dead ends: 8866 [2023-12-19 01:02:56,049 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 01:02:56,050 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 01:02:56,050 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 01:02:56,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8866 states. [2023-12-19 01:02:56,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8866 to 8864. [2023-12-19 01:02:56,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8864 states, 8862 states have (on average 1.4822839088241933) internal successors, (13136), 8863 states have internal predecessors, (13136), 0 states have call successors, (0), 0 states 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 01:02:56,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8864 states to 8864 states and 13136 transitions. [2023-12-19 01:02:56,259 INFO L78 Accepts]: Start accepts. Automaton has 8864 states and 13136 transitions. Word has length 68 [2023-12-19 01:02:56,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:02:56,259 INFO L495 AbstractCegarLoop]: Abstraction has 8864 states and 13136 transitions. [2023-12-19 01:02:56,260 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 01:02:56,260 INFO L276 IsEmpty]: Start isEmpty. Operand 8864 states and 13136 transitions. [2023-12-19 01:02:56,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-19 01:02:56,261 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:02:56,261 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 01:02:56,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 01:02:56,262 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:02:56,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:02:56,263 INFO L85 PathProgramCache]: Analyzing trace with hash 443992391, now seen corresponding path program 1 times [2023-12-19 01:02:56,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:02:56,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321699288] [2023-12-19 01:02:56,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:02:56,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:02:56,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:02:56,415 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 01:02:56,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:02:56,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321699288] [2023-12-19 01:02:56,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321699288] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:02:56,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:02:56,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:02:56,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501240157] [2023-12-19 01:02:56,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:02:56,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:02:56,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:02:56,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:02:56,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:02:56,417 INFO L87 Difference]: Start difference. First operand 8864 states and 13136 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 01:02:57,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:02:57,265 INFO L93 Difference]: Finished difference Result 49582 states and 72247 transitions. [2023-12-19 01:02:57,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 01:02:57,266 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 01:02:57,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:02:57,333 INFO L225 Difference]: With dead ends: 49582 [2023-12-19 01:02:57,333 INFO L226 Difference]: Without dead ends: 43020 [2023-12-19 01:02:57,347 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 01:02:57,347 INFO L413 NwaCegarLoop]: 1634 mSDtfsCounter, 8086 mSDsluCounter, 2232 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8086 SdHoareTripleChecker+Valid, 3866 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:02:57,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8086 Valid, 3866 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:02:57,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43020 states. [2023-12-19 01:02:57,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43020 to 15424. [2023-12-19 01:02:57,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15424 states, 15422 states have (on average 1.4638827648813384) internal successors, (22576), 15423 states have internal predecessors, (22576), 0 states have call successors, (0), 0 states 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 01:02:57,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15424 states to 15424 states and 22576 transitions. [2023-12-19 01:02:57,843 INFO L78 Accepts]: Start accepts. Automaton has 15424 states and 22576 transitions. Word has length 86 [2023-12-19 01:02:57,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:02:57,843 INFO L495 AbstractCegarLoop]: Abstraction has 15424 states and 22576 transitions. [2023-12-19 01:02:57,843 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 01:02:57,843 INFO L276 IsEmpty]: Start isEmpty. Operand 15424 states and 22576 transitions. [2023-12-19 01:02:57,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-19 01:02:57,845 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:02:57,845 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 01:02:57,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 01:02:57,846 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:02:57,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:02:57,846 INFO L85 PathProgramCache]: Analyzing trace with hash 483936327, now seen corresponding path program 1 times [2023-12-19 01:02:57,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:02:57,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911768100] [2023-12-19 01:02:57,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:02:57,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:02:57,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:02:58,057 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 01:02:58,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:02:58,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911768100] [2023-12-19 01:02:58,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911768100] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:02:58,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:02:58,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:02:58,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24815097] [2023-12-19 01:02:58,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:02:58,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:02:58,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:02:58,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:02:58,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:02:58,059 INFO L87 Difference]: Start difference. First operand 15424 states and 22576 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 01:02:58,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:02:58,984 INFO L93 Difference]: Finished difference Result 56142 states and 81687 transitions. [2023-12-19 01:02:58,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 01:02:58,984 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 01:02:58,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:02:59,066 INFO L225 Difference]: With dead ends: 56142 [2023-12-19 01:02:59,067 INFO L226 Difference]: Without dead ends: 49580 [2023-12-19 01:02:59,079 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 01:02:59,080 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 01:02:59,080 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 01:02:59,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49580 states. [2023-12-19 01:02:59,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49580 to 25280. [2023-12-19 01:02:59,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25280 states, 25278 states have (on average 1.4501147242661603) internal successors, (36656), 25279 states have internal predecessors, (36656), 0 states have call successors, (0), 0 states 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 01:02:59,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25280 states to 25280 states and 36656 transitions. [2023-12-19 01:02:59,920 INFO L78 Accepts]: Start accepts. Automaton has 25280 states and 36656 transitions. Word has length 86 [2023-12-19 01:02:59,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:02:59,920 INFO L495 AbstractCegarLoop]: Abstraction has 25280 states and 36656 transitions. [2023-12-19 01:02:59,920 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 01:02:59,920 INFO L276 IsEmpty]: Start isEmpty. Operand 25280 states and 36656 transitions. [2023-12-19 01:02:59,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-19 01:02:59,922 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:02:59,922 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 01:02:59,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 01:02:59,922 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:02:59,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:02:59,923 INFO L85 PathProgramCache]: Analyzing trace with hash -141719737, now seen corresponding path program 1 times [2023-12-19 01:02:59,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:02:59,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885745894] [2023-12-19 01:02:59,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:02:59,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:02:59,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:03:00,075 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 01:03:00,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:03:00,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885745894] [2023-12-19 01:03:00,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885745894] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:03:00,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:03:00,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:03:00,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377426730] [2023-12-19 01:03:00,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:03:00,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:03:00,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:03:00,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:03:00,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:03:00,078 INFO L87 Difference]: Start difference. First operand 25280 states and 36656 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 01:03:01,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:03:01,463 INFO L93 Difference]: Finished difference Result 62702 states and 91127 transitions. [2023-12-19 01:03:01,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 01:03:01,464 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 01:03:01,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:03:01,555 INFO L225 Difference]: With dead ends: 62702 [2023-12-19 01:03:01,555 INFO L226 Difference]: Without dead ends: 56140 [2023-12-19 01:03:01,573 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 01:03:01,573 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 01:03:01,574 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 01:03:01,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56140 states. [2023-12-19 01:03:02,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56140 to 31840. [2023-12-19 01:03:02,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31840 states, 31838 states have (on average 1.4478296375400466) internal successors, (46096), 31839 states have internal predecessors, (46096), 0 states have call successors, (0), 0 states 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 01:03:02,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31840 states to 31840 states and 46096 transitions. [2023-12-19 01:03:02,601 INFO L78 Accepts]: Start accepts. Automaton has 31840 states and 46096 transitions. Word has length 86 [2023-12-19 01:03:02,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:03:02,602 INFO L495 AbstractCegarLoop]: Abstraction has 31840 states and 46096 transitions. [2023-12-19 01:03:02,602 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 01:03:02,603 INFO L276 IsEmpty]: Start isEmpty. Operand 31840 states and 46096 transitions. [2023-12-19 01:03:02,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-19 01:03:02,605 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:03:02,605 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 01:03:02,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 01:03:02,605 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:03:02,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:03:02,606 INFO L85 PathProgramCache]: Analyzing trace with hash 747013703, now seen corresponding path program 1 times [2023-12-19 01:03:02,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:03:02,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230439461] [2023-12-19 01:03:02,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:03:02,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:03:02,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:03:02,734 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 01:03:02,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:03:02,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230439461] [2023-12-19 01:03:02,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230439461] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:03:02,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:03:02,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:03:02,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384404224] [2023-12-19 01:03:02,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:03:02,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:03:02,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:03:02,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:03:02,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:03:02,736 INFO L87 Difference]: Start difference. First operand 31840 states and 46096 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 01:03:04,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:03:04,172 INFO L93 Difference]: Finished difference Result 69262 states and 100567 transitions. [2023-12-19 01:03:04,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 01:03:04,172 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 01:03:04,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:03:04,265 INFO L225 Difference]: With dead ends: 69262 [2023-12-19 01:03:04,265 INFO L226 Difference]: Without dead ends: 62700 [2023-12-19 01:03:04,283 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 01:03:04,284 INFO L413 NwaCegarLoop]: 1633 mSDtfsCounter, 8090 mSDsluCounter, 2243 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8090 SdHoareTripleChecker+Valid, 3876 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:03:04,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8090 Valid, 3876 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:03:04,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62700 states. [2023-12-19 01:03:05,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62700 to 38400. [2023-12-19 01:03:05,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38400 states, 38398 states have (on average 1.446325329444242) internal successors, (55536), 38399 states have internal predecessors, (55536), 0 states have call successors, (0), 0 states 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 01:03:05,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38400 states to 38400 states and 55536 transitions. [2023-12-19 01:03:05,680 INFO L78 Accepts]: Start accepts. Automaton has 38400 states and 55536 transitions. Word has length 86 [2023-12-19 01:03:05,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:03:05,680 INFO L495 AbstractCegarLoop]: Abstraction has 38400 states and 55536 transitions. [2023-12-19 01:03:05,680 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 01:03:05,681 INFO L276 IsEmpty]: Start isEmpty. Operand 38400 states and 55536 transitions. [2023-12-19 01:03:05,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-19 01:03:05,683 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:03:05,683 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 01:03:05,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 01:03:05,683 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:03:05,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:03:05,684 INFO L85 PathProgramCache]: Analyzing trace with hash 712575559, now seen corresponding path program 1 times [2023-12-19 01:03:05,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:03:05,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528418528] [2023-12-19 01:03:05,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:03:05,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:03:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:03:05,834 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 01:03:05,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:03:05,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528418528] [2023-12-19 01:03:05,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528418528] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:03:05,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:03:05,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:03:05,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654324312] [2023-12-19 01:03:05,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:03:05,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:03:05,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:03:05,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:03:05,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:03:05,836 INFO L87 Difference]: Start difference. First operand 38400 states and 55536 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 01:03:07,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:03:07,567 INFO L93 Difference]: Finished difference Result 75822 states and 110007 transitions. [2023-12-19 01:03:07,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 01:03:07,590 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 01:03:07,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:03:07,692 INFO L225 Difference]: With dead ends: 75822 [2023-12-19 01:03:07,693 INFO L226 Difference]: Without dead ends: 69260 [2023-12-19 01:03:07,701 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 01:03:07,701 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 01:03:07,701 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 01:03:07,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69260 states. [2023-12-19 01:03:09,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69260 to 44960. [2023-12-19 01:03:09,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44960 states, 44958 states have (on average 1.4452600204635437) internal successors, (64976), 44959 states have internal predecessors, (64976), 0 states have call successors, (0), 0 states 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 01:03:09,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44960 states to 44960 states and 64976 transitions. [2023-12-19 01:03:09,113 INFO L78 Accepts]: Start accepts. Automaton has 44960 states and 64976 transitions. Word has length 86 [2023-12-19 01:03:09,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:03:09,114 INFO L495 AbstractCegarLoop]: Abstraction has 44960 states and 64976 transitions. [2023-12-19 01:03:09,114 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 01:03:09,114 INFO L276 IsEmpty]: Start isEmpty. Operand 44960 states and 64976 transitions. [2023-12-19 01:03:09,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-19 01:03:09,123 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:03:09,123 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 01:03:09,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 01:03:09,124 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:03:09,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:03:09,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1343316655, now seen corresponding path program 1 times [2023-12-19 01:03:09,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:03:09,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721251260] [2023-12-19 01:03:09,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:03:09,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:03:09,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:03:09,214 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 01:03:09,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:03:09,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721251260] [2023-12-19 01:03:09,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721251260] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:03:09,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:03:09,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:03:09,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154072874] [2023-12-19 01:03:09,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:03:09,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:03:09,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:03:09,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:03:09,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:03:09,216 INFO L87 Difference]: Start difference. First operand 44960 states and 64976 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 01:03:10,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:03:10,101 INFO L93 Difference]: Finished difference Result 74937 states and 108680 transitions. [2023-12-19 01:03:10,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:03:10,102 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 01:03:10,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:03:10,141 INFO L225 Difference]: With dead ends: 74937 [2023-12-19 01:03:10,142 INFO L226 Difference]: Without dead ends: 32279 [2023-12-19 01:03:10,174 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 01:03:10,175 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 01:03:10,175 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 01:03:10,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32279 states. [2023-12-19 01:03:11,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32279 to 32277. [2023-12-19 01:03:11,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32277 states, 32275 states have (on average 1.4526723470178156) internal successors, (46885), 32276 states have internal predecessors, (46885), 0 states have call successors, (0), 0 states 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 01:03:11,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32277 states to 32277 states and 46885 transitions. [2023-12-19 01:03:11,076 INFO L78 Accepts]: Start accepts. Automaton has 32277 states and 46885 transitions. Word has length 88 [2023-12-19 01:03:11,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:03:11,076 INFO L495 AbstractCegarLoop]: Abstraction has 32277 states and 46885 transitions. [2023-12-19 01:03:11,076 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 01:03:11,081 INFO L276 IsEmpty]: Start isEmpty. Operand 32277 states and 46885 transitions. [2023-12-19 01:03:11,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-19 01:03:11,083 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:03:11,083 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 01:03:11,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 01:03:11,083 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:03:11,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:03:11,084 INFO L85 PathProgramCache]: Analyzing trace with hash 2082755052, now seen corresponding path program 1 times [2023-12-19 01:03:11,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:03:11,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555938948] [2023-12-19 01:03:11,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:03:11,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:03:11,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:03:11,208 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 01:03:11,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:03:11,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555938948] [2023-12-19 01:03:11,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555938948] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:03:11,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:03:11,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:03:11,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671517985] [2023-12-19 01:03:11,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:03:11,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:03:11,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:03:11,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:03:11,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:03:11,209 INFO L87 Difference]: Start difference. First operand 32277 states and 46885 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 01:03:12,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:03:12,606 INFO L93 Difference]: Finished difference Result 59939 states and 87212 transitions. [2023-12-19 01:03:12,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 01:03:12,606 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 01:03:12,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:03:12,679 INFO L225 Difference]: With dead ends: 59939 [2023-12-19 01:03:12,679 INFO L226 Difference]: Without dead ends: 55329 [2023-12-19 01:03:12,690 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 01:03:12,695 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 01:03:12,696 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 01:03:12,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55329 states. [2023-12-19 01:03:13,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55329 to 36885. [2023-12-19 01:03:13,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36885 states, 36883 states have (on average 1.4516443890139088) internal successors, (53541), 36884 states have internal predecessors, (53541), 0 states have call successors, (0), 0 states 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 01:03:13,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36885 states to 36885 states and 53541 transitions. [2023-12-19 01:03:13,952 INFO L78 Accepts]: Start accepts. Automaton has 36885 states and 53541 transitions. Word has length 88 [2023-12-19 01:03:13,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:03:13,952 INFO L495 AbstractCegarLoop]: Abstraction has 36885 states and 53541 transitions. [2023-12-19 01:03:13,952 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 01:03:13,952 INFO L276 IsEmpty]: Start isEmpty. Operand 36885 states and 53541 transitions. [2023-12-19 01:03:13,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-19 01:03:13,957 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:03:13,957 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 01:03:13,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 01:03:13,958 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:03:13,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:03:13,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1555080975, now seen corresponding path program 1 times [2023-12-19 01:03:13,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:03:13,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820007857] [2023-12-19 01:03:13,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:03:13,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:03:14,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:03:14,062 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 01:03:14,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:03:14,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820007857] [2023-12-19 01:03:14,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820007857] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:03:14,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:03:14,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:03:14,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455140378] [2023-12-19 01:03:14,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:03:14,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:03:14,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:03:14,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:03:14,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:03:14,064 INFO L87 Difference]: Start difference. First operand 36885 states and 53541 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 01:03:14,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:03:14,483 INFO L93 Difference]: Finished difference Result 54169 states and 78503 transitions. [2023-12-19 01:03:14,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:03:14,483 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 01:03:14,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:03:14,503 INFO L225 Difference]: With dead ends: 54169 [2023-12-19 01:03:14,503 INFO L226 Difference]: Without dead ends: 19607 [2023-12-19 01:03:14,525 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 01:03:14,525 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 01:03:14,525 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 01:03:14,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19607 states. [2023-12-19 01:03:15,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19607 to 19605. [2023-12-19 01:03:15,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19605 states, 19603 states have (on average 1.4457480997806458) internal successors, (28341), 19604 states have internal predecessors, (28341), 0 states have call successors, (0), 0 states 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 01:03:15,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19605 states to 19605 states and 28341 transitions. [2023-12-19 01:03:15,150 INFO L78 Accepts]: Start accepts. Automaton has 19605 states and 28341 transitions. Word has length 89 [2023-12-19 01:03:15,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:03:15,150 INFO L495 AbstractCegarLoop]: Abstraction has 19605 states and 28341 transitions. [2023-12-19 01:03:15,150 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 01:03:15,150 INFO L276 IsEmpty]: Start isEmpty. Operand 19605 states and 28341 transitions. [2023-12-19 01:03:15,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-19 01:03:15,152 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:03:15,152 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 01:03:15,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 01:03:15,152 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:03:15,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:03:15,153 INFO L85 PathProgramCache]: Analyzing trace with hash 433774111, now seen corresponding path program 1 times [2023-12-19 01:03:15,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:03:15,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454360402] [2023-12-19 01:03:15,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:03:15,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:03:15,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:03:15,218 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 01:03:15,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:03:15,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454360402] [2023-12-19 01:03:15,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454360402] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:03:15,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:03:15,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:03:15,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675483851] [2023-12-19 01:03:15,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:03:15,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:03:15,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:03:15,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:03:15,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:03:15,220 INFO L87 Difference]: Start difference. First operand 19605 states and 28341 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 01:03:15,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:03:15,467 INFO L93 Difference]: Finished difference Result 28249 states and 40703 transitions. [2023-12-19 01:03:15,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:03:15,467 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 01:03:15,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:03:15,480 INFO L225 Difference]: With dead ends: 28249 [2023-12-19 01:03:15,481 INFO L226 Difference]: Without dead ends: 10967 [2023-12-19 01:03:15,492 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 01:03:15,493 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 01:03:15,493 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 01:03:15,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10967 states. [2023-12-19 01:03:15,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10967 to 10965. [2023-12-19 01:03:15,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10965 states, 10963 states have (on average 1.4467755176502781) internal successors, (15861), 10964 states have internal predecessors, (15861), 0 states have call successors, (0), 0 states 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 01:03:15,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10965 states to 10965 states and 15861 transitions. [2023-12-19 01:03:15,735 INFO L78 Accepts]: Start accepts. Automaton has 10965 states and 15861 transitions. Word has length 91 [2023-12-19 01:03:15,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:03:15,735 INFO L495 AbstractCegarLoop]: Abstraction has 10965 states and 15861 transitions. [2023-12-19 01:03:15,735 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 01:03:15,735 INFO L276 IsEmpty]: Start isEmpty. Operand 10965 states and 15861 transitions. [2023-12-19 01:03:15,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-19 01:03:15,737 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:03:15,737 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 01:03:15,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 01:03:15,737 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:03:15,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:03:15,737 INFO L85 PathProgramCache]: Analyzing trace with hash 475149517, now seen corresponding path program 1 times [2023-12-19 01:03:15,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:03:15,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474208991] [2023-12-19 01:03:15,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:03:15,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:03:15,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:03:15,877 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 01:03:15,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:03:15,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474208991] [2023-12-19 01:03:15,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474208991] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:03:15,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:03:15,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:03:15,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437666870] [2023-12-19 01:03:15,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:03:15,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:03:15,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:03:15,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:03:15,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:03:15,878 INFO L87 Difference]: Start difference. First operand 10965 states and 15861 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 01:03:15,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:03:15,990 INFO L93 Difference]: Finished difference Result 15289 states and 21983 transitions. [2023-12-19 01:03:15,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:03:15,991 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 01:03:15,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:03:15,997 INFO L225 Difference]: With dead ends: 15289 [2023-12-19 01:03:15,997 INFO L226 Difference]: Without dead ends: 6647 [2023-12-19 01:03:16,002 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 01:03:16,003 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 01:03:16,003 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 01:03:16,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6647 states. [2023-12-19 01:03:16,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6647 to 6645. [2023-12-19 01:03:16,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6645 states, 6643 states have (on average 1.4573234984193888) internal successors, (9681), 6644 states have internal predecessors, (9681), 0 states have call successors, (0), 0 states 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 01:03:16,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6645 states to 6645 states and 9681 transitions. [2023-12-19 01:03:16,133 INFO L78 Accepts]: Start accepts. Automaton has 6645 states and 9681 transitions. Word has length 93 [2023-12-19 01:03:16,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:03:16,133 INFO L495 AbstractCegarLoop]: Abstraction has 6645 states and 9681 transitions. [2023-12-19 01:03:16,133 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 01:03:16,134 INFO L276 IsEmpty]: Start isEmpty. Operand 6645 states and 9681 transitions. [2023-12-19 01:03:16,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-19 01:03:16,134 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:03:16,135 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 01:03:16,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 01:03:16,135 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:03:16,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:03:16,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1948500741, now seen corresponding path program 1 times [2023-12-19 01:03:16,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:03:16,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552109070] [2023-12-19 01:03:16,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:03:16,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:03:16,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:03:16,188 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 01:03:16,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:03:16,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552109070] [2023-12-19 01:03:16,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552109070] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:03:16,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:03:16,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:03:16,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510799556] [2023-12-19 01:03:16,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:03:16,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:03:16,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:03:16,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:03:16,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:03:16,190 INFO L87 Difference]: Start difference. First operand 6645 states and 9681 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 01:03:16,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:03:16,258 INFO L93 Difference]: Finished difference Result 8809 states and 12713 transitions. [2023-12-19 01:03:16,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:03:16,258 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 01:03:16,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:03:16,262 INFO L225 Difference]: With dead ends: 8809 [2023-12-19 01:03:16,262 INFO L226 Difference]: Without dead ends: 4487 [2023-12-19 01:03:16,265 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 01:03:16,266 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 01:03:16,266 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 01:03:16,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4487 states. [2023-12-19 01:03:16,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4487 to 4485. [2023-12-19 01:03:16,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4485 states, 4483 states have (on average 1.4769127816194512) internal successors, (6621), 4484 states have internal predecessors, (6621), 0 states have call successors, (0), 0 states 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 01:03:16,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4485 states to 4485 states and 6621 transitions. [2023-12-19 01:03:16,343 INFO L78 Accepts]: Start accepts. Automaton has 4485 states and 6621 transitions. Word has length 95 [2023-12-19 01:03:16,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:03:16,344 INFO L495 AbstractCegarLoop]: Abstraction has 4485 states and 6621 transitions. [2023-12-19 01:03:16,344 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 01:03:16,344 INFO L276 IsEmpty]: Start isEmpty. Operand 4485 states and 6621 transitions. [2023-12-19 01:03:16,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-19 01:03:16,345 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:03:16,345 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 01:03:16,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 01:03:16,346 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:03:16,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:03:16,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1337448105, now seen corresponding path program 1 times [2023-12-19 01:03:16,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:03:16,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578114932] [2023-12-19 01:03:16,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:03:16,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:03:16,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:03:16,407 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 01:03:16,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:03:16,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578114932] [2023-12-19 01:03:16,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578114932] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:03:16,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:03:16,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:03:16,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136253327] [2023-12-19 01:03:16,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:03:16,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:03:16,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:03:16,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:03:16,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:03:16,409 INFO L87 Difference]: Start difference. First operand 4485 states and 6621 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 01:03:16,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:03:16,452 INFO L93 Difference]: Finished difference Result 5569 states and 8123 transitions. [2023-12-19 01:03:16,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:03:16,453 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 01:03:16,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:03:16,456 INFO L225 Difference]: With dead ends: 5569 [2023-12-19 01:03:16,457 INFO L226 Difference]: Without dead ends: 3407 [2023-12-19 01:03:16,459 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 01:03:16,459 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 01:03:16,459 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 01:03:16,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3407 states. [2023-12-19 01:03:16,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3407 to 3405. [2023-12-19 01:03:16,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3405 states, 3403 states have (on average 1.5004407875404056) internal successors, (5106), 3404 states have internal predecessors, (5106), 0 states have call successors, (0), 0 states 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 01:03:16,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3405 states to 3405 states and 5106 transitions. [2023-12-19 01:03:16,512 INFO L78 Accepts]: Start accepts. Automaton has 3405 states and 5106 transitions. Word has length 97 [2023-12-19 01:03:16,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:03:16,512 INFO L495 AbstractCegarLoop]: Abstraction has 3405 states and 5106 transitions. [2023-12-19 01:03:16,513 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 01:03:16,513 INFO L276 IsEmpty]: Start isEmpty. Operand 3405 states and 5106 transitions. [2023-12-19 01:03:16,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-19 01:03:16,513 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:03:16,513 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 01:03:16,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-19 01:03:16,514 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:03:16,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:03:16,514 INFO L85 PathProgramCache]: Analyzing trace with hash 54256087, now seen corresponding path program 1 times [2023-12-19 01:03:16,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:03:16,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86187177] [2023-12-19 01:03:16,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:03:16,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:03:16,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:03:17,319 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 01:03:17,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:03:17,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86187177] [2023-12-19 01:03:17,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86187177] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:03:17,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425130769] [2023-12-19 01:03:17,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:03:17,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:03:17,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:03:17,322 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 01:03:17,323 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 01:03:17,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:03:17,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 01:03:17,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:03:17,584 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 01:03:17,584 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:03:17,711 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 01:03:17,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425130769] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:03:17,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:03:17,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4, 4] total 17 [2023-12-19 01:03:17,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890477647] [2023-12-19 01:03:17,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:03:17,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-19 01:03:17,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:03:17,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-19 01:03:17,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:03:17,713 INFO L87 Difference]: Start difference. First operand 3405 states and 5106 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 01:03:20,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:03:20,111 INFO L93 Difference]: Finished difference Result 12236 states and 17048 transitions. [2023-12-19 01:03:20,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-19 01:03:20,112 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 01:03:20,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:03:20,122 INFO L225 Difference]: With dead ends: 12236 [2023-12-19 01:03:20,122 INFO L226 Difference]: Without dead ends: 11154 [2023-12-19 01:03:20,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1091 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=720, Invalid=3062, Unknown=0, NotChecked=0, Total=3782 [2023-12-19 01:03:20,126 INFO L413 NwaCegarLoop]: 1527 mSDtfsCounter, 15579 mSDsluCounter, 4955 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15579 SdHoareTripleChecker+Valid, 6482 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:03:20,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15579 Valid, 6482 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 01:03:20,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11154 states. [2023-12-19 01:03:20,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11154 to 10810. [2023-12-19 01:03:20,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10810 states, 10808 states have (on average 1.3677831236121392) internal successors, (14783), 10809 states have internal predecessors, (14783), 0 states have call successors, (0), 0 states 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 01:03:20,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10810 states to 10810 states and 14783 transitions. [2023-12-19 01:03:20,382 INFO L78 Accepts]: Start accepts. Automaton has 10810 states and 14783 transitions. Word has length 99 [2023-12-19 01:03:20,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:03:20,383 INFO L495 AbstractCegarLoop]: Abstraction has 10810 states and 14783 transitions. [2023-12-19 01:03:20,383 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 01:03:20,383 INFO L276 IsEmpty]: Start isEmpty. Operand 10810 states and 14783 transitions. [2023-12-19 01:03:20,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 01:03:20,384 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:03:20,384 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 01:03:20,392 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 01:03:20,589 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 01:03:20,590 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:03:20,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:03:20,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1164591634, now seen corresponding path program 1 times [2023-12-19 01:03:20,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:03:20,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800590362] [2023-12-19 01:03:20,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:03:20,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:03:20,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:03:20,881 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 01:03:20,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:03:20,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800590362] [2023-12-19 01:03:20,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800590362] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:03:20,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906278507] [2023-12-19 01:03:20,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:03:20,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:03:20,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:03:20,883 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 01:03:20,910 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 01:03:20,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:03:20,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 01:03:20,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:03:21,407 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 01:03:21,408 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:03:22,427 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 01:03:22,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906278507] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:03:22,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:03:22,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 27 [2023-12-19 01:03:22,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097590527] [2023-12-19 01:03:22,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:03:22,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-19 01:03:22,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:03:22,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-19 01:03:22,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2023-12-19 01:03:22,429 INFO L87 Difference]: Start difference. First operand 10810 states and 14783 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 01:03:23,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:03:23,593 INFO L93 Difference]: Finished difference Result 25808 states and 34219 transitions. [2023-12-19 01:03:23,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 01:03:23,594 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 01:03:23,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:03:23,615 INFO L225 Difference]: With dead ends: 25808 [2023-12-19 01:03:23,615 INFO L226 Difference]: Without dead ends: 17641 [2023-12-19 01:03:23,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=329, Invalid=1231, Unknown=0, NotChecked=0, Total=1560 [2023-12-19 01:03:23,626 INFO L413 NwaCegarLoop]: 1525 mSDtfsCounter, 8041 mSDsluCounter, 11230 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8041 SdHoareTripleChecker+Valid, 12755 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:03:23,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8041 Valid, 12755 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 01:03:23,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17641 states. [2023-12-19 01:03:24,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17641 to 17125. [2023-12-19 01:03:24,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17125 states, 17123 states have (on average 1.3360392454593237) internal successors, (22877), 17124 states have internal predecessors, (22877), 0 states have call successors, (0), 0 states 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 01:03:24,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17125 states to 17125 states and 22877 transitions. [2023-12-19 01:03:24,130 INFO L78 Accepts]: Start accepts. Automaton has 17125 states and 22877 transitions. Word has length 100 [2023-12-19 01:03:24,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:03:24,130 INFO L495 AbstractCegarLoop]: Abstraction has 17125 states and 22877 transitions. [2023-12-19 01:03:24,130 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 01:03:24,130 INFO L276 IsEmpty]: Start isEmpty. Operand 17125 states and 22877 transitions. [2023-12-19 01:03:24,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 01:03:24,132 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:03:24,132 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 01:03:24,140 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-19 01:03:24,341 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 01:03:24,341 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:03:24,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:03:24,341 INFO L85 PathProgramCache]: Analyzing trace with hash -531612434, now seen corresponding path program 1 times [2023-12-19 01:03:24,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:03:24,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843194400] [2023-12-19 01:03:24,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:03:24,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:03:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:03:24,985 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 01:03:24,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:03:24,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843194400] [2023-12-19 01:03:24,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843194400] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:03:24,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252367387] [2023-12-19 01:03:24,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:03:24,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:03:24,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:03:24,987 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 01:03:24,989 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 01:03:25,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:03:25,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 01:03:25,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:03:25,480 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 01:03:25,480 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:03:26,165 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 01:03:26,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252367387] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:03:26,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:03:26,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 25 [2023-12-19 01:03:26,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12556890] [2023-12-19 01:03:26,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:03:26,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-19 01:03:26,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:03:26,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-19 01:03:26,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2023-12-19 01:03:26,167 INFO L87 Difference]: Start difference. First operand 17125 states and 22877 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 01:03:27,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:03:27,084 INFO L93 Difference]: Finished difference Result 30270 states and 39819 transitions. [2023-12-19 01:03:27,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:03:27,085 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 01:03:27,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:03:27,103 INFO L225 Difference]: With dead ends: 30270 [2023-12-19 01:03:27,103 INFO L226 Difference]: Without dead ends: 18161 [2023-12-19 01:03:27,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=290, Invalid=1042, Unknown=0, NotChecked=0, Total=1332 [2023-12-19 01:03:27,113 INFO L413 NwaCegarLoop]: 1525 mSDtfsCounter, 15543 mSDsluCounter, 7851 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15543 SdHoareTripleChecker+Valid, 9376 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:03:27,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15543 Valid, 9376 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 01:03:27,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18161 states. [2023-12-19 01:03:27,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18161 to 16093. [2023-12-19 01:03:27,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16093 states, 16091 states have (on average 1.3191224908333852) internal successors, (21226), 16092 states have internal predecessors, (21226), 0 states have call successors, (0), 0 states 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 01:03:27,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16093 states to 16093 states and 21226 transitions. [2023-12-19 01:03:27,618 INFO L78 Accepts]: Start accepts. Automaton has 16093 states and 21226 transitions. Word has length 100 [2023-12-19 01:03:27,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:03:27,618 INFO L495 AbstractCegarLoop]: Abstraction has 16093 states and 21226 transitions. [2023-12-19 01:03:27,618 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 01:03:27,618 INFO L276 IsEmpty]: Start isEmpty. Operand 16093 states and 21226 transitions. [2023-12-19 01:03:27,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 01:03:27,619 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:03:27,619 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 01:03:27,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 01:03:27,826 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 01:03:27,826 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:03:27,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:03:27,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1054216644, now seen corresponding path program 1 times [2023-12-19 01:03:27,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:03:27,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223253345] [2023-12-19 01:03:27,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:03:27,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:03:27,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:03:28,204 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 01:03:28,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:03:28,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223253345] [2023-12-19 01:03:28,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223253345] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:03:28,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810110948] [2023-12-19 01:03:28,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:03:28,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:03:28,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:03:28,206 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 01:03:28,233 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 01:03:28,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:03:28,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 01:03:28,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:03:28,778 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 01:03:28,778 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:03:29,587 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 01:03:29,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810110948] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:03:29,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:03:29,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-12-19 01:03:29,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934510742] [2023-12-19 01:03:29,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:03:29,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-19 01:03:29,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:03:29,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-19 01:03:29,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2023-12-19 01:03:29,590 INFO L87 Difference]: Start difference. First operand 16093 states and 21226 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 01:03:31,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:03:31,311 INFO L93 Difference]: Finished difference Result 45017 states and 58184 transitions. [2023-12-19 01:03:31,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-19 01:03:31,311 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 01:03:31,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:03:31,344 INFO L225 Difference]: With dead ends: 45017 [2023-12-19 01:03:31,345 INFO L226 Difference]: Without dead ends: 31607 [2023-12-19 01:03:31,355 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 01:03:31,355 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 8014 mSDsluCounter, 6587 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8014 SdHoareTripleChecker+Valid, 8138 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:03:31,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8014 Valid, 8138 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 01:03:31,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31607 states. [2023-12-19 01:03:32,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31607 to 30227. [2023-12-19 01:03:32,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30227 states, 30225 states have (on average 1.2890322580645162) internal successors, (38961), 30226 states have internal predecessors, (38961), 0 states have call successors, (0), 0 states 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 01:03:32,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30227 states to 30227 states and 38961 transitions. [2023-12-19 01:03:32,455 INFO L78 Accepts]: Start accepts. Automaton has 30227 states and 38961 transitions. Word has length 100 [2023-12-19 01:03:32,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:03:32,455 INFO L495 AbstractCegarLoop]: Abstraction has 30227 states and 38961 transitions. [2023-12-19 01:03:32,455 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 01:03:32,455 INFO L276 IsEmpty]: Start isEmpty. Operand 30227 states and 38961 transitions. [2023-12-19 01:03:32,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-19 01:03:32,457 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:03:32,457 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 01:03:32,465 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-19 01:03:32,663 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 01:03:32,664 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:03:32,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:03:32,665 INFO L85 PathProgramCache]: Analyzing trace with hash -410646267, now seen corresponding path program 1 times [2023-12-19 01:03:32,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:03:32,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699793291] [2023-12-19 01:03:32,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:03:32,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:03:32,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:03:32,962 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 01:03:32,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:03:32,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699793291] [2023-12-19 01:03:32,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699793291] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:03:32,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426132467] [2023-12-19 01:03:32,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:03:32,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:03:32,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:03:32,986 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 01:03:33,012 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 01:03:33,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:03:33,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 01:03:33,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:03:33,677 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 01:03:33,677 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:03:34,373 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 01:03:34,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426132467] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:03:34,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:03:34,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-12-19 01:03:34,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937143216] [2023-12-19 01:03:34,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:03:34,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-19 01:03:34,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:03:34,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-19 01:03:34,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=624, Unknown=0, NotChecked=0, Total=756 [2023-12-19 01:03:34,375 INFO L87 Difference]: Start difference. First operand 30227 states and 38961 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 01:03:36,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:03:36,774 INFO L93 Difference]: Finished difference Result 88495 states and 112749 transitions. [2023-12-19 01:03:36,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-19 01:03:36,775 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 01:03:36,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:03:36,871 INFO L225 Difference]: With dead ends: 88495 [2023-12-19 01:03:36,871 INFO L226 Difference]: Without dead ends: 61447 [2023-12-19 01:03:36,891 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 01:03:36,892 INFO L413 NwaCegarLoop]: 1546 mSDtfsCounter, 12356 mSDsluCounter, 5118 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12356 SdHoareTripleChecker+Valid, 6664 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:03:36,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12356 Valid, 6664 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 01:03:36,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61447 states. [2023-12-19 01:03:39,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61447 to 58731. [2023-12-19 01:03:39,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58731 states, 58729 states have (on average 1.266665531509135) internal successors, (74390), 58730 states have internal predecessors, (74390), 0 states have call successors, (0), 0 states 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 01:03:39,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58731 states to 58731 states and 74390 transitions. [2023-12-19 01:03:39,200 INFO L78 Accepts]: Start accepts. Automaton has 58731 states and 74390 transitions. Word has length 101 [2023-12-19 01:03:39,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:03:39,200 INFO L495 AbstractCegarLoop]: Abstraction has 58731 states and 74390 transitions. [2023-12-19 01:03:39,200 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 01:03:39,200 INFO L276 IsEmpty]: Start isEmpty. Operand 58731 states and 74390 transitions. [2023-12-19 01:03:39,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-19 01:03:39,202 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:03:39,207 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 01:03:39,214 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-19 01:03:39,408 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 01:03:39,409 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:03:39,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:03:39,409 INFO L85 PathProgramCache]: Analyzing trace with hash -761997076, now seen corresponding path program 1 times [2023-12-19 01:03:39,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:03:39,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884589018] [2023-12-19 01:03:39,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:03:39,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:03:39,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:03:39,809 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 01:03:39,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:03:39,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884589018] [2023-12-19 01:03:39,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884589018] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:03:39,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951404193] [2023-12-19 01:03:39,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:03:39,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:03:39,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:03:39,811 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 01:03:39,827 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 01:03:39,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:03:39,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-19 01:03:39,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:03:40,887 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 01:03:40,887 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:03:41,689 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 01:03:41,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951404193] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:03:41,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:03:41,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 30 [2023-12-19 01:03:41,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431410757] [2023-12-19 01:03:41,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:03:41,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-19 01:03:41,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:03:41,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-19 01:03:41,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=773, Unknown=0, NotChecked=0, Total=870 [2023-12-19 01:03:41,692 INFO L87 Difference]: Start difference. First operand 58731 states and 74390 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 01:03:48,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:03:48,702 INFO L93 Difference]: Finished difference Result 175939 states and 218992 transitions. [2023-12-19 01:03:48,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-19 01:03:48,703 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 01:03:48,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:03:48,869 INFO L225 Difference]: With dead ends: 175939 [2023-12-19 01:03:48,869 INFO L226 Difference]: Without dead ends: 126317 [2023-12-19 01:03:49,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1421 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1143, Invalid=4709, Unknown=0, NotChecked=0, Total=5852 [2023-12-19 01:03:49,014 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 12872 mSDsluCounter, 12835 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12872 SdHoareTripleChecker+Valid, 14371 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:03:49,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12872 Valid, 14371 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1182 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 01:03:49,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126317 states. [2023-12-19 01:03:53,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126317 to 108621. [2023-12-19 01:03:53,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108621 states, 108619 states have (on average 1.2463473241329786) internal successors, (135377), 108620 states have internal predecessors, (135377), 0 states have call successors, (0), 0 states 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 01:03:53,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108621 states to 108621 states and 135377 transitions. [2023-12-19 01:03:53,593 INFO L78 Accepts]: Start accepts. Automaton has 108621 states and 135377 transitions. Word has length 102 [2023-12-19 01:03:53,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:03:53,593 INFO L495 AbstractCegarLoop]: Abstraction has 108621 states and 135377 transitions. [2023-12-19 01:03:53,593 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 01:03:53,593 INFO L276 IsEmpty]: Start isEmpty. Operand 108621 states and 135377 transitions. [2023-12-19 01:03:53,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-19 01:03:53,596 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:03:53,596 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 01:03:53,601 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 01:03:53,801 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 01:03:53,802 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:03:53,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:03:53,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1937262771, now seen corresponding path program 1 times [2023-12-19 01:03:53,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:03:53,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779372814] [2023-12-19 01:03:53,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:03:53,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:03:53,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:03:54,101 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 01:03:54,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:03:54,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779372814] [2023-12-19 01:03:54,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779372814] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:03:54,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970881954] [2023-12-19 01:03:54,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:03:54,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:03:54,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:03:54,103 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 01:03:54,104 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 01:03:54,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:03:54,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 01:03:54,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:03:55,001 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 01:03:55,001 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:03:55,901 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 01:03:55,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970881954] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:03:55,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:03:55,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 29 [2023-12-19 01:03:55,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859949422] [2023-12-19 01:03:55,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:03:55,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-19 01:03:55,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:03:55,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-19 01:03:55,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2023-12-19 01:03:55,907 INFO L87 Difference]: Start difference. First operand 108621 states and 135377 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 01:04:04,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:04:04,092 INFO L93 Difference]: Finished difference Result 321115 states and 398711 transitions. [2023-12-19 01:04:04,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-19 01:04:04,093 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 01:04:04,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:04:04,545 INFO L225 Difference]: With dead ends: 321115 [2023-12-19 01:04:04,545 INFO L226 Difference]: Without dead ends: 227023 [2023-12-19 01:04:04,604 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 01:04:04,604 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 11293 mSDsluCounter, 6564 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11293 SdHoareTripleChecker+Valid, 8104 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:04:04,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11293 Valid, 8104 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 01:04:04,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227023 states. [2023-12-19 01:04:13,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227023 to 215763. [2023-12-19 01:04:13,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215763 states, 215761 states have (on average 1.2322199099930016) internal successors, (265865), 215762 states have internal predecessors, (265865), 0 states have call successors, (0), 0 states 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 01:04:14,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215763 states to 215763 states and 265865 transitions. [2023-12-19 01:04:14,175 INFO L78 Accepts]: Start accepts. Automaton has 215763 states and 265865 transitions. Word has length 103 [2023-12-19 01:04:14,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:04:14,175 INFO L495 AbstractCegarLoop]: Abstraction has 215763 states and 265865 transitions. [2023-12-19 01:04:14,175 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 01:04:14,175 INFO L276 IsEmpty]: Start isEmpty. Operand 215763 states and 265865 transitions. [2023-12-19 01:04:14,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-19 01:04:14,179 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:04:14,180 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 01:04:14,187 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 01:04:14,385 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 01:04:14,385 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:04:14,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:04:14,387 INFO L85 PathProgramCache]: Analyzing trace with hash -840007196, now seen corresponding path program 1 times [2023-12-19 01:04:14,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:04:14,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093447404] [2023-12-19 01:04:14,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:04:14,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:04:14,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:04:15,194 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 01:04:15,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:04:15,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093447404] [2023-12-19 01:04:15,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093447404] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:04:15,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763416444] [2023-12-19 01:04:15,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:04:15,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:04:15,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:04:15,196 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 01:04:15,214 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 01:04:15,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:04:15,338 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 01:04:15,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:04:16,165 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 01:04:16,165 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:04:17,419 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 01:04:17,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763416444] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:04:17,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:04:17,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 15] total 38 [2023-12-19 01:04:17,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828310857] [2023-12-19 01:04:17,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:04:17,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-19 01:04:17,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:04:17,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-19 01:04:17,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1258, Unknown=0, NotChecked=0, Total=1406 [2023-12-19 01:04:17,422 INFO L87 Difference]: Start difference. First operand 215763 states and 265865 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 01:04:31,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:04:31,798 INFO L93 Difference]: Finished difference Result 334133 states and 409522 transitions. [2023-12-19 01:04:31,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-12-19 01:04:31,799 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 01:04:31,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:04:32,350 INFO L225 Difference]: With dead ends: 334133 [2023-12-19 01:04:32,350 INFO L226 Difference]: Without dead ends: 243513 [2023-12-19 01:04:32,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2794 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1980, Invalid=8120, Unknown=0, NotChecked=0, Total=10100 [2023-12-19 01:04:32,432 INFO L413 NwaCegarLoop]: 1563 mSDtfsCounter, 11360 mSDsluCounter, 21985 mSDsCounter, 0 mSdLazyCounter, 1935 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11360 SdHoareTripleChecker+Valid, 23548 SdHoareTripleChecker+Invalid, 2009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:04:32,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11360 Valid, 23548 Invalid, 2009 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [74 Valid, 1935 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 01:04:32,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243513 states. [2023-12-19 01:04:42,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243513 to 182801. [2023-12-19 01:04:42,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182801 states, 182799 states have (on average 1.2299574942970148) internal successors, (224835), 182800 states have internal predecessors, (224835), 0 states have call successors, (0), 0 states 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 01:04:42,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182801 states to 182801 states and 224835 transitions. [2023-12-19 01:04:42,875 INFO L78 Accepts]: Start accepts. Automaton has 182801 states and 224835 transitions. Word has length 104 [2023-12-19 01:04:42,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:04:42,876 INFO L495 AbstractCegarLoop]: Abstraction has 182801 states and 224835 transitions. [2023-12-19 01:04:42,876 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 01:04:42,876 INFO L276 IsEmpty]: Start isEmpty. Operand 182801 states and 224835 transitions. [2023-12-19 01:04:42,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-19 01:04:42,879 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:04:42,879 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 01:04:42,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-19 01:04:43,083 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 01:04:43,084 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:04:43,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:04:43,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1686899484, now seen corresponding path program 1 times [2023-12-19 01:04:43,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:04:43,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118046707] [2023-12-19 01:04:43,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:04:43,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:04:43,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:04:43,854 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 01:04:43,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:04:43,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118046707] [2023-12-19 01:04:43,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118046707] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:04:43,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507901198] [2023-12-19 01:04:43,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:04:43,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:04:43,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:04:43,865 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 01:04:43,866 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 01:04:43,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:04:44,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 73 conjunts are in the unsatisfiable core [2023-12-19 01:04:44,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:04:52,562 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 01:04:52,562 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:05:04,875 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 01:05:04,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507901198] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:05:04,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:05:04,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 32, 42] total 83 [2023-12-19 01:05:04,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023243330] [2023-12-19 01:05:04,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:05:04,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2023-12-19 01:05:04,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:05:04,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2023-12-19 01:05:04,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=865, Invalid=5941, Unknown=0, NotChecked=0, Total=6806 [2023-12-19 01:05:04,880 INFO L87 Difference]: Start difference. First operand 182801 states and 224835 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 01:14:57,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:14:57,767 INFO L93 Difference]: Finished difference Result 802834 states and 985831 transitions. [2023-12-19 01:14:57,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 557 states. [2023-12-19 01:14:57,767 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 01:14:57,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:14:59,274 INFO L225 Difference]: With dead ends: 802834 [2023-12-19 01:14:59,274 INFO L226 Difference]: Without dead ends: 725592 [2023-12-19 01:14:59,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 763 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 625 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183113 ImplicationChecksByTransitivity, 539.5s TimeCoverageRelationStatistics Valid=55999, Invalid=336503, Unknown=0, NotChecked=0, Total=392502 [2023-12-19 01:14:59,476 INFO L413 NwaCegarLoop]: 1627 mSDtfsCounter, 29829 mSDsluCounter, 32048 mSDsCounter, 0 mSdLazyCounter, 15039 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29829 SdHoareTripleChecker+Valid, 33675 SdHoareTripleChecker+Invalid, 15304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 15039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:14:59,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29829 Valid, 33675 Invalid, 15304 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [265 Valid, 15039 Invalid, 0 Unknown, 0 Unchecked, 21.2s Time] [2023-12-19 01:14:59,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725592 states.