/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.4.1.ufo.UNBOUNDED.pals+Problem12_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-18 23:42:26,897 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-18 23:42:26,958 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-18 23:42:26,964 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-18 23:42:26,965 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-18 23:42:27,001 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-18 23:42:27,001 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-18 23:42:27,002 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-18 23:42:27,002 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-18 23:42:27,006 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-18 23:42:27,006 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-18 23:42:27,007 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-18 23:42:27,007 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-18 23:42:27,008 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-18 23:42:27,008 INFO L153 SettingsManager]: * Use SBE=true [2023-12-18 23:42:27,008 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-18 23:42:27,009 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-18 23:42:27,009 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-18 23:42:27,009 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-18 23:42:27,009 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-18 23:42:27,009 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-18 23:42:27,010 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-18 23:42:27,010 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-18 23:42:27,010 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-18 23:42:27,010 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-18 23:42:27,010 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-18 23:42:27,011 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-18 23:42:27,011 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-18 23:42:27,011 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-18 23:42:27,012 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-18 23:42:27,012 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-18 23:42:27,013 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-18 23:42:27,013 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 23:42:27,013 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-18 23:42:27,013 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-18 23:42:27,013 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-18 23:42:27,013 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-18 23:42:27,013 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-18 23:42:27,014 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-18 23:42:27,014 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-18 23:42:27,014 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-18 23:42:27,014 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-18 23:42:27,014 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-18 23:42:27,014 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-18 23:42:27,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-18 23:42:27,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-18 23:42:27,260 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-18 23:42:27,261 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-18 23:42:27,261 INFO L274 PluginConnector]: CDTParser initialized [2023-12-18 23:42:27,262 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label05.c [2023-12-18 23:42:28,379 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-18 23:42:28,793 INFO L384 CDTParser]: Found 1 translation units. [2023-12-18 23:42:28,794 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label05.c [2023-12-18 23:42:28,827 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b50075459/eee8649519fe4609b32e0fe0f6cc32eb/FLAG57317028d [2023-12-18 23:42:28,843 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b50075459/eee8649519fe4609b32e0fe0f6cc32eb [2023-12-18 23:42:28,845 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-18 23:42:28,848 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-18 23:42:28,850 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-18 23:42:28,850 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-18 23:42:28,854 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-18 23:42:28,854 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 11:42:28" (1/1) ... [2023-12-18 23:42:28,855 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43a4a89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:42:28, skipping insertion in model container [2023-12-18 23:42:28,855 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 11:42:28" (1/1) ... [2023-12-18 23:42:28,961 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-18 23:42:29,298 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.4.1.ufo.UNBOUNDED.pals+Problem12_label05.c[8749,8762] [2023-12-18 23:42:29,387 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.4.1.ufo.UNBOUNDED.pals+Problem12_label05.c[15685,15698] [2023-12-18 23:42:30,114 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 23:42:30,126 INFO L202 MainTranslator]: Completed pre-run [2023-12-18 23:42:30,186 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.4.1.ufo.UNBOUNDED.pals+Problem12_label05.c[8749,8762] [2023-12-18 23:42:30,207 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.4.1.ufo.UNBOUNDED.pals+Problem12_label05.c[15685,15698] [2023-12-18 23:42:30,557 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 23:42:30,581 INFO L206 MainTranslator]: Completed translation [2023-12-18 23:42:30,583 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:42:30 WrapperNode [2023-12-18 23:42:30,583 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-18 23:42:30,584 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-18 23:42:30,584 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-18 23:42:30,584 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-18 23:42:30,590 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:42:30" (1/1) ... [2023-12-18 23:42:30,649 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:42:30" (1/1) ... [2023-12-18 23:42:30,985 INFO L138 Inliner]: procedures = 36, calls = 21, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 5036 [2023-12-18 23:42:30,985 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-18 23:42:30,986 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-18 23:42:30,986 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-18 23:42:30,986 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-18 23:42:30,995 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:42:30" (1/1) ... [2023-12-18 23:42:30,996 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:42:30" (1/1) ... [2023-12-18 23:42:31,050 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:42:30" (1/1) ... [2023-12-18 23:42:31,128 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]. [2023-12-18 23:42:31,128 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:42:30" (1/1) ... [2023-12-18 23:42:31,128 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:42:30" (1/1) ... [2023-12-18 23:42:31,342 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:42:30" (1/1) ... [2023-12-18 23:42:31,372 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:42:30" (1/1) ... [2023-12-18 23:42:31,389 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:42:30" (1/1) ... [2023-12-18 23:42:31,404 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:42:30" (1/1) ... [2023-12-18 23:42:31,452 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-18 23:42:31,453 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-18 23:42:31,454 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-18 23:42:31,454 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-18 23:42:31,454 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:42:30" (1/1) ... [2023-12-18 23:42:31,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 23:42:31,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:42:31,482 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) [2023-12-18 23:42:31,493 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 [2023-12-18 23:42:31,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-18 23:42:31,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-18 23:42:31,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-18 23:42:31,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-18 23:42:31,625 INFO L241 CfgBuilder]: Building ICFG [2023-12-18 23:42:31,627 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-18 23:42:35,335 INFO L282 CfgBuilder]: Performing block encoding [2023-12-18 23:42:35,403 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-18 23:42:35,403 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-18 23:42:35,403 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 11:42:35 BoogieIcfgContainer [2023-12-18 23:42:35,404 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-18 23:42:35,406 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-18 23:42:35,406 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-18 23:42:35,409 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-18 23:42:35,409 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 11:42:28" (1/3) ... [2023-12-18 23:42:35,410 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60c62dcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 11:42:35, skipping insertion in model container [2023-12-18 23:42:35,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:42:30" (2/3) ... [2023-12-18 23:42:35,410 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60c62dcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 11:42:35, skipping insertion in model container [2023-12-18 23:42:35,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 11:42:35" (3/3) ... [2023-12-18 23:42:35,411 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label05.c [2023-12-18 23:42:35,426 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-18 23:42:35,426 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-18 23:42:35,491 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-18 23:42:35,496 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;@351aace6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-18 23:42:35,497 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-18 23:42:35,505 INFO L276 IsEmpty]: Start isEmpty. Operand has 822 states, 819 states have (on average 1.9768009768009769) internal successors, (1619), 821 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:35,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-18 23:42:35,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:42:35,516 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:42:35,516 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:42:35,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:42:35,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1324896968, now seen corresponding path program 1 times [2023-12-18 23:42:35,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:42:35,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738495244] [2023-12-18 23:42:35,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:42:35,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:42:35,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:42:35,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:42:35,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:42:35,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738495244] [2023-12-18 23:42:35,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738495244] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:42:35,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:42:35,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-18 23:42:35,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829856344] [2023-12-18 23:42:35,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:42:35,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-18 23:42:35,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:42:35,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-18 23:42:35,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-18 23:42:35,709 INFO L87 Difference]: Start difference. First operand has 822 states, 819 states have (on average 1.9768009768009769) internal successors, (1619), 821 states have internal predecessors, (1619), 0 states have call successors, (0), 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 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:35,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:42:35,795 INFO L93 Difference]: Finished difference Result 1616 states and 3185 transitions. [2023-12-18 23:42:35,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-18 23:42:35,797 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2023-12-18 23:42:35,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:42:35,815 INFO L225 Difference]: With dead ends: 1616 [2023-12-18 23:42:35,816 INFO L226 Difference]: Without dead ends: 818 [2023-12-18 23:42:35,821 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 [2023-12-18 23:42:35,823 INFO L413 NwaCegarLoop]: 1547 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, 1547 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 [2023-12-18 23:42:35,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1547 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:42:35,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2023-12-18 23:42:35,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 818. [2023-12-18 23:42:35,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 816 states have (on average 1.8970588235294117) internal successors, (1548), 817 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:35,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1548 transitions. [2023-12-18 23:42:35,914 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1548 transitions. Word has length 19 [2023-12-18 23:42:35,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:42:35,914 INFO L495 AbstractCegarLoop]: Abstraction has 818 states and 1548 transitions. [2023-12-18 23:42:35,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:35,915 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1548 transitions. [2023-12-18 23:42:35,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-18 23:42:35,916 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:42:35,920 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:42:35,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-18 23:42:35,920 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:42:35,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:42:35,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1690206650, now seen corresponding path program 1 times [2023-12-18 23:42:35,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:42:35,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773080005] [2023-12-18 23:42:35,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:42:35,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:42:36,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:42:36,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:42:36,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:42:36,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773080005] [2023-12-18 23:42:36,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773080005] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:42:36,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:42:36,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-18 23:42:36,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343730716] [2023-12-18 23:42:36,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:42:36,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 23:42:36,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:42:36,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 23:42:36,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-18 23:42:36,183 INFO L87 Difference]: Start difference. First operand 818 states and 1548 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:36,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:42:36,270 INFO L93 Difference]: Finished difference Result 858 states and 1610 transitions. [2023-12-18 23:42:36,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 23:42:36,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2023-12-18 23:42:36,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:42:36,277 INFO L225 Difference]: With dead ends: 858 [2023-12-18 23:42:36,277 INFO L226 Difference]: Without dead ends: 818 [2023-12-18 23:42:36,278 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 [2023-12-18 23:42:36,279 INFO L413 NwaCegarLoop]: 1545 mSDtfsCounter, 0 mSDsluCounter, 3063 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4608 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:42:36,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4608 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:42:36,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2023-12-18 23:42:36,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 818. [2023-12-18 23:42:36,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 816 states have (on average 1.8688725490196079) internal successors, (1525), 817 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:36,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1525 transitions. [2023-12-18 23:42:36,296 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1525 transitions. Word has length 19 [2023-12-18 23:42:36,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:42:36,296 INFO L495 AbstractCegarLoop]: Abstraction has 818 states and 1525 transitions. [2023-12-18 23:42:36,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:36,297 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1525 transitions. [2023-12-18 23:42:36,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-18 23:42:36,302 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:42:36,302 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:42:36,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-18 23:42:36,302 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:42:36,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:42:36,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1827910901, now seen corresponding path program 1 times [2023-12-18 23:42:36,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:42:36,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229509001] [2023-12-18 23:42:36,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:42:36,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:42:36,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:42:36,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:42:36,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:42:36,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229509001] [2023-12-18 23:42:36,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229509001] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:42:36,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:42:36,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-18 23:42:36,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716712983] [2023-12-18 23:42:36,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:42:36,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-18 23:42:36,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:42:36,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-18 23:42:36,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-18 23:42:36,479 INFO L87 Difference]: Start difference. First operand 818 states and 1525 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:36,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:42:36,667 INFO L93 Difference]: Finished difference Result 1114 states and 1997 transitions. [2023-12-18 23:42:36,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-18 23:42:36,668 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2023-12-18 23:42:36,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:42:36,675 INFO L225 Difference]: With dead ends: 1114 [2023-12-18 23:42:36,676 INFO L226 Difference]: Without dead ends: 1077 [2023-12-18 23:42:36,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-18 23:42:36,679 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 6269 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6269 SdHoareTripleChecker+Valid, 2107 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 23:42:36,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6269 Valid, 2107 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 23:42:36,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2023-12-18 23:42:36,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 853. [2023-12-18 23:42:36,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 851 states have (on average 1.8578143360752057) internal successors, (1581), 852 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:36,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1581 transitions. [2023-12-18 23:42:36,703 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1581 transitions. Word has length 41 [2023-12-18 23:42:36,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:42:36,709 INFO L495 AbstractCegarLoop]: Abstraction has 853 states and 1581 transitions. [2023-12-18 23:42:36,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:36,710 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1581 transitions. [2023-12-18 23:42:36,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-18 23:42:36,713 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:42:36,713 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] [2023-12-18 23:42:36,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-18 23:42:36,713 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:42:36,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:42:36,714 INFO L85 PathProgramCache]: Analyzing trace with hash -143781275, now seen corresponding path program 1 times [2023-12-18 23:42:36,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:42:36,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649278777] [2023-12-18 23:42:36,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:42:36,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:42:36,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:42:36,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:42:36,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:42:36,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649278777] [2023-12-18 23:42:36,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649278777] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:42:36,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:42:36,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:42:36,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303121124] [2023-12-18 23:42:36,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:42:36,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:42:36,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:42:36,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:42:36,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:42:36,777 INFO L87 Difference]: Start difference. First operand 853 states and 1581 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:36,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:42:36,815 INFO L93 Difference]: Finished difference Result 986 states and 1792 transitions. [2023-12-18 23:42:36,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:42:36,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-12-18 23:42:36,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:42:36,819 INFO L225 Difference]: With dead ends: 986 [2023-12-18 23:42:36,819 INFO L226 Difference]: Without dead ends: 914 [2023-12-18 23:42:36,821 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 [2023-12-18 23:42:36,828 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 1474 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1569 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 [2023-12-18 23:42:36,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1569 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:42:36,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2023-12-18 23:42:36,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 910. [2023-12-18 23:42:36,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 908 states have (on average 1.8381057268722467) internal successors, (1669), 909 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:36,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1669 transitions. [2023-12-18 23:42:36,848 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1669 transitions. Word has length 43 [2023-12-18 23:42:36,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:42:36,849 INFO L495 AbstractCegarLoop]: Abstraction has 910 states and 1669 transitions. [2023-12-18 23:42:36,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:36,849 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1669 transitions. [2023-12-18 23:42:36,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-18 23:42:36,850 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:42:36,850 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] [2023-12-18 23:42:36,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-18 23:42:36,850 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:42:36,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:42:36,851 INFO L85 PathProgramCache]: Analyzing trace with hash -141636323, now seen corresponding path program 1 times [2023-12-18 23:42:36,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:42:36,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048557887] [2023-12-18 23:42:36,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:42:36,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:42:36,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:42:37,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:42:37,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:42:37,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048557887] [2023-12-18 23:42:37,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048557887] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:42:37,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:42:37,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-18 23:42:37,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519640934] [2023-12-18 23:42:37,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:42:37,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-18 23:42:37,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:42:37,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-18 23:42:37,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-18 23:42:37,058 INFO L87 Difference]: Start difference. First operand 910 states and 1669 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:37,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:42:37,177 INFO L93 Difference]: Finished difference Result 1041 states and 1873 transitions. [2023-12-18 23:42:37,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 23:42:37,178 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-12-18 23:42:37,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:42:37,181 INFO L225 Difference]: With dead ends: 1041 [2023-12-18 23:42:37,182 INFO L226 Difference]: Without dead ends: 912 [2023-12-18 23:42:37,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-18 23:42:37,183 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 2970 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2970 SdHoareTripleChecker+Valid, 1684 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:42:37,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2970 Valid, 1684 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:42:37,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2023-12-18 23:42:37,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 910. [2023-12-18 23:42:37,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 908 states have (on average 1.8359030837004404) internal successors, (1667), 909 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:37,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1667 transitions. [2023-12-18 23:42:37,200 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1667 transitions. Word has length 43 [2023-12-18 23:42:37,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:42:37,200 INFO L495 AbstractCegarLoop]: Abstraction has 910 states and 1667 transitions. [2023-12-18 23:42:37,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:37,201 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1667 transitions. [2023-12-18 23:42:37,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-18 23:42:37,201 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:42:37,201 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] [2023-12-18 23:42:37,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-18 23:42:37,202 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:42:37,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:42:37,202 INFO L85 PathProgramCache]: Analyzing trace with hash -224171133, now seen corresponding path program 1 times [2023-12-18 23:42:37,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:42:37,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779771538] [2023-12-18 23:42:37,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:42:37,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:42:37,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:42:37,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:42:37,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:42:37,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779771538] [2023-12-18 23:42:37,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779771538] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:42:37,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:42:37,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-18 23:42:37,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069936244] [2023-12-18 23:42:37,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:42:37,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 23:42:37,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:42:37,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 23:42:37,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-18 23:42:37,420 INFO L87 Difference]: Start difference. First operand 910 states and 1667 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:37,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:42:37,457 INFO L93 Difference]: Finished difference Result 918 states and 1676 transitions. [2023-12-18 23:42:37,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 23:42:37,457 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2023-12-18 23:42:37,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:42:37,461 INFO L225 Difference]: With dead ends: 918 [2023-12-18 23:42:37,461 INFO L226 Difference]: Without dead ends: 916 [2023-12-18 23:42:37,461 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 [2023-12-18 23:42:37,462 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 1 mSDsluCounter, 3034 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4555 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 [2023-12-18 23:42:37,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4555 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:42:37,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2023-12-18 23:42:37,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 914. [2023-12-18 23:42:37,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 912 states have (on average 1.831140350877193) internal successors, (1670), 913 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:37,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1670 transitions. [2023-12-18 23:42:37,478 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1670 transitions. Word has length 44 [2023-12-18 23:42:37,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:42:37,479 INFO L495 AbstractCegarLoop]: Abstraction has 914 states and 1670 transitions. [2023-12-18 23:42:37,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:37,479 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1670 transitions. [2023-12-18 23:42:37,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-18 23:42:37,479 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:42:37,480 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] [2023-12-18 23:42:37,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-18 23:42:37,480 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:42:37,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:42:37,480 INFO L85 PathProgramCache]: Analyzing trace with hash 339171325, now seen corresponding path program 1 times [2023-12-18 23:42:37,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:42:37,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778904920] [2023-12-18 23:42:37,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:42:37,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:42:37,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:42:37,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:42:37,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:42:37,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778904920] [2023-12-18 23:42:37,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778904920] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:42:37,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:42:37,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:42:37,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514827131] [2023-12-18 23:42:37,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:42:37,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:42:37,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:42:37,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:42:37,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:42:37,521 INFO L87 Difference]: Start difference. First operand 914 states and 1670 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:37,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:42:37,548 INFO L93 Difference]: Finished difference Result 1164 states and 2050 transitions. [2023-12-18 23:42:37,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:42:37,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-12-18 23:42:37,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:42:37,552 INFO L225 Difference]: With dead ends: 1164 [2023-12-18 23:42:37,552 INFO L226 Difference]: Without dead ends: 1031 [2023-12-18 23:42:37,553 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 [2023-12-18 23:42:37,553 INFO L413 NwaCegarLoop]: 1557 mSDtfsCounter, 1485 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1620 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 [2023-12-18 23:42:37,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 1620 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:42:37,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2023-12-18 23:42:37,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 1029. [2023-12-18 23:42:37,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1029 states, 1027 states have (on average 1.7925998052580332) internal successors, (1841), 1028 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:37,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1841 transitions. [2023-12-18 23:42:37,572 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1841 transitions. Word has length 45 [2023-12-18 23:42:37,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:42:37,573 INFO L495 AbstractCegarLoop]: Abstraction has 1029 states and 1841 transitions. [2023-12-18 23:42:37,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:37,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1841 transitions. [2023-12-18 23:42:37,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-18 23:42:37,573 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:42:37,573 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] [2023-12-18 23:42:37,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-18 23:42:37,574 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:42:37,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:42:37,574 INFO L85 PathProgramCache]: Analyzing trace with hash -286484739, now seen corresponding path program 1 times [2023-12-18 23:42:37,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:42:37,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56003891] [2023-12-18 23:42:37,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:42:37,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:42:37,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:42:37,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:42:37,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:42:37,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56003891] [2023-12-18 23:42:37,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56003891] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:42:37,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:42:37,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:42:37,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714660224] [2023-12-18 23:42:37,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:42:37,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:42:37,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:42:37,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:42:37,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:42:37,615 INFO L87 Difference]: Start difference. First operand 1029 states and 1841 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:37,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:42:37,651 INFO L93 Difference]: Finished difference Result 1493 states and 2535 transitions. [2023-12-18 23:42:37,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:42:37,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-12-18 23:42:37,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:42:37,656 INFO L225 Difference]: With dead ends: 1493 [2023-12-18 23:42:37,656 INFO L226 Difference]: Without dead ends: 1245 [2023-12-18 23:42:37,656 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 [2023-12-18 23:42:37,657 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 1483 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1483 SdHoareTripleChecker+Valid, 1622 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 [2023-12-18 23:42:37,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1483 Valid, 1622 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:42:37,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2023-12-18 23:42:37,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 1243. [2023-12-18 23:42:37,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1243 states, 1241 states have (on average 1.7332796132151491) internal successors, (2151), 1242 states have internal predecessors, (2151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:37,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 2151 transitions. [2023-12-18 23:42:37,680 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 2151 transitions. Word has length 45 [2023-12-18 23:42:37,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:42:37,680 INFO L495 AbstractCegarLoop]: Abstraction has 1243 states and 2151 transitions. [2023-12-18 23:42:37,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:37,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 2151 transitions. [2023-12-18 23:42:37,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-18 23:42:37,681 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:42:37,681 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] [2023-12-18 23:42:37,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-18 23:42:37,682 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:42:37,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:42:37,682 INFO L85 PathProgramCache]: Analyzing trace with hash 602248701, now seen corresponding path program 1 times [2023-12-18 23:42:37,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:42:37,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097236786] [2023-12-18 23:42:37,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:42:37,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:42:37,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:42:37,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:42:37,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:42:37,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097236786] [2023-12-18 23:42:37,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097236786] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:42:37,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:42:37,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:42:37,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068195064] [2023-12-18 23:42:37,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:42:37,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:42:37,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:42:37,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:42:37,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:42:37,732 INFO L87 Difference]: Start difference. First operand 1243 states and 2151 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:37,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:42:37,769 INFO L93 Difference]: Finished difference Result 2103 states and 3409 transitions. [2023-12-18 23:42:37,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:42:37,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-12-18 23:42:37,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:42:37,777 INFO L225 Difference]: With dead ends: 2103 [2023-12-18 23:42:37,777 INFO L226 Difference]: Without dead ends: 1641 [2023-12-18 23:42:37,778 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 [2023-12-18 23:42:37,780 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 1481 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 1624 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 [2023-12-18 23:42:37,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1481 Valid, 1624 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:42:37,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2023-12-18 23:42:37,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 1639. [2023-12-18 23:42:37,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1639 states, 1637 states have (on average 1.653634697617593) internal successors, (2707), 1638 states have internal predecessors, (2707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:37,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 2707 transitions. [2023-12-18 23:42:37,823 INFO L78 Accepts]: Start accepts. Automaton has 1639 states and 2707 transitions. Word has length 45 [2023-12-18 23:42:37,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:42:37,823 INFO L495 AbstractCegarLoop]: Abstraction has 1639 states and 2707 transitions. [2023-12-18 23:42:37,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:37,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1639 states and 2707 transitions. [2023-12-18 23:42:37,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-18 23:42:37,824 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:42:37,824 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] [2023-12-18 23:42:37,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-18 23:42:37,824 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:42:37,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:42:37,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1358107618, now seen corresponding path program 1 times [2023-12-18 23:42:37,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:42:37,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320137139] [2023-12-18 23:42:37,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:42:37,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:42:37,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:42:37,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:42:37,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:42:37,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320137139] [2023-12-18 23:42:37,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320137139] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:42:37,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:42:37,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:42:37,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844686365] [2023-12-18 23:42:37,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:42:37,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:42:37,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:42:37,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:42:37,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:42:37,870 INFO L87 Difference]: Start difference. First operand 1639 states and 2707 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:37,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:42:37,917 INFO L93 Difference]: Finished difference Result 2542 states and 4041 transitions. [2023-12-18 23:42:37,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:42:37,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2023-12-18 23:42:37,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:42:37,924 INFO L225 Difference]: With dead ends: 2542 [2023-12-18 23:42:37,924 INFO L226 Difference]: Without dead ends: 2043 [2023-12-18 23:42:37,925 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 [2023-12-18 23:42:37,926 INFO L413 NwaCegarLoop]: 1562 mSDtfsCounter, 1484 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1621 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 [2023-12-18 23:42:37,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1621 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:42:37,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2043 states. [2023-12-18 23:42:37,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2043 to 2041. [2023-12-18 23:42:37,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2041 states, 2039 states have (on average 1.6071603727317312) internal successors, (3277), 2040 states have internal predecessors, (3277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:37,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2041 states to 2041 states and 3277 transitions. [2023-12-18 23:42:37,970 INFO L78 Accepts]: Start accepts. Automaton has 2041 states and 3277 transitions. Word has length 47 [2023-12-18 23:42:37,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:42:37,970 INFO L495 AbstractCegarLoop]: Abstraction has 2041 states and 3277 transitions. [2023-12-18 23:42:37,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:37,971 INFO L276 IsEmpty]: Start isEmpty. Operand 2041 states and 3277 transitions. [2023-12-18 23:42:37,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-18 23:42:37,971 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:42:37,971 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] [2023-12-18 23:42:37,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-18 23:42:37,972 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:42:37,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:42:37,972 INFO L85 PathProgramCache]: Analyzing trace with hash 2047190193, now seen corresponding path program 1 times [2023-12-18 23:42:37,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:42:37,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989399003] [2023-12-18 23:42:37,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:42:37,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:42:37,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:42:38,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:42:38,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:42:38,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989399003] [2023-12-18 23:42:38,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989399003] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:42:38,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:42:38,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:42:38,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228922012] [2023-12-18 23:42:38,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:42:38,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 23:42:38,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:42:38,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 23:42:38,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-18 23:42:38,097 INFO L87 Difference]: Start difference. First operand 2041 states and 3277 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) [2023-12-18 23:42:43,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:42:43,760 INFO L93 Difference]: Finished difference Result 4296 states and 7586 transitions. [2023-12-18 23:42:43,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 23:42:43,760 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 [2023-12-18 23:42:43,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:42:43,772 INFO L225 Difference]: With dead ends: 4296 [2023-12-18 23:42:43,773 INFO L226 Difference]: Without dead ends: 3543 [2023-12-18 23:42:43,774 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 [2023-12-18 23:42:43,774 INFO L413 NwaCegarLoop]: 758 mSDtfsCounter, 2366 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5357 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2366 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 6510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-12-18 23:42:43,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2366 Valid, 776 Invalid, 6510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5357 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-12-18 23:42:43,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3543 states. [2023-12-18 23:42:43,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3543 to 3543. [2023-12-18 23:42:43,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3543 states, 3541 states have (on average 1.522451284947755) internal successors, (5391), 3542 states have internal predecessors, (5391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:43,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3543 states to 3543 states and 5391 transitions. [2023-12-18 23:42:43,853 INFO L78 Accepts]: Start accepts. Automaton has 3543 states and 5391 transitions. Word has length 59 [2023-12-18 23:42:43,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:42:43,853 INFO L495 AbstractCegarLoop]: Abstraction has 3543 states and 5391 transitions. [2023-12-18 23:42:43,853 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) [2023-12-18 23:42:43,853 INFO L276 IsEmpty]: Start isEmpty. Operand 3543 states and 5391 transitions. [2023-12-18 23:42:43,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-18 23:42:43,854 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:42:43,854 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] [2023-12-18 23:42:43,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-18 23:42:43,855 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:42:43,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:42:43,855 INFO L85 PathProgramCache]: Analyzing trace with hash 445025325, now seen corresponding path program 1 times [2023-12-18 23:42:43,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:42:43,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205408136] [2023-12-18 23:42:43,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:42:43,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:42:43,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:42:43,972 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-18 23:42:43,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:42:43,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205408136] [2023-12-18 23:42:43,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205408136] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:42:43,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:42:43,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-18 23:42:43,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520801745] [2023-12-18 23:42:43,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:42:43,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-18 23:42:43,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:42:43,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-18 23:42:43,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-18 23:42:43,974 INFO L87 Difference]: Start difference. First operand 3543 states and 5391 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:44,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:42:44,219 INFO L93 Difference]: Finished difference Result 8849 states and 13004 transitions. [2023-12-18 23:42:44,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 23:42:44,221 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 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 61 [2023-12-18 23:42:44,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:42:44,245 INFO L225 Difference]: With dead ends: 8849 [2023-12-18 23:42:44,245 INFO L226 Difference]: Without dead ends: 7591 [2023-12-18 23:42:44,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-18 23:42:44,250 INFO L413 NwaCegarLoop]: 1574 mSDtfsCounter, 4657 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4657 SdHoareTripleChecker+Valid, 3329 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:42:44,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4657 Valid, 3329 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:42:44,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7591 states. [2023-12-18 23:42:44,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7591 to 4799. [2023-12-18 23:42:44,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4799 states, 4797 states have (on average 1.4957264957264957) internal successors, (7175), 4798 states have internal predecessors, (7175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:44,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4799 states to 4799 states and 7175 transitions. [2023-12-18 23:42:44,386 INFO L78 Accepts]: Start accepts. Automaton has 4799 states and 7175 transitions. Word has length 61 [2023-12-18 23:42:44,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:42:44,386 INFO L495 AbstractCegarLoop]: Abstraction has 4799 states and 7175 transitions. [2023-12-18 23:42:44,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:44,386 INFO L276 IsEmpty]: Start isEmpty. Operand 4799 states and 7175 transitions. [2023-12-18 23:42:44,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-18 23:42:44,387 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:42:44,388 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] [2023-12-18 23:42:44,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-18 23:42:44,389 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:42:44,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:42:44,389 INFO L85 PathProgramCache]: Analyzing trace with hash -180630739, now seen corresponding path program 1 times [2023-12-18 23:42:44,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:42:44,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368409285] [2023-12-18 23:42:44,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:42:44,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:42:44,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:42:44,484 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-18 23:42:44,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:42:44,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368409285] [2023-12-18 23:42:44,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368409285] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:42:44,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:42:44,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-18 23:42:44,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565508328] [2023-12-18 23:42:44,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:42:44,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-18 23:42:44,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:42:44,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-18 23:42:44,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-18 23:42:44,487 INFO L87 Difference]: Start difference. First operand 4799 states and 7175 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:44,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:42:44,712 INFO L93 Difference]: Finished difference Result 10105 states and 14788 transitions. [2023-12-18 23:42:44,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 23:42:44,713 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 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 61 [2023-12-18 23:42:44,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:42:44,748 INFO L225 Difference]: With dead ends: 10105 [2023-12-18 23:42:44,748 INFO L226 Difference]: Without dead ends: 8847 [2023-12-18 23:42:44,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-18 23:42:44,753 INFO L413 NwaCegarLoop]: 1571 mSDtfsCounter, 4681 mSDsluCounter, 1713 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4681 SdHoareTripleChecker+Valid, 3284 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:42:44,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4681 Valid, 3284 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:42:44,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8847 states. [2023-12-18 23:42:44,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8847 to 6687. [2023-12-18 23:42:44,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6687 states, 6685 states have (on average 1.4706058339566193) internal successors, (9831), 6686 states have internal predecessors, (9831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:44,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6687 states to 6687 states and 9831 transitions. [2023-12-18 23:42:44,997 INFO L78 Accepts]: Start accepts. Automaton has 6687 states and 9831 transitions. Word has length 61 [2023-12-18 23:42:44,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:42:44,997 INFO L495 AbstractCegarLoop]: Abstraction has 6687 states and 9831 transitions. [2023-12-18 23:42:44,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:44,998 INFO L276 IsEmpty]: Start isEmpty. Operand 6687 states and 9831 transitions. [2023-12-18 23:42:44,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-18 23:42:44,999 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:42:44,999 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] [2023-12-18 23:42:44,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-18 23:42:44,999 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:42:45,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:42:45,001 INFO L85 PathProgramCache]: Analyzing trace with hash 708102701, now seen corresponding path program 1 times [2023-12-18 23:42:45,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:42:45,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596926404] [2023-12-18 23:42:45,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:42:45,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:42:45,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:42:45,112 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-18 23:42:45,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:42:45,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596926404] [2023-12-18 23:42:45,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596926404] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:42:45,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:42:45,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-18 23:42:45,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11114745] [2023-12-18 23:42:45,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:42:45,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-18 23:42:45,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:42:45,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-18 23:42:45,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-18 23:42:45,114 INFO L87 Difference]: Start difference. First operand 6687 states and 9831 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:45,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:42:45,374 INFO L93 Difference]: Finished difference Result 11361 states and 16572 transitions. [2023-12-18 23:42:45,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 23:42:45,375 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 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 61 [2023-12-18 23:42:45,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:42:45,393 INFO L225 Difference]: With dead ends: 11361 [2023-12-18 23:42:45,393 INFO L226 Difference]: Without dead ends: 10103 [2023-12-18 23:42:45,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-18 23:42:45,398 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 4667 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4667 SdHoareTripleChecker+Valid, 3303 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:42:45,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4667 Valid, 3303 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:42:45,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10103 states. [2023-12-18 23:42:45,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10103 to 7943. [2023-12-18 23:42:45,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7943 states, 7941 states have (on average 1.4626621332325904) internal successors, (11615), 7942 states have internal predecessors, (11615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:45,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7943 states to 7943 states and 11615 transitions. [2023-12-18 23:42:45,623 INFO L78 Accepts]: Start accepts. Automaton has 7943 states and 11615 transitions. Word has length 61 [2023-12-18 23:42:45,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:42:45,624 INFO L495 AbstractCegarLoop]: Abstraction has 7943 states and 11615 transitions. [2023-12-18 23:42:45,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:45,624 INFO L276 IsEmpty]: Start isEmpty. Operand 7943 states and 11615 transitions. [2023-12-18 23:42:45,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-18 23:42:45,629 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:42:45,629 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] [2023-12-18 23:42:45,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-18 23:42:45,629 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:42:45,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:42:45,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1949780395, now seen corresponding path program 1 times [2023-12-18 23:42:45,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:42:45,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708847265] [2023-12-18 23:42:45,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:42:45,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:42:45,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:42:45,778 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:42:45,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:42:45,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708847265] [2023-12-18 23:42:45,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708847265] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:42:45,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:42:45,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:42:45,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214600993] [2023-12-18 23:42:45,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:42:45,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:42:45,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:42:45,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:42:45,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:42:45,780 INFO L87 Difference]: Start difference. First operand 7943 states and 11615 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:45,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:42:45,890 INFO L93 Difference]: Finished difference Result 11996 states and 17467 transitions. [2023-12-18 23:42:45,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:42:45,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2023-12-18 23:42:45,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:42:45,900 INFO L225 Difference]: With dead ends: 11996 [2023-12-18 23:42:45,900 INFO L226 Difference]: Without dead ends: 6338 [2023-12-18 23:42:45,908 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 [2023-12-18 23:42:45,909 INFO L413 NwaCegarLoop]: 1554 mSDtfsCounter, 42 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 3062 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 [2023-12-18 23:42:45,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 3062 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:42:45,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6338 states. [2023-12-18 23:42:46,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6338 to 6336. [2023-12-18 23:42:46,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6336 states, 6334 states have (on average 1.4777391853489106) internal successors, (9360), 6335 states have internal predecessors, (9360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:46,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6336 states to 6336 states and 9360 transitions. [2023-12-18 23:42:46,063 INFO L78 Accepts]: Start accepts. Automaton has 6336 states and 9360 transitions. Word has length 63 [2023-12-18 23:42:46,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:42:46,063 INFO L495 AbstractCegarLoop]: Abstraction has 6336 states and 9360 transitions. [2023-12-18 23:42:46,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:46,063 INFO L276 IsEmpty]: Start isEmpty. Operand 6336 states and 9360 transitions. [2023-12-18 23:42:46,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-18 23:42:46,064 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:42:46,064 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] [2023-12-18 23:42:46,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-18 23:42:46,065 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:42:46,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:42:46,065 INFO L85 PathProgramCache]: Analyzing trace with hash 4586514, now seen corresponding path program 1 times [2023-12-18 23:42:46,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:42:46,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914274189] [2023-12-18 23:42:46,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:42:46,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:42:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:42:46,164 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-18 23:42:46,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:42:46,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914274189] [2023-12-18 23:42:46,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914274189] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:42:46,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:42:46,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-18 23:42:46,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729041787] [2023-12-18 23:42:46,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:42:46,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-18 23:42:46,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:42:46,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-18 23:42:46,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-18 23:42:46,167 INFO L87 Difference]: Start difference. First operand 6336 states and 9360 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 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) [2023-12-18 23:42:46,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:42:46,387 INFO L93 Difference]: Finished difference Result 9930 states and 14549 transitions. [2023-12-18 23:42:46,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 23:42:46,387 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 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 63 [2023-12-18 23:42:46,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:42:46,401 INFO L225 Difference]: With dead ends: 9930 [2023-12-18 23:42:46,402 INFO L226 Difference]: Without dead ends: 9032 [2023-12-18 23:42:46,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-18 23:42:46,405 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 4657 mSDsluCounter, 1799 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4657 SdHoareTripleChecker+Valid, 3368 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 23:42:46,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4657 Valid, 3368 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 23:42:46,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9032 states. [2023-12-18 23:42:46,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9032 to 7232. [2023-12-18 23:42:46,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7232 states, 7230 states have (on average 1.4716459197787) internal successors, (10640), 7231 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:46,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7232 states to 7232 states and 10640 transitions. [2023-12-18 23:42:46,604 INFO L78 Accepts]: Start accepts. Automaton has 7232 states and 10640 transitions. Word has length 63 [2023-12-18 23:42:46,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:42:46,604 INFO L495 AbstractCegarLoop]: Abstraction has 7232 states and 10640 transitions. [2023-12-18 23:42:46,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 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) [2023-12-18 23:42:46,605 INFO L276 IsEmpty]: Start isEmpty. Operand 7232 states and 10640 transitions. [2023-12-18 23:42:46,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-18 23:42:46,606 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:42:46,606 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] [2023-12-18 23:42:46,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-18 23:42:46,606 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:42:46,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:42:46,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1055056157, now seen corresponding path program 1 times [2023-12-18 23:42:46,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:42:46,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232996945] [2023-12-18 23:42:46,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:42:46,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:42:46,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:42:46,684 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:42:46,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:42:46,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232996945] [2023-12-18 23:42:46,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232996945] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:42:46,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:42:46,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:42:46,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833101644] [2023-12-18 23:42:46,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:42:46,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:42:46,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:42:46,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:42:46,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:42:46,686 INFO L87 Difference]: Start difference. First operand 7232 states and 10640 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) [2023-12-18 23:42:46,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:42:46,767 INFO L93 Difference]: Finished difference Result 9700 states and 14162 transitions. [2023-12-18 23:42:46,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:42:46,768 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 [2023-12-18 23:42:46,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:42:46,775 INFO L225 Difference]: With dead ends: 9700 [2023-12-18 23:42:46,775 INFO L226 Difference]: Without dead ends: 4770 [2023-12-18 23:42:46,780 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 [2023-12-18 23:42:46,781 INFO L413 NwaCegarLoop]: 1547 mSDtfsCounter, 37 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3047 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 [2023-12-18 23:42:46,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3047 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:42:46,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4770 states. [2023-12-18 23:42:46,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4770 to 4768. [2023-12-18 23:42:46,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4768 states, 4766 states have (on average 1.4846831724716743) internal successors, (7076), 4767 states have internal predecessors, (7076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:46,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4768 states to 4768 states and 7076 transitions. [2023-12-18 23:42:46,884 INFO L78 Accepts]: Start accepts. Automaton has 4768 states and 7076 transitions. Word has length 64 [2023-12-18 23:42:46,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:42:46,884 INFO L495 AbstractCegarLoop]: Abstraction has 4768 states and 7076 transitions. [2023-12-18 23:42:46,885 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) [2023-12-18 23:42:46,885 INFO L276 IsEmpty]: Start isEmpty. Operand 4768 states and 7076 transitions. [2023-12-18 23:42:46,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-18 23:42:46,886 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:42:46,886 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] [2023-12-18 23:42:46,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-18 23:42:46,886 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:42:46,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:42:46,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1300219787, now seen corresponding path program 1 times [2023-12-18 23:42:46,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:42:46,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157088196] [2023-12-18 23:42:46,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:42:46,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:42:46,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:42:46,992 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:42:46,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:42:46,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157088196] [2023-12-18 23:42:46,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157088196] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:42:46,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:42:46,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:42:46,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328156842] [2023-12-18 23:42:46,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:42:46,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:42:46,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:42:46,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:42:46,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:42:46,994 INFO L87 Difference]: Start difference. First operand 4768 states and 7076 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) [2023-12-18 23:42:47,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:42:47,043 INFO L93 Difference]: Finished difference Result 6004 states and 8816 transitions. [2023-12-18 23:42:47,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:42:47,043 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 [2023-12-18 23:42:47,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:42:47,048 INFO L225 Difference]: With dead ends: 6004 [2023-12-18 23:42:47,049 INFO L226 Difference]: Without dead ends: 3538 [2023-12-18 23:42:47,051 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 [2023-12-18 23:42:47,051 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 34 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3032 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 [2023-12-18 23:42:47,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3032 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:42:47,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3538 states. [2023-12-18 23:42:47,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3538 to 3536. [2023-12-18 23:42:47,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3536 states, 3534 states have (on average 1.5042444821731749) internal successors, (5316), 3535 states have internal predecessors, (5316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:47,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3536 states to 3536 states and 5316 transitions. [2023-12-18 23:42:47,116 INFO L78 Accepts]: Start accepts. Automaton has 3536 states and 5316 transitions. Word has length 66 [2023-12-18 23:42:47,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:42:47,116 INFO L495 AbstractCegarLoop]: Abstraction has 3536 states and 5316 transitions. [2023-12-18 23:42:47,116 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) [2023-12-18 23:42:47,116 INFO L276 IsEmpty]: Start isEmpty. Operand 3536 states and 5316 transitions. [2023-12-18 23:42:47,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-18 23:42:47,117 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:42:47,118 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] [2023-12-18 23:42:47,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-18 23:42:47,118 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:42:47,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:42:47,119 INFO L85 PathProgramCache]: Analyzing trace with hash 925871993, now seen corresponding path program 1 times [2023-12-18 23:42:47,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:42:47,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44919670] [2023-12-18 23:42:47,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:42:47,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:42:47,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:42:47,188 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:42:47,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:42:47,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44919670] [2023-12-18 23:42:47,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44919670] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:42:47,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:42:47,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:42:47,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731670997] [2023-12-18 23:42:47,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:42:47,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:42:47,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:42:47,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:42:47,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:42:47,191 INFO L87 Difference]: Start difference. First operand 3536 states and 5316 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) [2023-12-18 23:42:47,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:42:47,228 INFO L93 Difference]: Finished difference Result 4156 states and 6176 transitions. [2023-12-18 23:42:47,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:42:47,229 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 [2023-12-18 23:42:47,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:42:47,233 INFO L225 Difference]: With dead ends: 4156 [2023-12-18 23:42:47,233 INFO L226 Difference]: Without dead ends: 2922 [2023-12-18 23:42:47,234 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 [2023-12-18 23:42:47,235 INFO L413 NwaCegarLoop]: 1533 mSDtfsCounter, 31 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3017 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 [2023-12-18 23:42:47,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3017 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:42:47,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2023-12-18 23:42:47,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 2920. [2023-12-18 23:42:47,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2920 states, 2918 states have (on average 1.523989033584647) internal successors, (4447), 2919 states have internal predecessors, (4447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:47,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2920 states to 2920 states and 4447 transitions. [2023-12-18 23:42:47,278 INFO L78 Accepts]: Start accepts. Automaton has 2920 states and 4447 transitions. Word has length 68 [2023-12-18 23:42:47,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:42:47,278 INFO L495 AbstractCegarLoop]: Abstraction has 2920 states and 4447 transitions. [2023-12-18 23:42:47,279 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) [2023-12-18 23:42:47,279 INFO L276 IsEmpty]: Start isEmpty. Operand 2920 states and 4447 transitions. [2023-12-18 23:42:47,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-18 23:42:47,279 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:42:47,280 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-18 23:42:47,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-18 23:42:47,280 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:42:47,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:42:47,280 INFO L85 PathProgramCache]: Analyzing trace with hash -324175641, now seen corresponding path program 1 times [2023-12-18 23:42:47,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:42:47,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747805170] [2023-12-18 23:42:47,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:42:47,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:42:47,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:42:48,780 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:42:48,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:42:48,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747805170] [2023-12-18 23:42:48,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747805170] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:42:48,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080882538] [2023-12-18 23:42:48,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:42:48,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:42:48,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:42:48,784 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) [2023-12-18 23:42:48,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-18 23:42:48,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:42:48,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-18 23:42:48,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:42:49,093 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-18 23:42:49,093 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:42:49,247 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-18 23:42:49,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080882538] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:42:49,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:42:49,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-18 23:42:49,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892944729] [2023-12-18 23:42:49,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:42:49,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-18 23:42:49,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:42:49,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-18 23:42:49,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-18 23:42:49,249 INFO L87 Difference]: Start difference. First operand 2920 states and 4447 transitions. Second operand has 18 states, 18 states have (on average 10.88888888888889) internal successors, (196), 18 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:51,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:42:51,713 INFO L93 Difference]: Finished difference Result 7075 states and 9998 transitions. [2023-12-18 23:42:51,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-18 23:42:51,714 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.88888888888889) internal successors, (196), 18 states have internal predecessors, (196), 0 states have call successors, (0), 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 70 [2023-12-18 23:42:51,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:42:51,725 INFO L225 Difference]: With dead ends: 7075 [2023-12-18 23:42:51,725 INFO L226 Difference]: Without dead ends: 6457 [2023-12-18 23:42:51,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=689, Invalid=2971, Unknown=0, NotChecked=0, Total=3660 [2023-12-18 23:42:51,728 INFO L413 NwaCegarLoop]: 1506 mSDtfsCounter, 16576 mSDsluCounter, 6297 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16576 SdHoareTripleChecker+Valid, 7803 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-18 23:42:51,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16576 Valid, 7803 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-18 23:42:51,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6457 states. [2023-12-18 23:42:51,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6457 to 6269. [2023-12-18 23:42:51,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6269 states, 6267 states have (on average 1.3859901069092069) internal successors, (8686), 6268 states have internal predecessors, (8686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:51,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6269 states to 6269 states and 8686 transitions. [2023-12-18 23:42:51,951 INFO L78 Accepts]: Start accepts. Automaton has 6269 states and 8686 transitions. Word has length 70 [2023-12-18 23:42:51,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:42:51,952 INFO L495 AbstractCegarLoop]: Abstraction has 6269 states and 8686 transitions. [2023-12-18 23:42:51,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.88888888888889) internal successors, (196), 18 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:51,952 INFO L276 IsEmpty]: Start isEmpty. Operand 6269 states and 8686 transitions. [2023-12-18 23:42:51,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-18 23:42:51,953 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:42:51,953 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] [2023-12-18 23:42:51,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-18 23:42:52,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:42:52,159 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:42:52,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:42:52,160 INFO L85 PathProgramCache]: Analyzing trace with hash -2128128912, now seen corresponding path program 1 times [2023-12-18 23:42:52,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:42:52,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765946732] [2023-12-18 23:42:52,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:42:52,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:42:52,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:42:54,013 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:42:54,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:42:54,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765946732] [2023-12-18 23:42:54,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765946732] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:42:54,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313596633] [2023-12-18 23:42:54,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:42:54,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:42:54,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:42:54,016 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) [2023-12-18 23:42:54,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-18 23:42:54,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:42:54,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-18 23:42:54,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:42:54,454 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:42:54,454 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:42:55,377 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:42:55,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313596633] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:42:55,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:42:55,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2023-12-18 23:42:55,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40254931] [2023-12-18 23:42:55,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:42:55,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-18 23:42:55,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:42:55,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-18 23:42:55,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2023-12-18 23:42:55,381 INFO L87 Difference]: Start difference. First operand 6269 states and 8686 transitions. Second operand has 28 states, 28 states have (on average 6.5) internal successors, (182), 27 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:57,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:42:57,107 INFO L93 Difference]: Finished difference Result 17567 states and 23118 transitions. [2023-12-18 23:42:57,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-18 23:42:57,108 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.5) internal successors, (182), 27 states have internal predecessors, (182), 0 states have call successors, (0), 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 71 [2023-12-18 23:42:57,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:42:57,129 INFO L225 Difference]: With dead ends: 17567 [2023-12-18 23:42:57,130 INFO L226 Difference]: Without dead ends: 14085 [2023-12-18 23:42:57,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=565, Invalid=2515, Unknown=0, NotChecked=0, Total=3080 [2023-12-18 23:42:57,139 INFO L413 NwaCegarLoop]: 1497 mSDtfsCounter, 20852 mSDsluCounter, 7880 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20852 SdHoareTripleChecker+Valid, 9377 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-18 23:42:57,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20852 Valid, 9377 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-18 23:42:57,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14085 states. [2023-12-18 23:42:57,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14085 to 12747. [2023-12-18 23:42:57,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12747 states, 12745 states have (on average 1.3293840721851706) internal successors, (16943), 12746 states have internal predecessors, (16943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:57,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12747 states to 12747 states and 16943 transitions. [2023-12-18 23:42:57,540 INFO L78 Accepts]: Start accepts. Automaton has 12747 states and 16943 transitions. Word has length 71 [2023-12-18 23:42:57,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:42:57,540 INFO L495 AbstractCegarLoop]: Abstraction has 12747 states and 16943 transitions. [2023-12-18 23:42:57,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.5) internal successors, (182), 27 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:57,541 INFO L276 IsEmpty]: Start isEmpty. Operand 12747 states and 16943 transitions. [2023-12-18 23:42:57,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-18 23:42:57,542 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:42:57,542 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] [2023-12-18 23:42:57,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-18 23:42:57,751 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,SelfDestructingSolverStorable20 [2023-12-18 23:42:57,751 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:42:57,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:42:57,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1140000624, now seen corresponding path program 1 times [2023-12-18 23:42:57,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:42:57,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229193927] [2023-12-18 23:42:57,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:42:57,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:42:57,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:42:58,107 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:42:58,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:42:58,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229193927] [2023-12-18 23:42:58,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229193927] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:42:58,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892993974] [2023-12-18 23:42:58,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:42:58,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:42:58,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:42:58,110 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) [2023-12-18 23:42:58,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-18 23:42:58,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:42:58,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-18 23:42:58,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:42:58,585 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:42:58,586 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:42:59,206 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:42:59,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892993974] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:42:59,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:42:59,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2023-12-18 23:42:59,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955007724] [2023-12-18 23:42:59,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:42:59,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-18 23:42:59,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:42:59,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-18 23:42:59,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2023-12-18 23:42:59,208 INFO L87 Difference]: Start difference. First operand 12747 states and 16943 transitions. Second operand has 26 states, 26 states have (on average 7.576923076923077) internal successors, (197), 25 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:43:00,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:43:00,734 INFO L93 Difference]: Finished difference Result 23977 states and 31206 transitions. [2023-12-18 23:43:00,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-18 23:43:00,735 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 7.576923076923077) internal successors, (197), 25 states have internal predecessors, (197), 0 states have call successors, (0), 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 71 [2023-12-18 23:43:00,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:43:00,757 INFO L225 Difference]: With dead ends: 23977 [2023-12-18 23:43:00,757 INFO L226 Difference]: Without dead ends: 14007 [2023-12-18 23:43:00,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=694, Invalid=2498, Unknown=0, NotChecked=0, Total=3192 [2023-12-18 23:43:00,766 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 21452 mSDsluCounter, 7920 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21452 SdHoareTripleChecker+Valid, 9438 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-18 23:43:00,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21452 Valid, 9438 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-18 23:43:00,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14007 states. [2023-12-18 23:43:01,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14007 to 12491. [2023-12-18 23:43:01,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12491 states, 12489 states have (on average 1.3102730402754423) internal successors, (16364), 12490 states have internal predecessors, (16364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:43:01,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12491 states to 12491 states and 16364 transitions. [2023-12-18 23:43:01,154 INFO L78 Accepts]: Start accepts. Automaton has 12491 states and 16364 transitions. Word has length 71 [2023-12-18 23:43:01,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:43:01,155 INFO L495 AbstractCegarLoop]: Abstraction has 12491 states and 16364 transitions. [2023-12-18 23:43:01,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.576923076923077) internal successors, (197), 25 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:43:01,155 INFO L276 IsEmpty]: Start isEmpty. Operand 12491 states and 16364 transitions. [2023-12-18 23:43:01,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-18 23:43:01,159 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:43:01,159 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-18 23:43:01,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-18 23:43:01,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:43:01,365 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:43:01,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:43:01,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1053335691, now seen corresponding path program 1 times [2023-12-18 23:43:01,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:43:01,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650970753] [2023-12-18 23:43:01,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:43:01,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:43:01,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:43:01,677 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:43:01,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:43:01,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650970753] [2023-12-18 23:43:01,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650970753] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:43:01,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144641607] [2023-12-18 23:43:01,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:43:01,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:43:01,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:43:01,679 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) [2023-12-18 23:43:01,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-18 23:43:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:43:01,783 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-18 23:43:01,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:43:02,352 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:43:02,352 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:43:03,124 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:43:03,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144641607] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:43:03,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:43:03,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-12-18 23:43:03,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302304287] [2023-12-18 23:43:03,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:43:03,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-18 23:43:03,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:43:03,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-18 23:43:03,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2023-12-18 23:43:03,128 INFO L87 Difference]: Start difference. First operand 12491 states and 16364 transitions. Second operand has 28 states, 28 states have (on average 6.678571428571429) internal successors, (187), 28 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:43:04,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:43:04,268 INFO L93 Difference]: Finished difference Result 33247 states and 42267 transitions. [2023-12-18 23:43:04,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-18 23:43:04,269 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.678571428571429) internal successors, (187), 28 states have internal predecessors, (187), 0 states have call successors, (0), 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 72 [2023-12-18 23:43:04,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:43:04,301 INFO L225 Difference]: With dead ends: 33247 [2023-12-18 23:43:04,302 INFO L226 Difference]: Without dead ends: 24365 [2023-12-18 23:43:04,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=449, Invalid=1357, Unknown=0, NotChecked=0, Total=1806 [2023-12-18 23:43:04,314 INFO L413 NwaCegarLoop]: 1511 mSDtfsCounter, 13678 mSDsluCounter, 4799 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13678 SdHoareTripleChecker+Valid, 6310 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 23:43:04,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13678 Valid, 6310 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 23:43:04,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24365 states. [2023-12-18 23:43:05,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24365 to 22759. [2023-12-18 23:43:05,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22759 states, 22757 states have (on average 1.2704662301709364) internal successors, (28912), 22758 states have internal predecessors, (28912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:43:05,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22759 states to 22759 states and 28912 transitions. [2023-12-18 23:43:05,166 INFO L78 Accepts]: Start accepts. Automaton has 22759 states and 28912 transitions. Word has length 72 [2023-12-18 23:43:05,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:43:05,166 INFO L495 AbstractCegarLoop]: Abstraction has 22759 states and 28912 transitions. [2023-12-18 23:43:05,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.678571428571429) internal successors, (187), 28 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:43:05,167 INFO L276 IsEmpty]: Start isEmpty. Operand 22759 states and 28912 transitions. [2023-12-18 23:43:05,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-18 23:43:05,168 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:43:05,168 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-18 23:43:05,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-18 23:43:05,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:43:05,374 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:43:05,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:43:05,375 INFO L85 PathProgramCache]: Analyzing trace with hash 2033955118, now seen corresponding path program 1 times [2023-12-18 23:43:05,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:43:05,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480663619] [2023-12-18 23:43:05,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:43:05,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:43:05,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:43:06,111 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:43:06,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:43:06,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480663619] [2023-12-18 23:43:06,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480663619] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:43:06,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28887279] [2023-12-18 23:43:06,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:43:06,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:43:06,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:43:06,116 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) [2023-12-18 23:43:06,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-18 23:43:06,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:43:06,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-18 23:43:06,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:43:07,963 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:43:07,963 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:43:09,727 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:43:09,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28887279] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:43:09,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:43:09,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17, 17] total 43 [2023-12-18 23:43:09,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180478220] [2023-12-18 23:43:09,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:43:09,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-18 23:43:09,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:43:09,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-18 23:43:09,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=1584, Unknown=0, NotChecked=0, Total=1806 [2023-12-18 23:43:09,729 INFO L87 Difference]: Start difference. First operand 22759 states and 28912 transitions. Second operand has 43 states, 43 states have (on average 4.651162790697675) internal successors, (200), 43 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:43:26,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:43:26,269 INFO L93 Difference]: Finished difference Result 43182 states and 54179 transitions. [2023-12-18 23:43:26,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2023-12-18 23:43:26,269 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.651162790697675) internal successors, (200), 43 states have internal predecessors, (200), 0 states have call successors, (0), 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 73 [2023-12-18 23:43:26,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:43:26,306 INFO L225 Difference]: With dead ends: 43182 [2023-12-18 23:43:26,306 INFO L226 Difference]: Without dead ends: 32564 [2023-12-18 23:43:26,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11300 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=6000, Invalid=23070, Unknown=0, NotChecked=0, Total=29070 [2023-12-18 23:43:26,327 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 16815 mSDsluCounter, 21987 mSDsCounter, 0 mSdLazyCounter, 2175 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16815 SdHoareTripleChecker+Valid, 23527 SdHoareTripleChecker+Invalid, 2272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 2175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-18 23:43:26,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16815 Valid, 23527 Invalid, 2272 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [97 Valid, 2175 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-18 23:43:26,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32564 states. [2023-12-18 23:43:27,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32564 to 24849. [2023-12-18 23:43:27,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24849 states, 24847 states have (on average 1.2686441019036503) internal successors, (31522), 24848 states have internal predecessors, (31522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:43:27,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24849 states to 24849 states and 31522 transitions. [2023-12-18 23:43:27,393 INFO L78 Accepts]: Start accepts. Automaton has 24849 states and 31522 transitions. Word has length 73 [2023-12-18 23:43:27,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:43:27,393 INFO L495 AbstractCegarLoop]: Abstraction has 24849 states and 31522 transitions. [2023-12-18 23:43:27,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 4.651162790697675) internal successors, (200), 43 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:43:27,393 INFO L276 IsEmpty]: Start isEmpty. Operand 24849 states and 31522 transitions. [2023-12-18 23:43:27,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-18 23:43:27,394 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:43:27,394 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-18 23:43:27,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-18 23:43:27,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-18 23:43:27,603 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:43:27,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:43:27,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1960468014, now seen corresponding path program 1 times [2023-12-18 23:43:27,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:43:27,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46420763] [2023-12-18 23:43:27,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:43:27,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:43:27,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:43:28,032 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:43:28,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:43:28,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46420763] [2023-12-18 23:43:28,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46420763] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:43:28,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415691731] [2023-12-18 23:43:28,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:43:28,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:43:28,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:43:28,034 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) [2023-12-18 23:43:28,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-18 23:43:28,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:43:28,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-18 23:43:28,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:43:28,763 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:43:28,763 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:43:29,831 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:43:29,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415691731] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:43:29,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:43:29,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2023-12-18 23:43:29,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903072077] [2023-12-18 23:43:29,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:43:29,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-18 23:43:29,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:43:29,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-18 23:43:29,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=941, Unknown=0, NotChecked=0, Total=1056 [2023-12-18 23:43:29,833 INFO L87 Difference]: Start difference. First operand 24849 states and 31522 transitions. Second operand has 33 states, 33 states have (on average 5.454545454545454) internal successors, (180), 33 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:43:32,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:43:32,526 INFO L93 Difference]: Finished difference Result 32482 states and 40921 transitions. [2023-12-18 23:43:32,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-18 23:43:32,527 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.454545454545454) internal successors, (180), 33 states have internal predecessors, (180), 0 states have call successors, (0), 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 73 [2023-12-18 23:43:32,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:43:32,543 INFO L225 Difference]: With dead ends: 32482 [2023-12-18 23:43:32,544 INFO L226 Difference]: Without dead ends: 15847 [2023-12-18 23:43:32,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 959 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1008, Invalid=3548, Unknown=0, NotChecked=0, Total=4556 [2023-12-18 23:43:32,557 INFO L413 NwaCegarLoop]: 1499 mSDtfsCounter, 11145 mSDsluCounter, 20993 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11145 SdHoareTripleChecker+Valid, 22492 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-18 23:43:32,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11145 Valid, 22492 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 923 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-18 23:43:32,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15847 states. [2023-12-18 23:43:33,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15847 to 15095. [2023-12-18 23:43:33,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15095 states, 15093 states have (on average 1.2936460610879215) internal successors, (19525), 15094 states have internal predecessors, (19525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:43:33,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15095 states to 15095 states and 19525 transitions. [2023-12-18 23:43:33,180 INFO L78 Accepts]: Start accepts. Automaton has 15095 states and 19525 transitions. Word has length 73 [2023-12-18 23:43:33,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:43:33,180 INFO L495 AbstractCegarLoop]: Abstraction has 15095 states and 19525 transitions. [2023-12-18 23:43:33,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.454545454545454) internal successors, (180), 33 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:43:33,181 INFO L276 IsEmpty]: Start isEmpty. Operand 15095 states and 19525 transitions. [2023-12-18 23:43:33,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-18 23:43:33,183 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:43:33,183 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-12-18 23:43:33,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-18 23:43:33,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:43:33,391 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:43:33,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:43:33,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1066359965, now seen corresponding path program 1 times [2023-12-18 23:43:33,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:43:33,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423951479] [2023-12-18 23:43:33,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:43:33,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:43:33,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:43:34,036 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 36 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:43:34,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:43:34,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423951479] [2023-12-18 23:43:34,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423951479] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:43:34,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469646736] [2023-12-18 23:43:34,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:43:34,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:43:34,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:43:34,041 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) [2023-12-18 23:43:34,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-18 23:43:34,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:43:34,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-18 23:43:34,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:43:34,720 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 50 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:43:34,720 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:43:36,492 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 44 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:43:36,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469646736] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:43:36,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:43:36,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 31 [2023-12-18 23:43:36,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856797481] [2023-12-18 23:43:36,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:43:36,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-18 23:43:36,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:43:36,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-18 23:43:36,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=885, Unknown=0, NotChecked=0, Total=992 [2023-12-18 23:43:36,494 INFO L87 Difference]: Start difference. First operand 15095 states and 19525 transitions. Second operand has 32 states, 32 states have (on average 9.625) internal successors, (308), 31 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:43:40,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:43:40,517 INFO L93 Difference]: Finished difference Result 42752 states and 53997 transitions. [2023-12-18 23:43:40,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-12-18 23:43:40,517 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 9.625) internal successors, (308), 31 states have internal predecessors, (308), 0 states have call successors, (0), 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 117 [2023-12-18 23:43:40,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:43:40,545 INFO L225 Difference]: With dead ends: 42752 [2023-12-18 23:43:40,546 INFO L226 Difference]: Without dead ends: 31402 [2023-12-18 23:43:40,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1465 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1362, Invalid=5778, Unknown=0, NotChecked=0, Total=7140 [2023-12-18 23:43:40,556 INFO L413 NwaCegarLoop]: 1510 mSDtfsCounter, 20040 mSDsluCounter, 15467 mSDsCounter, 0 mSdLazyCounter, 1230 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20040 SdHoareTripleChecker+Valid, 16977 SdHoareTripleChecker+Invalid, 1274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-18 23:43:40,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20040 Valid, 16977 Invalid, 1274 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [44 Valid, 1230 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-18 23:43:40,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31402 states. [2023-12-18 23:43:41,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31402 to 26308. [2023-12-18 23:43:41,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26308 states, 26306 states have (on average 1.2477001444537368) internal successors, (32822), 26307 states have internal predecessors, (32822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:43:41,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26308 states to 26308 states and 32822 transitions. [2023-12-18 23:43:41,818 INFO L78 Accepts]: Start accepts. Automaton has 26308 states and 32822 transitions. Word has length 117 [2023-12-18 23:43:41,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:43:41,818 INFO L495 AbstractCegarLoop]: Abstraction has 26308 states and 32822 transitions. [2023-12-18 23:43:41,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 9.625) internal successors, (308), 31 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:43:41,819 INFO L276 IsEmpty]: Start isEmpty. Operand 26308 states and 32822 transitions. [2023-12-18 23:43:41,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-18 23:43:41,822 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:43:41,822 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:43:41,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-18 23:43:42,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:43:42,023 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:43:42,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:43:42,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1802629909, now seen corresponding path program 1 times [2023-12-18 23:43:42,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:43:42,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135236474] [2023-12-18 23:43:42,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:43:42,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:43:42,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:43:42,757 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 13 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:43:42,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:43:42,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135236474] [2023-12-18 23:43:42,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135236474] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:43:42,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234230047] [2023-12-18 23:43:42,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:43:42,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:43:42,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:43:42,759 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) [2023-12-18 23:43:42,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-18 23:43:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:43:42,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-18 23:43:42,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:43:43,594 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 17 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:43:43,594 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:43:45,354 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 13 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:43:45,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234230047] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:43:45,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:43:45,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2023-12-18 23:43:45,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865502891] [2023-12-18 23:43:45,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:43:45,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-18 23:43:45,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:43:45,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-18 23:43:45,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2023-12-18 23:43:45,356 INFO L87 Difference]: Start difference. First operand 26308 states and 32822 transitions. Second operand has 27 states, 27 states have (on average 9.925925925925926) internal successors, (268), 26 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:43:47,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:43:47,035 INFO L93 Difference]: Finished difference Result 34733 states and 43186 transitions. [2023-12-18 23:43:47,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-18 23:43:47,036 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 9.925925925925926) internal successors, (268), 26 states have internal predecessors, (268), 0 states have call successors, (0), 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 117 [2023-12-18 23:43:47,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:43:47,065 INFO L225 Difference]: With dead ends: 34733 [2023-12-18 23:43:47,065 INFO L226 Difference]: Without dead ends: 26742 [2023-12-18 23:43:47,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 219 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=420, Invalid=1386, Unknown=0, NotChecked=0, Total=1806 [2023-12-18 23:43:47,072 INFO L413 NwaCegarLoop]: 1520 mSDtfsCounter, 12034 mSDsluCounter, 10791 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12034 SdHoareTripleChecker+Valid, 12311 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-18 23:43:47,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12034 Valid, 12311 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-18 23:43:47,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26742 states. [2023-12-18 23:43:48,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26742 to 21526. [2023-12-18 23:43:48,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21526 states, 21524 states have (on average 1.249349563278201) internal successors, (26891), 21525 states have internal predecessors, (26891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:43:48,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21526 states to 21526 states and 26891 transitions. [2023-12-18 23:43:48,223 INFO L78 Accepts]: Start accepts. Automaton has 21526 states and 26891 transitions. Word has length 117 [2023-12-18 23:43:48,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:43:48,223 INFO L495 AbstractCegarLoop]: Abstraction has 21526 states and 26891 transitions. [2023-12-18 23:43:48,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 9.925925925925926) internal successors, (268), 26 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:43:48,223 INFO L276 IsEmpty]: Start isEmpty. Operand 21526 states and 26891 transitions. [2023-12-18 23:43:48,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-18 23:43:48,227 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:43:48,227 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:43:48,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-18 23:43:48,432 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,SelfDestructingSolverStorable26 [2023-12-18 23:43:48,433 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:43:48,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:43:48,433 INFO L85 PathProgramCache]: Analyzing trace with hash -2021574936, now seen corresponding path program 1 times [2023-12-18 23:43:48,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:43:48,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532355698] [2023-12-18 23:43:48,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:43:48,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:43:48,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:43:49,217 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 22 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:43:49,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:43:49,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532355698] [2023-12-18 23:43:49,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532355698] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:43:49,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644170833] [2023-12-18 23:43:49,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:43:49,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:43:49,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:43:49,219 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) [2023-12-18 23:43:49,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-18 23:43:49,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:43:49,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-18 23:43:49,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:43:50,158 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 24 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:43:50,158 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:43:51,366 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 22 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:43:51,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644170833] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:43:51,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:43:51,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 30 [2023-12-18 23:43:51,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843740470] [2023-12-18 23:43:51,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:43:51,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-18 23:43:51,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:43:51,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-18 23:43:51,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=812, Unknown=0, NotChecked=0, Total=930 [2023-12-18 23:43:51,368 INFO L87 Difference]: Start difference. First operand 21526 states and 26891 transitions. Second operand has 31 states, 31 states have (on average 9.35483870967742) internal successors, (290), 30 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:43:53,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:43:53,456 INFO L93 Difference]: Finished difference Result 31940 states and 39702 transitions. [2023-12-18 23:43:53,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-18 23:43:53,456 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 9.35483870967742) internal successors, (290), 30 states have internal predecessors, (290), 0 states have call successors, (0), 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 118 [2023-12-18 23:43:53,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:43:53,477 INFO L225 Difference]: With dead ends: 31940 [2023-12-18 23:43:53,477 INFO L226 Difference]: Without dead ends: 22138 [2023-12-18 23:43:53,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 220 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=538, Invalid=2114, Unknown=0, NotChecked=0, Total=2652 [2023-12-18 23:43:53,486 INFO L413 NwaCegarLoop]: 1509 mSDtfsCounter, 18110 mSDsluCounter, 13573 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18110 SdHoareTripleChecker+Valid, 15082 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-18 23:43:53,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18110 Valid, 15082 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-18 23:43:53,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22138 states. [2023-12-18 23:43:54,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22138 to 21526. [2023-12-18 23:43:54,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21526 states, 21524 states have (on average 1.2395465526853744) internal successors, (26680), 21525 states have internal predecessors, (26680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:43:54,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21526 states to 21526 states and 26680 transitions. [2023-12-18 23:43:54,641 INFO L78 Accepts]: Start accepts. Automaton has 21526 states and 26680 transitions. Word has length 118 [2023-12-18 23:43:54,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:43:54,641 INFO L495 AbstractCegarLoop]: Abstraction has 21526 states and 26680 transitions. [2023-12-18 23:43:54,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 9.35483870967742) internal successors, (290), 30 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:43:54,641 INFO L276 IsEmpty]: Start isEmpty. Operand 21526 states and 26680 transitions. [2023-12-18 23:43:54,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-18 23:43:54,645 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:43:54,646 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:43:54,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-18 23:43:54,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-18 23:43:54,852 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:43:54,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:43:54,853 INFO L85 PathProgramCache]: Analyzing trace with hash 2083309595, now seen corresponding path program 1 times [2023-12-18 23:43:54,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:43:54,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772928415] [2023-12-18 23:43:54,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:43:54,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:43:54,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:43:56,337 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 40 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:43:56,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:43:56,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772928415] [2023-12-18 23:43:56,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772928415] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:43:56,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350865819] [2023-12-18 23:43:56,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:43:56,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:43:56,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:43:56,339 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:43:56,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-18 23:43:56,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:43:56,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-18 23:43:56,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:43:59,307 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 22 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:43:59,307 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:44:04,268 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 22 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:44:04,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350865819] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:44:04,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:44:04,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 72 [2023-12-18 23:44:04,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511895749] [2023-12-18 23:44:04,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:44:04,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2023-12-18 23:44:04,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:44:04,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2023-12-18 23:44:04,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=340, Invalid=4772, Unknown=0, NotChecked=0, Total=5112 [2023-12-18 23:44:04,271 INFO L87 Difference]: Start difference. First operand 21526 states and 26680 transitions. Second operand has 72 states, 72 states have (on average 4.569444444444445) internal successors, (329), 72 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:46:08,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:46:08,710 INFO L93 Difference]: Finished difference Result 47955 states and 58125 transitions. [2023-12-18 23:46:08,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 382 states. [2023-12-18 23:46:08,711 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 4.569444444444445) internal successors, (329), 72 states have internal predecessors, (329), 0 states have call successors, (0), 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 119 [2023-12-18 23:46:08,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:46:08,747 INFO L225 Difference]: With dead ends: 47955 [2023-12-18 23:46:08,747 INFO L226 Difference]: Without dead ends: 44706 [2023-12-18 23:46:08,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 641 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 449 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77420 ImplicationChecksByTransitivity, 112.8s TimeCoverageRelationStatistics Valid=19199, Invalid=183751, Unknown=0, NotChecked=0, Total=202950 [2023-12-18 23:46:08,769 INFO L413 NwaCegarLoop]: 1688 mSDtfsCounter, 33224 mSDsluCounter, 64641 mSDsCounter, 0 mSdLazyCounter, 12524 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33224 SdHoareTripleChecker+Valid, 66329 SdHoareTripleChecker+Invalid, 12962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 12524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:46:08,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33224 Valid, 66329 Invalid, 12962 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [438 Valid, 12524 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2023-12-18 23:46:08,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44706 states. [2023-12-18 23:46:11,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44706 to 29206. [2023-12-18 23:46:11,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29206 states, 29204 states have (on average 1.2255170524585672) internal successors, (35790), 29205 states have internal predecessors, (35790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:46:11,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29206 states to 29206 states and 35790 transitions. [2023-12-18 23:46:11,054 INFO L78 Accepts]: Start accepts. Automaton has 29206 states and 35790 transitions. Word has length 119 [2023-12-18 23:46:11,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:46:11,054 INFO L495 AbstractCegarLoop]: Abstraction has 29206 states and 35790 transitions. [2023-12-18 23:46:11,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 4.569444444444445) internal successors, (329), 72 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:46:11,054 INFO L276 IsEmpty]: Start isEmpty. Operand 29206 states and 35790 transitions. [2023-12-18 23:46:11,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-18 23:46:11,058 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:46:11,058 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:46:11,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-18 23:46:11,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-18 23:46:11,261 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:46:11,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:46:11,262 INFO L85 PathProgramCache]: Analyzing trace with hash -970063708, now seen corresponding path program 1 times [2023-12-18 23:46:11,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:46:11,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605136555] [2023-12-18 23:46:11,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:46:11,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:46:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:46:12,143 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 13 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:46:12,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:46:12,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605136555] [2023-12-18 23:46:12,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605136555] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:46:12,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471882427] [2023-12-18 23:46:12,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:46:12,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:46:12,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:46:12,145 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:46:12,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-18 23:46:12,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:46:12,296 INFO L262 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-18 23:46:12,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:46:13,838 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 40 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:46:13,838 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:46:23,267 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 39 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:46:23,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471882427] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:46:23,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:46:23,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 21] total 54 [2023-12-18 23:46:23,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897347547] [2023-12-18 23:46:23,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:46:23,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-12-18 23:46:23,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:46:23,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-12-18 23:46:23,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=2597, Unknown=0, NotChecked=0, Total=2862 [2023-12-18 23:46:23,269 INFO L87 Difference]: Start difference. First operand 29206 states and 35790 transitions. Second operand has 54 states, 54 states have (on average 6.425925925925926) internal successors, (347), 54 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:47:04,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:47:04,636 INFO L93 Difference]: Finished difference Result 74031 states and 89722 transitions. [2023-12-18 23:47:04,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2023-12-18 23:47:04,636 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 6.425925925925926) internal successors, (347), 54 states have internal predecessors, (347), 0 states have call successors, (0), 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 120 [2023-12-18 23:47:04,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:47:04,680 INFO L225 Difference]: With dead ends: 74031 [2023-12-18 23:47:04,680 INFO L226 Difference]: Without dead ends: 49682 [2023-12-18 23:47:04,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 205 SyntacticMatches, 1 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21563 ImplicationChecksByTransitivity, 36.9s TimeCoverageRelationStatistics Valid=8718, Invalid=55544, Unknown=0, NotChecked=0, Total=64262 [2023-12-18 23:47:04,694 INFO L413 NwaCegarLoop]: 1645 mSDtfsCounter, 33820 mSDsluCounter, 35878 mSDsCounter, 0 mSdLazyCounter, 4420 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33820 SdHoareTripleChecker+Valid, 37523 SdHoareTripleChecker+Invalid, 4951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 4420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-18 23:47:04,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33820 Valid, 37523 Invalid, 4951 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [531 Valid, 4420 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-18 23:47:04,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49682 states. [2023-12-18 23:47:08,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49682 to 39063. [2023-12-18 23:47:08,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39063 states, 39061 states have (on average 1.2195284298917077) internal successors, (47636), 39062 states have internal predecessors, (47636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:47:08,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39063 states to 39063 states and 47636 transitions. [2023-12-18 23:47:08,263 INFO L78 Accepts]: Start accepts. Automaton has 39063 states and 47636 transitions. Word has length 120 [2023-12-18 23:47:08,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:47:08,263 INFO L495 AbstractCegarLoop]: Abstraction has 39063 states and 47636 transitions. [2023-12-18 23:47:08,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 6.425925925925926) internal successors, (347), 54 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:47:08,263 INFO L276 IsEmpty]: Start isEmpty. Operand 39063 states and 47636 transitions. [2023-12-18 23:47:08,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-18 23:47:08,267 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:47:08,267 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:47:08,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-18 23:47:08,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:47:08,472 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:47:08,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:47:08,473 INFO L85 PathProgramCache]: Analyzing trace with hash 215697854, now seen corresponding path program 1 times [2023-12-18 23:47:08,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:47:08,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405257243] [2023-12-18 23:47:08,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:47:08,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:47:08,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:47:09,647 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 32 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:47:09,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:47:09,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405257243] [2023-12-18 23:47:09,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405257243] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:47:09,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286024587] [2023-12-18 23:47:09,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:47:09,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:47:09,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:47:09,649 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:47:09,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-18 23:47:09,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:47:09,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-18 23:47:09,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:47:13,214 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 13 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:47:13,214 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:47:19,132 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 13 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:47:19,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286024587] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:47:19,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:47:19,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 30, 30] total 77 [2023-12-18 23:47:19,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348100112] [2023-12-18 23:47:19,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:47:19,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2023-12-18 23:47:19,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:47:19,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2023-12-18 23:47:19,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=443, Invalid=5409, Unknown=0, NotChecked=0, Total=5852 [2023-12-18 23:47:19,135 INFO L87 Difference]: Start difference. First operand 39063 states and 47636 transitions. Second operand has 77 states, 77 states have (on average 4.51948051948052) internal successors, (348), 77 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:49:48,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:49:48,312 INFO L93 Difference]: Finished difference Result 71138 states and 85073 transitions. [2023-12-18 23:49:48,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 346 states. [2023-12-18 23:49:48,312 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 4.51948051948052) internal successors, (348), 77 states have internal predecessors, (348), 0 states have call successors, (0), 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 120 [2023-12-18 23:49:48,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:49:48,368 INFO L225 Difference]: With dead ends: 71138 [2023-12-18 23:49:48,368 INFO L226 Difference]: Without dead ends: 67685 [2023-12-18 23:49:48,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 182 SyntacticMatches, 1 SemanticMatches, 411 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64378 ImplicationChecksByTransitivity, 137.2s TimeCoverageRelationStatistics Valid=16172, Invalid=153984, Unknown=0, NotChecked=0, Total=170156 [2023-12-18 23:49:48,380 INFO L413 NwaCegarLoop]: 1562 mSDtfsCounter, 29060 mSDsluCounter, 42526 mSDsCounter, 0 mSdLazyCounter, 7243 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29060 SdHoareTripleChecker+Valid, 44088 SdHoareTripleChecker+Invalid, 7608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 7243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2023-12-18 23:49:48,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29060 Valid, 44088 Invalid, 7608 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [365 Valid, 7243 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2023-12-18 23:49:48,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67685 states. [2023-12-18 23:49:52,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67685 to 41814. [2023-12-18 23:49:52,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41814 states, 41812 states have (on average 1.2164211231225486) internal successors, (50861), 41813 states have internal predecessors, (50861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:49:52,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41814 states to 41814 states and 50861 transitions. [2023-12-18 23:49:52,823 INFO L78 Accepts]: Start accepts. Automaton has 41814 states and 50861 transitions. Word has length 120 [2023-12-18 23:49:52,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:49:52,823 INFO L495 AbstractCegarLoop]: Abstraction has 41814 states and 50861 transitions. [2023-12-18 23:49:52,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 4.51948051948052) internal successors, (348), 77 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:49:52,823 INFO L276 IsEmpty]: Start isEmpty. Operand 41814 states and 50861 transitions. [2023-12-18 23:49:52,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-18 23:49:52,826 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:49:52,826 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:49:52,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-18 23:49:53,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:49:53,027 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:49:53,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:49:53,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1063258684, now seen corresponding path program 1 times [2023-12-18 23:49:53,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:49:53,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426479630] [2023-12-18 23:49:53,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:49:53,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:49:53,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:49:53,691 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 31 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:49:53,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:49:53,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426479630] [2023-12-18 23:49:53,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426479630] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:49:53,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721171223] [2023-12-18 23:49:53,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:49:53,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:49:53,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:49:53,693 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:49:53,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-18 23:49:53,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:49:53,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-18 23:49:53,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:49:54,533 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 19 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:49:54,533 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:49:56,277 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 14 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:49:56,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721171223] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:49:56,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:49:56,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 35 [2023-12-18 23:49:56,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048351736] [2023-12-18 23:49:56,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:49:56,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-18 23:49:56,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:49:56,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-18 23:49:56,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1087, Unknown=0, NotChecked=0, Total=1190 [2023-12-18 23:49:56,279 INFO L87 Difference]: Start difference. First operand 41814 states and 50861 transitions. Second operand has 35 states, 35 states have (on average 9.485714285714286) internal successors, (332), 35 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:50:15,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:50:15,130 INFO L93 Difference]: Finished difference Result 126447 states and 151744 transitions. [2023-12-18 23:50:15,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2023-12-18 23:50:15,130 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 9.485714285714286) internal successors, (332), 35 states have internal predecessors, (332), 0 states have call successors, (0), 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 120 [2023-12-18 23:50:15,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:50:15,210 INFO L225 Difference]: With dead ends: 126447 [2023-12-18 23:50:15,211 INFO L226 Difference]: Without dead ends: 92785 [2023-12-18 23:50:15,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9955 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=4209, Invalid=25893, Unknown=0, NotChecked=0, Total=30102 [2023-12-18 23:50:15,224 INFO L413 NwaCegarLoop]: 1576 mSDtfsCounter, 22641 mSDsluCounter, 22362 mSDsCounter, 0 mSdLazyCounter, 2237 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22641 SdHoareTripleChecker+Valid, 23938 SdHoareTripleChecker+Invalid, 2361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 2237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-18 23:50:15,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22641 Valid, 23938 Invalid, 2361 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [124 Valid, 2237 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-18 23:50:15,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92785 states. [2023-12-18 23:50:19,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92785 to 40384. [2023-12-18 23:50:19,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40384 states, 40382 states have (on average 1.2019216482591253) internal successors, (48536), 40383 states have internal predecessors, (48536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:50:20,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40384 states to 40384 states and 48536 transitions. [2023-12-18 23:50:20,003 INFO L78 Accepts]: Start accepts. Automaton has 40384 states and 48536 transitions. Word has length 120 [2023-12-18 23:50:20,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:50:20,003 INFO L495 AbstractCegarLoop]: Abstraction has 40384 states and 48536 transitions. [2023-12-18 23:50:20,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 9.485714285714286) internal successors, (332), 35 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:50:20,003 INFO L276 IsEmpty]: Start isEmpty. Operand 40384 states and 48536 transitions. [2023-12-18 23:50:20,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-18 23:50:20,006 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:50:20,006 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:50:20,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-18 23:50:20,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-12-18 23:50:20,206 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:50:20,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:50:20,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1949816879, now seen corresponding path program 1 times [2023-12-18 23:50:20,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:50:20,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140486615] [2023-12-18 23:50:20,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:50:20,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:50:20,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:50:21,836 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 28 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:50:21,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:50:21,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140486615] [2023-12-18 23:50:21,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140486615] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:50:21,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593504581] [2023-12-18 23:50:21,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:50:21,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:50:21,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:50:21,838 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:50:21,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-18 23:50:21,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:50:21,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 77 conjunts are in the unsatisfiable core [2023-12-18 23:50:21,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:50:28,567 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 28 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:50:28,567 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:50:38,394 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 24 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:50:38,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593504581] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:50:38,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:50:38,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 36, 37] total 98 [2023-12-18 23:50:38,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141431439] [2023-12-18 23:50:38,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:50:38,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2023-12-18 23:50:38,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:50:38,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2023-12-18 23:50:38,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=887, Invalid=8619, Unknown=0, NotChecked=0, Total=9506 [2023-12-18 23:50:38,397 INFO L87 Difference]: Start difference. First operand 40384 states and 48536 transitions. Second operand has 98 states, 98 states have (on average 3.489795918367347) internal successors, (342), 98 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-18 23:55:48,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 433 states. [2023-12-18 23:55:48,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 688 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 515 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109524 ImplicationChecksByTransitivity, 304.3s TimeCoverageRelationStatistics Valid=26015, Invalid=240757, Unknown=0, NotChecked=0, Total=266772 [2023-12-18 23:55:48,200 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 12292 mSDsluCounter, 7853 mSDsCounter, 0 mSdLazyCounter, 6634 mSolverCounterSat, 606 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12292 SdHoareTripleChecker+Valid, 8121 SdHoareTripleChecker+Invalid, 7240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 606 IncrementalHoareTripleChecker+Valid, 6634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2023-12-18 23:55:48,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12292 Valid, 8121 Invalid, 7240 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [606 Valid, 6634 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2023-12-18 23:55:48,202 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-18 23:55:48,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-18 23:55:48,224 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-18 23:55:48,225 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-18 23:55:48,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:55:48,409 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (40384states) and FLOYD_HOARE automaton (currently 433 states, 98 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-18-9-4-3-2-4-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ATOM-1 context. [2023-12-18 23:55:48,411 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-18 23:55:48,415 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:55:48,419 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-18 23:55:48,420 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 11:55:48 BoogieIcfgContainer [2023-12-18 23:55:48,421 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-18 23:55:48,421 INFO L158 Benchmark]: Toolchain (without parser) took 799573.43ms. Allocated memory was 287.3MB in the beginning and 3.2GB in the end (delta: 2.9GB). Free memory was 227.4MB in the beginning and 691.8MB in the end (delta: -464.4MB). Peak memory consumption was 2.5GB. Max. memory is 8.0GB. [2023-12-18 23:55:48,423 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 195.0MB. Free memory is still 142.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-18 23:55:48,423 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1733.49ms. Allocated memory is still 287.3MB. Free memory was 227.4MB in the beginning and 165.5MB in the end (delta: 61.9MB). Peak memory consumption was 120.1MB. Max. memory is 8.0GB. [2023-12-18 23:55:48,425 INFO L158 Benchmark]: Boogie Procedure Inliner took 401.19ms. Allocated memory is still 287.3MB. Free memory was 165.5MB in the beginning and 189.4MB in the end (delta: -23.8MB). Peak memory consumption was 84.2MB. Max. memory is 8.0GB. [2023-12-18 23:55:48,426 INFO L158 Benchmark]: Boogie Preprocessor took 466.18ms. Allocated memory was 287.3MB in the beginning and 466.6MB in the end (delta: 179.3MB). Free memory was 188.8MB in the beginning and 346.7MB in the end (delta: -157.9MB). Peak memory consumption was 127.2MB. Max. memory is 8.0GB. [2023-12-18 23:55:48,427 INFO L158 Benchmark]: RCFGBuilder took 3950.68ms. Allocated memory was 466.6MB in the beginning and 734.0MB in the end (delta: 267.4MB). Free memory was 346.7MB in the beginning and 497.1MB in the end (delta: -150.4MB). Peak memory consumption was 296.0MB. Max. memory is 8.0GB. [2023-12-18 23:55:48,428 INFO L158 Benchmark]: TraceAbstraction took 793014.63ms. Allocated memory was 734.0MB in the beginning and 3.2GB in the end (delta: 2.5GB). Free memory was 496.5MB in the beginning and 691.8MB in the end (delta: -195.2MB). Peak memory consumption was 2.3GB. Max. memory is 8.0GB. [2023-12-18 23:55:48,428 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 195.0MB. Free memory is still 142.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1733.49ms. Allocated memory is still 287.3MB. Free memory was 227.4MB in the beginning and 165.5MB in the end (delta: 61.9MB). Peak memory consumption was 120.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 401.19ms. Allocated memory is still 287.3MB. Free memory was 165.5MB in the beginning and 189.4MB in the end (delta: -23.8MB). Peak memory consumption was 84.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 466.18ms. Allocated memory was 287.3MB in the beginning and 466.6MB in the end (delta: 179.3MB). Free memory was 188.8MB in the beginning and 346.7MB in the end (delta: -157.9MB). Peak memory consumption was 127.2MB. Max. memory is 8.0GB. * RCFGBuilder took 3950.68ms. Allocated memory was 466.6MB in the beginning and 734.0MB in the end (delta: 267.4MB). Free memory was 346.7MB in the beginning and 497.1MB in the end (delta: -150.4MB). Peak memory consumption was 296.0MB. Max. memory is 8.0GB. * TraceAbstraction took 793014.63ms. Allocated memory was 734.0MB in the beginning and 3.2GB in the end (delta: 2.5GB). Free memory was 496.5MB in the beginning and 691.8MB in the end (delta: -195.2MB). Peak memory consumption was 2.3GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 366]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 366). Cancelled while NwaCegarLoop was constructing difference of abstraction (40384states) and FLOYD_HOARE automaton (currently 433 states, 98 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-18-9-4-3-2-4-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 561]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 561). Cancelled while NwaCegarLoop was constructing difference of abstraction (40384states) and FLOYD_HOARE automaton (currently 433 states, 98 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-18-9-4-3-2-4-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 822 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 793.0s, OverallIterations: 33, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 686.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 319558 SdHoareTripleChecker+Valid, 44.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 319558 mSDsluCounter, 352091 SdHoareTripleChecker+Invalid, 39.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 303133 mSDsCounter, 3647 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 47412 IncrementalHoareTripleChecker+Invalid, 51059 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3647 mSolverCounterUnsat, 48958 mSDtfsCounter, 47412 mSolverCounterSat, 1.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4902 GetRequests, 2421 SyntacticMatches, 4 SemanticMatches, 2476 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300125 ImplicationChecksByTransitivity, 626.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41814occurred in iteration=31, InterpolantAutomatonStates: 1545, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 23.7s AutomataMinimizationTime, 32 MinimizatonAttempts, 137588 StatesRemovedByMinimization, 29 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 77.3s InterpolantComputationTime, 3721 NumberOfCodeBlocks, 3721 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 5042 ConstructedInterpolants, 0 QuantifiedInterpolants, 116106 SizeOfPredicates, 126 NumberOfNonLiveVariables, 6216 ConjunctsInSsa, 392 ConjunctsInUnsatCore, 61 InterpolantComputations, 19 PerfectInterpolantSequences, 857/2714 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown