/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/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 23:25:33,513 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 23:25:33,557 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 23:25:33,560 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 23:25:33,560 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 23:25:33,582 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 23:25:33,582 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 23:25:33,583 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 23:25:33,583 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 23:25:33,583 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 23:25:33,584 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 23:25:33,584 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 23:25:33,584 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 23:25:33,584 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 23:25:33,585 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 23:25:33,585 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 23:25:33,585 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 23:25:33,585 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 23:25:33,586 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 23:25:33,586 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 23:25:33,586 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 23:25:33,587 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 23:25:33,587 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 23:25:33,587 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 23:25:33,587 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 23:25:33,587 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 23:25:33,588 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 23:25:33,588 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 23:25:33,588 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 23:25:33,588 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 23:25:33,589 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 23:25:33,589 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 23:25:33,589 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:25:33,589 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 23:25:33,590 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 23:25:33,590 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 23:25:33,590 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 23:25:33,590 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 23:25:33,590 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 23:25:33,591 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 23:25:33,591 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 23:25:33,591 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 23:25:33,591 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 23:25:33,591 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 23:25:33,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 23:25:33,822 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 23:25:33,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 23:25:33,825 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 23:25:33,825 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 23:25:33,826 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2023-12-15 23:25:34,853 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 23:25:35,036 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 23:25:35,037 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2023-12-15 23:25:35,052 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d579c1e7/7c33d94c5668468eaecba5c605270ce4/FLAG7ba806cef [2023-12-15 23:25:35,062 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d579c1e7/7c33d94c5668468eaecba5c605270ce4 [2023-12-15 23:25:35,063 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 23:25:35,064 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 23:25:35,065 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 23:25:35,065 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 23:25:35,069 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 23:25:35,070 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:25:35" (1/1) ... [2023-12-15 23:25:35,070 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1406b7f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:25:35, skipping insertion in model container [2023-12-15 23:25:35,070 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:25:35" (1/1) ... [2023-12-15 23:25:35,124 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 23:25:35,310 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[14519,14532] [2023-12-15 23:25:35,362 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:25:35,380 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 23:25:35,451 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[14519,14532] [2023-12-15 23:25:35,508 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:25:35,521 INFO L206 MainTranslator]: Completed translation [2023-12-15 23:25:35,521 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:25:35 WrapperNode [2023-12-15 23:25:35,521 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 23:25:35,522 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 23:25:35,522 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 23:25:35,522 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 23:25:35,528 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:25:35" (1/1) ... [2023-12-15 23:25:35,544 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:25:35" (1/1) ... [2023-12-15 23:25:35,579 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1241 [2023-12-15 23:25:35,579 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 23:25:35,580 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 23:25:35,580 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 23:25:35,580 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 23:25:35,588 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:25:35" (1/1) ... [2023-12-15 23:25:35,588 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:25:35" (1/1) ... [2023-12-15 23:25:35,598 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:25:35" (1/1) ... [2023-12-15 23:25:35,618 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 23:25:35,619 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:25:35" (1/1) ... [2023-12-15 23:25:35,619 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:25:35" (1/1) ... [2023-12-15 23:25:35,646 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:25:35" (1/1) ... [2023-12-15 23:25:35,668 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:25:35" (1/1) ... [2023-12-15 23:25:35,673 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:25:35" (1/1) ... [2023-12-15 23:25:35,676 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:25:35" (1/1) ... [2023-12-15 23:25:35,698 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 23:25:35,699 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 23:25:35,699 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 23:25:35,699 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 23:25:35,700 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:25:35" (1/1) ... [2023-12-15 23:25:35,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:25:35,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:25:35,733 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 23:25:35,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 23:25:35,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 23:25:35,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 23:25:35,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 23:25:35,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 23:25:35,910 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 23:25:35,912 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 23:25:36,705 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 23:25:36,747 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 23:25:36,747 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-15 23:25:36,747 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:25:36 BoogieIcfgContainer [2023-12-15 23:25:36,747 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 23:25:36,750 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 23:25:36,750 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 23:25:36,752 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 23:25:36,752 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:25:35" (1/3) ... [2023-12-15 23:25:36,753 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a9114ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:25:36, skipping insertion in model container [2023-12-15 23:25:36,753 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:25:35" (2/3) ... [2023-12-15 23:25:36,754 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a9114ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:25:36, skipping insertion in model container [2023-12-15 23:25:36,754 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:25:36" (3/3) ... [2023-12-15 23:25:36,755 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2023-12-15 23:25:36,766 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 23:25:36,766 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 23:25:36,816 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 23:25:36,821 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;@4d74d046, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 23:25:36,822 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 23:25:36,829 INFO L276 IsEmpty]: Start isEmpty. Operand has 303 states, 301 states have (on average 1.7906976744186047) internal successors, (539), 302 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:36,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-15 23:25:36,843 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:25:36,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:25:36,844 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:25:36,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:25:36,848 INFO L85 PathProgramCache]: Analyzing trace with hash 383113583, now seen corresponding path program 1 times [2023-12-15 23:25:36,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:25:36,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192640430] [2023-12-15 23:25:36,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:25:36,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:25:37,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:25:37,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:25:37,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:25:37,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192640430] [2023-12-15 23:25:37,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192640430] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:25:37,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:25:37,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:25:37,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052981295] [2023-12-15 23:25:37,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:25:37,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:25:37,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:25:37,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:25:37,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:25:37,319 INFO L87 Difference]: Start difference. First operand has 303 states, 301 states have (on average 1.7906976744186047) internal successors, (539), 302 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:37,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:25:37,458 INFO L93 Difference]: Finished difference Result 608 states and 1074 transitions. [2023-12-15 23:25:37,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:25:37,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2023-12-15 23:25:37,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:25:37,470 INFO L225 Difference]: With dead ends: 608 [2023-12-15 23:25:37,470 INFO L226 Difference]: Without dead ends: 494 [2023-12-15 23:25:37,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:25:37,474 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 360 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:25:37,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 887 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:25:37,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2023-12-15 23:25:37,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 492. [2023-12-15 23:25:37,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 491 states have (on average 1.4969450101832993) internal successors, (735), 491 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:37,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 735 transitions. [2023-12-15 23:25:37,524 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 735 transitions. Word has length 143 [2023-12-15 23:25:37,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:25:37,524 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 735 transitions. [2023-12-15 23:25:37,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:37,525 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 735 transitions. [2023-12-15 23:25:37,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-15 23:25:37,528 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:25:37,528 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:25:37,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 23:25:37,529 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:25:37,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:25:37,529 INFO L85 PathProgramCache]: Analyzing trace with hash 313742097, now seen corresponding path program 1 times [2023-12-15 23:25:37,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:25:37,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520018742] [2023-12-15 23:25:37,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:25:37,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:25:37,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:25:37,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:25:37,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:25:37,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520018742] [2023-12-15 23:25:37,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520018742] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:25:37,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:25:37,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:25:37,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974433430] [2023-12-15 23:25:37,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:25:37,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:25:37,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:25:37,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:25:37,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:25:37,675 INFO L87 Difference]: Start difference. First operand 492 states and 735 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:37,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:25:37,730 INFO L93 Difference]: Finished difference Result 1062 states and 1632 transitions. [2023-12-15 23:25:37,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:25:37,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2023-12-15 23:25:37,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:25:37,738 INFO L225 Difference]: With dead ends: 1062 [2023-12-15 23:25:37,738 INFO L226 Difference]: Without dead ends: 864 [2023-12-15 23:25:37,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:25:37,743 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 274 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:25:37,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 724 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:25:37,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2023-12-15 23:25:37,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 862. [2023-12-15 23:25:37,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 861 states have (on average 1.5087108013937283) internal successors, (1299), 861 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:37,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1299 transitions. [2023-12-15 23:25:37,770 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1299 transitions. Word has length 143 [2023-12-15 23:25:37,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:25:37,771 INFO L495 AbstractCegarLoop]: Abstraction has 862 states and 1299 transitions. [2023-12-15 23:25:37,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:37,771 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1299 transitions. [2023-12-15 23:25:37,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-15 23:25:37,777 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:25:37,777 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:25:37,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 23:25:37,778 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:25:37,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:25:37,778 INFO L85 PathProgramCache]: Analyzing trace with hash 268643290, now seen corresponding path program 1 times [2023-12-15 23:25:37,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:25:37,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253349300] [2023-12-15 23:25:37,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:25:37,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:25:37,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:25:38,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:25:38,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:25:38,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253349300] [2023-12-15 23:25:38,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253349300] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:25:38,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:25:38,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:25:38,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476948226] [2023-12-15 23:25:38,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:25:38,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:25:38,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:25:38,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:25:38,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:25:38,139 INFO L87 Difference]: Start difference. First operand 862 states and 1299 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:38,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:25:38,198 INFO L93 Difference]: Finished difference Result 2523 states and 3792 transitions. [2023-12-15 23:25:38,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:25:38,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2023-12-15 23:25:38,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:25:38,204 INFO L225 Difference]: With dead ends: 2523 [2023-12-15 23:25:38,204 INFO L226 Difference]: Without dead ends: 1669 [2023-12-15 23:25:38,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:25:38,209 INFO L413 NwaCegarLoop]: 754 mSDtfsCounter, 886 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:25:38,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [886 Valid, 1151 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:25:38,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1669 states. [2023-12-15 23:25:38,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1669 to 1667. [2023-12-15 23:25:38,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1666 states have (on average 1.4915966386554622) internal successors, (2485), 1666 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:38,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 2485 transitions. [2023-12-15 23:25:38,242 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 2485 transitions. Word has length 143 [2023-12-15 23:25:38,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:25:38,245 INFO L495 AbstractCegarLoop]: Abstraction has 1667 states and 2485 transitions. [2023-12-15 23:25:38,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:38,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 2485 transitions. [2023-12-15 23:25:38,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-15 23:25:38,250 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:25:38,251 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:25:38,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 23:25:38,251 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:25:38,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:25:38,252 INFO L85 PathProgramCache]: Analyzing trace with hash 869612546, now seen corresponding path program 1 times [2023-12-15 23:25:38,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:25:38,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473522314] [2023-12-15 23:25:38,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:25:38,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:25:38,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:25:38,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:25:38,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:25:38,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473522314] [2023-12-15 23:25:38,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473522314] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:25:38,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:25:38,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:25:38,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970696842] [2023-12-15 23:25:38,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:25:38,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:25:38,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:25:38,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:25:38,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:25:38,320 INFO L87 Difference]: Start difference. First operand 1667 states and 2485 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:38,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:25:38,349 INFO L93 Difference]: Finished difference Result 4965 states and 7395 transitions. [2023-12-15 23:25:38,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:25:38,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 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 144 [2023-12-15 23:25:38,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:25:38,360 INFO L225 Difference]: With dead ends: 4965 [2023-12-15 23:25:38,361 INFO L226 Difference]: Without dead ends: 3325 [2023-12-15 23:25:38,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:25:38,370 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 432 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:25:38,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 941 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:25:38,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3325 states. [2023-12-15 23:25:38,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3325 to 1669. [2023-12-15 23:25:38,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1669 states, 1668 states have (on average 1.4910071942446044) internal successors, (2487), 1668 states have internal predecessors, (2487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:38,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1669 states to 1669 states and 2487 transitions. [2023-12-15 23:25:38,414 INFO L78 Accepts]: Start accepts. Automaton has 1669 states and 2487 transitions. Word has length 144 [2023-12-15 23:25:38,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:25:38,414 INFO L495 AbstractCegarLoop]: Abstraction has 1669 states and 2487 transitions. [2023-12-15 23:25:38,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:38,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1669 states and 2487 transitions. [2023-12-15 23:25:38,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-15 23:25:38,417 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:25:38,417 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:25:38,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 23:25:38,417 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:25:38,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:25:38,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1169060635, now seen corresponding path program 1 times [2023-12-15 23:25:38,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:25:38,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752246916] [2023-12-15 23:25:38,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:25:38,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:25:38,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:25:38,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:25:38,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:25:38,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752246916] [2023-12-15 23:25:38,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752246916] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:25:38,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:25:38,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:25:38,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512770251] [2023-12-15 23:25:38,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:25:38,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:25:38,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:25:38,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:25:38,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:25:38,676 INFO L87 Difference]: Start difference. First operand 1669 states and 2487 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:38,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:25:38,737 INFO L93 Difference]: Finished difference Result 4861 states and 7223 transitions. [2023-12-15 23:25:38,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:25:38,738 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 145 [2023-12-15 23:25:38,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:25:38,746 INFO L225 Difference]: With dead ends: 4861 [2023-12-15 23:25:38,746 INFO L226 Difference]: Without dead ends: 3221 [2023-12-15 23:25:38,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:25:38,754 INFO L413 NwaCegarLoop]: 735 mSDtfsCounter, 870 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:25:38,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 1132 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:25:38,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3221 states. [2023-12-15 23:25:38,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3221 to 3219. [2023-12-15 23:25:38,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3219 states, 3218 states have (on average 1.4738968303293971) internal successors, (4743), 3218 states have internal predecessors, (4743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:38,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3219 states to 3219 states and 4743 transitions. [2023-12-15 23:25:38,831 INFO L78 Accepts]: Start accepts. Automaton has 3219 states and 4743 transitions. Word has length 145 [2023-12-15 23:25:38,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:25:38,832 INFO L495 AbstractCegarLoop]: Abstraction has 3219 states and 4743 transitions. [2023-12-15 23:25:38,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:38,833 INFO L276 IsEmpty]: Start isEmpty. Operand 3219 states and 4743 transitions. [2023-12-15 23:25:38,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-15 23:25:38,836 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:25:38,837 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:25:38,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 23:25:38,837 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:25:38,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:25:38,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1172795997, now seen corresponding path program 1 times [2023-12-15 23:25:38,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:25:38,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105571438] [2023-12-15 23:25:38,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:25:38,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:25:38,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:25:38,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:25:38,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:25:38,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105571438] [2023-12-15 23:25:38,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105571438] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:25:38,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:25:38,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:25:38,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838148591] [2023-12-15 23:25:38,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:25:38,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:25:38,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:25:38,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:25:38,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:25:38,892 INFO L87 Difference]: Start difference. First operand 3219 states and 4743 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:38,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:25:38,936 INFO L93 Difference]: Finished difference Result 9583 states and 14111 transitions. [2023-12-15 23:25:38,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:25:38,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 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 146 [2023-12-15 23:25:38,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:25:38,953 INFO L225 Difference]: With dead ends: 9583 [2023-12-15 23:25:38,953 INFO L226 Difference]: Without dead ends: 6407 [2023-12-15 23:25:38,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:25:38,958 INFO L413 NwaCegarLoop]: 856 mSDtfsCounter, 418 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:25:38,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 1289 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:25:38,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6407 states. [2023-12-15 23:25:39,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6407 to 3223. [2023-12-15 23:25:39,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3223 states, 3222 states have (on average 1.473308504034761) internal successors, (4747), 3222 states have internal predecessors, (4747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:39,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3223 states to 3223 states and 4747 transitions. [2023-12-15 23:25:39,055 INFO L78 Accepts]: Start accepts. Automaton has 3223 states and 4747 transitions. Word has length 146 [2023-12-15 23:25:39,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:25:39,055 INFO L495 AbstractCegarLoop]: Abstraction has 3223 states and 4747 transitions. [2023-12-15 23:25:39,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:39,055 INFO L276 IsEmpty]: Start isEmpty. Operand 3223 states and 4747 transitions. [2023-12-15 23:25:39,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-15 23:25:39,059 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:25:39,059 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:25:39,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 23:25:39,059 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:25:39,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:25:39,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1684206054, now seen corresponding path program 1 times [2023-12-15 23:25:39,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:25:39,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403736030] [2023-12-15 23:25:39,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:25:39,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:25:39,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:25:39,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:25:39,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:25:39,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403736030] [2023-12-15 23:25:39,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403736030] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:25:39,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:25:39,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:25:39,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83284198] [2023-12-15 23:25:39,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:25:39,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:25:39,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:25:39,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:25:39,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:25:39,122 INFO L87 Difference]: Start difference. First operand 3223 states and 4747 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:39,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:25:39,181 INFO L93 Difference]: Finished difference Result 8504 states and 12534 transitions. [2023-12-15 23:25:39,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:25:39,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 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 147 [2023-12-15 23:25:39,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:25:39,196 INFO L225 Difference]: With dead ends: 8504 [2023-12-15 23:25:39,196 INFO L226 Difference]: Without dead ends: 5588 [2023-12-15 23:25:39,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:25:39,201 INFO L413 NwaCegarLoop]: 811 mSDtfsCounter, 362 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 1214 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:25:39,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 1214 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:25:39,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5588 states. [2023-12-15 23:25:39,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5588 to 5586. [2023-12-15 23:25:39,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5586 states, 5585 states have (on average 1.4517457475380484) internal successors, (8108), 5585 states have internal predecessors, (8108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:39,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5586 states to 5586 states and 8108 transitions. [2023-12-15 23:25:39,300 INFO L78 Accepts]: Start accepts. Automaton has 5586 states and 8108 transitions. Word has length 147 [2023-12-15 23:25:39,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:25:39,300 INFO L495 AbstractCegarLoop]: Abstraction has 5586 states and 8108 transitions. [2023-12-15 23:25:39,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:39,301 INFO L276 IsEmpty]: Start isEmpty. Operand 5586 states and 8108 transitions. [2023-12-15 23:25:39,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-15 23:25:39,306 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:25:39,307 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:25:39,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 23:25:39,307 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:25:39,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:25:39,307 INFO L85 PathProgramCache]: Analyzing trace with hash 627864899, now seen corresponding path program 1 times [2023-12-15 23:25:39,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:25:39,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499012390] [2023-12-15 23:25:39,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:25:39,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:25:39,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:25:39,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:25:39,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:25:39,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499012390] [2023-12-15 23:25:39,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499012390] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:25:39,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:25:39,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:25:39,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714338073] [2023-12-15 23:25:39,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:25:39,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:25:39,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:25:39,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:25:39,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:25:39,541 INFO L87 Difference]: Start difference. First operand 5586 states and 8108 transitions. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:39,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:25:39,651 INFO L93 Difference]: Finished difference Result 16092 states and 23347 transitions. [2023-12-15 23:25:39,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:25:39,652 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 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 147 [2023-12-15 23:25:39,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:25:39,682 INFO L225 Difference]: With dead ends: 16092 [2023-12-15 23:25:39,682 INFO L226 Difference]: Without dead ends: 10542 [2023-12-15 23:25:39,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:25:39,691 INFO L413 NwaCegarLoop]: 732 mSDtfsCounter, 1278 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1278 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:25:39,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1278 Valid, 1129 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:25:39,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10542 states. [2023-12-15 23:25:39,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10542 to 10540. [2023-12-15 23:25:39,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10540 states, 10539 states have (on average 1.4364740487712306) internal successors, (15139), 10539 states have internal predecessors, (15139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:39,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10540 states to 10540 states and 15139 transitions. [2023-12-15 23:25:39,861 INFO L78 Accepts]: Start accepts. Automaton has 10540 states and 15139 transitions. Word has length 147 [2023-12-15 23:25:39,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:25:39,861 INFO L495 AbstractCegarLoop]: Abstraction has 10540 states and 15139 transitions. [2023-12-15 23:25:39,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:39,862 INFO L276 IsEmpty]: Start isEmpty. Operand 10540 states and 15139 transitions. [2023-12-15 23:25:39,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-15 23:25:39,872 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:25:39,872 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:25:39,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 23:25:39,872 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:25:39,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:25:39,873 INFO L85 PathProgramCache]: Analyzing trace with hash 759394012, now seen corresponding path program 1 times [2023-12-15 23:25:39,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:25:39,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760271717] [2023-12-15 23:25:39,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:25:39,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:25:39,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:25:40,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:25:40,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:25:40,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760271717] [2023-12-15 23:25:40,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760271717] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:25:40,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:25:40,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:25:40,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849920217] [2023-12-15 23:25:40,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:25:40,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:25:40,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:25:40,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:25:40,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:25:40,080 INFO L87 Difference]: Start difference. First operand 10540 states and 15139 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:40,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:25:40,181 INFO L93 Difference]: Finished difference Result 21314 states and 30515 transitions. [2023-12-15 23:25:40,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:25:40,181 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 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 147 [2023-12-15 23:25:40,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:25:40,198 INFO L225 Difference]: With dead ends: 21314 [2023-12-15 23:25:40,198 INFO L226 Difference]: Without dead ends: 10890 [2023-12-15 23:25:40,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:25:40,213 INFO L413 NwaCegarLoop]: 719 mSDtfsCounter, 859 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:25:40,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 1116 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:25:40,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10890 states. [2023-12-15 23:25:40,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10890 to 10748. [2023-12-15 23:25:40,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10748 states, 10747 states have (on average 1.429887410440123) internal successors, (15367), 10747 states have internal predecessors, (15367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:40,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10748 states to 10748 states and 15367 transitions. [2023-12-15 23:25:40,391 INFO L78 Accepts]: Start accepts. Automaton has 10748 states and 15367 transitions. Word has length 147 [2023-12-15 23:25:40,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:25:40,391 INFO L495 AbstractCegarLoop]: Abstraction has 10748 states and 15367 transitions. [2023-12-15 23:25:40,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:40,391 INFO L276 IsEmpty]: Start isEmpty. Operand 10748 states and 15367 transitions. [2023-12-15 23:25:40,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-15 23:25:40,402 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:25:40,402 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:25:40,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 23:25:40,402 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:25:40,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:25:40,403 INFO L85 PathProgramCache]: Analyzing trace with hash -624841788, now seen corresponding path program 1 times [2023-12-15 23:25:40,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:25:40,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436348927] [2023-12-15 23:25:40,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:25:40,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:25:40,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:25:40,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:25:40,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:25:40,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436348927] [2023-12-15 23:25:40,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436348927] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:25:40,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:25:40,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:25:40,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859873009] [2023-12-15 23:25:40,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:25:40,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:25:40,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:25:40,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:25:40,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:25:40,463 INFO L87 Difference]: Start difference. First operand 10748 states and 15367 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:40,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:25:40,602 INFO L93 Difference]: Finished difference Result 31556 states and 45225 transitions. [2023-12-15 23:25:40,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:25:40,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2023-12-15 23:25:40,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:25:40,635 INFO L225 Difference]: With dead ends: 31556 [2023-12-15 23:25:40,635 INFO L226 Difference]: Without dead ends: 21372 [2023-12-15 23:25:40,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:25:40,652 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 404 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:25:40,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 952 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:25:40,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21372 states. [2023-12-15 23:25:40,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21372 to 10764. [2023-12-15 23:25:40,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10764 states, 10763 states have (on average 1.4292483508315525) internal successors, (15383), 10763 states have internal predecessors, (15383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:40,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10764 states to 10764 states and 15383 transitions. [2023-12-15 23:25:40,914 INFO L78 Accepts]: Start accepts. Automaton has 10764 states and 15383 transitions. Word has length 148 [2023-12-15 23:25:40,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:25:40,915 INFO L495 AbstractCegarLoop]: Abstraction has 10764 states and 15383 transitions. [2023-12-15 23:25:40,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:40,915 INFO L276 IsEmpty]: Start isEmpty. Operand 10764 states and 15383 transitions. [2023-12-15 23:25:40,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-15 23:25:40,925 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:25:40,925 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:25:40,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 23:25:40,926 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:25:40,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:25:40,926 INFO L85 PathProgramCache]: Analyzing trace with hash 509435677, now seen corresponding path program 1 times [2023-12-15 23:25:40,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:25:40,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649080011] [2023-12-15 23:25:40,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:25:40,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:25:40,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:25:41,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:25:41,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:25:41,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649080011] [2023-12-15 23:25:41,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649080011] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:25:41,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:25:41,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:25:41,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238486716] [2023-12-15 23:25:41,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:25:41,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:25:41,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:25:41,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:25:41,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:25:41,184 INFO L87 Difference]: Start difference. First operand 10764 states and 15383 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:41,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:25:41,274 INFO L93 Difference]: Finished difference Result 21519 states and 30753 transitions. [2023-12-15 23:25:41,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:25:41,275 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 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 149 [2023-12-15 23:25:41,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:25:41,290 INFO L225 Difference]: With dead ends: 21519 [2023-12-15 23:25:41,291 INFO L226 Difference]: Without dead ends: 10762 [2023-12-15 23:25:41,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:25:41,304 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 65 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1358 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:25:41,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1358 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:25:41,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10762 states. [2023-12-15 23:25:41,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10762 to 10762. [2023-12-15 23:25:41,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10762 states, 10761 states have (on average 1.4291422730229533) internal successors, (15379), 10761 states have internal predecessors, (15379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:41,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10762 states to 10762 states and 15379 transitions. [2023-12-15 23:25:41,454 INFO L78 Accepts]: Start accepts. Automaton has 10762 states and 15379 transitions. Word has length 149 [2023-12-15 23:25:41,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:25:41,454 INFO L495 AbstractCegarLoop]: Abstraction has 10762 states and 15379 transitions. [2023-12-15 23:25:41,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:41,454 INFO L276 IsEmpty]: Start isEmpty. Operand 10762 states and 15379 transitions. [2023-12-15 23:25:41,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-15 23:25:41,465 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:25:41,465 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:25:41,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 23:25:41,465 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:25:41,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:25:41,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1406543613, now seen corresponding path program 1 times [2023-12-15 23:25:41,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:25:41,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238407136] [2023-12-15 23:25:41,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:25:41,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:25:41,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:25:41,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:25:41,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:25:41,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238407136] [2023-12-15 23:25:41,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238407136] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:25:41,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:25:41,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:25:41,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082508232] [2023-12-15 23:25:41,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:25:41,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:25:41,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:25:41,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:25:41,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:25:41,530 INFO L87 Difference]: Start difference. First operand 10762 states and 15379 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:41,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:25:41,641 INFO L93 Difference]: Finished difference Result 25627 states and 36742 transitions. [2023-12-15 23:25:41,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:25:41,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 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 149 [2023-12-15 23:25:41,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:25:41,713 INFO L225 Difference]: With dead ends: 25627 [2023-12-15 23:25:41,713 INFO L226 Difference]: Without dead ends: 15979 [2023-12-15 23:25:41,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:25:41,724 INFO L413 NwaCegarLoop]: 744 mSDtfsCounter, 368 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:25:41,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 1138 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:25:41,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15979 states. [2023-12-15 23:25:41,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15979 to 15977. [2023-12-15 23:25:41,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15977 states, 15976 states have (on average 1.4053580370555834) internal successors, (22452), 15976 states have internal predecessors, (22452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:41,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15977 states to 15977 states and 22452 transitions. [2023-12-15 23:25:41,946 INFO L78 Accepts]: Start accepts. Automaton has 15977 states and 22452 transitions. Word has length 149 [2023-12-15 23:25:41,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:25:41,946 INFO L495 AbstractCegarLoop]: Abstraction has 15977 states and 22452 transitions. [2023-12-15 23:25:41,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:41,946 INFO L276 IsEmpty]: Start isEmpty. Operand 15977 states and 22452 transitions. [2023-12-15 23:25:41,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-15 23:25:41,960 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:25:41,961 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:25:41,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 23:25:41,961 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:25:41,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:25:41,961 INFO L85 PathProgramCache]: Analyzing trace with hash 508524257, now seen corresponding path program 1 times [2023-12-15 23:25:41,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:25:41,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88611552] [2023-12-15 23:25:41,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:25:41,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:25:41,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:25:42,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:25:42,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:25:42,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88611552] [2023-12-15 23:25:42,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88611552] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:25:42,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:25:42,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:25:42,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463564628] [2023-12-15 23:25:42,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:25:42,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:25:42,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:25:42,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:25:42,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:25:42,034 INFO L87 Difference]: Start difference. First operand 15977 states and 22452 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:42,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:25:42,366 INFO L93 Difference]: Finished difference Result 42897 states and 61036 transitions. [2023-12-15 23:25:42,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:25:42,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 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 155 [2023-12-15 23:25:42,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:25:42,410 INFO L225 Difference]: With dead ends: 42897 [2023-12-15 23:25:42,411 INFO L226 Difference]: Without dead ends: 29627 [2023-12-15 23:25:42,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:25:42,431 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 296 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:25:42,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 758 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:25:42,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29627 states. [2023-12-15 23:25:42,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29627 to 29625. [2023-12-15 23:25:42,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29625 states, 29624 states have (on average 1.4053470159330272) internal successors, (41632), 29624 states have internal predecessors, (41632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:42,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29625 states to 29625 states and 41632 transitions. [2023-12-15 23:25:42,870 INFO L78 Accepts]: Start accepts. Automaton has 29625 states and 41632 transitions. Word has length 155 [2023-12-15 23:25:42,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:25:42,871 INFO L495 AbstractCegarLoop]: Abstraction has 29625 states and 41632 transitions. [2023-12-15 23:25:42,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:42,871 INFO L276 IsEmpty]: Start isEmpty. Operand 29625 states and 41632 transitions. [2023-12-15 23:25:42,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-15 23:25:42,900 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:25:42,900 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:25:42,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 23:25:42,900 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:25:42,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:25:42,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1330512388, now seen corresponding path program 1 times [2023-12-15 23:25:42,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:25:42,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299954159] [2023-12-15 23:25:42,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:25:42,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:25:42,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:25:43,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:25:43,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:25:43,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299954159] [2023-12-15 23:25:43,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299954159] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:25:43,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:25:43,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:25:43,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848066472] [2023-12-15 23:25:43,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:25:43,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:25:43,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:25:43,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:25:43,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:25:43,122 INFO L87 Difference]: Start difference. First operand 29625 states and 41632 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:43,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:25:43,429 INFO L93 Difference]: Finished difference Result 76766 states and 107980 transitions. [2023-12-15 23:25:43,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:25:43,430 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 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 155 [2023-12-15 23:25:43,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:25:43,502 INFO L225 Difference]: With dead ends: 76766 [2023-12-15 23:25:43,502 INFO L226 Difference]: Without dead ends: 47500 [2023-12-15 23:25:43,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:25:43,531 INFO L413 NwaCegarLoop]: 741 mSDtfsCounter, 872 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:25:43,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [872 Valid, 1130 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:25:43,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47500 states. [2023-12-15 23:25:44,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47500 to 47498. [2023-12-15 23:25:44,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47498 states, 47497 states have (on average 1.388192938501379) internal successors, (65935), 47497 states have internal predecessors, (65935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:44,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47498 states to 47498 states and 65935 transitions. [2023-12-15 23:25:44,380 INFO L78 Accepts]: Start accepts. Automaton has 47498 states and 65935 transitions. Word has length 155 [2023-12-15 23:25:44,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:25:44,380 INFO L495 AbstractCegarLoop]: Abstraction has 47498 states and 65935 transitions. [2023-12-15 23:25:44,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:44,380 INFO L276 IsEmpty]: Start isEmpty. Operand 47498 states and 65935 transitions. [2023-12-15 23:25:44,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-15 23:25:44,418 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:25:44,418 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:25:44,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 23:25:44,418 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:25:44,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:25:44,419 INFO L85 PathProgramCache]: Analyzing trace with hash 670620722, now seen corresponding path program 1 times [2023-12-15 23:25:44,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:25:44,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553862702] [2023-12-15 23:25:44,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:25:44,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:25:44,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:25:44,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:25:44,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:25:44,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553862702] [2023-12-15 23:25:44,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553862702] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:25:44,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:25:44,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:25:44,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233795860] [2023-12-15 23:25:44,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:25:44,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:25:44,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:25:44,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:25:44,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:25:44,623 INFO L87 Difference]: Start difference. First operand 47498 states and 65935 transitions. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:44,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:25:44,921 INFO L93 Difference]: Finished difference Result 75788 states and 105191 transitions. [2023-12-15 23:25:44,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:25:44,921 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 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 157 [2023-12-15 23:25:44,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:25:44,978 INFO L225 Difference]: With dead ends: 75788 [2023-12-15 23:25:44,978 INFO L226 Difference]: Without dead ends: 38774 [2023-12-15 23:25:45,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:25:45,012 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 53 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1342 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:25:45,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1342 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:25:45,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38774 states. [2023-12-15 23:25:45,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38774 to 38774. [2023-12-15 23:25:45,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38774 states, 38773 states have (on average 1.3829211048925798) internal successors, (53620), 38773 states have internal predecessors, (53620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:45,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38774 states to 38774 states and 53620 transitions. [2023-12-15 23:25:45,680 INFO L78 Accepts]: Start accepts. Automaton has 38774 states and 53620 transitions. Word has length 157 [2023-12-15 23:25:45,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:25:45,680 INFO L495 AbstractCegarLoop]: Abstraction has 38774 states and 53620 transitions. [2023-12-15 23:25:45,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:45,681 INFO L276 IsEmpty]: Start isEmpty. Operand 38774 states and 53620 transitions. [2023-12-15 23:25:45,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-15 23:25:45,701 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:25:45,702 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:25:45,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 23:25:45,702 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:25:45,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:25:45,702 INFO L85 PathProgramCache]: Analyzing trace with hash -414624056, now seen corresponding path program 1 times [2023-12-15 23:25:45,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:25:45,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615043253] [2023-12-15 23:25:45,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:25:45,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:25:45,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:25:46,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:25:46,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:25:46,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615043253] [2023-12-15 23:25:46,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615043253] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:25:46,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:25:46,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 23:25:46,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053206168] [2023-12-15 23:25:46,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:25:46,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 23:25:46,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:25:46,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 23:25:46,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-15 23:25:46,285 INFO L87 Difference]: Start difference. First operand 38774 states and 53620 transitions. Second operand has 9 states, 9 states have (on average 18.11111111111111) internal successors, (163), 9 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:46,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:25:46,612 INFO L93 Difference]: Finished difference Result 90372 states and 128848 transitions. [2023-12-15 23:25:46,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:25:46,612 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.11111111111111) internal successors, (163), 9 states have internal predecessors, (163), 0 states have call successors, (0), 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 163 [2023-12-15 23:25:46,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:25:46,718 INFO L225 Difference]: With dead ends: 90372 [2023-12-15 23:25:46,719 INFO L226 Difference]: Without dead ends: 72738 [2023-12-15 23:25:46,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-15 23:25:46,752 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 1512 mSDsluCounter, 2004 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 2406 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:25:46,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 2406 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:25:46,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72738 states. [2023-12-15 23:25:47,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72738 to 72736. [2023-12-15 23:25:47,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72736 states, 72735 states have (on average 1.3863751976352512) internal successors, (100838), 72735 states have internal predecessors, (100838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:48,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72736 states to 72736 states and 100838 transitions. [2023-12-15 23:25:48,061 INFO L78 Accepts]: Start accepts. Automaton has 72736 states and 100838 transitions. Word has length 163 [2023-12-15 23:25:48,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:25:48,061 INFO L495 AbstractCegarLoop]: Abstraction has 72736 states and 100838 transitions. [2023-12-15 23:25:48,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.11111111111111) internal successors, (163), 9 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:48,061 INFO L276 IsEmpty]: Start isEmpty. Operand 72736 states and 100838 transitions. [2023-12-15 23:25:48,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-15 23:25:48,106 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:25:48,107 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:25:48,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 23:25:48,107 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:25:48,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:25:48,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1895437224, now seen corresponding path program 1 times [2023-12-15 23:25:48,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:25:48,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111414647] [2023-12-15 23:25:48,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:25:48,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:25:48,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:25:48,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:25:48,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:25:48,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111414647] [2023-12-15 23:25:48,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111414647] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:25:48,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:25:48,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:25:48,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415280569] [2023-12-15 23:25:48,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:25:48,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:25:48,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:25:48,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:25:48,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:25:48,242 INFO L87 Difference]: Start difference. First operand 72736 states and 100838 transitions. Second operand has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:48,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:25:48,838 INFO L93 Difference]: Finished difference Result 112808 states and 163938 transitions. [2023-12-15 23:25:48,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:25:48,838 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 0 states have call successors, (0), 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 163 [2023-12-15 23:25:48,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:25:48,996 INFO L225 Difference]: With dead ends: 112808 [2023-12-15 23:25:48,997 INFO L226 Difference]: Without dead ends: 98022 [2023-12-15 23:25:49,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:25:49,040 INFO L413 NwaCegarLoop]: 787 mSDtfsCounter, 870 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 1668 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 23:25:49,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 1668 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 23:25:49,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98022 states. [2023-12-15 23:25:50,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98022 to 83296. [2023-12-15 23:25:50,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83296 states, 83295 states have (on average 1.4083678492106368) internal successors, (117310), 83295 states have internal predecessors, (117310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:50,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83296 states to 83296 states and 117310 transitions. [2023-12-15 23:25:50,628 INFO L78 Accepts]: Start accepts. Automaton has 83296 states and 117310 transitions. Word has length 163 [2023-12-15 23:25:50,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:25:50,628 INFO L495 AbstractCegarLoop]: Abstraction has 83296 states and 117310 transitions. [2023-12-15 23:25:50,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:50,628 INFO L276 IsEmpty]: Start isEmpty. Operand 83296 states and 117310 transitions. [2023-12-15 23:25:50,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-15 23:25:50,871 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:25:50,873 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:25:50,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 23:25:50,873 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:25:50,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:25:50,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1001467055, now seen corresponding path program 1 times [2023-12-15 23:25:50,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:25:50,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789733164] [2023-12-15 23:25:50,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:25:50,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:25:50,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:25:51,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:25:51,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:25:51,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789733164] [2023-12-15 23:25:51,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789733164] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:25:51,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:25:51,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:25:51,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177596960] [2023-12-15 23:25:51,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:25:51,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:25:51,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:25:51,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:25:51,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:25:51,142 INFO L87 Difference]: Start difference. First operand 83296 states and 117310 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:51,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:25:51,598 INFO L93 Difference]: Finished difference Result 117304 states and 170164 transitions. [2023-12-15 23:25:51,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:25:51,599 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 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 163 [2023-12-15 23:25:51,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:25:51,713 INFO L225 Difference]: With dead ends: 117304 [2023-12-15 23:25:51,713 INFO L226 Difference]: Without dead ends: 83298 [2023-12-15 23:25:51,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:25:51,745 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 539 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 23:25:51,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [539 Valid, 887 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 23:25:51,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83298 states. [2023-12-15 23:25:52,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83298 to 83296. [2023-12-15 23:25:53,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83296 states, 83295 states have (on average 1.4010684915060927) internal successors, (116702), 83295 states have internal predecessors, (116702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:53,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83296 states to 83296 states and 116702 transitions. [2023-12-15 23:25:53,356 INFO L78 Accepts]: Start accepts. Automaton has 83296 states and 116702 transitions. Word has length 163 [2023-12-15 23:25:53,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:25:53,356 INFO L495 AbstractCegarLoop]: Abstraction has 83296 states and 116702 transitions. [2023-12-15 23:25:53,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:53,357 INFO L276 IsEmpty]: Start isEmpty. Operand 83296 states and 116702 transitions. [2023-12-15 23:25:53,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-15 23:25:53,399 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:25:53,399 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:25:53,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 23:25:53,399 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:25:53,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:25:53,401 INFO L85 PathProgramCache]: Analyzing trace with hash -2134428153, now seen corresponding path program 1 times [2023-12-15 23:25:53,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:25:53,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911486255] [2023-12-15 23:25:53,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:25:53,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:25:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:25:53,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:25:53,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:25:53,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911486255] [2023-12-15 23:25:53,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911486255] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:25:53,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:25:53,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:25:53,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561382257] [2023-12-15 23:25:53,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:25:53,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:25:53,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:25:53,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:25:53,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:25:53,589 INFO L87 Difference]: Start difference. First operand 83296 states and 116702 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:54,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:25:54,046 INFO L93 Difference]: Finished difference Result 146757 states and 205649 transitions. [2023-12-15 23:25:54,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:25:54,047 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 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 163 [2023-12-15 23:25:54,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:25:54,133 INFO L225 Difference]: With dead ends: 146757 [2023-12-15 23:25:54,134 INFO L226 Difference]: Without dead ends: 63530 [2023-12-15 23:25:54,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:25:54,183 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 43 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:25:54,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 1326 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:25:54,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63530 states. [2023-12-15 23:25:55,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63530 to 63530. [2023-12-15 23:25:55,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63530 states, 63529 states have (on average 1.4014387130286956) internal successors, (89032), 63529 states have internal predecessors, (89032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:55,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63530 states to 63530 states and 89032 transitions. [2023-12-15 23:25:55,260 INFO L78 Accepts]: Start accepts. Automaton has 63530 states and 89032 transitions. Word has length 163 [2023-12-15 23:25:55,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:25:55,261 INFO L495 AbstractCegarLoop]: Abstraction has 63530 states and 89032 transitions. [2023-12-15 23:25:55,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:55,261 INFO L276 IsEmpty]: Start isEmpty. Operand 63530 states and 89032 transitions. [2023-12-15 23:25:55,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-15 23:25:55,295 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:25:55,295 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:25:55,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 23:25:55,295 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:25:55,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:25:55,295 INFO L85 PathProgramCache]: Analyzing trace with hash -881944432, now seen corresponding path program 1 times [2023-12-15 23:25:55,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:25:55,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775748174] [2023-12-15 23:25:55,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:25:55,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:25:55,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:25:55,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:25:55,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:25:55,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775748174] [2023-12-15 23:25:55,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775748174] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:25:55,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:25:55,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:25:55,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774534225] [2023-12-15 23:25:55,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:25:55,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:25:55,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:25:55,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:25:55,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:25:55,394 INFO L87 Difference]: Start difference. First operand 63530 states and 89032 transitions. Second operand has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:56,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:25:56,040 INFO L93 Difference]: Finished difference Result 156743 states and 234511 transitions. [2023-12-15 23:25:56,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 23:25:56,040 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2023-12-15 23:25:56,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:25:56,256 INFO L225 Difference]: With dead ends: 156743 [2023-12-15 23:25:56,256 INFO L226 Difference]: Without dead ends: 125478 [2023-12-15 23:25:56,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 23:25:56,318 INFO L413 NwaCegarLoop]: 540 mSDtfsCounter, 1290 mSDsluCounter, 1149 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1290 SdHoareTripleChecker+Valid, 1689 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:25:56,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1290 Valid, 1689 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:25:56,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125478 states. [2023-12-15 23:25:57,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125478 to 88391. [2023-12-15 23:25:57,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88391 states, 88390 states have (on average 1.4369838216992872) internal successors, (127015), 88390 states have internal predecessors, (127015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:57,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88391 states to 88391 states and 127015 transitions. [2023-12-15 23:25:57,967 INFO L78 Accepts]: Start accepts. Automaton has 88391 states and 127015 transitions. Word has length 171 [2023-12-15 23:25:57,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:25:57,971 INFO L495 AbstractCegarLoop]: Abstraction has 88391 states and 127015 transitions. [2023-12-15 23:25:57,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:57,972 INFO L276 IsEmpty]: Start isEmpty. Operand 88391 states and 127015 transitions. [2023-12-15 23:25:58,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-15 23:25:58,193 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:25:58,198 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:25:58,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-15 23:25:58,198 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:25:58,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:25:58,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1578518463, now seen corresponding path program 1 times [2023-12-15 23:25:58,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:25:58,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345686479] [2023-12-15 23:25:58,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:25:58,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:25:58,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:25:58,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:25:58,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:25:58,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345686479] [2023-12-15 23:25:58,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345686479] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:25:58,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:25:58,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:25:58,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569905730] [2023-12-15 23:25:58,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:25:58,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:25:58,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:25:58,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:25:58,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:25:58,372 INFO L87 Difference]: Start difference. First operand 88391 states and 127015 transitions. Second operand has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:58,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:25:58,834 INFO L93 Difference]: Finished difference Result 147556 states and 218768 transitions. [2023-12-15 23:25:58,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:25:58,835 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2023-12-15 23:25:58,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:25:59,265 INFO L225 Difference]: With dead ends: 147556 [2023-12-15 23:25:59,266 INFO L226 Difference]: Without dead ends: 125012 [2023-12-15 23:25:59,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:25:59,300 INFO L413 NwaCegarLoop]: 786 mSDtfsCounter, 788 mSDsluCounter, 1189 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 1975 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:25:59,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 1975 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:25:59,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125012 states. [2023-12-15 23:26:00,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125012 to 96860. [2023-12-15 23:26:00,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96860 states, 96859 states have (on average 1.4465356858939282) internal successors, (140110), 96859 states have internal predecessors, (140110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:26:00,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96860 states to 96860 states and 140110 transitions. [2023-12-15 23:26:00,952 INFO L78 Accepts]: Start accepts. Automaton has 96860 states and 140110 transitions. Word has length 171 [2023-12-15 23:26:00,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:26:00,967 INFO L495 AbstractCegarLoop]: Abstraction has 96860 states and 140110 transitions. [2023-12-15 23:26:00,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:26:00,967 INFO L276 IsEmpty]: Start isEmpty. Operand 96860 states and 140110 transitions. [2023-12-15 23:26:01,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-15 23:26:01,000 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:26:01,000 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:26:01,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-15 23:26:01,001 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:26:01,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:26:01,001 INFO L85 PathProgramCache]: Analyzing trace with hash -662970143, now seen corresponding path program 1 times [2023-12-15 23:26:01,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:26:01,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169433831] [2023-12-15 23:26:01,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:26:01,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:26:01,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:26:01,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:26:01,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:26:01,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169433831] [2023-12-15 23:26:01,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169433831] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:26:01,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:26:01,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 23:26:01,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122886893] [2023-12-15 23:26:01,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:26:01,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 23:26:01,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:26:01,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 23:26:01,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-15 23:26:01,240 INFO L87 Difference]: Start difference. First operand 96860 states and 140110 transitions. Second operand has 8 states, 8 states have (on average 21.375) internal successors, (171), 8 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:26:01,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:26:01,942 INFO L93 Difference]: Finished difference Result 157618 states and 233260 transitions. [2023-12-15 23:26:01,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:26:01,943 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.375) internal successors, (171), 8 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2023-12-15 23:26:01,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:26:02,116 INFO L225 Difference]: With dead ends: 157618 [2023-12-15 23:26:02,117 INFO L226 Difference]: Without dead ends: 96862 [2023-12-15 23:26:02,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-15 23:26:02,160 INFO L413 NwaCegarLoop]: 572 mSDtfsCounter, 1800 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1800 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:26:02,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1800 Valid, 1146 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:26:02,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96862 states. [2023-12-15 23:26:03,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96862 to 91214. [2023-12-15 23:26:03,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91214 states, 91213 states have (on average 1.4339184107528533) internal successors, (130792), 91213 states have internal predecessors, (130792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:26:03,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91214 states to 91214 states and 130792 transitions. [2023-12-15 23:26:03,487 INFO L78 Accepts]: Start accepts. Automaton has 91214 states and 130792 transitions. Word has length 171 [2023-12-15 23:26:03,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:26:03,487 INFO L495 AbstractCegarLoop]: Abstraction has 91214 states and 130792 transitions. [2023-12-15 23:26:03,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.375) internal successors, (171), 8 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:26:03,487 INFO L276 IsEmpty]: Start isEmpty. Operand 91214 states and 130792 transitions. [2023-12-15 23:26:03,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-15 23:26:03,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:26:03,517 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:26:03,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-15 23:26:03,518 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:26:03,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:26:03,518 INFO L85 PathProgramCache]: Analyzing trace with hash 193391725, now seen corresponding path program 1 times [2023-12-15 23:26:03,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:26:03,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145260622] [2023-12-15 23:26:03,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:26:03,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:26:03,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:26:03,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:26:03,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:26:03,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145260622] [2023-12-15 23:26:03,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145260622] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:26:04,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:26:04,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 23:26:04,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744900562] [2023-12-15 23:26:04,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:26:04,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 23:26:04,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:26:04,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 23:26:04,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-15 23:26:04,002 INFO L87 Difference]: Start difference. First operand 91214 states and 130792 transitions. Second operand has 10 states, 10 states have (on average 17.1) internal successors, (171), 9 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:26:04,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:26:04,723 INFO L93 Difference]: Finished difference Result 181346 states and 260317 transitions. [2023-12-15 23:26:04,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:26:04,723 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.1) internal successors, (171), 9 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2023-12-15 23:26:04,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:26:04,844 INFO L225 Difference]: With dead ends: 181346 [2023-12-15 23:26:04,844 INFO L226 Difference]: Without dead ends: 91214 [2023-12-15 23:26:04,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-12-15 23:26:04,887 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 2580 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2580 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:26:04,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2580 Valid, 501 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:26:04,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91214 states. [2023-12-15 23:26:05,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91214 to 91214. [2023-12-15 23:26:06,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91214 states, 91213 states have (on average 1.413636214136143) internal successors, (128942), 91213 states have internal predecessors, (128942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:26:06,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91214 states to 91214 states and 128942 transitions. [2023-12-15 23:26:06,138 INFO L78 Accepts]: Start accepts. Automaton has 91214 states and 128942 transitions. Word has length 171 [2023-12-15 23:26:06,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:26:06,138 INFO L495 AbstractCegarLoop]: Abstraction has 91214 states and 128942 transitions. [2023-12-15 23:26:06,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.1) internal successors, (171), 9 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:26:06,138 INFO L276 IsEmpty]: Start isEmpty. Operand 91214 states and 128942 transitions. [2023-12-15 23:26:06,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-15 23:26:06,168 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:26:06,168 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:26:06,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-15 23:26:06,168 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:26:06,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:26:06,169 INFO L85 PathProgramCache]: Analyzing trace with hash -2023485038, now seen corresponding path program 1 times [2023-12-15 23:26:06,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:26:06,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138598727] [2023-12-15 23:26:06,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:26:06,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:26:06,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:26:06,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:26:06,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:26:06,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138598727] [2023-12-15 23:26:06,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138598727] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:26:06,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:26:06,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:26:06,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064274385] [2023-12-15 23:26:06,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:26:06,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:26:06,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:26:06,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:26:06,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:26:06,327 INFO L87 Difference]: Start difference. First operand 91214 states and 128942 transitions. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:26:06,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:26:06,982 INFO L93 Difference]: Finished difference Result 160906 states and 227258 transitions. [2023-12-15 23:26:06,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:26:06,983 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2023-12-15 23:26:06,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:26:07,101 INFO L225 Difference]: With dead ends: 160906 [2023-12-15 23:26:07,101 INFO L226 Difference]: Without dead ends: 91204 [2023-12-15 23:26:07,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:26:07,166 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 23 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:26:07,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 1290 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:26:07,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91204 states. [2023-12-15 23:26:08,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91204 to 91204. [2023-12-15 23:26:08,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91204 states, 91203 states have (on average 1.413626744734274) internal successors, (128927), 91203 states have internal predecessors, (128927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:26:08,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91204 states to 91204 states and 128927 transitions. [2023-12-15 23:26:08,739 INFO L78 Accepts]: Start accepts. Automaton has 91204 states and 128927 transitions. Word has length 171 [2023-12-15 23:26:08,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:26:08,740 INFO L495 AbstractCegarLoop]: Abstraction has 91204 states and 128927 transitions. [2023-12-15 23:26:08,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:26:08,740 INFO L276 IsEmpty]: Start isEmpty. Operand 91204 states and 128927 transitions. [2023-12-15 23:26:08,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-15 23:26:08,798 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:26:08,805 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:26:08,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-15 23:26:08,805 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:26:08,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:26:08,806 INFO L85 PathProgramCache]: Analyzing trace with hash 2118153408, now seen corresponding path program 1 times [2023-12-15 23:26:08,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:26:08,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949264257] [2023-12-15 23:26:08,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:26:08,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:26:08,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:26:09,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:26:09,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:26:09,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949264257] [2023-12-15 23:26:09,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949264257] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:26:09,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:26:09,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:26:09,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699552024] [2023-12-15 23:26:09,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:26:09,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:26:09,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:26:09,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:26:09,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:26:09,015 INFO L87 Difference]: Start difference. First operand 91204 states and 128927 transitions. Second operand has 5 states, 5 states have (on average 34.2) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:26:09,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:26:09,453 INFO L93 Difference]: Finished difference Result 170376 states and 240683 transitions. [2023-12-15 23:26:09,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:26:09,454 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2023-12-15 23:26:09,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:26:09,794 INFO L225 Difference]: With dead ends: 170376 [2023-12-15 23:26:09,794 INFO L226 Difference]: Without dead ends: 79490 [2023-12-15 23:26:09,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:26:09,828 INFO L413 NwaCegarLoop]: 676 mSDtfsCounter, 769 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:26:09,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 1416 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:26:09,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79490 states. [2023-12-15 23:26:10,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79490 to 79233. [2023-12-15 23:26:10,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79233 states, 79232 states have (on average 1.4110712843295639) internal successors, (111802), 79232 states have internal predecessors, (111802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:26:10,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79233 states to 79233 states and 111802 transitions. [2023-12-15 23:26:10,981 INFO L78 Accepts]: Start accepts. Automaton has 79233 states and 111802 transitions. Word has length 171 [2023-12-15 23:26:10,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:26:10,981 INFO L495 AbstractCegarLoop]: Abstraction has 79233 states and 111802 transitions. [2023-12-15 23:26:10,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:26:10,981 INFO L276 IsEmpty]: Start isEmpty. Operand 79233 states and 111802 transitions. [2023-12-15 23:26:11,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-15 23:26:11,010 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:26:11,010 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:26:11,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-15 23:26:11,010 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:26:11,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:26:11,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1795938641, now seen corresponding path program 1 times [2023-12-15 23:26:11,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:26:11,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454992175] [2023-12-15 23:26:11,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:26:11,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:26:11,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:26:11,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:26:11,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:26:11,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454992175] [2023-12-15 23:26:11,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454992175] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:26:11,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:26:11,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:26:11,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594077055] [2023-12-15 23:26:11,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:26:11,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:26:11,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:26:11,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:26:11,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:26:11,104 INFO L87 Difference]: Start difference. First operand 79233 states and 111802 transitions. Second operand has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:26:11,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:26:11,481 INFO L93 Difference]: Finished difference Result 123161 states and 178154 transitions. [2023-12-15 23:26:11,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:26:11,482 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 0 states have call successors, (0), 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 173 [2023-12-15 23:26:11,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:26:11,654 INFO L225 Difference]: With dead ends: 123161 [2023-12-15 23:26:11,654 INFO L226 Difference]: Without dead ends: 113375 [2023-12-15 23:26:11,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:26:11,700 INFO L413 NwaCegarLoop]: 679 mSDtfsCounter, 774 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 1440 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:26:11,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 1440 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:26:12,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113375 states. [2023-12-15 23:26:13,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113375 to 84089. [2023-12-15 23:26:13,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84089 states, 84088 states have (on average 1.4159689848729902) internal successors, (119066), 84088 states have internal predecessors, (119066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:26:13,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84089 states to 84089 states and 119066 transitions. [2023-12-15 23:26:13,166 INFO L78 Accepts]: Start accepts. Automaton has 84089 states and 119066 transitions. Word has length 173 [2023-12-15 23:26:13,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:26:13,167 INFO L495 AbstractCegarLoop]: Abstraction has 84089 states and 119066 transitions. [2023-12-15 23:26:13,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:26:13,167 INFO L276 IsEmpty]: Start isEmpty. Operand 84089 states and 119066 transitions. [2023-12-15 23:26:13,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-15 23:26:13,194 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:26:13,194 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:26:13,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-15 23:26:13,194 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:26:13,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:26:13,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1087243161, now seen corresponding path program 1 times [2023-12-15 23:26:13,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:26:13,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820068260] [2023-12-15 23:26:13,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:26:13,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:26:13,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:26:13,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:26:13,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:26:13,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820068260] [2023-12-15 23:26:13,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820068260] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:26:13,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:26:13,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:26:13,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370891812] [2023-12-15 23:26:13,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:26:13,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:26:13,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:26:13,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:26:13,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:26:13,245 INFO L87 Difference]: Start difference. First operand 84089 states and 119066 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:26:14,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:26:14,064 INFO L93 Difference]: Finished difference Result 233324 states and 333587 transitions. [2023-12-15 23:26:14,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:26:14,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 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 173 [2023-12-15 23:26:14,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:26:14,303 INFO L225 Difference]: With dead ends: 233324 [2023-12-15 23:26:14,303 INFO L226 Difference]: Without dead ends: 160055 [2023-12-15 23:26:14,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:26:14,342 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 233 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:26:14,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 807 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:26:14,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160055 states. [2023-12-15 23:26:16,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160055 to 160053. [2023-12-15 23:26:16,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160053 states, 160052 states have (on average 1.4109789318471497) internal successors, (225830), 160052 states have internal predecessors, (225830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:26:16,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160053 states to 160053 states and 225830 transitions. [2023-12-15 23:26:16,942 INFO L78 Accepts]: Start accepts. Automaton has 160053 states and 225830 transitions. Word has length 173 [2023-12-15 23:26:16,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:26:16,942 INFO L495 AbstractCegarLoop]: Abstraction has 160053 states and 225830 transitions. [2023-12-15 23:26:16,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:26:16,943 INFO L276 IsEmpty]: Start isEmpty. Operand 160053 states and 225830 transitions. [2023-12-15 23:26:16,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-15 23:26:16,988 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:26:16,988 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:26:16,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-15 23:26:16,988 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:26:16,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:26:16,989 INFO L85 PathProgramCache]: Analyzing trace with hash -860889332, now seen corresponding path program 1 times [2023-12-15 23:26:16,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:26:16,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863801055] [2023-12-15 23:26:16,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:26:16,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:26:17,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:26:17,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:26:17,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:26:17,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863801055] [2023-12-15 23:26:17,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863801055] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:26:17,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:26:17,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:26:17,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640970316] [2023-12-15 23:26:17,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:26:17,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:26:17,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:26:17,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:26:17,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:26:17,078 INFO L87 Difference]: Start difference. First operand 160053 states and 225830 transitions. Second operand has 5 states, 5 states have (on average 34.6) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:26:17,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:26:17,959 INFO L93 Difference]: Finished difference Result 204093 states and 288497 transitions. [2023-12-15 23:26:17,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:26:17,959 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 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 173 [2023-12-15 23:26:17,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:26:18,091 INFO L225 Difference]: With dead ends: 204093 [2023-12-15 23:26:18,092 INFO L226 Difference]: Without dead ends: 84089 [2023-12-15 23:26:18,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:26:18,147 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 1097 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1097 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:26:18,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1097 Valid, 396 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:26:18,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84089 states. [2023-12-15 23:26:19,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84089 to 84089. [2023-12-15 23:26:19,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84089 states, 84088 states have (on average 1.3961801921796213) internal successors, (117402), 84088 states have internal predecessors, (117402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:26:19,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84089 states to 84089 states and 117402 transitions. [2023-12-15 23:26:19,407 INFO L78 Accepts]: Start accepts. Automaton has 84089 states and 117402 transitions. Word has length 173 [2023-12-15 23:26:19,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:26:19,407 INFO L495 AbstractCegarLoop]: Abstraction has 84089 states and 117402 transitions. [2023-12-15 23:26:19,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:26:19,407 INFO L276 IsEmpty]: Start isEmpty. Operand 84089 states and 117402 transitions. [2023-12-15 23:26:19,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-15 23:26:19,436 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:26:19,436 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:26:19,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-15 23:26:19,436 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:26:19,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:26:19,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1642196596, now seen corresponding path program 1 times [2023-12-15 23:26:19,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:26:19,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013200632] [2023-12-15 23:26:19,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:26:19,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:26:19,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:26:19,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:26:19,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:26:19,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013200632] [2023-12-15 23:26:19,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013200632] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:26:19,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:26:19,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 23:26:19,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153264179] [2023-12-15 23:26:19,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:26:19,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 23:26:19,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:26:19,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 23:26:19,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-15 23:26:19,897 INFO L87 Difference]: Start difference. First operand 84089 states and 117402 transitions. Second operand has 10 states, 10 states have (on average 17.3) internal successors, (173), 9 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:26:20,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:26:20,322 INFO L93 Difference]: Finished difference Result 142542 states and 200773 transitions. [2023-12-15 23:26:20,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:26:20,322 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.3) internal successors, (173), 9 states have internal predecessors, (173), 0 states have call successors, (0), 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 173 [2023-12-15 23:26:20,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:26:20,404 INFO L225 Difference]: With dead ends: 142542 [2023-12-15 23:26:20,404 INFO L226 Difference]: Without dead ends: 60522 [2023-12-15 23:26:20,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-12-15 23:26:20,459 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 2146 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2146 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:26:20,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2146 Valid, 482 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:26:20,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60522 states. [2023-12-15 23:26:21,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60522 to 43631. [2023-12-15 23:26:21,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43631 states, 43630 states have (on average 1.3840935136374055) internal successors, (60388), 43630 states have internal predecessors, (60388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:26:21,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43631 states to 43631 states and 60388 transitions. [2023-12-15 23:26:21,419 INFO L78 Accepts]: Start accepts. Automaton has 43631 states and 60388 transitions. Word has length 173 [2023-12-15 23:26:21,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:26:21,419 INFO L495 AbstractCegarLoop]: Abstraction has 43631 states and 60388 transitions. [2023-12-15 23:26:21,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.3) internal successors, (173), 9 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:26:21,419 INFO L276 IsEmpty]: Start isEmpty. Operand 43631 states and 60388 transitions. [2023-12-15 23:26:21,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-15 23:26:21,432 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:26:21,432 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:26:21,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-15 23:26:21,433 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:26:21,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:26:21,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1749110183, now seen corresponding path program 1 times [2023-12-15 23:26:21,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:26:21,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980343498] [2023-12-15 23:26:21,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:26:21,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:26:21,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:26:23,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:26:23,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:26:23,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980343498] [2023-12-15 23:26:23,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980343498] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:26:23,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:26:23,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-12-15 23:26:23,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768348456] [2023-12-15 23:26:23,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:26:23,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-15 23:26:23,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:26:23,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-15 23:26:23,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2023-12-15 23:26:23,026 INFO L87 Difference]: Start difference. First operand 43631 states and 60388 transitions. Second operand has 22 states, 22 states have (on average 7.863636363636363) internal successors, (173), 21 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-15 23:26:25,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-15 23:26:25,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=441, Invalid=1451, Unknown=0, NotChecked=0, Total=1892 [2023-12-15 23:26:25,619 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 2004 mSDsluCounter, 4627 mSDsCounter, 0 mSdLazyCounter, 1391 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2004 SdHoareTripleChecker+Valid, 4980 SdHoareTripleChecker+Invalid, 1435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 23:26:25,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2004 Valid, 4980 Invalid, 1435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1391 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 23:26:25,621 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 23:26:25,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-15 23:26:25,621 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (43631states) and FLOYD_HOARE automaton (currently 29 states, 22 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-27-2-3-2-3-1 term,while PolyPacSimplificationTermWalker was simplifying a ∨-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-21-2-2-1 context. [2023-12-15 23:26:25,625 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] [2023-12-15 23:26:25,627 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 23:26:25,630 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 11:26:25 BoogieIcfgContainer [2023-12-15 23:26:25,630 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 23:26:25,630 INFO L158 Benchmark]: Toolchain (without parser) took 50565.93ms. Allocated memory was 278.9MB in the beginning and 7.9GB in the end (delta: 7.6GB). Free memory was 230.9MB in the beginning and 6.6GB in the end (delta: -6.4GB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. [2023-12-15 23:26:25,632 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 208.7MB. Free memory is still 156.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 23:26:25,632 INFO L158 Benchmark]: CACSL2BoogieTranslator took 456.23ms. Allocated memory is still 278.9MB. Free memory was 230.6MB in the beginning and 199.8MB in the end (delta: 30.8MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. [2023-12-15 23:26:25,632 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.46ms. Allocated memory is still 278.9MB. Free memory was 199.5MB in the beginning and 194.0MB in the end (delta: 5.5MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-15 23:26:25,634 INFO L158 Benchmark]: Boogie Preprocessor took 118.47ms. Allocated memory is still 278.9MB. Free memory was 194.0MB in the beginning and 188.0MB in the end (delta: 6.0MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-15 23:26:25,634 INFO L158 Benchmark]: RCFGBuilder took 1048.43ms. Allocated memory is still 278.9MB. Free memory was 188.0MB in the beginning and 161.0MB in the end (delta: 27.0MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. [2023-12-15 23:26:25,634 INFO L158 Benchmark]: TraceAbstraction took 48880.05ms. Allocated memory was 278.9MB in the beginning and 7.9GB in the end (delta: 7.6GB). Free memory was 159.9MB in the beginning and 6.6GB in the end (delta: -6.5GB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB. [2023-12-15 23:26:25,635 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 208.7MB. Free memory is still 156.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 456.23ms. Allocated memory is still 278.9MB. Free memory was 230.6MB in the beginning and 199.8MB in the end (delta: 30.8MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 57.46ms. Allocated memory is still 278.9MB. Free memory was 199.5MB in the beginning and 194.0MB in the end (delta: 5.5MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 118.47ms. Allocated memory is still 278.9MB. Free memory was 194.0MB in the beginning and 188.0MB in the end (delta: 6.0MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * RCFGBuilder took 1048.43ms. Allocated memory is still 278.9MB. Free memory was 188.0MB in the beginning and 161.0MB in the end (delta: 27.0MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. * TraceAbstraction took 48880.05ms. Allocated memory was 278.9MB in the beginning and 7.9GB in the end (delta: 7.6GB). Free memory was 159.9MB in the beginning and 6.6GB in the end (delta: -6.5GB). Peak memory consumption was 1.5GB. 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: 836]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 836). Cancelled while NwaCegarLoop was constructing difference of abstraction (43631states) and FLOYD_HOARE automaton (currently 29 states, 22 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-27-2-3-2-3-1 term,while PolyPacSimplificationTermWalker was simplifying a ∨-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-21-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 303 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 48.8s, OverallIterations: 30, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 1.1s, AutomataDifference: 16.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 24265 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 24265 mSDsluCounter, 38670 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21664 mSDsCounter, 384 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3521 IncrementalHoareTripleChecker+Invalid, 3905 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 384 mSolverCounterUnsat, 17006 mSDtfsCounter, 3521 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 203 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=160053occurred in iteration=27, InterpolantAutomatonStates: 116, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 23.8s AutomataMinimizationTime, 29 MinimizatonAttempts, 147661 StatesRemovedByMinimization, 23 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 6.1s InterpolantComputationTime, 4761 NumberOfCodeBlocks, 4761 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 4731 ConstructedInterpolants, 0 QuantifiedInterpolants, 18880 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 30 InterpolantComputations, 30 PerfectInterpolantSequences, 0/0 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 [2023-12-15 23:26:25,650 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown