/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/pals_opt-floodmax.5.4.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 01:33:02,744 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 01:33:02,817 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 01:33:02,821 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 01:33:02,821 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 01:33:02,843 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 01:33:02,844 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 01:33:02,844 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 01:33:02,844 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 01:33:02,847 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 01:33:02,847 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 01:33:02,848 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 01:33:02,848 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 01:33:02,849 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 01:33:02,849 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 01:33:02,850 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 01:33:02,850 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 01:33:02,850 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 01:33:02,850 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 01:33:02,850 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 01:33:02,850 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 01:33:02,851 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 01:33:02,851 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 01:33:02,851 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 01:33:02,851 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 01:33:02,851 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 01:33:02,851 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 01:33:02,851 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 01:33:02,852 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 01:33:02,852 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 01:33:02,853 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 01:33:02,853 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 01:33:02,853 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 01:33:02,853 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 01:33:02,853 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 01:33:02,853 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 01:33:02,853 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 01:33:02,854 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 01:33:02,854 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 01:33:02,854 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 01:33:02,854 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 01:33:02,854 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 01:33:02,854 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 01:33:02,854 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 01:33:03,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 01:33:03,088 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 01:33:03,091 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 01:33:03,092 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 01:33:03,093 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 01:33:03,094 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.4.ufo.UNBOUNDED.pals.c [2023-12-20 01:33:04,231 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 01:33:04,470 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 01:33:04,470 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.4.ufo.UNBOUNDED.pals.c [2023-12-20 01:33:04,484 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc69b44f2/69b1a56a8b3f444f9e9b89734453b65f/FLAG4f41a449f [2023-12-20 01:33:04,496 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc69b44f2/69b1a56a8b3f444f9e9b89734453b65f [2023-12-20 01:33:04,497 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 01:33:04,498 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 01:33:04,499 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 01:33:04,499 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 01:33:04,503 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 01:33:04,503 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:33:04" (1/1) ... [2023-12-20 01:33:04,504 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7641abb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:33:04, skipping insertion in model container [2023-12-20 01:33:04,504 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:33:04" (1/1) ... [2023-12-20 01:33:04,542 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 01:33:04,855 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/pals_opt-floodmax.5.4.ufo.UNBOUNDED.pals.c[65679,65692] [2023-12-20 01:33:04,858 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 01:33:04,876 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 01:33:04,984 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/pals_opt-floodmax.5.4.ufo.UNBOUNDED.pals.c[65679,65692] [2023-12-20 01:33:04,984 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 01:33:04,996 INFO L206 MainTranslator]: Completed translation [2023-12-20 01:33:04,997 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:33:04 WrapperNode [2023-12-20 01:33:04,997 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 01:33:04,998 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 01:33:04,998 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 01:33:04,998 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 01:33:05,003 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:33:04" (1/1) ... [2023-12-20 01:33:05,020 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:33:04" (1/1) ... [2023-12-20 01:33:05,111 INFO L138 Inliner]: procedures = 25, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 2112 [2023-12-20 01:33:05,112 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 01:33:05,113 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 01:33:05,113 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 01:33:05,113 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 01:33:05,121 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:33:04" (1/1) ... [2023-12-20 01:33:05,121 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:33:04" (1/1) ... [2023-12-20 01:33:05,133 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:33:04" (1/1) ... [2023-12-20 01:33:05,159 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 01:33:05,159 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:33:04" (1/1) ... [2023-12-20 01:33:05,160 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:33:04" (1/1) ... [2023-12-20 01:33:05,182 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:33:04" (1/1) ... [2023-12-20 01:33:05,207 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:33:04" (1/1) ... [2023-12-20 01:33:05,213 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:33:04" (1/1) ... [2023-12-20 01:33:05,219 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:33:04" (1/1) ... [2023-12-20 01:33:05,229 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 01:33:05,230 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 01:33:05,230 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 01:33:05,230 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 01:33:05,231 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:33:04" (1/1) ... [2023-12-20 01:33:05,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 01:33:05,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:33:05,272 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 01:33:05,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 01:33:05,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 01:33:05,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 01:33:05,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 01:33:05,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 01:33:05,451 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 01:33:05,453 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 01:33:06,632 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 01:33:06,696 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 01:33:06,696 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 01:33:06,697 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:33:06 BoogieIcfgContainer [2023-12-20 01:33:06,697 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 01:33:06,699 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 01:33:06,699 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 01:33:06,701 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 01:33:06,701 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 01:33:04" (1/3) ... [2023-12-20 01:33:06,702 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14e062b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:33:06, skipping insertion in model container [2023-12-20 01:33:06,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:33:04" (2/3) ... [2023-12-20 01:33:06,702 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14e062b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:33:06, skipping insertion in model container [2023-12-20 01:33:06,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:33:06" (3/3) ... [2023-12-20 01:33:06,704 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.4.ufo.UNBOUNDED.pals.c [2023-12-20 01:33:06,717 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 01:33:06,717 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 01:33:06,779 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 01:33:06,784 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;@5d925a6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 01:33:06,784 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 01:33:06,790 INFO L276 IsEmpty]: Start isEmpty. Operand has 701 states, 699 states have (on average 1.871244635193133) internal successors, (1308), 700 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:06,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-20 01:33:06,809 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:33:06,810 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] [2023-12-20 01:33:06,810 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:33:06,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:33:06,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1908807139, now seen corresponding path program 1 times [2023-12-20 01:33:06,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:33:06,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652321706] [2023-12-20 01:33:06,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:33:06,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:33:07,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:33:07,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:33:07,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:33:07,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652321706] [2023-12-20 01:33:07,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652321706] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:33:07,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:33:07,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 01:33:07,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568338035] [2023-12-20 01:33:07,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:33:07,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 01:33:07,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:33:07,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 01:33:07,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 01:33:07,253 INFO L87 Difference]: Start difference. First operand has 701 states, 699 states have (on average 1.871244635193133) internal successors, (1308), 700 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:07,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:33:07,327 INFO L93 Difference]: Finished difference Result 852 states and 1581 transitions. [2023-12-20 01:33:07,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 01:33:07,329 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2023-12-20 01:33:07,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:33:07,341 INFO L225 Difference]: With dead ends: 852 [2023-12-20 01:33:07,341 INFO L226 Difference]: Without dead ends: 699 [2023-12-20 01:33:07,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 01:33:07,346 INFO L413 NwaCegarLoop]: 1300 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:33:07,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1300 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:33:07,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2023-12-20 01:33:07,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 699. [2023-12-20 01:33:07,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 698 states have (on average 1.8667621776504297) internal successors, (1303), 698 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:07,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1303 transitions. [2023-12-20 01:33:07,402 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1303 transitions. Word has length 150 [2023-12-20 01:33:07,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:33:07,403 INFO L495 AbstractCegarLoop]: Abstraction has 699 states and 1303 transitions. [2023-12-20 01:33:07,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:07,403 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1303 transitions. [2023-12-20 01:33:07,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-20 01:33:07,405 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:33:07,406 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] [2023-12-20 01:33:07,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 01:33:07,406 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:33:07,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:33:07,407 INFO L85 PathProgramCache]: Analyzing trace with hash 14420895, now seen corresponding path program 1 times [2023-12-20 01:33:07,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:33:07,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252161043] [2023-12-20 01:33:07,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:33:07,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:33:07,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:33:07,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:33:07,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:33:07,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252161043] [2023-12-20 01:33:07,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252161043] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:33:07,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:33:07,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:33:07,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380693179] [2023-12-20 01:33:07,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:33:07,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:33:07,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:33:07,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:33:07,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:33:07,795 INFO L87 Difference]: Start difference. First operand 699 states and 1303 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:07,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:33:07,901 INFO L93 Difference]: Finished difference Result 852 states and 1575 transitions. [2023-12-20 01:33:07,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:33:07,902 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2023-12-20 01:33:07,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:33:07,909 INFO L225 Difference]: With dead ends: 852 [2023-12-20 01:33:07,909 INFO L226 Difference]: Without dead ends: 699 [2023-12-20 01:33:07,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:33:07,914 INFO L413 NwaCegarLoop]: 1300 mSDtfsCounter, 0 mSDsluCounter, 2532 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3832 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:33:07,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3832 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:33:07,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2023-12-20 01:33:07,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 699. [2023-12-20 01:33:07,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 698 states have (on average 1.7736389684813754) internal successors, (1238), 698 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:07,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1238 transitions. [2023-12-20 01:33:07,946 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1238 transitions. Word has length 150 [2023-12-20 01:33:07,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:33:07,947 INFO L495 AbstractCegarLoop]: Abstraction has 699 states and 1238 transitions. [2023-12-20 01:33:07,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:07,948 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1238 transitions. [2023-12-20 01:33:07,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-12-20 01:33:07,950 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:33:07,951 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:33:07,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 01:33:07,952 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:33:07,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:33:07,953 INFO L85 PathProgramCache]: Analyzing trace with hash 705995133, now seen corresponding path program 1 times [2023-12-20 01:33:07,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:33:07,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997868877] [2023-12-20 01:33:07,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:33:07,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:33:08,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:33:08,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:33:08,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:33:08,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997868877] [2023-12-20 01:33:08,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997868877] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:33:08,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:33:08,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:33:08,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514147202] [2023-12-20 01:33:08,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:33:08,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:33:08,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:33:08,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:33:08,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:33:08,180 INFO L87 Difference]: Start difference. First operand 699 states and 1238 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:08,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:33:08,244 INFO L93 Difference]: Finished difference Result 985 states and 1750 transitions. [2023-12-20 01:33:08,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:33:08,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 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 214 [2023-12-20 01:33:08,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:33:08,248 INFO L225 Difference]: With dead ends: 985 [2023-12-20 01:33:08,248 INFO L226 Difference]: Without dead ends: 835 [2023-12-20 01:33:08,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:33:08,249 INFO L413 NwaCegarLoop]: 1228 mSDtfsCounter, 234 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 2396 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:33:08,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 2396 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:33:08,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2023-12-20 01:33:08,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 832. [2023-12-20 01:33:08,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 831 states have (on average 1.772563176895307) internal successors, (1473), 831 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:08,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1473 transitions. [2023-12-20 01:33:08,267 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1473 transitions. Word has length 214 [2023-12-20 01:33:08,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:33:08,271 INFO L495 AbstractCegarLoop]: Abstraction has 832 states and 1473 transitions. [2023-12-20 01:33:08,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:08,274 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1473 transitions. [2023-12-20 01:33:08,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-12-20 01:33:08,277 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:33:08,277 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:33:08,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 01:33:08,277 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:33:08,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:33:08,278 INFO L85 PathProgramCache]: Analyzing trace with hash 559205667, now seen corresponding path program 1 times [2023-12-20 01:33:08,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:33:08,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285834269] [2023-12-20 01:33:08,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:33:08,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:33:08,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:33:08,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:33:08,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:33:08,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285834269] [2023-12-20 01:33:08,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285834269] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:33:08,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:33:08,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:33:08,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617569519] [2023-12-20 01:33:08,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:33:08,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:33:08,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:33:08,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:33:08,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:33:08,452 INFO L87 Difference]: Start difference. First operand 832 states and 1473 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:08,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:33:08,486 INFO L93 Difference]: Finished difference Result 1374 states and 2437 transitions. [2023-12-20 01:33:08,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:33:08,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 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 218 [2023-12-20 01:33:08,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:33:08,491 INFO L225 Difference]: With dead ends: 1374 [2023-12-20 01:33:08,492 INFO L226 Difference]: Without dead ends: 1091 [2023-12-20 01:33:08,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:33:08,501 INFO L413 NwaCegarLoop]: 1232 mSDtfsCounter, 234 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 2409 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:33:08,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 2409 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:33:08,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2023-12-20 01:33:08,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 1087. [2023-12-20 01:33:08,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 1.7734806629834254) internal successors, (1926), 1086 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:08,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 1926 transitions. [2023-12-20 01:33:08,552 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 1926 transitions. Word has length 218 [2023-12-20 01:33:08,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:33:08,553 INFO L495 AbstractCegarLoop]: Abstraction has 1087 states and 1926 transitions. [2023-12-20 01:33:08,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:08,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 1926 transitions. [2023-12-20 01:33:08,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-12-20 01:33:08,555 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:33:08,555 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:33:08,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 01:33:08,556 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:33:08,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:33:08,556 INFO L85 PathProgramCache]: Analyzing trace with hash -994955831, now seen corresponding path program 1 times [2023-12-20 01:33:08,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:33:08,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204330597] [2023-12-20 01:33:08,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:33:08,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:33:08,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:33:08,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:33:08,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:33:08,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204330597] [2023-12-20 01:33:08,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204330597] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:33:08,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:33:08,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:33:08,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227733325] [2023-12-20 01:33:08,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:33:08,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:33:08,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:33:08,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:33:08,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:33:08,709 INFO L87 Difference]: Start difference. First operand 1087 states and 1926 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:08,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:33:08,749 INFO L93 Difference]: Finished difference Result 2115 states and 3752 transitions. [2023-12-20 01:33:08,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:33:08,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 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 222 [2023-12-20 01:33:08,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:33:08,755 INFO L225 Difference]: With dead ends: 2115 [2023-12-20 01:33:08,756 INFO L226 Difference]: Without dead ends: 1577 [2023-12-20 01:33:08,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:33:08,757 INFO L413 NwaCegarLoop]: 1232 mSDtfsCounter, 226 mSDsluCounter, 1178 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 2410 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:33:08,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 2410 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:33:08,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1577 states. [2023-12-20 01:33:08,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1577 to 1571. [2023-12-20 01:33:08,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1571 states, 1570 states have (on average 1.7719745222929937) internal successors, (2782), 1570 states have internal predecessors, (2782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:08,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 2782 transitions. [2023-12-20 01:33:08,788 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 2782 transitions. Word has length 222 [2023-12-20 01:33:08,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:33:08,789 INFO L495 AbstractCegarLoop]: Abstraction has 1571 states and 2782 transitions. [2023-12-20 01:33:08,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:08,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 2782 transitions. [2023-12-20 01:33:08,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-12-20 01:33:08,792 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:33:08,792 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:33:08,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 01:33:08,792 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:33:08,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:33:08,793 INFO L85 PathProgramCache]: Analyzing trace with hash -2029632657, now seen corresponding path program 1 times [2023-12-20 01:33:08,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:33:08,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755220220] [2023-12-20 01:33:08,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:33:08,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:33:08,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:33:08,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:33:08,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:33:08,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755220220] [2023-12-20 01:33:08,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755220220] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:33:08,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:33:08,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:33:08,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752703327] [2023-12-20 01:33:08,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:33:08,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:33:08,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:33:08,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:33:08,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:33:08,951 INFO L87 Difference]: Start difference. First operand 1571 states and 2782 transitions. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:08,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:33:08,993 INFO L93 Difference]: Finished difference Result 3519 states and 6232 transitions. [2023-12-20 01:33:08,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:33:08,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 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 226 [2023-12-20 01:33:08,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:33:09,001 INFO L225 Difference]: With dead ends: 3519 [2023-12-20 01:33:09,001 INFO L226 Difference]: Without dead ends: 2497 [2023-12-20 01:33:09,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:33:09,003 INFO L413 NwaCegarLoop]: 1232 mSDtfsCounter, 218 mSDsluCounter, 1179 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 2411 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:33:09,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 2411 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:33:09,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2497 states. [2023-12-20 01:33:09,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2497 to 2487. [2023-12-20 01:33:09,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2487 states, 2486 states have (on average 1.7674979887369269) internal successors, (4394), 2486 states have internal predecessors, (4394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:09,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2487 states to 2487 states and 4394 transitions. [2023-12-20 01:33:09,062 INFO L78 Accepts]: Start accepts. Automaton has 2487 states and 4394 transitions. Word has length 226 [2023-12-20 01:33:09,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:33:09,063 INFO L495 AbstractCegarLoop]: Abstraction has 2487 states and 4394 transitions. [2023-12-20 01:33:09,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:09,063 INFO L276 IsEmpty]: Start isEmpty. Operand 2487 states and 4394 transitions. [2023-12-20 01:33:09,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2023-12-20 01:33:09,066 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:33:09,066 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:33:09,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 01:33:09,066 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:33:09,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:33:09,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1886031381, now seen corresponding path program 1 times [2023-12-20 01:33:09,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:33:09,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281741846] [2023-12-20 01:33:09,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:33:09,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:33:09,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:33:09,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:33:09,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:33:09,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281741846] [2023-12-20 01:33:09,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281741846] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:33:09,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:33:09,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:33:09,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441516137] [2023-12-20 01:33:09,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:33:09,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:33:09,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:33:09,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:33:09,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:33:09,227 INFO L87 Difference]: Start difference. First operand 2487 states and 4394 transitions. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:09,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:33:09,281 INFO L93 Difference]: Finished difference Result 6171 states and 10892 transitions. [2023-12-20 01:33:09,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:33:09,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 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 230 [2023-12-20 01:33:09,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:33:09,294 INFO L225 Difference]: With dead ends: 6171 [2023-12-20 01:33:09,294 INFO L226 Difference]: Without dead ends: 4233 [2023-12-20 01:33:09,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:33:09,299 INFO L413 NwaCegarLoop]: 1232 mSDtfsCounter, 210 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 2412 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:33:09,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 2412 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:33:09,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4233 states. [2023-12-20 01:33:09,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4233 to 4215. [2023-12-20 01:33:09,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4215 states, 4214 states have (on average 1.7603227337446608) internal successors, (7418), 4214 states have internal predecessors, (7418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:09,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4215 states to 4215 states and 7418 transitions. [2023-12-20 01:33:09,383 INFO L78 Accepts]: Start accepts. Automaton has 4215 states and 7418 transitions. Word has length 230 [2023-12-20 01:33:09,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:33:09,384 INFO L495 AbstractCegarLoop]: Abstraction has 4215 states and 7418 transitions. [2023-12-20 01:33:09,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:09,384 INFO L276 IsEmpty]: Start isEmpty. Operand 4215 states and 7418 transitions. [2023-12-20 01:33:09,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-12-20 01:33:09,387 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:33:09,387 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:33:09,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 01:33:09,387 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:33:09,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:33:09,388 INFO L85 PathProgramCache]: Analyzing trace with hash 2117635515, now seen corresponding path program 1 times [2023-12-20 01:33:09,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:33:09,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040735852] [2023-12-20 01:33:09,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:33:09,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:33:09,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:33:09,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:33:09,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:33:09,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040735852] [2023-12-20 01:33:09,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040735852] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:33:09,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:33:09,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 01:33:09,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336591376] [2023-12-20 01:33:09,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:33:09,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 01:33:09,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:33:09,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 01:33:09,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 01:33:09,611 INFO L87 Difference]: Start difference. First operand 4215 states and 7418 transitions. Second operand has 7 states, 7 states have (on average 33.42857142857143) internal successors, (234), 7 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:10,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:33:10,087 INFO L93 Difference]: Finished difference Result 25227 states and 44660 transitions. [2023-12-20 01:33:10,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 01:33:10,088 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 33.42857142857143) internal successors, (234), 7 states have internal predecessors, (234), 0 states have call successors, (0), 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 234 [2023-12-20 01:33:10,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:33:10,149 INFO L225 Difference]: With dead ends: 25227 [2023-12-20 01:33:10,149 INFO L226 Difference]: Without dead ends: 21561 [2023-12-20 01:33:10,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-20 01:33:10,175 INFO L413 NwaCegarLoop]: 1241 mSDtfsCounter, 3272 mSDsluCounter, 9550 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3272 SdHoareTripleChecker+Valid, 10791 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 01:33:10,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3272 Valid, 10791 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 01:33:10,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21561 states. [2023-12-20 01:33:10,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21561 to 7738. [2023-12-20 01:33:10,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7738 states, 7737 states have (on average 1.758821248545948) internal successors, (13608), 7737 states have internal predecessors, (13608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:10,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7738 states to 7738 states and 13608 transitions. [2023-12-20 01:33:10,511 INFO L78 Accepts]: Start accepts. Automaton has 7738 states and 13608 transitions. Word has length 234 [2023-12-20 01:33:10,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:33:10,512 INFO L495 AbstractCegarLoop]: Abstraction has 7738 states and 13608 transitions. [2023-12-20 01:33:10,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.42857142857143) internal successors, (234), 7 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:10,512 INFO L276 IsEmpty]: Start isEmpty. Operand 7738 states and 13608 transitions. [2023-12-20 01:33:10,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2023-12-20 01:33:10,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:33:10,517 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:33:10,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 01:33:10,517 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:33:10,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:33:10,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1148420136, now seen corresponding path program 1 times [2023-12-20 01:33:10,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:33:10,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648529107] [2023-12-20 01:33:10,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:33:10,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:33:10,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:33:10,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:33:10,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:33:10,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648529107] [2023-12-20 01:33:10,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648529107] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:33:10,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:33:10,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:33:10,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548126012] [2023-12-20 01:33:10,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:33:10,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:33:10,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:33:10,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:33:10,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:33:10,660 INFO L87 Difference]: Start difference. First operand 7738 states and 13608 transitions. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:10,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:33:10,894 INFO L93 Difference]: Finished difference Result 22547 states and 39801 transitions. [2023-12-20 01:33:10,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:33:10,895 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 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 235 [2023-12-20 01:33:10,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:33:10,934 INFO L225 Difference]: With dead ends: 22547 [2023-12-20 01:33:10,935 INFO L226 Difference]: Without dead ends: 15358 [2023-12-20 01:33:10,950 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 [2023-12-20 01:33:10,952 INFO L413 NwaCegarLoop]: 1238 mSDtfsCounter, 775 mSDsluCounter, 2661 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 3899 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:33:10,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 3899 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:33:10,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15358 states. [2023-12-20 01:33:11,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15358 to 11515. [2023-12-20 01:33:11,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11515 states, 11514 states have (on average 1.7595970123328122) internal successors, (20260), 11514 states have internal predecessors, (20260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:11,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11515 states to 11515 states and 20260 transitions. [2023-12-20 01:33:11,278 INFO L78 Accepts]: Start accepts. Automaton has 11515 states and 20260 transitions. Word has length 235 [2023-12-20 01:33:11,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:33:11,278 INFO L495 AbstractCegarLoop]: Abstraction has 11515 states and 20260 transitions. [2023-12-20 01:33:11,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:11,278 INFO L276 IsEmpty]: Start isEmpty. Operand 11515 states and 20260 transitions. [2023-12-20 01:33:11,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-12-20 01:33:11,283 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:33:11,283 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:33:11,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 01:33:11,284 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:33:11,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:33:11,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1172966212, now seen corresponding path program 1 times [2023-12-20 01:33:11,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:33:11,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211185246] [2023-12-20 01:33:11,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:33:11,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:33:11,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:33:11,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:33:11,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:33:11,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211185246] [2023-12-20 01:33:11,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211185246] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:33:11,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:33:11,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:33:11,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987824665] [2023-12-20 01:33:11,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:33:11,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:33:11,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:33:11,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:33:11,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:33:11,464 INFO L87 Difference]: Start difference. First operand 11515 states and 20260 transitions. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:11,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:33:11,729 INFO L93 Difference]: Finished difference Result 33849 states and 59649 transitions. [2023-12-20 01:33:11,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:33:11,730 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 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 236 [2023-12-20 01:33:11,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:33:11,765 INFO L225 Difference]: With dead ends: 33849 [2023-12-20 01:33:11,765 INFO L226 Difference]: Without dead ends: 22883 [2023-12-20 01:33:11,778 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 [2023-12-20 01:33:11,779 INFO L413 NwaCegarLoop]: 1224 mSDtfsCounter, 775 mSDsluCounter, 2663 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 3887 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:33:11,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 3887 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:33:11,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22883 states. [2023-12-20 01:33:12,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22883 to 17151. [2023-12-20 01:33:12,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17151 states, 17150 states have (on average 1.7565014577259475) internal successors, (30124), 17150 states have internal predecessors, (30124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:12,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17151 states to 17151 states and 30124 transitions. [2023-12-20 01:33:12,246 INFO L78 Accepts]: Start accepts. Automaton has 17151 states and 30124 transitions. Word has length 236 [2023-12-20 01:33:12,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:33:12,246 INFO L495 AbstractCegarLoop]: Abstraction has 17151 states and 30124 transitions. [2023-12-20 01:33:12,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:12,247 INFO L276 IsEmpty]: Start isEmpty. Operand 17151 states and 30124 transitions. [2023-12-20 01:33:12,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2023-12-20 01:33:12,253 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:33:12,253 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:33:12,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 01:33:12,253 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:33:12,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:33:12,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1939346321, now seen corresponding path program 1 times [2023-12-20 01:33:12,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:33:12,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349991802] [2023-12-20 01:33:12,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:33:12,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:33:12,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:33:12,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:33:12,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:33:12,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349991802] [2023-12-20 01:33:12,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349991802] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:33:12,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:33:12,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:33:12,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810749582] [2023-12-20 01:33:12,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:33:12,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:33:12,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:33:12,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:33:12,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:33:12,395 INFO L87 Difference]: Start difference. First operand 17151 states and 30124 transitions. Second operand has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:12,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:33:12,843 INFO L93 Difference]: Finished difference Result 50821 states and 89405 transitions. [2023-12-20 01:33:12,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:33:12,843 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 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 237 [2023-12-20 01:33:12,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:33:12,907 INFO L225 Difference]: With dead ends: 50821 [2023-12-20 01:33:12,907 INFO L226 Difference]: Without dead ends: 34219 [2023-12-20 01:33:12,932 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 [2023-12-20 01:33:12,933 INFO L413 NwaCegarLoop]: 1224 mSDtfsCounter, 773 mSDsluCounter, 2665 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 3889 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:33:12,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [773 Valid, 3889 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:33:12,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34219 states. [2023-12-20 01:33:13,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34219 to 25615. [2023-12-20 01:33:13,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25615 states, 25614 states have (on average 1.7534941828687436) internal successors, (44914), 25614 states have internal predecessors, (44914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:13,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25615 states to 25615 states and 44914 transitions. [2023-12-20 01:33:13,763 INFO L78 Accepts]: Start accepts. Automaton has 25615 states and 44914 transitions. Word has length 237 [2023-12-20 01:33:13,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:33:13,764 INFO L495 AbstractCegarLoop]: Abstraction has 25615 states and 44914 transitions. [2023-12-20 01:33:13,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:13,764 INFO L276 IsEmpty]: Start isEmpty. Operand 25615 states and 44914 transitions. [2023-12-20 01:33:13,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-12-20 01:33:13,773 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:33:13,773 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:33:13,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 01:33:13,774 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:33:13,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:33:13,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1174486854, now seen corresponding path program 1 times [2023-12-20 01:33:13,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:33:13,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159916385] [2023-12-20 01:33:13,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:33:13,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:33:13,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:33:13,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:33:13,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:33:13,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159916385] [2023-12-20 01:33:13,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159916385] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:33:13,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:33:13,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:33:13,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926713519] [2023-12-20 01:33:13,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:33:13,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:33:13,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:33:13,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:33:13,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:33:13,890 INFO L87 Difference]: Start difference. First operand 25615 states and 44914 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:14,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:33:14,399 INFO L93 Difference]: Finished difference Result 57522 states and 101104 transitions. [2023-12-20 01:33:14,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:33:14,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 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 238 [2023-12-20 01:33:14,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:33:14,467 INFO L225 Difference]: With dead ends: 57522 [2023-12-20 01:33:14,468 INFO L226 Difference]: Without dead ends: 39923 [2023-12-20 01:33:14,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:33:14,488 INFO L413 NwaCegarLoop]: 1446 mSDtfsCounter, 241 mSDsluCounter, 1201 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 2647 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:33:14,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 2647 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:33:14,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39923 states. [2023-12-20 01:33:14,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39923 to 39921. [2023-12-20 01:33:15,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39921 states, 39920 states have (on average 1.7498997995991985) internal successors, (69856), 39920 states have internal predecessors, (69856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:15,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39921 states to 39921 states and 69856 transitions. [2023-12-20 01:33:15,261 INFO L78 Accepts]: Start accepts. Automaton has 39921 states and 69856 transitions. Word has length 238 [2023-12-20 01:33:15,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:33:15,261 INFO L495 AbstractCegarLoop]: Abstraction has 39921 states and 69856 transitions. [2023-12-20 01:33:15,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:15,261 INFO L276 IsEmpty]: Start isEmpty. Operand 39921 states and 69856 transitions. [2023-12-20 01:33:15,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-12-20 01:33:15,265 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:33:15,265 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:33:15,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 01:33:15,266 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:33:15,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:33:15,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1573217210, now seen corresponding path program 1 times [2023-12-20 01:33:15,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:33:15,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956625685] [2023-12-20 01:33:15,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:33:15,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:33:15,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:33:15,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:33:15,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:33:15,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956625685] [2023-12-20 01:33:15,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956625685] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:33:15,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:33:15,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:33:15,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382353000] [2023-12-20 01:33:15,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:33:15,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:33:15,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:33:15,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:33:15,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:33:15,367 INFO L87 Difference]: Start difference. First operand 39921 states and 69856 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:15,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:33:15,952 INFO L93 Difference]: Finished difference Result 78623 states and 137545 transitions. [2023-12-20 01:33:15,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:33:15,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 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 238 [2023-12-20 01:33:15,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:33:16,131 INFO L225 Difference]: With dead ends: 78623 [2023-12-20 01:33:16,131 INFO L226 Difference]: Without dead ends: 57193 [2023-12-20 01:33:16,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:33:16,164 INFO L413 NwaCegarLoop]: 1345 mSDtfsCounter, 217 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 2549 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:33:16,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 2549 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:33:16,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57193 states. [2023-12-20 01:33:16,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57193 to 57191. [2023-12-20 01:33:16,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57191 states, 57190 states have (on average 1.7430494841755553) internal successors, (99685), 57190 states have internal predecessors, (99685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:17,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57191 states to 57191 states and 99685 transitions. [2023-12-20 01:33:17,125 INFO L78 Accepts]: Start accepts. Automaton has 57191 states and 99685 transitions. Word has length 238 [2023-12-20 01:33:17,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:33:17,125 INFO L495 AbstractCegarLoop]: Abstraction has 57191 states and 99685 transitions. [2023-12-20 01:33:17,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:17,126 INFO L276 IsEmpty]: Start isEmpty. Operand 57191 states and 99685 transitions. [2023-12-20 01:33:17,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-12-20 01:33:17,129 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:33:17,129 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:33:17,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 01:33:17,129 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:33:17,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:33:17,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1318339770, now seen corresponding path program 1 times [2023-12-20 01:33:17,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:33:17,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122960873] [2023-12-20 01:33:17,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:33:17,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:33:17,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:33:17,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:33:17,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:33:17,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122960873] [2023-12-20 01:33:17,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122960873] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:33:17,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:33:17,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:33:17,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333944833] [2023-12-20 01:33:17,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:33:17,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:33:17,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:33:17,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:33:17,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:33:17,266 INFO L87 Difference]: Start difference. First operand 57191 states and 99685 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:18,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:33:18,025 INFO L93 Difference]: Finished difference Result 111989 states and 195215 transitions. [2023-12-20 01:33:18,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:33:18,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 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 238 [2023-12-20 01:33:18,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:33:18,179 INFO L225 Difference]: With dead ends: 111989 [2023-12-20 01:33:18,179 INFO L226 Difference]: Without dead ends: 81427 [2023-12-20 01:33:18,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:33:18,217 INFO L413 NwaCegarLoop]: 1325 mSDtfsCounter, 209 mSDsluCounter, 1205 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 2530 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:33:18,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 2530 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:33:18,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81427 states. [2023-12-20 01:33:19,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81427 to 81425. [2023-12-20 01:33:19,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81425 states, 81424 states have (on average 1.736158872077029) internal successors, (141365), 81424 states have internal predecessors, (141365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:19,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81425 states to 81425 states and 141365 transitions. [2023-12-20 01:33:19,514 INFO L78 Accepts]: Start accepts. Automaton has 81425 states and 141365 transitions. Word has length 238 [2023-12-20 01:33:19,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:33:19,514 INFO L495 AbstractCegarLoop]: Abstraction has 81425 states and 141365 transitions. [2023-12-20 01:33:19,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:19,514 INFO L276 IsEmpty]: Start isEmpty. Operand 81425 states and 141365 transitions. [2023-12-20 01:33:19,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-12-20 01:33:19,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:33:19,518 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:33:19,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 01:33:19,518 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:33:19,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:33:19,519 INFO L85 PathProgramCache]: Analyzing trace with hash -67222323, now seen corresponding path program 1 times [2023-12-20 01:33:19,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:33:19,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532665685] [2023-12-20 01:33:19,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:33:19,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:33:19,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:33:19,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:33:19,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:33:19,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532665685] [2023-12-20 01:33:19,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532665685] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:33:19,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:33:19,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:33:19,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143375997] [2023-12-20 01:33:19,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:33:19,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:33:19,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:33:19,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:33:19,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:33:19,661 INFO L87 Difference]: Start difference. First operand 81425 states and 141365 transitions. Second operand has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:21,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:33:21,267 INFO L93 Difference]: Finished difference Result 266655 states and 463318 transitions. [2023-12-20 01:33:21,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:33:21,268 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 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 238 [2023-12-20 01:33:21,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:33:21,566 INFO L225 Difference]: With dead ends: 266655 [2023-12-20 01:33:21,567 INFO L226 Difference]: Without dead ends: 186125 [2023-12-20 01:33:21,785 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 [2023-12-20 01:33:21,785 INFO L413 NwaCegarLoop]: 1224 mSDtfsCounter, 771 mSDsluCounter, 2667 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 3891 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:33:21,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 3891 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:33:21,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186125 states. [2023-12-20 01:33:23,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186125 to 133515. [2023-12-20 01:33:23,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133515 states, 133514 states have (on average 1.731151789325464) internal successors, (231133), 133514 states have internal predecessors, (231133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:24,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133515 states to 133515 states and 231133 transitions. [2023-12-20 01:33:24,197 INFO L78 Accepts]: Start accepts. Automaton has 133515 states and 231133 transitions. Word has length 238 [2023-12-20 01:33:24,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:33:24,199 INFO L495 AbstractCegarLoop]: Abstraction has 133515 states and 231133 transitions. [2023-12-20 01:33:24,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:24,200 INFO L276 IsEmpty]: Start isEmpty. Operand 133515 states and 231133 transitions. [2023-12-20 01:33:24,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-12-20 01:33:24,202 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:33:24,203 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:33:24,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 01:33:24,203 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:33:24,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:33:24,203 INFO L85 PathProgramCache]: Analyzing trace with hash -177765702, now seen corresponding path program 1 times [2023-12-20 01:33:24,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:33:24,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887725043] [2023-12-20 01:33:24,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:33:24,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:33:24,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:33:24,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:33:24,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:33:24,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887725043] [2023-12-20 01:33:24,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887725043] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:33:24,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:33:24,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:33:24,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7090606] [2023-12-20 01:33:24,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:33:24,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:33:24,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:33:24,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:33:24,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:33:24,528 INFO L87 Difference]: Start difference. First operand 133515 states and 231133 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:26,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:33:26,294 INFO L93 Difference]: Finished difference Result 298015 states and 515529 transitions. [2023-12-20 01:33:26,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:33:26,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 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 238 [2023-12-20 01:33:26,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:33:26,639 INFO L225 Difference]: With dead ends: 298015 [2023-12-20 01:33:26,639 INFO L226 Difference]: Without dead ends: 205195 [2023-12-20 01:33:26,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:33:26,744 INFO L413 NwaCegarLoop]: 1389 mSDtfsCounter, 225 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 2592 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:33:26,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 2592 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:33:26,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205195 states. [2023-12-20 01:33:29,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205195 to 205193. [2023-12-20 01:33:29,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205193 states, 205192 states have (on average 1.7210709969199578) internal successors, (353150), 205192 states have internal predecessors, (353150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:30,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205193 states to 205193 states and 353150 transitions. [2023-12-20 01:33:30,319 INFO L78 Accepts]: Start accepts. Automaton has 205193 states and 353150 transitions. Word has length 238 [2023-12-20 01:33:30,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:33:30,319 INFO L495 AbstractCegarLoop]: Abstraction has 205193 states and 353150 transitions. [2023-12-20 01:33:30,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:30,319 INFO L276 IsEmpty]: Start isEmpty. Operand 205193 states and 353150 transitions. [2023-12-20 01:33:30,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-12-20 01:33:30,321 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:33:30,321 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:33:30,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 01:33:30,321 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:33:30,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:33:30,322 INFO L85 PathProgramCache]: Analyzing trace with hash 343581114, now seen corresponding path program 1 times [2023-12-20 01:33:30,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:33:30,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920650863] [2023-12-20 01:33:30,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:33:30,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:33:30,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:33:30,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:33:30,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:33:30,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920650863] [2023-12-20 01:33:30,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920650863] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:33:30,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:33:30,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:33:30,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038794423] [2023-12-20 01:33:30,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:33:30,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:33:30,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:33:30,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:33:30,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:33:30,404 INFO L87 Difference]: Start difference. First operand 205193 states and 353150 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:33,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:33:33,199 INFO L93 Difference]: Finished difference Result 456992 states and 785610 transitions. [2023-12-20 01:33:33,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:33:33,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 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 238 [2023-12-20 01:33:33,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:33:33,761 INFO L225 Difference]: With dead ends: 456992 [2023-12-20 01:33:33,762 INFO L226 Difference]: Without dead ends: 313684 [2023-12-20 01:33:33,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:33:33,865 INFO L413 NwaCegarLoop]: 1434 mSDtfsCounter, 233 mSDsluCounter, 1202 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 2636 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:33:33,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 2636 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:33:34,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313684 states. [2023-12-20 01:33:38,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313684 to 313682. [2023-12-20 01:33:38,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313682 states, 313681 states have (on average 1.7089654776668015) internal successors, (536070), 313681 states have internal predecessors, (536070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:39,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313682 states to 313682 states and 536070 transitions. [2023-12-20 01:33:39,439 INFO L78 Accepts]: Start accepts. Automaton has 313682 states and 536070 transitions. Word has length 238 [2023-12-20 01:33:39,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:33:39,439 INFO L495 AbstractCegarLoop]: Abstraction has 313682 states and 536070 transitions. [2023-12-20 01:33:39,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:39,439 INFO L276 IsEmpty]: Start isEmpty. Operand 313682 states and 536070 transitions. [2023-12-20 01:33:39,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-12-20 01:33:39,440 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:33:39,440 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:33:39,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 01:33:39,441 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:33:39,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:33:39,441 INFO L85 PathProgramCache]: Analyzing trace with hash -2135856390, now seen corresponding path program 1 times [2023-12-20 01:33:39,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:33:39,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604467886] [2023-12-20 01:33:39,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:33:39,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:33:39,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:33:39,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:33:39,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:33:39,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604467886] [2023-12-20 01:33:39,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604467886] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:33:39,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:33:39,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:33:39,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300395643] [2023-12-20 01:33:39,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:33:39,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:33:39,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:33:39,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:33:39,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:33:39,559 INFO L87 Difference]: Start difference. First operand 313682 states and 536070 transitions. Second operand has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:45,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:33:45,843 INFO L93 Difference]: Finished difference Result 1027769 states and 1757853 transitions. [2023-12-20 01:33:45,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:33:45,843 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 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 239 [2023-12-20 01:33:45,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:33:47,544 INFO L225 Difference]: With dead ends: 1027769 [2023-12-20 01:33:47,544 INFO L226 Difference]: Without dead ends: 714686 [2023-12-20 01:33:47,724 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 [2023-12-20 01:33:47,725 INFO L413 NwaCegarLoop]: 1224 mSDtfsCounter, 769 mSDsluCounter, 2669 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 3893 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:33:47,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 3893 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:33:48,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714686 states. [2023-12-20 01:33:57,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714686 to 513013. [2023-12-20 01:33:58,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513013 states, 513012 states have (on average 1.7028958386938318) internal successors, (873606), 513012 states have internal predecessors, (873606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:59,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513013 states to 513013 states and 873606 transitions. [2023-12-20 01:33:59,605 INFO L78 Accepts]: Start accepts. Automaton has 513013 states and 873606 transitions. Word has length 239 [2023-12-20 01:33:59,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:33:59,605 INFO L495 AbstractCegarLoop]: Abstraction has 513013 states and 873606 transitions. [2023-12-20 01:33:59,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:59,606 INFO L276 IsEmpty]: Start isEmpty. Operand 513013 states and 873606 transitions. [2023-12-20 01:33:59,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-12-20 01:33:59,607 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:33:59,607 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:33:59,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 01:33:59,607 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:33:59,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:33:59,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1044639102, now seen corresponding path program 1 times [2023-12-20 01:33:59,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:33:59,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556204077] [2023-12-20 01:33:59,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:33:59,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:33:59,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:33:59,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:33:59,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:33:59,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556204077] [2023-12-20 01:33:59,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556204077] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:33:59,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:33:59,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 01:33:59,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476120157] [2023-12-20 01:33:59,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:33:59,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 01:33:59,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:33:59,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 01:33:59,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-20 01:33:59,952 INFO L87 Difference]: Start difference. First operand 513013 states and 873606 transitions. Second operand has 7 states, 7 states have (on average 34.42857142857143) internal successors, (241), 7 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:34:05,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:34:05,650 INFO L93 Difference]: Finished difference Result 1025429 states and 1746162 transitions. [2023-12-20 01:34:05,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 01:34:05,650 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 34.42857142857143) internal successors, (241), 7 states have internal predecessors, (241), 0 states have call successors, (0), 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 241 [2023-12-20 01:34:05,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:34:06,866 INFO L225 Difference]: With dead ends: 1025429 [2023-12-20 01:34:06,866 INFO L226 Difference]: Without dead ends: 513015 [2023-12-20 01:34:07,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-20 01:34:07,052 INFO L413 NwaCegarLoop]: 1233 mSDtfsCounter, 219 mSDsluCounter, 5960 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 7193 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:34:07,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 7193 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:34:07,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513015 states. [2023-12-20 01:34:14,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513015 to 513013. [2023-12-20 01:34:15,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513013 states, 513012 states have (on average 1.6968043632507621) internal successors, (870481), 513012 states have internal predecessors, (870481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)