/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 false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-3.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 04:31:35,763 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 04:31:35,844 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 04:31:35,848 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 04:31:35,849 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 04:31:35,876 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 04:31:35,876 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 04:31:35,877 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 04:31:35,877 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 04:31:35,881 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 04:31:35,881 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 04:31:35,881 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 04:31:35,882 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 04:31:35,883 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 04:31:35,883 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 04:31:35,883 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 04:31:35,884 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 04:31:35,884 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 04:31:35,884 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 04:31:35,884 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 04:31:35,884 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 04:31:35,885 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 04:31:35,885 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 04:31:35,885 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 04:31:35,886 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 04:31:35,886 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 04:31:35,886 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 04:31:35,886 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 04:31:35,887 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 04:31:35,887 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 04:31:35,888 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 04:31:35,888 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 04:31:35,888 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:31:35,889 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 04:31:35,889 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 04:31:35,889 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 04:31:35,889 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 04:31:35,889 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 04:31:35,890 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 04:31:35,890 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 04:31:35,890 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 04:31:35,890 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 04:31:35,891 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 04:31:35,891 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 04:31:36,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 04:31:36,133 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 04:31:36,136 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 04:31:36,137 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 04:31:36,137 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 04:31:36,138 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-3.i [2023-12-16 04:31:37,322 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 04:31:37,535 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 04:31:37,535 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-3.i [2023-12-16 04:31:37,543 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b42980ef/f273b576c2e6478cb1e96a2fc26df44a/FLAGe9db8eb1b [2023-12-16 04:31:37,559 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b42980ef/f273b576c2e6478cb1e96a2fc26df44a [2023-12-16 04:31:37,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 04:31:37,563 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 04:31:37,564 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 04:31:37,564 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 04:31:37,569 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 04:31:37,569 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:31:37" (1/1) ... [2023-12-16 04:31:37,570 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63b878e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:31:37, skipping insertion in model container [2023-12-16 04:31:37,571 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:31:37" (1/1) ... [2023-12-16 04:31:37,607 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 04:31:37,730 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-3.i[916,929] [2023-12-16 04:31:37,788 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:31:37,801 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 04:31:37,813 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-3.i[916,929] [2023-12-16 04:31:37,845 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:31:37,863 INFO L206 MainTranslator]: Completed translation [2023-12-16 04:31:37,864 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:31:37 WrapperNode [2023-12-16 04:31:37,864 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 04:31:37,865 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 04:31:37,865 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 04:31:37,865 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 04:31:37,871 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:31:37" (1/1) ... [2023-12-16 04:31:37,883 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:31:37" (1/1) ... [2023-12-16 04:31:37,916 INFO L138 Inliner]: procedures = 29, calls = 179, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 639 [2023-12-16 04:31:37,922 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 04:31:37,923 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 04:31:37,923 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 04:31:37,923 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 04:31:37,933 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:31:37" (1/1) ... [2023-12-16 04:31:37,933 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:31:37" (1/1) ... [2023-12-16 04:31:37,946 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:31:37" (1/1) ... [2023-12-16 04:31:37,970 INFO L175 MemorySlicer]: Split 151 memory accesses to 2 slices as follows [2, 149]. 99 percent of accesses are in the largest equivalence class. The 16 initializations are split as follows [2, 14]. The 17 writes are split as follows [0, 17]. [2023-12-16 04:31:37,970 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:31:37" (1/1) ... [2023-12-16 04:31:37,970 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:31:37" (1/1) ... [2023-12-16 04:31:37,991 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:31:37" (1/1) ... [2023-12-16 04:31:38,002 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:31:37" (1/1) ... [2023-12-16 04:31:38,013 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:31:37" (1/1) ... [2023-12-16 04:31:38,016 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:31:37" (1/1) ... [2023-12-16 04:31:38,021 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 04:31:38,022 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 04:31:38,022 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 04:31:38,022 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 04:31:38,023 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:31:37" (1/1) ... [2023-12-16 04:31:38,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:31:38,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:31:38,065 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) [2023-12-16 04:31:38,085 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 [2023-12-16 04:31:38,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 04:31:38,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2023-12-16 04:31:38,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2023-12-16 04:31:38,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-16 04:31:38,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-16 04:31:38,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2023-12-16 04:31:38,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2023-12-16 04:31:38,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-16 04:31:38,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-16 04:31:38,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2023-12-16 04:31:38,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2023-12-16 04:31:38,097 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 04:31:38,097 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 04:31:38,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 04:31:38,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-16 04:31:38,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 04:31:38,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 04:31:38,250 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 04:31:38,253 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 04:31:38,729 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 04:31:38,764 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 04:31:38,764 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 04:31:38,765 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:31:38 BoogieIcfgContainer [2023-12-16 04:31:38,765 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 04:31:38,767 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 04:31:38,767 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 04:31:38,770 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 04:31:38,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:31:37" (1/3) ... [2023-12-16 04:31:38,770 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@656e71db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:31:38, skipping insertion in model container [2023-12-16 04:31:38,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:31:37" (2/3) ... [2023-12-16 04:31:38,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@656e71db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:31:38, skipping insertion in model container [2023-12-16 04:31:38,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:31:38" (3/3) ... [2023-12-16 04:31:38,772 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-sp_file-3.i [2023-12-16 04:31:38,787 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 04:31:38,787 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 04:31:38,830 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 04:31:38,836 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;@48ba6714, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 04:31:38,836 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 04:31:38,846 INFO L276 IsEmpty]: Start isEmpty. Operand has 142 states, 123 states have (on average 1.4878048780487805) internal successors, (183), 124 states have internal predecessors, (183), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-16 04:31:38,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-16 04:31:38,873 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:31:38,873 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:31:38,874 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:31:38,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:31:38,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1734083132, now seen corresponding path program 1 times [2023-12-16 04:31:38,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:31:38,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006678608] [2023-12-16 04:31:38,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:31:38,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:31:39,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:39,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:31:39,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:39,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:31:39,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:39,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:31:39,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:39,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:31:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:39,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:31:39,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:39,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:31:39,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:39,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:31:39,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:39,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:31:39,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:39,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-16 04:31:39,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:39,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 04:31:39,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:39,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-16 04:31:39,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:39,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 04:31:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:39,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-16 04:31:39,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:39,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-16 04:31:39,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:39,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-16 04:31:39,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:39,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-16 04:31:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:39,330 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:31:39,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:31:39,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006678608] [2023-12-16 04:31:39,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006678608] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:31:39,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:31:39,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 04:31:39,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493662821] [2023-12-16 04:31:39,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:31:39,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 04:31:39,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:31:39,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 04:31:39,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 04:31:39,367 INFO L87 Difference]: Start difference. First operand has 142 states, 123 states have (on average 1.4878048780487805) internal successors, (183), 124 states have internal predecessors, (183), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-16 04:31:39,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:31:39,420 INFO L93 Difference]: Finished difference Result 281 states and 444 transitions. [2023-12-16 04:31:39,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 04:31:39,422 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 128 [2023-12-16 04:31:39,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:31:39,429 INFO L225 Difference]: With dead ends: 281 [2023-12-16 04:31:39,430 INFO L226 Difference]: Without dead ends: 140 [2023-12-16 04:31:39,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 04:31:39,435 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:31:39,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 206 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:31:39,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-12-16 04:31:39,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2023-12-16 04:31:39,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 122 states have (on average 1.459016393442623) internal successors, (178), 122 states have internal predecessors, (178), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-16 04:31:39,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 210 transitions. [2023-12-16 04:31:39,483 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 210 transitions. Word has length 128 [2023-12-16 04:31:39,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:31:39,483 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 210 transitions. [2023-12-16 04:31:39,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-16 04:31:39,483 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 210 transitions. [2023-12-16 04:31:39,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-16 04:31:39,488 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:31:39,488 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:31:39,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 04:31:39,489 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:31:39,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:31:39,489 INFO L85 PathProgramCache]: Analyzing trace with hash 2107692844, now seen corresponding path program 1 times [2023-12-16 04:31:39,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:31:39,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694061058] [2023-12-16 04:31:39,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:31:39,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:31:39,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:39,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:31:39,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:39,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:31:39,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:39,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:31:39,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:39,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:31:39,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:39,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:31:39,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:39,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:31:39,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:39,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:31:39,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:39,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:31:39,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:39,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-16 04:31:39,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:39,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 04:31:39,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:39,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-16 04:31:39,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:39,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 04:31:39,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:39,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-16 04:31:39,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:39,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-16 04:31:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:39,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-16 04:31:39,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:39,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-16 04:31:39,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:39,811 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:31:39,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:31:39,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694061058] [2023-12-16 04:31:39,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694061058] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:31:39,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:31:39,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:31:39,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281316771] [2023-12-16 04:31:39,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:31:39,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:31:39,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:31:39,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:31:39,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:31:39,824 INFO L87 Difference]: Start difference. First operand 140 states and 210 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-16 04:31:39,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:31:39,954 INFO L93 Difference]: Finished difference Result 285 states and 428 transitions. [2023-12-16 04:31:39,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 04:31:39,954 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 128 [2023-12-16 04:31:39,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:31:39,956 INFO L225 Difference]: With dead ends: 285 [2023-12-16 04:31:39,956 INFO L226 Difference]: Without dead ends: 146 [2023-12-16 04:31:39,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:31:39,958 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 10 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:31:39,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 610 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:31:39,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-12-16 04:31:39,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 142. [2023-12-16 04:31:39,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 124 states have (on average 1.4516129032258065) internal successors, (180), 124 states have internal predecessors, (180), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-16 04:31:39,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 212 transitions. [2023-12-16 04:31:39,972 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 212 transitions. Word has length 128 [2023-12-16 04:31:39,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:31:39,972 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 212 transitions. [2023-12-16 04:31:39,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-16 04:31:39,973 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 212 transitions. [2023-12-16 04:31:39,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-16 04:31:39,976 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:31:39,976 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:31:39,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 04:31:39,977 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:31:39,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:31:39,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1792907666, now seen corresponding path program 1 times [2023-12-16 04:31:39,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:31:39,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269893214] [2023-12-16 04:31:39,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:31:39,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:31:40,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:40,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:31:40,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:40,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:31:40,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:40,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:31:40,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:40,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:31:40,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:40,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:31:40,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:40,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:31:40,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:40,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:31:40,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:40,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:31:40,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:40,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-16 04:31:40,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:40,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 04:31:40,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:40,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-16 04:31:40,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:40,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 04:31:40,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:40,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-16 04:31:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:40,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-16 04:31:40,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:40,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-16 04:31:40,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:40,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-16 04:31:40,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:40,275 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:31:40,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:31:40,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269893214] [2023-12-16 04:31:40,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269893214] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:31:40,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:31:40,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:31:40,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522870940] [2023-12-16 04:31:40,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:31:40,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:31:40,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:31:40,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:31:40,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:31:40,285 INFO L87 Difference]: Start difference. First operand 142 states and 212 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:31:40,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:31:40,356 INFO L93 Difference]: Finished difference Result 321 states and 481 transitions. [2023-12-16 04:31:40,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 04:31:40,357 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 128 [2023-12-16 04:31:40,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:31:40,362 INFO L225 Difference]: With dead ends: 321 [2023-12-16 04:31:40,362 INFO L226 Difference]: Without dead ends: 180 [2023-12-16 04:31:40,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:31:40,369 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 67 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:31:40,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 696 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:31:40,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-12-16 04:31:40,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 144. [2023-12-16 04:31:40,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 126 states have (on average 1.4444444444444444) internal successors, (182), 126 states have internal predecessors, (182), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-16 04:31:40,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 214 transitions. [2023-12-16 04:31:40,394 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 214 transitions. Word has length 128 [2023-12-16 04:31:40,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:31:40,394 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 214 transitions. [2023-12-16 04:31:40,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:31:40,395 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 214 transitions. [2023-12-16 04:31:40,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-16 04:31:40,401 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:31:40,401 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:31:40,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 04:31:40,402 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:31:40,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:31:40,402 INFO L85 PathProgramCache]: Analyzing trace with hash -39285732, now seen corresponding path program 1 times [2023-12-16 04:31:40,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:31:40,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310253641] [2023-12-16 04:31:40,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:31:40,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:31:40,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:40,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:31:40,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:40,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:31:40,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:40,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:31:40,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:40,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:31:40,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:40,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:31:40,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:40,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:31:40,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:40,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:31:40,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:40,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:31:40,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:40,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-16 04:31:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:40,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 04:31:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:40,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-16 04:31:40,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:40,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 04:31:40,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:40,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-16 04:31:40,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:40,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-16 04:31:40,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:40,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-16 04:31:40,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:40,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-16 04:31:40,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:40,547 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:31:40,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:31:40,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310253641] [2023-12-16 04:31:40,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310253641] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:31:40,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:31:40,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 04:31:40,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34553091] [2023-12-16 04:31:40,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:31:40,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:31:40,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:31:40,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:31:40,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:31:40,550 INFO L87 Difference]: Start difference. First operand 144 states and 214 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:31:40,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:31:40,608 INFO L93 Difference]: Finished difference Result 363 states and 541 transitions. [2023-12-16 04:31:40,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:31:40,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 130 [2023-12-16 04:31:40,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:31:40,611 INFO L225 Difference]: With dead ends: 363 [2023-12-16 04:31:40,611 INFO L226 Difference]: Without dead ends: 220 [2023-12-16 04:31:40,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:31:40,613 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 111 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:31:40,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 399 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:31:40,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-12-16 04:31:40,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 176. [2023-12-16 04:31:40,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 158 states have (on average 1.4620253164556962) internal successors, (231), 158 states have internal predecessors, (231), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-16 04:31:40,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 263 transitions. [2023-12-16 04:31:40,628 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 263 transitions. Word has length 130 [2023-12-16 04:31:40,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:31:40,629 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 263 transitions. [2023-12-16 04:31:40,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:31:40,629 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 263 transitions. [2023-12-16 04:31:40,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-16 04:31:40,631 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:31:40,631 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:31:40,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 04:31:40,631 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:31:40,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:31:40,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1308191411, now seen corresponding path program 1 times [2023-12-16 04:31:40,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:31:40,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927004471] [2023-12-16 04:31:40,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:31:40,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:31:40,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:43,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:31:43,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:43,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:31:43,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:43,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:31:43,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:43,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:31:43,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:43,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:31:43,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:43,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:31:43,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:43,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:31:43,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:43,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:31:43,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:43,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-16 04:31:43,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:43,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 04:31:43,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:43,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-16 04:31:43,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:43,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 04:31:43,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:43,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-16 04:31:43,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:43,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-16 04:31:43,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:43,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-16 04:31:43,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:43,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-16 04:31:43,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:43,613 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:31:43,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:31:43,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927004471] [2023-12-16 04:31:43,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927004471] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:31:43,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:31:43,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-16 04:31:43,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64810112] [2023-12-16 04:31:43,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:31:43,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 04:31:43,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:31:43,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 04:31:43,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-16 04:31:43,617 INFO L87 Difference]: Start difference. First operand 176 states and 263 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-16 04:31:44,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:31:44,532 INFO L93 Difference]: Finished difference Result 479 states and 717 transitions. [2023-12-16 04:31:44,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 04:31:44,533 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 130 [2023-12-16 04:31:44,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:31:44,536 INFO L225 Difference]: With dead ends: 479 [2023-12-16 04:31:44,536 INFO L226 Difference]: Without dead ends: 304 [2023-12-16 04:31:44,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2023-12-16 04:31:44,538 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 787 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 04:31:44,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 1032 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 04:31:44,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2023-12-16 04:31:44,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 234. [2023-12-16 04:31:44,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 216 states have (on average 1.4722222222222223) internal successors, (318), 216 states have internal predecessors, (318), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-16 04:31:44,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 350 transitions. [2023-12-16 04:31:44,568 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 350 transitions. Word has length 130 [2023-12-16 04:31:44,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:31:44,569 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 350 transitions. [2023-12-16 04:31:44,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-16 04:31:44,569 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 350 transitions. [2023-12-16 04:31:44,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-16 04:31:44,571 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:31:44,571 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:31:44,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 04:31:44,571 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:31:44,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:31:44,571 INFO L85 PathProgramCache]: Analyzing trace with hash -130787855, now seen corresponding path program 1 times [2023-12-16 04:31:44,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:31:44,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060464667] [2023-12-16 04:31:44,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:31:44,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:31:44,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:44,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:31:44,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:44,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:31:44,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:44,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:31:44,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:44,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:31:44,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:44,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:31:44,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:44,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:31:44,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:44,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:31:44,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:44,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:31:44,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:44,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-16 04:31:44,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:44,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 04:31:44,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:44,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-16 04:31:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:44,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 04:31:44,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:44,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-16 04:31:44,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:44,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-16 04:31:44,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:44,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-16 04:31:44,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:44,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-16 04:31:44,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:44,728 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:31:44,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:31:44,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060464667] [2023-12-16 04:31:44,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060464667] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:31:44,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:31:44,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:31:44,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111326207] [2023-12-16 04:31:44,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:31:44,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:31:44,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:31:44,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:31:44,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:31:44,730 INFO L87 Difference]: Start difference. First operand 234 states and 350 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:31:44,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:31:44,791 INFO L93 Difference]: Finished difference Result 553 states and 827 transitions. [2023-12-16 04:31:44,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 04:31:44,791 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 131 [2023-12-16 04:31:44,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:31:44,793 INFO L225 Difference]: With dead ends: 553 [2023-12-16 04:31:44,793 INFO L226 Difference]: Without dead ends: 320 [2023-12-16 04:31:44,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 04:31:44,794 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 124 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:31:44,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 900 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:31:44,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2023-12-16 04:31:44,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 236. [2023-12-16 04:31:44,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 218 states have (on average 1.4678899082568808) internal successors, (320), 218 states have internal predecessors, (320), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-16 04:31:44,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 352 transitions. [2023-12-16 04:31:44,808 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 352 transitions. Word has length 131 [2023-12-16 04:31:44,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:31:44,809 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 352 transitions. [2023-12-16 04:31:44,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:31:44,809 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 352 transitions. [2023-12-16 04:31:44,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-16 04:31:44,811 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:31:44,811 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:31:44,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 04:31:44,811 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:31:44,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:31:44,812 INFO L85 PathProgramCache]: Analyzing trace with hash -2126404312, now seen corresponding path program 1 times [2023-12-16 04:31:44,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:31:44,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100994782] [2023-12-16 04:31:44,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:31:44,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:31:44,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:44,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:31:44,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:44,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:31:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:44,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:31:44,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:44,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:31:44,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:44,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:31:44,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:44,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:31:44,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:44,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:31:44,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:44,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:31:44,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:44,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-16 04:31:44,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:44,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 04:31:44,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:44,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-16 04:31:44,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:44,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 04:31:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:44,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-16 04:31:44,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:44,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-16 04:31:44,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:44,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-16 04:31:44,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:44,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-16 04:31:44,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:44,983 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:31:44,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:31:44,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100994782] [2023-12-16 04:31:44,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100994782] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:31:44,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:31:44,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:31:44,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023780797] [2023-12-16 04:31:44,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:31:44,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:31:44,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:31:44,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:31:44,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:31:44,986 INFO L87 Difference]: Start difference. First operand 236 states and 352 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:31:45,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:31:45,040 INFO L93 Difference]: Finished difference Result 496 states and 741 transitions. [2023-12-16 04:31:45,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 04:31:45,041 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 132 [2023-12-16 04:31:45,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:31:45,042 INFO L225 Difference]: With dead ends: 496 [2023-12-16 04:31:45,042 INFO L226 Difference]: Without dead ends: 261 [2023-12-16 04:31:45,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:31:45,043 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 144 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:31:45,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 765 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:31:45,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-12-16 04:31:45,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 239. [2023-12-16 04:31:45,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 221 states have (on average 1.4615384615384615) internal successors, (323), 221 states have internal predecessors, (323), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-16 04:31:45,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 355 transitions. [2023-12-16 04:31:45,056 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 355 transitions. Word has length 132 [2023-12-16 04:31:45,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:31:45,056 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 355 transitions. [2023-12-16 04:31:45,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:31:45,057 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 355 transitions. [2023-12-16 04:31:45,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-16 04:31:45,058 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:31:45,058 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:31:45,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 04:31:45,059 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:31:45,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:31:45,059 INFO L85 PathProgramCache]: Analyzing trace with hash 405809529, now seen corresponding path program 1 times [2023-12-16 04:31:45,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:31:45,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824816187] [2023-12-16 04:31:45,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:31:45,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:31:45,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:45,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:31:45,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:45,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:31:45,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:45,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:31:45,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:45,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:31:45,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:45,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:31:45,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:45,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:31:45,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:45,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:31:45,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:45,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:31:45,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:45,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-16 04:31:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:45,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 04:31:45,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:45,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-16 04:31:45,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:45,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 04:31:45,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:45,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-16 04:31:45,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:45,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-16 04:31:45,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:45,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-16 04:31:45,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:45,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-16 04:31:45,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:45,630 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:31:45,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:31:45,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824816187] [2023-12-16 04:31:45,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824816187] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:31:45,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:31:45,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 04:31:45,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051631190] [2023-12-16 04:31:45,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:31:45,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:31:45,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:31:45,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:31:45,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:31:45,633 INFO L87 Difference]: Start difference. First operand 239 states and 355 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:31:45,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:31:45,967 INFO L93 Difference]: Finished difference Result 586 states and 868 transitions. [2023-12-16 04:31:45,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 04:31:45,968 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 132 [2023-12-16 04:31:45,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:31:45,970 INFO L225 Difference]: With dead ends: 586 [2023-12-16 04:31:45,970 INFO L226 Difference]: Without dead ends: 348 [2023-12-16 04:31:45,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-16 04:31:45,972 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 449 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:31:45,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 759 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:31:45,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2023-12-16 04:31:45,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 239. [2023-12-16 04:31:45,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 221 states have (on average 1.4570135746606334) internal successors, (322), 221 states have internal predecessors, (322), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-16 04:31:45,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 354 transitions. [2023-12-16 04:31:45,989 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 354 transitions. Word has length 132 [2023-12-16 04:31:45,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:31:45,990 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 354 transitions. [2023-12-16 04:31:45,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:31:45,990 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 354 transitions. [2023-12-16 04:31:45,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-16 04:31:45,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:31:45,991 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:31:45,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 04:31:45,992 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:31:45,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:31:45,992 INFO L85 PathProgramCache]: Analyzing trace with hash 830641165, now seen corresponding path program 1 times [2023-12-16 04:31:45,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:31:45,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715003954] [2023-12-16 04:31:45,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:31:45,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:31:46,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:46,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:31:46,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:46,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:31:46,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:46,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:31:46,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:46,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:31:46,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:46,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:31:46,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:46,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:31:46,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:46,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:31:46,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:46,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:31:46,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:46,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-16 04:31:46,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:46,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 04:31:46,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:46,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-16 04:31:46,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:46,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 04:31:46,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:46,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-16 04:31:46,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:46,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-16 04:31:46,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:46,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-16 04:31:46,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:46,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-16 04:31:46,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:46,592 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:31:46,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:31:46,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715003954] [2023-12-16 04:31:46,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715003954] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:31:46,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:31:46,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 04:31:46,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851117994] [2023-12-16 04:31:46,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:31:46,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:31:46,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:31:46,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:31:46,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:31:46,595 INFO L87 Difference]: Start difference. First operand 239 states and 354 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:31:46,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:31:46,907 INFO L93 Difference]: Finished difference Result 552 states and 816 transitions. [2023-12-16 04:31:46,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 04:31:46,908 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 132 [2023-12-16 04:31:46,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:31:46,909 INFO L225 Difference]: With dead ends: 552 [2023-12-16 04:31:46,909 INFO L226 Difference]: Without dead ends: 314 [2023-12-16 04:31:46,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-16 04:31:46,912 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 355 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:31:46,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 994 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:31:46,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2023-12-16 04:31:46,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 239. [2023-12-16 04:31:46,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 221 states have (on average 1.4524886877828054) internal successors, (321), 221 states have internal predecessors, (321), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-16 04:31:46,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 353 transitions. [2023-12-16 04:31:46,926 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 353 transitions. Word has length 132 [2023-12-16 04:31:46,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:31:46,926 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 353 transitions. [2023-12-16 04:31:46,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:31:46,927 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 353 transitions. [2023-12-16 04:31:46,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-16 04:31:46,928 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:31:46,928 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:31:46,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 04:31:46,928 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:31:46,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:31:46,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1792724532, now seen corresponding path program 1 times [2023-12-16 04:31:46,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:31:46,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593359178] [2023-12-16 04:31:46,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:31:46,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:31:46,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:47,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:31:47,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:47,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:31:47,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:47,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:31:47,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:47,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:31:47,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:47,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:31:47,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:47,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:31:47,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:47,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:31:47,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:47,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:31:47,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:47,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-16 04:31:47,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:47,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 04:31:47,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:47,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-16 04:31:47,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:47,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 04:31:47,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:47,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-16 04:31:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:47,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-16 04:31:47,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:47,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-16 04:31:47,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:47,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-16 04:31:47,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:47,042 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:31:47,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:31:47,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593359178] [2023-12-16 04:31:47,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593359178] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:31:47,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:31:47,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 04:31:47,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207675946] [2023-12-16 04:31:47,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:31:47,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:31:47,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:31:47,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:31:47,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:31:47,046 INFO L87 Difference]: Start difference. First operand 239 states and 353 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:31:47,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:31:47,080 INFO L93 Difference]: Finished difference Result 517 states and 758 transitions. [2023-12-16 04:31:47,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:31:47,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 133 [2023-12-16 04:31:47,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:31:47,082 INFO L225 Difference]: With dead ends: 517 [2023-12-16 04:31:47,082 INFO L226 Difference]: Without dead ends: 279 [2023-12-16 04:31:47,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:31:47,083 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 104 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:31:47,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 492 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:31:47,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2023-12-16 04:31:47,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 227. [2023-12-16 04:31:47,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 209 states have (on average 1.430622009569378) internal successors, (299), 209 states have internal predecessors, (299), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-16 04:31:47,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 331 transitions. [2023-12-16 04:31:47,098 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 331 transitions. Word has length 133 [2023-12-16 04:31:47,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:31:47,098 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 331 transitions. [2023-12-16 04:31:47,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:31:47,099 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 331 transitions. [2023-12-16 04:31:47,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-16 04:31:47,100 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:31:47,100 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:31:47,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 04:31:47,100 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:31:47,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:31:47,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1805969725, now seen corresponding path program 1 times [2023-12-16 04:31:47,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:31:47,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079461991] [2023-12-16 04:31:47,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:31:47,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:31:47,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:48,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:31:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:48,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:31:48,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:48,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:31:48,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:48,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:31:48,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:48,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:31:48,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:49,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:31:49,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:49,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:31:49,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:49,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:31:49,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:49,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-16 04:31:49,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:49,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 04:31:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:49,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-16 04:31:49,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:49,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 04:31:49,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:49,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-16 04:31:49,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:49,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-16 04:31:49,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:49,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-16 04:31:49,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:49,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-16 04:31:49,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:49,097 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:31:49,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:31:49,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079461991] [2023-12-16 04:31:49,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079461991] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:31:49,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:31:49,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 04:31:49,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073179031] [2023-12-16 04:31:49,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:31:49,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 04:31:49,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:31:49,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 04:31:49,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-16 04:31:49,099 INFO L87 Difference]: Start difference. First operand 227 states and 331 transitions. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-16 04:31:49,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:31:49,622 INFO L93 Difference]: Finished difference Result 660 states and 963 transitions. [2023-12-16 04:31:49,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 04:31:49,623 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 134 [2023-12-16 04:31:49,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:31:49,625 INFO L225 Difference]: With dead ends: 660 [2023-12-16 04:31:49,625 INFO L226 Difference]: Without dead ends: 434 [2023-12-16 04:31:49,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2023-12-16 04:31:49,626 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 712 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 04:31:49,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 614 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 04:31:49,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2023-12-16 04:31:49,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 387. [2023-12-16 04:31:49,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 364 states have (on average 1.434065934065934) internal successors, (522), 365 states have internal predecessors, (522), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-16 04:31:49,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 562 transitions. [2023-12-16 04:31:49,647 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 562 transitions. Word has length 134 [2023-12-16 04:31:49,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:31:49,647 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 562 transitions. [2023-12-16 04:31:49,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-16 04:31:49,647 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 562 transitions. [2023-12-16 04:31:49,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-16 04:31:49,649 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:31:49,649 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:31:49,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 04:31:49,649 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:31:49,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:31:49,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1501950759, now seen corresponding path program 1 times [2023-12-16 04:31:49,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:31:49,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029008945] [2023-12-16 04:31:49,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:31:49,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:31:49,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:50,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:31:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:50,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:31:50,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:50,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:31:50,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:50,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:31:50,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:50,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:31:50,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:50,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:31:50,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:50,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:31:50,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:50,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:31:50,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:50,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-16 04:31:50,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:50,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 04:31:50,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:50,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-16 04:31:50,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:50,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 04:31:50,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:50,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-16 04:31:50,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:50,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-16 04:31:50,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:50,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-16 04:31:50,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:50,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-16 04:31:50,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:50,381 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:31:50,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:31:50,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029008945] [2023-12-16 04:31:50,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029008945] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:31:50,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:31:50,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 04:31:50,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155218086] [2023-12-16 04:31:50,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:31:50,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 04:31:50,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:31:50,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 04:31:50,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-16 04:31:50,383 INFO L87 Difference]: Start difference. First operand 387 states and 562 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-16 04:31:50,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:31:50,549 INFO L93 Difference]: Finished difference Result 856 states and 1243 transitions. [2023-12-16 04:31:50,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 04:31:50,549 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 134 [2023-12-16 04:31:50,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:31:50,553 INFO L225 Difference]: With dead ends: 856 [2023-12-16 04:31:50,553 INFO L226 Difference]: Without dead ends: 470 [2023-12-16 04:31:50,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:31:50,554 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 90 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:31:50,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 471 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:31:50,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2023-12-16 04:31:50,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 460. [2023-12-16 04:31:50,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 419 states have (on average 1.4128878281622912) internal successors, (592), 420 states have internal predecessors, (592), 36 states have call successors, (36), 4 states have call predecessors, (36), 4 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-16 04:31:50,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 664 transitions. [2023-12-16 04:31:50,588 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 664 transitions. Word has length 134 [2023-12-16 04:31:50,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:31:50,589 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 664 transitions. [2023-12-16 04:31:50,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-16 04:31:50,589 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 664 transitions. [2023-12-16 04:31:50,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-16 04:31:50,590 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:31:50,590 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:31:50,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 04:31:50,591 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:31:50,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:31:50,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1041523795, now seen corresponding path program 1 times [2023-12-16 04:31:50,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:31:50,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821765496] [2023-12-16 04:31:50,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:31:50,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:31:50,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:52,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:31:52,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:52,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:31:52,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:52,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:31:52,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:52,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:31:52,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:52,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:31:52,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:52,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:31:52,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:52,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:31:52,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:52,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:31:52,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:52,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-16 04:31:52,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:52,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 04:31:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:52,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-16 04:31:52,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:52,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 04:31:52,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:52,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-16 04:31:52,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:52,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-16 04:31:52,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:52,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-16 04:31:52,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:52,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-16 04:31:52,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:52,921 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:31:52,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:31:52,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821765496] [2023-12-16 04:31:52,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821765496] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:31:52,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:31:52,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-12-16 04:31:52,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042309783] [2023-12-16 04:31:52,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:31:52,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-16 04:31:52,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:31:52,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-16 04:31:52,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2023-12-16 04:31:52,923 INFO L87 Difference]: Start difference. First operand 460 states and 664 transitions. Second operand has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-16 04:31:54,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:31:54,548 INFO L93 Difference]: Finished difference Result 1098 states and 1589 transitions. [2023-12-16 04:31:54,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-16 04:31:54,549 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 134 [2023-12-16 04:31:54,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:31:54,552 INFO L225 Difference]: With dead ends: 1098 [2023-12-16 04:31:54,553 INFO L226 Difference]: Without dead ends: 712 [2023-12-16 04:31:54,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=202, Invalid=728, Unknown=0, NotChecked=0, Total=930 [2023-12-16 04:31:54,554 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 1064 mSDsluCounter, 1758 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1064 SdHoareTripleChecker+Valid, 2010 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 04:31:54,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1064 Valid, 2010 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 04:31:54,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2023-12-16 04:31:54,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 570. [2023-12-16 04:31:54,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 529 states have (on average 1.4215500945179584) internal successors, (752), 530 states have internal predecessors, (752), 36 states have call successors, (36), 4 states have call predecessors, (36), 4 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-16 04:31:54,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 824 transitions. [2023-12-16 04:31:54,596 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 824 transitions. Word has length 134 [2023-12-16 04:31:54,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:31:54,596 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 824 transitions. [2023-12-16 04:31:54,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-16 04:31:54,597 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 824 transitions. [2023-12-16 04:31:54,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-16 04:31:54,599 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:31:54,599 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:31:54,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 04:31:54,599 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:31:54,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:31:54,600 INFO L85 PathProgramCache]: Analyzing trace with hash 648496785, now seen corresponding path program 1 times [2023-12-16 04:31:54,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:31:54,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349548176] [2023-12-16 04:31:54,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:31:54,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:31:54,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:54,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:31:54,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:54,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:31:54,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:54,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:31:54,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:54,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:31:54,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:54,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:31:54,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:54,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:31:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:54,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:31:54,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:54,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:31:54,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:54,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-16 04:31:54,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:54,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 04:31:54,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:54,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-16 04:31:54,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:54,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 04:31:54,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:54,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-16 04:31:54,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:55,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-16 04:31:55,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:55,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-16 04:31:55,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:55,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-16 04:31:55,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:55,010 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:31:55,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:31:55,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349548176] [2023-12-16 04:31:55,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349548176] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:31:55,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:31:55,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 04:31:55,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072281450] [2023-12-16 04:31:55,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:31:55,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:31:55,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:31:55,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:31:55,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:31:55,012 INFO L87 Difference]: Start difference. First operand 570 states and 824 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:31:55,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:31:55,271 INFO L93 Difference]: Finished difference Result 1208 states and 1747 transitions. [2023-12-16 04:31:55,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 04:31:55,272 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 134 [2023-12-16 04:31:55,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:31:55,275 INFO L225 Difference]: With dead ends: 1208 [2023-12-16 04:31:55,275 INFO L226 Difference]: Without dead ends: 712 [2023-12-16 04:31:55,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-16 04:31:55,277 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 404 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:31:55,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 905 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 04:31:55,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2023-12-16 04:31:55,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 570. [2023-12-16 04:31:55,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 529 states have (on average 1.4177693761814745) internal successors, (750), 530 states have internal predecessors, (750), 36 states have call successors, (36), 4 states have call predecessors, (36), 4 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-16 04:31:55,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 822 transitions. [2023-12-16 04:31:55,324 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 822 transitions. Word has length 134 [2023-12-16 04:31:55,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:31:55,325 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 822 transitions. [2023-12-16 04:31:55,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:31:55,325 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 822 transitions. [2023-12-16 04:31:55,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-16 04:31:55,326 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:31:55,327 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:31:55,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 04:31:55,327 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:31:55,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:31:55,327 INFO L85 PathProgramCache]: Analyzing trace with hash -647419947, now seen corresponding path program 1 times [2023-12-16 04:31:55,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:31:55,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132952283] [2023-12-16 04:31:55,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:31:55,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:31:55,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:55,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:31:55,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:55,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:31:55,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:55,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:31:55,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:55,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:31:55,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:55,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:31:55,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:55,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:31:55,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:55,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:31:55,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:55,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:31:55,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:55,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-16 04:31:55,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:55,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 04:31:55,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:55,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-16 04:31:55,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:55,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 04:31:55,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:55,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-16 04:31:55,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:55,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-16 04:31:55,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:55,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-16 04:31:55,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:55,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-16 04:31:55,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:55,716 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:31:55,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:31:55,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132952283] [2023-12-16 04:31:55,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132952283] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:31:55,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:31:55,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 04:31:55,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721859324] [2023-12-16 04:31:55,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:31:55,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:31:55,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:31:55,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:31:55,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:31:55,718 INFO L87 Difference]: Start difference. First operand 570 states and 822 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:31:55,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:31:55,985 INFO L93 Difference]: Finished difference Result 1133 states and 1637 transitions. [2023-12-16 04:31:55,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 04:31:55,986 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 134 [2023-12-16 04:31:55,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:31:55,989 INFO L225 Difference]: With dead ends: 1133 [2023-12-16 04:31:55,989 INFO L226 Difference]: Without dead ends: 637 [2023-12-16 04:31:55,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-16 04:31:55,991 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 293 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:31:55,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 906 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 04:31:55,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2023-12-16 04:31:56,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 570. [2023-12-16 04:31:56,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 529 states have (on average 1.4139886578449905) internal successors, (748), 530 states have internal predecessors, (748), 36 states have call successors, (36), 4 states have call predecessors, (36), 4 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-16 04:31:56,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 820 transitions. [2023-12-16 04:31:56,029 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 820 transitions. Word has length 134 [2023-12-16 04:31:56,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:31:56,029 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 820 transitions. [2023-12-16 04:31:56,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 04:31:56,029 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 820 transitions. [2023-12-16 04:31:56,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-16 04:31:56,031 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:31:56,031 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:31:56,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 04:31:56,031 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:31:56,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:31:56,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1040446957, now seen corresponding path program 1 times [2023-12-16 04:31:56,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:31:56,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886040131] [2023-12-16 04:31:56,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:31:56,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:31:56,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:58,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:31:58,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:58,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:31:58,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:58,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:31:58,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:58,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:31:58,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:58,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:31:58,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:58,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:31:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:58,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:31:58,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:58,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:31:58,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:58,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-16 04:31:58,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:58,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 04:31:58,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:58,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-16 04:31:58,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:58,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 04:31:58,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:58,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-16 04:31:58,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:58,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-16 04:31:58,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:58,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-16 04:31:58,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:58,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-16 04:31:58,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:31:58,375 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:31:58,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:31:58,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886040131] [2023-12-16 04:31:58,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886040131] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:31:58,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:31:58,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-12-16 04:31:58,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433010344] [2023-12-16 04:31:58,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:31:58,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-16 04:31:58,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:31:58,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-16 04:31:58,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2023-12-16 04:31:58,379 INFO L87 Difference]: Start difference. First operand 570 states and 820 transitions. Second operand has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-16 04:31:59,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:31:59,777 INFO L93 Difference]: Finished difference Result 1131 states and 1630 transitions. [2023-12-16 04:31:59,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-16 04:31:59,778 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 134 [2023-12-16 04:31:59,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:31:59,780 INFO L225 Difference]: With dead ends: 1131 [2023-12-16 04:31:59,780 INFO L226 Difference]: Without dead ends: 635 [2023-12-16 04:31:59,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=176, Invalid=636, Unknown=0, NotChecked=0, Total=812 [2023-12-16 04:31:59,784 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 806 mSDsluCounter, 1751 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 2005 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 04:31:59,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 2005 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 04:31:59,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2023-12-16 04:31:59,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 560. [2023-12-16 04:31:59,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 519 states have (on average 1.416184971098266) internal successors, (735), 520 states have internal predecessors, (735), 36 states have call successors, (36), 4 states have call predecessors, (36), 4 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-16 04:31:59,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 807 transitions. [2023-12-16 04:31:59,815 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 807 transitions. Word has length 134 [2023-12-16 04:31:59,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:31:59,815 INFO L495 AbstractCegarLoop]: Abstraction has 560 states and 807 transitions. [2023-12-16 04:31:59,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-16 04:31:59,815 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 807 transitions. [2023-12-16 04:31:59,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-16 04:31:59,817 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:31:59,817 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:31:59,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 04:31:59,817 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:31:59,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:31:59,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1463793711, now seen corresponding path program 1 times [2023-12-16 04:31:59,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:31:59,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116133833] [2023-12-16 04:31:59,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:31:59,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:31:59,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:01,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:32:01,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:01,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:32:01,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:01,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:32:01,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:01,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:32:01,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:01,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:32:01,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:01,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:32:01,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:01,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:32:01,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:01,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:32:01,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:01,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-16 04:32:01,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:01,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 04:32:01,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:01,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-16 04:32:01,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:01,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 04:32:01,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:01,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-16 04:32:01,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:01,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-16 04:32:01,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:01,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-16 04:32:01,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:01,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-16 04:32:01,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:01,756 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:32:01,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:32:01,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116133833] [2023-12-16 04:32:01,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116133833] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:32:01,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:32:01,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-12-16 04:32:01,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208541019] [2023-12-16 04:32:01,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:32:01,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-16 04:32:01,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:32:01,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-16 04:32:01,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2023-12-16 04:32:01,758 INFO L87 Difference]: Start difference. First operand 560 states and 807 transitions. Second operand has 15 states, 14 states have (on average 4.142857142857143) internal successors, (58), 15 states have internal predecessors, (58), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-16 04:32:03,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:32:03,219 INFO L93 Difference]: Finished difference Result 1226 states and 1773 transitions. [2023-12-16 04:32:03,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-16 04:32:03,219 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.142857142857143) internal successors, (58), 15 states have internal predecessors, (58), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 135 [2023-12-16 04:32:03,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:32:03,222 INFO L225 Difference]: With dead ends: 1226 [2023-12-16 04:32:03,222 INFO L226 Difference]: Without dead ends: 740 [2023-12-16 04:32:03,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=283, Invalid=709, Unknown=0, NotChecked=0, Total=992 [2023-12-16 04:32:03,224 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 1304 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1305 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 04:32:03,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1305 Valid, 1423 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 04:32:03,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2023-12-16 04:32:03,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 662. [2023-12-16 04:32:03,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 618 states have (on average 1.419093851132686) internal successors, (877), 620 states have internal predecessors, (877), 38 states have call successors, (38), 5 states have call predecessors, (38), 5 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-16 04:32:03,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 953 transitions. [2023-12-16 04:32:03,266 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 953 transitions. Word has length 135 [2023-12-16 04:32:03,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:32:03,267 INFO L495 AbstractCegarLoop]: Abstraction has 662 states and 953 transitions. [2023-12-16 04:32:03,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.142857142857143) internal successors, (58), 15 states have internal predecessors, (58), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-16 04:32:03,267 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 953 transitions. [2023-12-16 04:32:03,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-16 04:32:03,268 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:32:03,268 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:32:03,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-16 04:32:03,269 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:32:03,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:32:03,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1159774745, now seen corresponding path program 1 times [2023-12-16 04:32:03,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:32:03,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112073448] [2023-12-16 04:32:03,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:32:03,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:32:03,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:05,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:32:05,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:05,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:32:05,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:05,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:32:05,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:05,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:32:05,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:05,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:32:05,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:05,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:32:05,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:05,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:32:05,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:05,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:32:05,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:05,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-16 04:32:05,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:05,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 04:32:05,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:05,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-16 04:32:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:05,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 04:32:05,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:05,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-16 04:32:05,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:05,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-16 04:32:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:05,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-16 04:32:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:05,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-16 04:32:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:05,379 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 04:32:05,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:32:05,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112073448] [2023-12-16 04:32:05,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112073448] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:32:05,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:32:05,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-16 04:32:05,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091405011] [2023-12-16 04:32:05,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:32:05,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 04:32:05,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:32:05,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 04:32:05,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-12-16 04:32:05,381 INFO L87 Difference]: Start difference. First operand 662 states and 953 transitions. Second operand has 10 states, 9 states have (on average 6.444444444444445) internal successors, (58), 10 states have internal predecessors, (58), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-16 04:32:06,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:32:06,030 INFO L93 Difference]: Finished difference Result 1254 states and 1805 transitions. [2023-12-16 04:32:06,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 04:32:06,031 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.444444444444445) internal successors, (58), 10 states have internal predecessors, (58), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 135 [2023-12-16 04:32:06,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:32:06,033 INFO L225 Difference]: With dead ends: 1254 [2023-12-16 04:32:06,033 INFO L226 Difference]: Without dead ends: 666 [2023-12-16 04:32:06,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-12-16 04:32:06,034 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 396 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 04:32:06,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 828 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 04:32:06,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2023-12-16 04:32:06,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 627. [2023-12-16 04:32:06,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 587 states have (on average 1.415672913117547) internal successors, (831), 588 states have internal predecessors, (831), 34 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-16 04:32:06,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 899 transitions. [2023-12-16 04:32:06,072 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 899 transitions. Word has length 135 [2023-12-16 04:32:06,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:32:06,072 INFO L495 AbstractCegarLoop]: Abstraction has 627 states and 899 transitions. [2023-12-16 04:32:06,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.444444444444445) internal successors, (58), 10 states have internal predecessors, (58), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-16 04:32:06,072 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 899 transitions. [2023-12-16 04:32:06,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-16 04:32:06,074 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:32:06,074 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:32:06,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-16 04:32:06,074 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:32:06,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:32:06,075 INFO L85 PathProgramCache]: Analyzing trace with hash -388323006, now seen corresponding path program 1 times [2023-12-16 04:32:06,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:32:06,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123158172] [2023-12-16 04:32:06,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:32:06,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:32:06,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:06,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:32:06,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:06,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:32:06,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:06,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:32:06,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:06,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:32:06,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:06,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:32:06,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:06,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:32:06,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:07,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:32:07,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:07,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:32:07,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:07,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-16 04:32:07,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:07,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 04:32:07,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:07,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-16 04:32:07,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:07,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 04:32:07,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:07,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-16 04:32:07,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:07,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-16 04:32:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:07,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-16 04:32:07,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:07,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-16 04:32:07,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:07,029 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 9 proven. 36 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-12-16 04:32:07,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:32:07,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123158172] [2023-12-16 04:32:07,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123158172] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:32:07,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836557205] [2023-12-16 04:32:07,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:32:07,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:32:07,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:32:07,032 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:32:07,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 04:32:07,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:32:07,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 69 conjunts are in the unsatisfiable core [2023-12-16 04:32:07,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:32:07,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-16 04:32:08,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-16 04:32:08,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-16 04:32:08,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-16 04:32:09,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-16 04:32:09,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-16 04:32:09,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-16 04:32:10,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-16 04:32:10,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-16 04:32:10,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 04:32:10,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-16 04:32:10,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 04:32:10,702 INFO L349 Elim1Store]: treesize reduction 60, result has 41.7 percent of original size [2023-12-16 04:32:10,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 31 treesize of output 64 [2023-12-16 04:32:10,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 04:32:10,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-16 04:32:11,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 04:32:11,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 65 [2023-12-16 04:32:11,138 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 152 proven. 93 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-12-16 04:32:11,138 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-16 04:32:27,803 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 04:32:27,813 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 04:32:28,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 04:32:29,017 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-16 04:32:29,027 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 04:32:29,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-16 04:32:29,028 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 138 with TraceHistMax 16,while TraceCheckSpWp was constructing backward predicates,while executing Executor. [2023-12-16 04:32:29,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 [2023-12-16 04:32:29,033 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:32:29,036 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 04:32:29,038 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 04:32:29 BoogieIcfgContainer [2023-12-16 04:32:29,038 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 04:32:29,039 INFO L158 Benchmark]: Toolchain (without parser) took 51475.51ms. Allocated memory was 225.4MB in the beginning and 715.1MB in the end (delta: 489.7MB). Free memory was 176.0MB in the beginning and 586.0MB in the end (delta: -410.0MB). Peak memory consumption was 80.4MB. Max. memory is 8.0GB. [2023-12-16 04:32:29,039 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 187.7MB. Free memory was 141.6MB in the beginning and 141.5MB in the end (delta: 155.3kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 04:32:29,039 INFO L158 Benchmark]: CACSL2BoogieTranslator took 300.45ms. Allocated memory is still 225.4MB. Free memory was 175.7MB in the beginning and 159.2MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-16 04:32:29,041 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.29ms. Allocated memory is still 225.4MB. Free memory was 159.2MB in the beginning and 155.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-16 04:32:29,041 INFO L158 Benchmark]: Boogie Preprocessor took 98.55ms. Allocated memory is still 225.4MB. Free memory was 155.0MB in the beginning and 150.2MB in the end (delta: 4.8MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-16 04:32:29,043 INFO L158 Benchmark]: RCFGBuilder took 742.75ms. Allocated memory is still 225.4MB. Free memory was 150.2MB in the beginning and 189.5MB in the end (delta: -39.3MB). Peak memory consumption was 41.8MB. Max. memory is 8.0GB. [2023-12-16 04:32:29,046 INFO L158 Benchmark]: TraceAbstraction took 50271.11ms. Allocated memory was 225.4MB in the beginning and 715.1MB in the end (delta: 489.7MB). Free memory was 189.0MB in the beginning and 586.0MB in the end (delta: -397.1MB). Peak memory consumption was 92.1MB. Max. memory is 8.0GB. [2023-12-16 04:32:29,051 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 187.7MB. Free memory was 141.6MB in the beginning and 141.5MB in the end (delta: 155.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 300.45ms. Allocated memory is still 225.4MB. Free memory was 175.7MB in the beginning and 159.2MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 57.29ms. Allocated memory is still 225.4MB. Free memory was 159.2MB in the beginning and 155.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 98.55ms. Allocated memory is still 225.4MB. Free memory was 155.0MB in the beginning and 150.2MB in the end (delta: 4.8MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 742.75ms. Allocated memory is still 225.4MB. Free memory was 150.2MB in the beginning and 189.5MB in the end (delta: -39.3MB). Peak memory consumption was 41.8MB. Max. memory is 8.0GB. * TraceAbstraction took 50271.11ms. Allocated memory was 225.4MB in the beginning and 715.1MB in the end (delta: 489.7MB). Free memory was 189.0MB in the beginning and 586.0MB in the end (delta: -397.1MB). Peak memory consumption was 92.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 138 with TraceHistMax 16,while TraceCheckSpWp was constructing backward predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 142 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 50.2s, OverallIterations: 19, TraceHistogramMax: 16, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 8.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7223 SdHoareTripleChecker+Valid, 4.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7220 mSDsluCounter, 16015 SdHoareTripleChecker+Invalid, 3.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12034 mSDsCounter, 238 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5877 IncrementalHoareTripleChecker+Invalid, 6115 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 238 mSolverCounterUnsat, 3981 mSDtfsCounter, 5877 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 861 GetRequests, 680 SyntacticMatches, 5 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=662occurred in iteration=17, InterpolantAutomatonStates: 146, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 18 MinimizatonAttempts, 1096 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 17.1s InterpolantComputationTime, 2378 NumberOfCodeBlocks, 2378 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 2360 ConstructedInterpolants, 0 QuantifiedInterpolants, 20592 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 8640/8640 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown