/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/Problem05_label41+token_ring.11.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-18 22:07:49,876 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-18 22:07:49,941 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-18 22:07:49,945 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-18 22:07:49,945 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-18 22:07:49,965 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-18 22:07:49,966 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-18 22:07:49,966 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-18 22:07:49,967 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-18 22:07:49,969 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-18 22:07:49,969 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-18 22:07:49,970 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-18 22:07:49,970 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-18 22:07:49,971 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-18 22:07:49,971 INFO L153 SettingsManager]: * Use SBE=true [2023-12-18 22:07:49,971 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-18 22:07:49,971 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-18 22:07:49,971 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-18 22:07:49,971 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-18 22:07:49,972 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-18 22:07:49,972 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-18 22:07:49,984 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-18 22:07:49,984 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-18 22:07:49,984 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-18 22:07:49,984 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-18 22:07:49,984 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-18 22:07:49,985 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-18 22:07:49,985 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-18 22:07:49,985 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-18 22:07:49,985 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-18 22:07:49,986 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-18 22:07:49,986 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-18 22:07:49,986 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 22:07:49,986 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-18 22:07:49,986 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-18 22:07:49,986 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-18 22:07:49,987 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-18 22:07:49,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-18 22:07:49,987 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-18 22:07:49,987 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-18 22:07:49,987 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-18 22:07:49,987 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-18 22:07:49,987 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-18 22:07:49,987 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-18 22:07:50,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-18 22:07:50,185 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-18 22:07:50,187 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-18 22:07:50,188 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-18 22:07:50,188 INFO L274 PluginConnector]: CDTParser initialized [2023-12-18 22:07:50,189 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label41+token_ring.11.cil-2.c [2023-12-18 22:07:51,187 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-18 22:07:51,712 INFO L384 CDTParser]: Found 1 translation units. [2023-12-18 22:07:51,713 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label41+token_ring.11.cil-2.c [2023-12-18 22:07:51,754 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f91fc4fd/29696b035f254911a512b5c616409589/FLAGa468b83df [2023-12-18 22:07:51,765 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f91fc4fd/29696b035f254911a512b5c616409589 [2023-12-18 22:07:51,767 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-18 22:07:51,767 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-18 22:07:51,769 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-18 22:07:51,769 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-18 22:07:51,783 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-18 22:07:51,783 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:07:51" (1/1) ... [2023-12-18 22:07:51,784 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ef3d48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:07:51, skipping insertion in model container [2023-12-18 22:07:51,784 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:07:51" (1/1) ... [2023-12-18 22:07:51,991 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-18 22:07:53,096 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label41+token_ring.11.cil-2.c[376251,376264] [2023-12-18 22:07:53,134 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label41+token_ring.11.cil-2.c[383339,383352] [2023-12-18 22:07:53,329 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 22:07:53,339 INFO L202 MainTranslator]: Completed pre-run [2023-12-18 22:07:53,850 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label41+token_ring.11.cil-2.c[376251,376264] [2023-12-18 22:07:53,856 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label41+token_ring.11.cil-2.c[383339,383352] [2023-12-18 22:07:53,898 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 22:07:53,939 INFO L206 MainTranslator]: Completed translation [2023-12-18 22:07:53,940 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:07:53 WrapperNode [2023-12-18 22:07:53,940 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-18 22:07:53,941 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-18 22:07:53,941 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-18 22:07:53,941 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-18 22:07:53,945 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:07:53" (1/1) ... [2023-12-18 22:07:54,023 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:07:53" (1/1) ... [2023-12-18 22:07:54,263 INFO L138 Inliner]: procedures = 66, calls = 74, calls flagged for inlining = 44, calls inlined = 44, statements flattened = 13173 [2023-12-18 22:07:54,263 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-18 22:07:54,264 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-18 22:07:54,264 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-18 22:07:54,264 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-18 22:07:54,271 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:07:53" (1/1) ... [2023-12-18 22:07:54,272 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:07:53" (1/1) ... [2023-12-18 22:07:54,309 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:07:53" (1/1) ... [2023-12-18 22:07:54,386 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-18 22:07:54,386 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:07:53" (1/1) ... [2023-12-18 22:07:54,386 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:07:53" (1/1) ... [2023-12-18 22:07:54,608 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:07:53" (1/1) ... [2023-12-18 22:07:54,642 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:07:53" (1/1) ... [2023-12-18 22:07:54,664 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:07:53" (1/1) ... [2023-12-18 22:07:54,683 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:07:53" (1/1) ... [2023-12-18 22:07:54,723 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-18 22:07:54,724 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-18 22:07:54,725 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-18 22:07:54,725 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-18 22:07:54,726 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:07:53" (1/1) ... [2023-12-18 22:07:54,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 22:07:54,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:07:54,756 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-18 22:07:54,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-18 22:07:54,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-18 22:07:54,838 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-18 22:07:54,838 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-18 22:07:54,838 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-18 22:07:54,838 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-18 22:07:54,838 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-18 22:07:54,838 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-18 22:07:54,838 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-18 22:07:54,839 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-18 22:07:54,839 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-18 22:07:54,839 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-18 22:07:54,839 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-18 22:07:54,839 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-18 22:07:54,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-18 22:07:54,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-18 22:07:54,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-18 22:07:54,935 INFO L241 CfgBuilder]: Building ICFG [2023-12-18 22:07:54,937 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-18 22:08:00,338 INFO L282 CfgBuilder]: Performing block encoding [2023-12-18 22:08:00,424 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-18 22:08:00,424 INFO L309 CfgBuilder]: Removed 15 assume(true) statements. [2023-12-18 22:08:00,425 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:08:00 BoogieIcfgContainer [2023-12-18 22:08:00,425 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-18 22:08:00,426 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-18 22:08:00,426 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-18 22:08:00,428 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-18 22:08:00,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 10:07:51" (1/3) ... [2023-12-18 22:08:00,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51907aa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:08:00, skipping insertion in model container [2023-12-18 22:08:00,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:07:53" (2/3) ... [2023-12-18 22:08:00,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51907aa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:08:00, skipping insertion in model container [2023-12-18 22:08:00,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:08:00" (3/3) ... [2023-12-18 22:08:00,430 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label41+token_ring.11.cil-2.c [2023-12-18 22:08:00,442 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-18 22:08:00,442 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-18 22:08:00,496 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-18 22:08:00,500 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;@b68dde2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-18 22:08:00,501 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-18 22:08:00,509 INFO L276 IsEmpty]: Start isEmpty. Operand has 2448 states, 2414 states have (on average 1.876553438276719) internal successors, (4530), 2417 states have internal predecessors, (4530), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-18 22:08:00,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-18 22:08:00,522 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:08:00,523 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:08:00,523 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:08:00,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:08:00,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1361111705, now seen corresponding path program 1 times [2023-12-18 22:08:00,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:08:00,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632206606] [2023-12-18 22:08:00,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:08:00,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:08:00,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:00,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:08:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:00,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:08:00,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:00,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-18 22:08:00,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:01,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-18 22:08:01,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:01,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-18 22:08:01,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:01,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:08:01,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:08:01,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632206606] [2023-12-18 22:08:01,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632206606] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:08:01,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:08:01,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-18 22:08:01,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109345852] [2023-12-18 22:08:01,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:08:01,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 22:08:01,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:08:01,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 22:08:01,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-18 22:08:01,148 INFO L87 Difference]: Start difference. First operand has 2448 states, 2414 states have (on average 1.876553438276719) internal successors, (4530), 2417 states have internal predecessors, (4530), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:08:02,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:08:02,672 INFO L93 Difference]: Finished difference Result 5006 states and 9354 transitions. [2023-12-18 22:08:02,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 22:08:02,674 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-12-18 22:08:02,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:08:02,698 INFO L225 Difference]: With dead ends: 5006 [2023-12-18 22:08:02,698 INFO L226 Difference]: Without dead ends: 2564 [2023-12-18 22:08:02,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-18 22:08:02,710 INFO L413 NwaCegarLoop]: 4238 mSDtfsCounter, 902 mSDsluCounter, 12182 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 925 SdHoareTripleChecker+Valid, 16420 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-18 22:08:02,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [925 Valid, 16420 Invalid, 1046 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-18 22:08:02,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2564 states. [2023-12-18 22:08:02,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2564 to 2444. [2023-12-18 22:08:02,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2444 states, 2411 states have (on average 1.838241393612609) internal successors, (4432), 2413 states have internal predecessors, (4432), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-18 22:08:02,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2444 states to 2444 states and 4482 transitions. [2023-12-18 22:08:02,821 INFO L78 Accepts]: Start accepts. Automaton has 2444 states and 4482 transitions. Word has length 151 [2023-12-18 22:08:02,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:08:02,821 INFO L495 AbstractCegarLoop]: Abstraction has 2444 states and 4482 transitions. [2023-12-18 22:08:02,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:08:02,821 INFO L276 IsEmpty]: Start isEmpty. Operand 2444 states and 4482 transitions. [2023-12-18 22:08:02,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-18 22:08:02,829 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:08:02,829 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:08:02,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-18 22:08:02,829 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:08:02,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:08:02,830 INFO L85 PathProgramCache]: Analyzing trace with hash 774771497, now seen corresponding path program 1 times [2023-12-18 22:08:02,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:08:02,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364543538] [2023-12-18 22:08:02,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:08:02,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:08:02,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:02,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:08:02,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:02,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:08:02,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:03,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-18 22:08:03,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:03,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-18 22:08:03,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:03,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-18 22:08:03,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:03,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:08:03,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:08:03,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364543538] [2023-12-18 22:08:03,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364543538] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:08:03,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:08:03,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-18 22:08:03,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38891321] [2023-12-18 22:08:03,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:08:03,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-18 22:08:03,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:08:03,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-18 22:08:03,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-18 22:08:03,077 INFO L87 Difference]: Start difference. First operand 2444 states and 4482 transitions. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:08:05,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:08:05,338 INFO L93 Difference]: Finished difference Result 3313 states and 5934 transitions. [2023-12-18 22:08:05,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-18 22:08:05,338 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-12-18 22:08:05,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:08:05,348 INFO L225 Difference]: With dead ends: 3313 [2023-12-18 22:08:05,348 INFO L226 Difference]: Without dead ends: 3007 [2023-12-18 22:08:05,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-18 22:08:05,350 INFO L413 NwaCegarLoop]: 4252 mSDtfsCounter, 5325 mSDsluCounter, 12699 mSDsCounter, 0 mSdLazyCounter, 2175 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5343 SdHoareTripleChecker+Valid, 16951 SdHoareTripleChecker+Invalid, 2279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 2175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-18 22:08:05,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5343 Valid, 16951 Invalid, 2279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 2175 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-18 22:08:05,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3007 states. [2023-12-18 22:08:05,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3007 to 2768. [2023-12-18 22:08:05,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2768 states, 2708 states have (on average 1.8172082717872968) internal successors, (4921), 2711 states have internal predecessors, (4921), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (48), 45 states have call predecessors, (48), 45 states have call successors, (48) [2023-12-18 22:08:05,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2768 states to 2768 states and 5014 transitions. [2023-12-18 22:08:05,416 INFO L78 Accepts]: Start accepts. Automaton has 2768 states and 5014 transitions. Word has length 151 [2023-12-18 22:08:05,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:08:05,416 INFO L495 AbstractCegarLoop]: Abstraction has 2768 states and 5014 transitions. [2023-12-18 22:08:05,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:08:05,417 INFO L276 IsEmpty]: Start isEmpty. Operand 2768 states and 5014 transitions. [2023-12-18 22:08:05,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-18 22:08:05,418 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:08:05,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:08:05,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-18 22:08:05,419 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:08:05,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:08:05,420 INFO L85 PathProgramCache]: Analyzing trace with hash 653545645, now seen corresponding path program 1 times [2023-12-18 22:08:05,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:08:05,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224834207] [2023-12-18 22:08:05,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:08:05,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:08:05,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:05,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:08:05,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:05,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:08:05,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:05,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-18 22:08:05,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:05,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-18 22:08:05,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:05,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-18 22:08:05,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:05,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:08:05,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:08:05,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224834207] [2023-12-18 22:08:05,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224834207] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:08:05,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:08:05,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:08:05,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457889900] [2023-12-18 22:08:05,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:08:05,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:08:05,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:08:05,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:08:05,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:08:05,685 INFO L87 Difference]: Start difference. First operand 2768 states and 5014 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:08:08,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:08:08,855 INFO L93 Difference]: Finished difference Result 4098 states and 7236 transitions. [2023-12-18 22:08:08,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 22:08:08,856 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-12-18 22:08:08,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:08:08,868 INFO L225 Difference]: With dead ends: 4098 [2023-12-18 22:08:08,868 INFO L226 Difference]: Without dead ends: 3468 [2023-12-18 22:08:08,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-18 22:08:08,875 INFO L413 NwaCegarLoop]: 4390 mSDtfsCounter, 5356 mSDsluCounter, 17256 mSDsCounter, 0 mSdLazyCounter, 3461 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5374 SdHoareTripleChecker+Valid, 21646 SdHoareTripleChecker+Invalid, 3520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 3461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-18 22:08:08,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5374 Valid, 21646 Invalid, 3520 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 3461 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-18 22:08:08,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3468 states. [2023-12-18 22:08:08,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3468 to 3067. [2023-12-18 22:08:08,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3067 states, 2980 states have (on average 1.7986577181208054) internal successors, (5360), 2984 states have internal predecessors, (5360), 65 states have call successors, (65), 18 states have call predecessors, (65), 20 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2023-12-18 22:08:08,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3067 states to 3067 states and 5495 transitions. [2023-12-18 22:08:08,950 INFO L78 Accepts]: Start accepts. Automaton has 3067 states and 5495 transitions. Word has length 151 [2023-12-18 22:08:08,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:08:08,950 INFO L495 AbstractCegarLoop]: Abstraction has 3067 states and 5495 transitions. [2023-12-18 22:08:08,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:08:08,951 INFO L276 IsEmpty]: Start isEmpty. Operand 3067 states and 5495 transitions. [2023-12-18 22:08:08,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-18 22:08:08,952 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:08:08,952 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:08:08,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-18 22:08:08,953 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:08:08,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:08:08,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1328705771, now seen corresponding path program 1 times [2023-12-18 22:08:08,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:08:08,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840929586] [2023-12-18 22:08:08,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:08:08,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:08:08,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:09,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:08:09,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:09,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:08:09,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:09,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-18 22:08:09,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:09,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-18 22:08:09,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:09,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-18 22:08:09,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:09,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:08:09,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:08:09,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840929586] [2023-12-18 22:08:09,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840929586] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:08:09,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:08:09,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:08:09,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253591945] [2023-12-18 22:08:09,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:08:09,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:08:09,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:08:09,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:08:09,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:08:09,178 INFO L87 Difference]: Start difference. First operand 3067 states and 5495 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:08:12,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:08:12,336 INFO L93 Difference]: Finished difference Result 5248 states and 9131 transitions. [2023-12-18 22:08:12,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 22:08:12,336 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-12-18 22:08:12,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:08:12,353 INFO L225 Difference]: With dead ends: 5248 [2023-12-18 22:08:12,353 INFO L226 Difference]: Without dead ends: 4319 [2023-12-18 22:08:12,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-18 22:08:12,362 INFO L413 NwaCegarLoop]: 4388 mSDtfsCounter, 5354 mSDsluCounter, 17256 mSDsCounter, 0 mSdLazyCounter, 3457 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5372 SdHoareTripleChecker+Valid, 21644 SdHoareTripleChecker+Invalid, 3518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 3457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-18 22:08:12,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5372 Valid, 21644 Invalid, 3518 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [61 Valid, 3457 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-18 22:08:12,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4319 states. [2023-12-18 22:08:12,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4319 to 3666. [2023-12-18 22:08:12,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3666 states, 3525 states have (on average 1.7699290780141843) internal successors, (6239), 3531 states have internal predecessors, (6239), 105 states have call successors, (105), 30 states have call predecessors, (105), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2023-12-18 22:08:12,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3666 states to 3666 states and 6462 transitions. [2023-12-18 22:08:12,499 INFO L78 Accepts]: Start accepts. Automaton has 3666 states and 6462 transitions. Word has length 151 [2023-12-18 22:08:12,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:08:12,500 INFO L495 AbstractCegarLoop]: Abstraction has 3666 states and 6462 transitions. [2023-12-18 22:08:12,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:08:12,500 INFO L276 IsEmpty]: Start isEmpty. Operand 3666 states and 6462 transitions. [2023-12-18 22:08:12,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-18 22:08:12,502 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:08:12,502 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:08:12,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-18 22:08:12,502 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:08:12,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:08:12,502 INFO L85 PathProgramCache]: Analyzing trace with hash 380653805, now seen corresponding path program 1 times [2023-12-18 22:08:12,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:08:12,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846755253] [2023-12-18 22:08:12,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:08:12,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:08:12,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:12,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:08:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:12,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:08:12,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:12,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-18 22:08:12,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:12,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-18 22:08:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:12,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-18 22:08:12,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:12,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:08:12,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:08:12,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846755253] [2023-12-18 22:08:12,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846755253] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:08:12,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:08:12,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:08:12,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023962538] [2023-12-18 22:08:12,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:08:12,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:08:12,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:08:12,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:08:12,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:08:12,710 INFO L87 Difference]: Start difference. First operand 3666 states and 6462 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:08:14,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:08:14,304 INFO L93 Difference]: Finished difference Result 5837 states and 10091 transitions. [2023-12-18 22:08:14,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-18 22:08:14,304 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-12-18 22:08:14,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:08:14,317 INFO L225 Difference]: With dead ends: 5837 [2023-12-18 22:08:14,317 INFO L226 Difference]: Without dead ends: 4309 [2023-12-18 22:08:14,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-18 22:08:14,322 INFO L413 NwaCegarLoop]: 4192 mSDtfsCounter, 4957 mSDsluCounter, 16550 mSDsCounter, 0 mSdLazyCounter, 1769 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4976 SdHoareTripleChecker+Valid, 20742 SdHoareTripleChecker+Invalid, 1832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-18 22:08:14,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4976 Valid, 20742 Invalid, 1832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1769 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-18 22:08:14,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4309 states. [2023-12-18 22:08:14,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4309 to 3666. [2023-12-18 22:08:14,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3666 states, 3525 states have (on average 1.7685106382978724) internal successors, (6234), 3531 states have internal predecessors, (6234), 105 states have call successors, (105), 30 states have call predecessors, (105), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2023-12-18 22:08:14,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3666 states to 3666 states and 6457 transitions. [2023-12-18 22:08:14,400 INFO L78 Accepts]: Start accepts. Automaton has 3666 states and 6457 transitions. Word has length 151 [2023-12-18 22:08:14,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:08:14,400 INFO L495 AbstractCegarLoop]: Abstraction has 3666 states and 6457 transitions. [2023-12-18 22:08:14,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:08:14,400 INFO L276 IsEmpty]: Start isEmpty. Operand 3666 states and 6457 transitions. [2023-12-18 22:08:14,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-18 22:08:14,401 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:08:14,402 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:08:14,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-18 22:08:14,402 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:08:14,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:08:14,402 INFO L85 PathProgramCache]: Analyzing trace with hash -204117845, now seen corresponding path program 1 times [2023-12-18 22:08:14,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:08:14,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238454961] [2023-12-18 22:08:14,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:08:14,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:08:14,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:14,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:08:14,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:14,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:08:14,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:14,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-18 22:08:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:14,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-18 22:08:14,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:14,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-18 22:08:14,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:14,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:08:14,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:08:14,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238454961] [2023-12-18 22:08:14,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238454961] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:08:14,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:08:14,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:08:14,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119099483] [2023-12-18 22:08:14,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:08:14,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:08:14,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:08:14,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:08:14,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:08:14,568 INFO L87 Difference]: Start difference. First operand 3666 states and 6457 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:08:15,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:08:15,895 INFO L93 Difference]: Finished difference Result 5831 states and 10065 transitions. [2023-12-18 22:08:15,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-18 22:08:15,895 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-12-18 22:08:15,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:08:15,909 INFO L225 Difference]: With dead ends: 5831 [2023-12-18 22:08:15,909 INFO L226 Difference]: Without dead ends: 4303 [2023-12-18 22:08:15,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-18 22:08:15,913 INFO L413 NwaCegarLoop]: 4192 mSDtfsCounter, 5096 mSDsluCounter, 12441 mSDsCounter, 0 mSdLazyCounter, 1581 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5115 SdHoareTripleChecker+Valid, 16633 SdHoareTripleChecker+Invalid, 1669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-18 22:08:15,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5115 Valid, 16633 Invalid, 1669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1581 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-18 22:08:15,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4303 states. [2023-12-18 22:08:15,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4303 to 3666. [2023-12-18 22:08:15,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3666 states, 3525 states have (on average 1.7670921985815602) internal successors, (6229), 3531 states have internal predecessors, (6229), 105 states have call successors, (105), 30 states have call predecessors, (105), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2023-12-18 22:08:15,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3666 states to 3666 states and 6452 transitions. [2023-12-18 22:08:15,989 INFO L78 Accepts]: Start accepts. Automaton has 3666 states and 6452 transitions. Word has length 151 [2023-12-18 22:08:15,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:08:15,989 INFO L495 AbstractCegarLoop]: Abstraction has 3666 states and 6452 transitions. [2023-12-18 22:08:15,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:08:15,990 INFO L276 IsEmpty]: Start isEmpty. Operand 3666 states and 6452 transitions. [2023-12-18 22:08:15,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-18 22:08:15,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:08:15,991 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:08:15,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-18 22:08:15,991 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:08:15,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:08:15,992 INFO L85 PathProgramCache]: Analyzing trace with hash -638623443, now seen corresponding path program 1 times [2023-12-18 22:08:15,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:08:15,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598785735] [2023-12-18 22:08:15,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:08:15,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:08:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:16,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:08:16,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:16,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:08:16,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:16,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-18 22:08:16,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:16,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-18 22:08:16,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:16,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-18 22:08:16,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:16,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:08:16,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:08:16,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598785735] [2023-12-18 22:08:16,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598785735] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:08:16,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:08:16,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:08:16,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398360107] [2023-12-18 22:08:16,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:08:16,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:08:16,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:08:16,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:08:16,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:08:16,176 INFO L87 Difference]: Start difference. First operand 3666 states and 6452 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:08:17,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:08:17,704 INFO L93 Difference]: Finished difference Result 5824 states and 10037 transitions. [2023-12-18 22:08:17,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-18 22:08:17,705 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-12-18 22:08:17,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:08:17,716 INFO L225 Difference]: With dead ends: 5824 [2023-12-18 22:08:17,716 INFO L226 Difference]: Without dead ends: 4296 [2023-12-18 22:08:17,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-18 22:08:17,724 INFO L413 NwaCegarLoop]: 4192 mSDtfsCounter, 4958 mSDsluCounter, 16550 mSDsCounter, 0 mSdLazyCounter, 1732 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4977 SdHoareTripleChecker+Valid, 20742 SdHoareTripleChecker+Invalid, 1795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-18 22:08:17,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4977 Valid, 20742 Invalid, 1795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1732 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-18 22:08:17,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4296 states. [2023-12-18 22:08:17,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4296 to 3666. [2023-12-18 22:08:17,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3666 states, 3525 states have (on average 1.7656737588652482) internal successors, (6224), 3531 states have internal predecessors, (6224), 105 states have call successors, (105), 30 states have call predecessors, (105), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2023-12-18 22:08:17,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3666 states to 3666 states and 6447 transitions. [2023-12-18 22:08:17,803 INFO L78 Accepts]: Start accepts. Automaton has 3666 states and 6447 transitions. Word has length 151 [2023-12-18 22:08:17,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:08:17,804 INFO L495 AbstractCegarLoop]: Abstraction has 3666 states and 6447 transitions. [2023-12-18 22:08:17,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:08:17,804 INFO L276 IsEmpty]: Start isEmpty. Operand 3666 states and 6447 transitions. [2023-12-18 22:08:17,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-18 22:08:17,805 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:08:17,805 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:08:17,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-18 22:08:17,806 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:08:17,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:08:17,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1068281749, now seen corresponding path program 1 times [2023-12-18 22:08:17,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:08:17,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240708232] [2023-12-18 22:08:17,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:08:17,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:08:17,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:17,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:08:17,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:17,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:08:17,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:17,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-18 22:08:17,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:17,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-18 22:08:17,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:17,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-18 22:08:17,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:17,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:08:17,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:08:17,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240708232] [2023-12-18 22:08:17,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240708232] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:08:17,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:08:17,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:08:17,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912208379] [2023-12-18 22:08:17,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:08:17,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:08:17,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:08:17,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:08:17,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:08:17,971 INFO L87 Difference]: Start difference. First operand 3666 states and 6447 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:08:19,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:08:19,461 INFO L93 Difference]: Finished difference Result 5812 states and 9999 transitions. [2023-12-18 22:08:19,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-18 22:08:19,461 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-12-18 22:08:19,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:08:19,471 INFO L225 Difference]: With dead ends: 5812 [2023-12-18 22:08:19,471 INFO L226 Difference]: Without dead ends: 4284 [2023-12-18 22:08:19,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-18 22:08:19,475 INFO L413 NwaCegarLoop]: 4192 mSDtfsCounter, 4955 mSDsluCounter, 16550 mSDsCounter, 0 mSdLazyCounter, 1708 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4974 SdHoareTripleChecker+Valid, 20742 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-18 22:08:19,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4974 Valid, 20742 Invalid, 1771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1708 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-18 22:08:19,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4284 states. [2023-12-18 22:08:19,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4284 to 3666. [2023-12-18 22:08:19,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3666 states, 3525 states have (on average 1.764255319148936) internal successors, (6219), 3531 states have internal predecessors, (6219), 105 states have call successors, (105), 30 states have call predecessors, (105), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2023-12-18 22:08:19,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3666 states to 3666 states and 6442 transitions. [2023-12-18 22:08:19,552 INFO L78 Accepts]: Start accepts. Automaton has 3666 states and 6442 transitions. Word has length 151 [2023-12-18 22:08:19,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:08:19,552 INFO L495 AbstractCegarLoop]: Abstraction has 3666 states and 6442 transitions. [2023-12-18 22:08:19,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:08:19,553 INFO L276 IsEmpty]: Start isEmpty. Operand 3666 states and 6442 transitions. [2023-12-18 22:08:19,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-18 22:08:19,554 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:08:19,554 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:08:19,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-18 22:08:19,554 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:08:19,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:08:19,555 INFO L85 PathProgramCache]: Analyzing trace with hash -121243863, now seen corresponding path program 1 times [2023-12-18 22:08:19,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:08:19,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579787836] [2023-12-18 22:08:19,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:08:19,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:08:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:19,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:08:19,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:19,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:08:19,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:19,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-18 22:08:19,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:19,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-18 22:08:19,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:19,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-18 22:08:19,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:19,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:08:19,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:08:19,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579787836] [2023-12-18 22:08:19,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579787836] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:08:19,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:08:19,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:08:19,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422355619] [2023-12-18 22:08:19,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:08:19,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:08:19,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:08:19,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:08:19,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:08:19,735 INFO L87 Difference]: Start difference. First operand 3666 states and 6442 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:08:22,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:08:22,631 INFO L93 Difference]: Finished difference Result 7418 states and 12588 transitions. [2023-12-18 22:08:22,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 22:08:22,632 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-12-18 22:08:22,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:08:22,644 INFO L225 Difference]: With dead ends: 7418 [2023-12-18 22:08:22,644 INFO L226 Difference]: Without dead ends: 5890 [2023-12-18 22:08:22,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-18 22:08:22,650 INFO L413 NwaCegarLoop]: 4388 mSDtfsCounter, 5325 mSDsluCounter, 17256 mSDsCounter, 0 mSdLazyCounter, 3327 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5343 SdHoareTripleChecker+Valid, 21644 SdHoareTripleChecker+Invalid, 3388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 3327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-18 22:08:22,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5343 Valid, 21644 Invalid, 3388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 3327 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-18 22:08:22,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5890 states. [2023-12-18 22:08:22,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5890 to 4887. [2023-12-18 22:08:22,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4887 states, 4638 states have (on average 1.7231565329883571) internal successors, (7992), 4648 states have internal predecessors, (7992), 185 states have call successors, (185), 54 states have call predecessors, (185), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2023-12-18 22:08:22,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4887 states to 4887 states and 8397 transitions. [2023-12-18 22:08:22,760 INFO L78 Accepts]: Start accepts. Automaton has 4887 states and 8397 transitions. Word has length 151 [2023-12-18 22:08:22,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:08:22,760 INFO L495 AbstractCegarLoop]: Abstraction has 4887 states and 8397 transitions. [2023-12-18 22:08:22,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:08:22,761 INFO L276 IsEmpty]: Start isEmpty. Operand 4887 states and 8397 transitions. [2023-12-18 22:08:22,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-18 22:08:22,763 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:08:22,764 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:08:22,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-18 22:08:22,764 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:08:22,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:08:22,764 INFO L85 PathProgramCache]: Analyzing trace with hash 740589739, now seen corresponding path program 1 times [2023-12-18 22:08:22,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:08:22,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350329612] [2023-12-18 22:08:22,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:08:22,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:08:22,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:22,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:08:22,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:22,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:08:22,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:22,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-18 22:08:22,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:22,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-18 22:08:22,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:22,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-18 22:08:22,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:22,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:08:22,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:08:22,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350329612] [2023-12-18 22:08:22,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350329612] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:08:22,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:08:22,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:08:22,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095772669] [2023-12-18 22:08:22,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:08:22,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:08:22,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:08:22,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:08:22,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:08:22,936 INFO L87 Difference]: Start difference. First operand 4887 states and 8397 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:08:25,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:08:25,947 INFO L93 Difference]: Finished difference Result 11823 states and 19739 transitions. [2023-12-18 22:08:25,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 22:08:25,947 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-12-18 22:08:25,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:08:25,971 INFO L225 Difference]: With dead ends: 11823 [2023-12-18 22:08:25,972 INFO L226 Difference]: Without dead ends: 9074 [2023-12-18 22:08:25,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-18 22:08:25,979 INFO L413 NwaCegarLoop]: 4388 mSDtfsCounter, 5324 mSDsluCounter, 17256 mSDsCounter, 0 mSdLazyCounter, 3314 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5342 SdHoareTripleChecker+Valid, 21644 SdHoareTripleChecker+Invalid, 3375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 3314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-18 22:08:25,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5342 Valid, 21644 Invalid, 3375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 3314 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-18 22:08:25,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9074 states. [2023-12-18 22:08:26,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9074 to 7326. [2023-12-18 22:08:26,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7326 states, 6861 states have (on average 1.6802215420492639) internal successors, (11528), 6879 states have internal predecessors, (11528), 345 states have call successors, (345), 102 states have call predecessors, (345), 118 states have return successors, (442), 360 states have call predecessors, (442), 345 states have call successors, (442) [2023-12-18 22:08:26,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7326 states to 7326 states and 12315 transitions. [2023-12-18 22:08:26,162 INFO L78 Accepts]: Start accepts. Automaton has 7326 states and 12315 transitions. Word has length 151 [2023-12-18 22:08:26,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:08:26,162 INFO L495 AbstractCegarLoop]: Abstraction has 7326 states and 12315 transitions. [2023-12-18 22:08:26,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:08:26,163 INFO L276 IsEmpty]: Start isEmpty. Operand 7326 states and 12315 transitions. [2023-12-18 22:08:26,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-18 22:08:26,166 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:08:26,166 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:08:26,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-18 22:08:26,166 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:08:26,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:08:26,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1309819159, now seen corresponding path program 1 times [2023-12-18 22:08:26,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:08:26,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236530877] [2023-12-18 22:08:26,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:08:26,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:08:26,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:26,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:08:26,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:26,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:08:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:26,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-18 22:08:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:26,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-18 22:08:26,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:26,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-18 22:08:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:26,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:08:26,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:08:26,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236530877] [2023-12-18 22:08:26,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236530877] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:08:26,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:08:26,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:08:26,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795187397] [2023-12-18 22:08:26,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:08:26,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:08:26,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:08:26,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:08:26,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:08:26,331 INFO L87 Difference]: Start difference. First operand 7326 states and 12315 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:08:29,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:08:29,400 INFO L93 Difference]: Finished difference Result 20624 states and 34083 transitions. [2023-12-18 22:08:29,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 22:08:29,401 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-12-18 22:08:29,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:08:29,430 INFO L225 Difference]: With dead ends: 20624 [2023-12-18 22:08:29,431 INFO L226 Difference]: Without dead ends: 15436 [2023-12-18 22:08:29,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-18 22:08:29,441 INFO L413 NwaCegarLoop]: 4388 mSDtfsCounter, 5323 mSDsluCounter, 17256 mSDsCounter, 0 mSdLazyCounter, 3301 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5341 SdHoareTripleChecker+Valid, 21644 SdHoareTripleChecker+Invalid, 3362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 3301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-18 22:08:29,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5341 Valid, 21644 Invalid, 3362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 3301 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-18 22:08:29,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15436 states. [2023-12-18 22:08:29,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15436 to 12219. [2023-12-18 22:08:29,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12219 states, 11322 states have (on average 1.6447624094682918) internal successors, (18622), 11356 states have internal predecessors, (18622), 665 states have call successors, (665), 198 states have call predecessors, (665), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2023-12-18 22:08:29,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12219 states to 12219 states and 20227 transitions. [2023-12-18 22:08:29,761 INFO L78 Accepts]: Start accepts. Automaton has 12219 states and 20227 transitions. Word has length 151 [2023-12-18 22:08:29,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:08:29,761 INFO L495 AbstractCegarLoop]: Abstraction has 12219 states and 20227 transitions. [2023-12-18 22:08:29,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:08:29,761 INFO L276 IsEmpty]: Start isEmpty. Operand 12219 states and 20227 transitions. [2023-12-18 22:08:29,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-18 22:08:29,769 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:08:29,769 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:08:29,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-18 22:08:29,769 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:08:29,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:08:29,770 INFO L85 PathProgramCache]: Analyzing trace with hash -821772053, now seen corresponding path program 1 times [2023-12-18 22:08:29,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:08:29,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845674864] [2023-12-18 22:08:29,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:08:29,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:08:29,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:29,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:08:29,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:29,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:08:29,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:29,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-18 22:08:29,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:29,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-18 22:08:29,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:29,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-18 22:08:29,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:29,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:08:29,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:08:29,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845674864] [2023-12-18 22:08:29,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845674864] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:08:29,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:08:29,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:08:29,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584695082] [2023-12-18 22:08:29,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:08:29,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:08:29,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:08:29,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:08:29,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:08:29,957 INFO L87 Difference]: Start difference. First operand 12219 states and 20227 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:08:31,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:08:31,577 INFO L93 Difference]: Finished difference Result 25682 states and 42532 transitions. [2023-12-18 22:08:31,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-18 22:08:31,578 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-12-18 22:08:31,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:08:31,620 INFO L225 Difference]: With dead ends: 25682 [2023-12-18 22:08:31,620 INFO L226 Difference]: Without dead ends: 15601 [2023-12-18 22:08:31,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-18 22:08:31,651 INFO L413 NwaCegarLoop]: 4192 mSDtfsCounter, 4956 mSDsluCounter, 16550 mSDsCounter, 0 mSdLazyCounter, 1662 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4975 SdHoareTripleChecker+Valid, 20742 SdHoareTripleChecker+Invalid, 1725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-18 22:08:31,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4975 Valid, 20742 Invalid, 1725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1662 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-18 22:08:31,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15601 states. [2023-12-18 22:08:32,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15601 to 12219. [2023-12-18 22:08:32,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12219 states, 11322 states have (on average 1.641847730083024) internal successors, (18589), 11356 states have internal predecessors, (18589), 665 states have call successors, (665), 198 states have call predecessors, (665), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2023-12-18 22:08:32,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12219 states to 12219 states and 20194 transitions. [2023-12-18 22:08:32,157 INFO L78 Accepts]: Start accepts. Automaton has 12219 states and 20194 transitions. Word has length 151 [2023-12-18 22:08:32,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:08:32,158 INFO L495 AbstractCegarLoop]: Abstraction has 12219 states and 20194 transitions. [2023-12-18 22:08:32,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:08:32,158 INFO L276 IsEmpty]: Start isEmpty. Operand 12219 states and 20194 transitions. [2023-12-18 22:08:32,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-18 22:08:32,164 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:08:32,164 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:08:32,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-18 22:08:32,165 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:08:32,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:08:32,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1914407255, now seen corresponding path program 1 times [2023-12-18 22:08:32,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:08:32,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134790393] [2023-12-18 22:08:32,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:08:32,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:08:32,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:32,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:08:32,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:32,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:08:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:32,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-18 22:08:32,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:32,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-18 22:08:32,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:32,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-18 22:08:32,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:32,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:08:32,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:08:32,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134790393] [2023-12-18 22:08:32,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134790393] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:08:32,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:08:32,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:08:32,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124861953] [2023-12-18 22:08:32,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:08:32,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:08:32,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:08:32,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:08:32,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:08:32,328 INFO L87 Difference]: Start difference. First operand 12219 states and 20194 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:08:35,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:08:35,735 INFO L93 Difference]: Finished difference Result 42673 states and 69999 transitions. [2023-12-18 22:08:35,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:08:35,736 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-12-18 22:08:35,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:08:35,825 INFO L225 Difference]: With dead ends: 42673 [2023-12-18 22:08:35,825 INFO L226 Difference]: Without dead ends: 32592 [2023-12-18 22:08:35,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:08:35,854 INFO L413 NwaCegarLoop]: 4386 mSDtfsCounter, 5714 mSDsluCounter, 17251 mSDsCounter, 0 mSdLazyCounter, 3253 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5744 SdHoareTripleChecker+Valid, 21637 SdHoareTripleChecker+Invalid, 3317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 3253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-18 22:08:35,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5744 Valid, 21637 Invalid, 3317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 3253 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-18 22:08:35,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32592 states. [2023-12-18 22:08:36,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32592 to 22005. [2023-12-18 22:08:36,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22005 states, 20276 states have (on average 1.617330834484119) internal successors, (32793), 20342 states have internal predecessors, (32793), 1273 states have call successors, (1273), 390 states have call predecessors, (1273), 454 states have return successors, (2066), 1336 states have call predecessors, (2066), 1273 states have call successors, (2066) [2023-12-18 22:08:36,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22005 states to 22005 states and 36132 transitions. [2023-12-18 22:08:36,691 INFO L78 Accepts]: Start accepts. Automaton has 22005 states and 36132 transitions. Word has length 151 [2023-12-18 22:08:36,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:08:36,692 INFO L495 AbstractCegarLoop]: Abstraction has 22005 states and 36132 transitions. [2023-12-18 22:08:36,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:08:36,692 INFO L276 IsEmpty]: Start isEmpty. Operand 22005 states and 36132 transitions. [2023-12-18 22:08:36,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-18 22:08:36,701 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:08:36,701 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:08:36,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-18 22:08:36,702 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:08:36,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:08:36,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1098387755, now seen corresponding path program 1 times [2023-12-18 22:08:36,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:08:36,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143772697] [2023-12-18 22:08:36,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:08:36,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:08:36,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:36,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:08:36,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:36,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:08:36,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:36,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-18 22:08:36,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:36,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-18 22:08:36,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:36,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-18 22:08:36,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:36,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:08:36,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:08:36,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143772697] [2023-12-18 22:08:36,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143772697] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:08:36,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:08:36,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:08:36,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124763992] [2023-12-18 22:08:36,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:08:36,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:08:36,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:08:36,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:08:36,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:08:36,846 INFO L87 Difference]: Start difference. First operand 22005 states and 36132 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:08:41,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:08:41,020 INFO L93 Difference]: Finished difference Result 81465 states and 133999 transitions. [2023-12-18 22:08:41,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:08:41,020 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-12-18 22:08:41,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:08:41,208 INFO L225 Difference]: With dead ends: 81465 [2023-12-18 22:08:41,208 INFO L226 Difference]: Without dead ends: 61598 [2023-12-18 22:08:41,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:08:41,270 INFO L413 NwaCegarLoop]: 4385 mSDtfsCounter, 5411 mSDsluCounter, 17248 mSDsCounter, 0 mSdLazyCounter, 3855 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5428 SdHoareTripleChecker+Valid, 21633 SdHoareTripleChecker+Invalid, 3918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-18 22:08:41,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5428 Valid, 21633 Invalid, 3918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3855 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-18 22:08:41,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61598 states. [2023-12-18 22:08:42,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61598 to 41254. [2023-12-18 22:08:42,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41254 states, 37893 states have (on average 1.603119309635025) internal successors, (60747), 38023 states have internal predecessors, (60747), 2457 states have call successors, (2457), 774 states have call predecessors, (2457), 902 states have return successors, (4772), 2584 states have call predecessors, (4772), 2457 states have call successors, (4772) [2023-12-18 22:08:43,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41254 states to 41254 states and 67976 transitions. [2023-12-18 22:08:43,107 INFO L78 Accepts]: Start accepts. Automaton has 41254 states and 67976 transitions. Word has length 151 [2023-12-18 22:08:43,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:08:43,107 INFO L495 AbstractCegarLoop]: Abstraction has 41254 states and 67976 transitions. [2023-12-18 22:08:43,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:08:43,107 INFO L276 IsEmpty]: Start isEmpty. Operand 41254 states and 67976 transitions. [2023-12-18 22:08:43,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-18 22:08:43,126 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:08:43,126 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:08:43,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-18 22:08:43,127 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:08:43,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:08:43,127 INFO L85 PathProgramCache]: Analyzing trace with hash -744087959, now seen corresponding path program 1 times [2023-12-18 22:08:43,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:08:43,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775649605] [2023-12-18 22:08:43,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:08:43,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:08:43,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:43,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:08:43,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:43,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:08:43,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:43,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-18 22:08:43,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:43,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-18 22:08:43,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:43,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-18 22:08:43,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:43,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:08:43,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:08:43,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775649605] [2023-12-18 22:08:43,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775649605] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:08:43,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:08:43,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:08:43,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024400585] [2023-12-18 22:08:43,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:08:43,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:08:43,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:08:43,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:08:43,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:08:43,365 INFO L87 Difference]: Start difference. First operand 41254 states and 67976 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:08:48,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:08:48,248 INFO L93 Difference]: Finished difference Result 155526 states and 258177 transitions. [2023-12-18 22:08:48,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:08:48,249 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-12-18 22:08:48,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:08:48,580 INFO L225 Difference]: With dead ends: 155526 [2023-12-18 22:08:48,580 INFO L226 Difference]: Without dead ends: 116410 [2023-12-18 22:08:48,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:08:48,660 INFO L413 NwaCegarLoop]: 4386 mSDtfsCounter, 5609 mSDsluCounter, 17251 mSDsCounter, 0 mSdLazyCounter, 3208 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5639 SdHoareTripleChecker+Valid, 21637 SdHoareTripleChecker+Invalid, 3272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 3208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-18 22:08:48,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5639 Valid, 21637 Invalid, 3272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 3208 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-18 22:08:48,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116410 states. [2023-12-18 22:08:51,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116410 to 80200. [2023-12-18 22:08:51,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80200 states, 73639 states have (on average 1.5963144529393392) internal successors, (117551), 73897 states have internal predecessors, (117551), 4761 states have call successors, (4761), 1542 states have call predecessors, (4761), 1798 states have return successors, (11578), 5016 states have call predecessors, (11578), 4761 states have call successors, (11578) [2023-12-18 22:08:52,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80200 states to 80200 states and 133890 transitions. [2023-12-18 22:08:52,051 INFO L78 Accepts]: Start accepts. Automaton has 80200 states and 133890 transitions. Word has length 151 [2023-12-18 22:08:52,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:08:52,052 INFO L495 AbstractCegarLoop]: Abstraction has 80200 states and 133890 transitions. [2023-12-18 22:08:52,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:08:52,052 INFO L276 IsEmpty]: Start isEmpty. Operand 80200 states and 133890 transitions. [2023-12-18 22:08:52,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-18 22:08:52,088 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:08:52,088 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:08:52,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-18 22:08:52,088 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:08:52,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:08:52,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1076731097, now seen corresponding path program 1 times [2023-12-18 22:08:52,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:08:52,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033545945] [2023-12-18 22:08:52,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:08:52,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:08:52,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:52,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:08:52,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:52,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:08:52,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:52,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-18 22:08:52,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:52,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-18 22:08:52,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:52,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-18 22:08:52,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:08:52,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:08:52,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:08:52,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033545945] [2023-12-18 22:08:52,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033545945] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:08:52,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:08:52,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:08:52,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396272359] [2023-12-18 22:08:52,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:08:52,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:08:52,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:08:52,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:08:52,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:08:52,242 INFO L87 Difference]: Start difference. First operand 80200 states and 133890 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:09:00,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:09:00,065 INFO L93 Difference]: Finished difference Result 304358 states and 513273 transitions. [2023-12-18 22:09:00,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:09:00,066 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-12-18 22:09:00,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:09:00,898 INFO L225 Difference]: With dead ends: 304358 [2023-12-18 22:09:00,898 INFO L226 Difference]: Without dead ends: 226296 [2023-12-18 22:09:01,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:09:01,188 INFO L413 NwaCegarLoop]: 4386 mSDtfsCounter, 5379 mSDsluCounter, 17251 mSDsCounter, 0 mSdLazyCounter, 3678 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5396 SdHoareTripleChecker+Valid, 21637 SdHoareTripleChecker+Invalid, 3741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-18 22:09:01,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5396 Valid, 21637 Invalid, 3741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3678 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-18 22:09:01,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226296 states. [2023-12-18 22:09:07,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226296 to 158089. [2023-12-18 22:09:07,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158089 states, 145256 states have (on average 1.5931114721594977) internal successors, (231409), 145770 states have internal predecessors, (231409), 9241 states have call successors, (9241), 3078 states have call predecessors, (9241), 3590 states have return successors, (29436), 9752 states have call predecessors, (29436), 9241 states have call successors, (29436) [2023-12-18 22:09:08,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158089 states to 158089 states and 270086 transitions. [2023-12-18 22:09:08,192 INFO L78 Accepts]: Start accepts. Automaton has 158089 states and 270086 transitions. Word has length 151 [2023-12-18 22:09:08,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:09:08,192 INFO L495 AbstractCegarLoop]: Abstraction has 158089 states and 270086 transitions. [2023-12-18 22:09:08,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:09:08,193 INFO L276 IsEmpty]: Start isEmpty. Operand 158089 states and 270086 transitions. [2023-12-18 22:09:08,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-18 22:09:08,263 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:09:08,263 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:09:08,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-18 22:09:08,263 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:09:08,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:09:08,264 INFO L85 PathProgramCache]: Analyzing trace with hash 852201129, now seen corresponding path program 1 times [2023-12-18 22:09:08,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:09:08,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128110430] [2023-12-18 22:09:08,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:09:08,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:09:08,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:09:08,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:09:08,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:09:08,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:09:08,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:09:08,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-18 22:09:08,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:09:08,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-18 22:09:08,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:09:08,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-18 22:09:08,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:09:08,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:09:08,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:09:08,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128110430] [2023-12-18 22:09:08,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128110430] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:09:08,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:09:08,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:09:08,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425243945] [2023-12-18 22:09:08,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:09:08,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:09:08,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:09:08,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:09:08,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:09:08,434 INFO L87 Difference]: Start difference. First operand 158089 states and 270086 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:09:20,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:09:20,918 INFO L93 Difference]: Finished difference Result 598181 states and 1034303 transitions. [2023-12-18 22:09:20,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:09:20,919 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-12-18 22:09:20,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:09:22,801 INFO L225 Difference]: With dead ends: 598181 [2023-12-18 22:09:22,802 INFO L226 Difference]: Without dead ends: 442230 [2023-12-18 22:09:23,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:09:23,289 INFO L413 NwaCegarLoop]: 4386 mSDtfsCounter, 5537 mSDsluCounter, 17251 mSDsCounter, 0 mSdLazyCounter, 3182 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5567 SdHoareTripleChecker+Valid, 21637 SdHoareTripleChecker+Invalid, 3246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 3182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-18 22:09:23,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5567 Valid, 21637 Invalid, 3246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 3182 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-18 22:09:23,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442230 states. [2023-12-18 22:09:36,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442230 to 313866. [2023-12-18 22:09:36,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313866 states, 288745 states have (on average 1.5918370880881054) internal successors, (459635), 289771 states have internal predecessors, (459635), 17945 states have call successors, (17945), 6150 states have call predecessors, (17945), 7174 states have return successors, (78018), 18968 states have call predecessors, (78018), 17945 states have call successors, (78018) [2023-12-18 22:09:38,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313866 states to 313866 states and 555598 transitions. [2023-12-18 22:09:38,385 INFO L78 Accepts]: Start accepts. Automaton has 313866 states and 555598 transitions. Word has length 151 [2023-12-18 22:09:38,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:09:38,385 INFO L495 AbstractCegarLoop]: Abstraction has 313866 states and 555598 transitions. [2023-12-18 22:09:38,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:09:38,386 INFO L276 IsEmpty]: Start isEmpty. Operand 313866 states and 555598 transitions. [2023-12-18 22:09:38,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-18 22:09:38,508 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:09:38,508 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:09:38,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-18 22:09:38,508 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:09:38,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:09:38,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1440879897, now seen corresponding path program 1 times [2023-12-18 22:09:38,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:09:38,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888949355] [2023-12-18 22:09:38,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:09:38,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:09:38,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:09:38,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:09:38,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:09:38,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:09:38,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:09:38,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-18 22:09:38,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:09:38,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-18 22:09:38,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:09:38,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-18 22:09:38,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:09:38,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:09:38,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:09:38,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888949355] [2023-12-18 22:09:38,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888949355] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:09:38,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:09:38,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:09:38,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791920474] [2023-12-18 22:09:38,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:09:38,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:09:38,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:09:38,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:09:38,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:09:38,666 INFO L87 Difference]: Start difference. First operand 313866 states and 555598 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)