/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/Problem05_label49+token_ring.07.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 11:44:20,558 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 11:44:20,631 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 11:44:20,636 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 11:44:20,636 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 11:44:20,658 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 11:44:20,659 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 11:44:20,659 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 11:44:20,659 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 11:44:20,662 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 11:44:20,663 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 11:44:20,663 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 11:44:20,663 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 11:44:20,664 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 11:44:20,665 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 11:44:20,665 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 11:44:20,665 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 11:44:20,665 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 11:44:20,665 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 11:44:20,665 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 11:44:20,665 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 11:44:20,666 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 11:44:20,666 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 11:44:20,666 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 11:44:20,666 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 11:44:20,666 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 11:44:20,667 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 11:44:20,667 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 11:44:20,667 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 11:44:20,667 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 11:44:20,668 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 11:44:20,668 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 11:44:20,668 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 11:44:20,668 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 11:44:20,668 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 11:44:20,669 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 11:44:20,669 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 11:44:20,669 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 11:44:20,669 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 11:44:20,669 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 11:44:20,669 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 11:44:20,669 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 11:44:20,669 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 11:44:20,670 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 11:44:20,841 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 11:44:20,854 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 11:44:20,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 11:44:20,857 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 11:44:20,857 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 11:44:20,858 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label49+token_ring.07.cil-1.c [2023-12-20 11:44:22,002 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 11:44:22,529 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 11:44:22,530 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label49+token_ring.07.cil-1.c [2023-12-20 11:44:22,579 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/874446d81/a873ba6529284d70b5c686c19f9c4e87/FLAG665653725 [2023-12-20 11:44:22,592 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/874446d81/a873ba6529284d70b5c686c19f9c4e87 [2023-12-20 11:44:22,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 11:44:22,595 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 11:44:22,597 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 11:44:22,597 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 11:44:22,601 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 11:44:22,601 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 11:44:22" (1/1) ... [2023-12-20 11:44:22,602 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b22c185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:44:22, skipping insertion in model container [2023-12-20 11:44:22,602 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 11:44:22" (1/1) ... [2023-12-20 11:44:22,798 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 11:44:24,072 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_label49+token_ring.07.cil-1.c[380593,380606] [2023-12-20 11:44:24,093 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_label49+token_ring.07.cil-1.c[383339,383352] [2023-12-20 11:44:24,273 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 11:44:24,284 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 11:44:24,884 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_label49+token_ring.07.cil-1.c[380593,380606] [2023-12-20 11:44:24,888 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_label49+token_ring.07.cil-1.c[383339,383352] [2023-12-20 11:44:24,903 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 11:44:24,946 INFO L206 MainTranslator]: Completed translation [2023-12-20 11:44:24,947 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:44:24 WrapperNode [2023-12-20 11:44:24,948 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 11:44:24,949 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 11:44:24,950 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 11:44:24,950 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 11:44:24,955 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:44:24" (1/1) ... [2023-12-20 11:44:25,023 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:44:24" (1/1) ... [2023-12-20 11:44:25,340 INFO L138 Inliner]: procedures = 58, calls = 62, calls flagged for inlining = 36, calls inlined = 36, statements flattened = 12933 [2023-12-20 11:44:25,340 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 11:44:25,341 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 11:44:25,341 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 11:44:25,341 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 11:44:25,349 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:44:24" (1/1) ... [2023-12-20 11:44:25,350 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:44:24" (1/1) ... [2023-12-20 11:44:25,509 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:44:24" (1/1) ... [2023-12-20 11:44:25,576 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 11:44:25,577 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:44:24" (1/1) ... [2023-12-20 11:44:25,577 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:44:24" (1/1) ... [2023-12-20 11:44:25,736 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:44:24" (1/1) ... [2023-12-20 11:44:25,766 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:44:24" (1/1) ... [2023-12-20 11:44:25,786 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:44:24" (1/1) ... [2023-12-20 11:44:25,807 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:44:24" (1/1) ... [2023-12-20 11:44:25,857 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 11:44:25,858 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 11:44:25,858 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 11:44:25,858 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 11:44:25,859 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:44:24" (1/1) ... [2023-12-20 11:44:25,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 11:44:25,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 11:44:25,889 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 11:44:25,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 11:44:25,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 11:44:25,918 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-20 11:44:25,918 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-20 11:44:25,918 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-20 11:44:25,918 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-20 11:44:25,918 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-20 11:44:25,918 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-20 11:44:25,918 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-20 11:44:25,918 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-20 11:44:25,918 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-20 11:44:25,919 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-20 11:44:25,919 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-20 11:44:25,919 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-20 11:44:25,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 11:44:25,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 11:44:25,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 11:44:26,004 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 11:44:26,006 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 11:44:31,388 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 11:44:31,447 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 11:44:31,448 INFO L309 CfgBuilder]: Removed 11 assume(true) statements. [2023-12-20 11:44:31,448 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 11:44:31 BoogieIcfgContainer [2023-12-20 11:44:31,448 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 11:44:31,450 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 11:44:31,450 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 11:44:31,452 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 11:44:31,452 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 11:44:22" (1/3) ... [2023-12-20 11:44:31,452 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44b0cbc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 11:44:31, skipping insertion in model container [2023-12-20 11:44:31,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:44:24" (2/3) ... [2023-12-20 11:44:31,453 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44b0cbc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 11:44:31, skipping insertion in model container [2023-12-20 11:44:31,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 11:44:31" (3/3) ... [2023-12-20 11:44:31,454 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.07.cil-1.c [2023-12-20 11:44:31,465 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 11:44:31,465 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 11:44:31,519 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 11:44:31,523 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;@4911b97c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 11:44:31,524 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 11:44:31,533 INFO L276 IsEmpty]: Start isEmpty. Operand has 2356 states, 2326 states have (on average 1.880481513327601) internal successors, (4374), 2329 states have internal predecessors, (4374), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-20 11:44:31,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-20 11:44:31,544 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:44:31,544 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] [2023-12-20 11:44:31,545 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:44:31,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:44:31,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1751521651, now seen corresponding path program 1 times [2023-12-20 11:44:31,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:44:31,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003423574] [2023-12-20 11:44:31,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:44:31,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:44:31,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:31,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:44:31,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:31,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 11:44:31,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:31,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 11:44:31,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:32,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 11:44:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:32,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 11:44:32,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:32,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:44:32,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:44:32,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003423574] [2023-12-20 11:44:32,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003423574] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:44:32,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:44:32,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 11:44:32,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570022681] [2023-12-20 11:44:32,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:44:32,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 11:44:32,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:44:32,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 11:44:32,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 11:44:32,086 INFO L87 Difference]: Start difference. First operand has 2356 states, 2326 states have (on average 1.880481513327601) internal successors, (4374), 2329 states have internal predecessors, (4374), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 3 states have internal predecessors, (101), 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) [2023-12-20 11:44:33,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:44:33,162 INFO L93 Difference]: Finished difference Result 4782 states and 8954 transitions. [2023-12-20 11:44:33,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 11:44:33,164 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 3 states have internal predecessors, (101), 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 111 [2023-12-20 11:44:33,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:44:33,189 INFO L225 Difference]: With dead ends: 4782 [2023-12-20 11:44:33,189 INFO L226 Difference]: Without dead ends: 2432 [2023-12-20 11:44:33,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-20 11:44:33,201 INFO L413 NwaCegarLoop]: 4162 mSDtfsCounter, 618 mSDsluCounter, 12094 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 16256 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 11:44:33,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 16256 Invalid, 726 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [46 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 11:44:33,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2432 states. [2023-12-20 11:44:33,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2432 to 2352. [2023-12-20 11:44:33,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2352 states, 2323 states have (on average 1.8441670253981919) internal successors, (4284), 2325 states have internal predecessors, (4284), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-20 11:44:33,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2352 states to 2352 states and 4326 transitions. [2023-12-20 11:44:33,289 INFO L78 Accepts]: Start accepts. Automaton has 2352 states and 4326 transitions. Word has length 111 [2023-12-20 11:44:33,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:44:33,289 INFO L495 AbstractCegarLoop]: Abstraction has 2352 states and 4326 transitions. [2023-12-20 11:44:33,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 3 states have internal predecessors, (101), 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) [2023-12-20 11:44:33,289 INFO L276 IsEmpty]: Start isEmpty. Operand 2352 states and 4326 transitions. [2023-12-20 11:44:33,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-20 11:44:33,292 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:44:33,292 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] [2023-12-20 11:44:33,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 11:44:33,292 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:44:33,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:44:33,293 INFO L85 PathProgramCache]: Analyzing trace with hash -637042379, now seen corresponding path program 1 times [2023-12-20 11:44:33,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:44:33,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367634868] [2023-12-20 11:44:33,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:44:33,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:44:33,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:33,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:44:33,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:33,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 11:44:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:33,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 11:44:33,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:33,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 11:44:33,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:33,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 11:44:33,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:33,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:44:33,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:44:33,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367634868] [2023-12-20 11:44:33,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367634868] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:44:33,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:44:33,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 11:44:33,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101115177] [2023-12-20 11:44:33,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:44:33,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 11:44:33,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:44:33,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 11:44:33,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 11:44:33,510 INFO L87 Difference]: Start difference. First operand 2352 states and 4326 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 4 states have internal predecessors, (101), 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) [2023-12-20 11:44:35,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:44:35,065 INFO L93 Difference]: Finished difference Result 2957 states and 5322 transitions. [2023-12-20 11:44:35,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 11:44:35,066 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 4 states have internal predecessors, (101), 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 111 [2023-12-20 11:44:35,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:44:35,075 INFO L225 Difference]: With dead ends: 2957 [2023-12-20 11:44:35,075 INFO L226 Difference]: Without dead ends: 2739 [2023-12-20 11:44:35,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-20 11:44:35,078 INFO L413 NwaCegarLoop]: 4137 mSDtfsCounter, 4889 mSDsluCounter, 12392 mSDsCounter, 0 mSdLazyCounter, 1453 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4903 SdHoareTripleChecker+Valid, 16529 SdHoareTripleChecker+Invalid, 1541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 11:44:35,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4903 Valid, 16529 Invalid, 1541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1453 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 11:44:35,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2739 states. [2023-12-20 11:44:35,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2739 to 2580. [2023-12-20 11:44:35,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2580 states, 2528 states have (on average 1.8263449367088607) internal successors, (4617), 2531 states have internal predecessors, (4617), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2023-12-20 11:44:35,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2580 states to 2580 states and 4694 transitions. [2023-12-20 11:44:35,130 INFO L78 Accepts]: Start accepts. Automaton has 2580 states and 4694 transitions. Word has length 111 [2023-12-20 11:44:35,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:44:35,130 INFO L495 AbstractCegarLoop]: Abstraction has 2580 states and 4694 transitions. [2023-12-20 11:44:35,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 4 states have internal predecessors, (101), 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) [2023-12-20 11:44:35,131 INFO L276 IsEmpty]: Start isEmpty. Operand 2580 states and 4694 transitions. [2023-12-20 11:44:35,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-20 11:44:35,132 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:44:35,132 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] [2023-12-20 11:44:35,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 11:44:35,132 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:44:35,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:44:35,133 INFO L85 PathProgramCache]: Analyzing trace with hash 641956281, now seen corresponding path program 1 times [2023-12-20 11:44:35,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:44:35,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775369292] [2023-12-20 11:44:35,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:44:35,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:44:35,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:35,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:44:35,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:35,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 11:44:35,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:35,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 11:44:35,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:35,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 11:44:35,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:35,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 11:44:35,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:35,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:44:35,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:44:35,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775369292] [2023-12-20 11:44:35,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775369292] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:44:35,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:44:35,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:44:35,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527903165] [2023-12-20 11:44:35,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:44:35,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:44:35,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:44:35,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:44:35,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:44:35,288 INFO L87 Difference]: Start difference. First operand 2580 states and 4694 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 11:44:37,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:44:37,437 INFO L93 Difference]: Finished difference Result 3502 states and 6208 transitions. [2023-12-20 11:44:37,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 11:44:37,438 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2023-12-20 11:44:37,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:44:37,448 INFO L225 Difference]: With dead ends: 3502 [2023-12-20 11:44:37,448 INFO L226 Difference]: Without dead ends: 3056 [2023-12-20 11:44:37,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 11:44:37,451 INFO L413 NwaCegarLoop]: 4270 mSDtfsCounter, 4904 mSDsluCounter, 16836 mSDsCounter, 0 mSdLazyCounter, 2373 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4918 SdHoareTripleChecker+Valid, 21106 SdHoareTripleChecker+Invalid, 2424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-20 11:44:37,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4918 Valid, 21106 Invalid, 2424 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [51 Valid, 2373 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-20 11:44:37,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3056 states. [2023-12-20 11:44:37,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3056 to 2791. [2023-12-20 11:44:37,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2791 states, 2716 states have (on average 1.8100147275405007) internal successors, (4916), 2720 states have internal predecessors, (4916), 53 states have call successors, (53), 18 states have call predecessors, (53), 20 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2023-12-20 11:44:37,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2791 states to 2791 states and 5027 transitions. [2023-12-20 11:44:37,520 INFO L78 Accepts]: Start accepts. Automaton has 2791 states and 5027 transitions. Word has length 111 [2023-12-20 11:44:37,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:44:37,520 INFO L495 AbstractCegarLoop]: Abstraction has 2791 states and 5027 transitions. [2023-12-20 11:44:37,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 11:44:37,521 INFO L276 IsEmpty]: Start isEmpty. Operand 2791 states and 5027 transitions. [2023-12-20 11:44:37,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-20 11:44:37,522 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:44:37,522 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] [2023-12-20 11:44:37,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 11:44:37,523 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:44:37,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:44:37,523 INFO L85 PathProgramCache]: Analyzing trace with hash -977018633, now seen corresponding path program 1 times [2023-12-20 11:44:37,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:44:37,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403429964] [2023-12-20 11:44:37,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:44:37,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:44:37,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:37,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:44:37,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:37,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 11:44:37,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:37,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 11:44:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:37,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 11:44:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:37,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 11:44:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:37,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:44:37,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:44:37,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403429964] [2023-12-20 11:44:37,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403429964] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:44:37,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:44:37,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:44:37,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089300932] [2023-12-20 11:44:37,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:44:37,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:44:37,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:44:37,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:44:37,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:44:37,688 INFO L87 Difference]: Start difference. First operand 2791 states and 5027 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 11:44:39,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:44:39,552 INFO L93 Difference]: Finished difference Result 4300 states and 7499 transitions. [2023-12-20 11:44:39,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 11:44:39,553 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2023-12-20 11:44:39,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:44:39,565 INFO L225 Difference]: With dead ends: 4300 [2023-12-20 11:44:39,566 INFO L226 Difference]: Without dead ends: 3643 [2023-12-20 11:44:39,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 11:44:39,570 INFO L413 NwaCegarLoop]: 4268 mSDtfsCounter, 4902 mSDsluCounter, 16836 mSDsCounter, 0 mSdLazyCounter, 2369 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4916 SdHoareTripleChecker+Valid, 21104 SdHoareTripleChecker+Invalid, 2422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 2369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 11:44:39,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4916 Valid, 21104 Invalid, 2422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 2369 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 11:44:39,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3643 states. [2023-12-20 11:44:39,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3643 to 3214. [2023-12-20 11:44:39,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3214 states, 3093 states have (on average 1.7830585192369868) internal successors, (5515), 3099 states have internal predecessors, (5515), 85 states have call successors, (85), 30 states have call predecessors, (85), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2023-12-20 11:44:39,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3214 states to 3214 states and 5698 transitions. [2023-12-20 11:44:39,678 INFO L78 Accepts]: Start accepts. Automaton has 3214 states and 5698 transitions. Word has length 111 [2023-12-20 11:44:39,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:44:39,679 INFO L495 AbstractCegarLoop]: Abstraction has 3214 states and 5698 transitions. [2023-12-20 11:44:39,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 11:44:39,679 INFO L276 IsEmpty]: Start isEmpty. Operand 3214 states and 5698 transitions. [2023-12-20 11:44:39,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-20 11:44:39,681 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:44:39,681 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:44:39,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 11:44:39,681 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:44:39,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:44:39,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1860527623, now seen corresponding path program 1 times [2023-12-20 11:44:39,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:44:39,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488631255] [2023-12-20 11:44:39,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:44:39,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:44:39,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:39,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:44:39,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:39,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 11:44:39,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:39,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 11:44:39,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:39,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 11:44:39,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:39,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 11:44:39,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:39,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:44:39,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:44:39,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488631255] [2023-12-20 11:44:39,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488631255] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:44:39,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:44:39,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:44:39,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927991699] [2023-12-20 11:44:39,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:44:39,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:44:39,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:44:39,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:44:39,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:44:39,857 INFO L87 Difference]: Start difference. First operand 3214 states and 5698 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 11:44:40,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:44:40,992 INFO L93 Difference]: Finished difference Result 4713 states and 8163 transitions. [2023-12-20 11:44:40,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 11:44:40,993 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2023-12-20 11:44:40,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:44:41,006 INFO L225 Difference]: With dead ends: 4713 [2023-12-20 11:44:41,007 INFO L226 Difference]: Without dead ends: 3633 [2023-12-20 11:44:41,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 11:44:41,017 INFO L413 NwaCegarLoop]: 4124 mSDtfsCounter, 4645 mSDsluCounter, 16334 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4660 SdHoareTripleChecker+Valid, 20458 SdHoareTripleChecker+Invalid, 1260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 11:44:41,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4660 Valid, 20458 Invalid, 1260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 11:44:41,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3633 states. [2023-12-20 11:44:41,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3633 to 3214. [2023-12-20 11:44:41,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3214 states, 3093 states have (on average 1.7814419657290657) internal successors, (5510), 3099 states have internal predecessors, (5510), 85 states have call successors, (85), 30 states have call predecessors, (85), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2023-12-20 11:44:41,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3214 states to 3214 states and 5693 transitions. [2023-12-20 11:44:41,098 INFO L78 Accepts]: Start accepts. Automaton has 3214 states and 5693 transitions. Word has length 111 [2023-12-20 11:44:41,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:44:41,098 INFO L495 AbstractCegarLoop]: Abstraction has 3214 states and 5693 transitions. [2023-12-20 11:44:41,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 11:44:41,098 INFO L276 IsEmpty]: Start isEmpty. Operand 3214 states and 5693 transitions. [2023-12-20 11:44:41,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-20 11:44:41,101 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:44:41,101 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] [2023-12-20 11:44:41,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 11:44:41,102 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:44:41,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:44:41,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1889027913, now seen corresponding path program 1 times [2023-12-20 11:44:41,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:44:41,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500123707] [2023-12-20 11:44:41,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:44:41,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:44:41,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:41,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:44:41,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:41,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 11:44:41,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:41,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 11:44:41,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:41,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 11:44:41,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:41,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 11:44:41,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:41,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:44:41,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:44:41,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500123707] [2023-12-20 11:44:41,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500123707] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:44:41,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:44:41,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:44:41,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507502283] [2023-12-20 11:44:41,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:44:41,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:44:41,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:44:41,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:44:41,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:44:41,260 INFO L87 Difference]: Start difference. First operand 3214 states and 5693 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 11:44:42,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:44:42,231 INFO L93 Difference]: Finished difference Result 4707 states and 8137 transitions. [2023-12-20 11:44:42,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 11:44:42,232 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2023-12-20 11:44:42,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:44:42,243 INFO L225 Difference]: With dead ends: 4707 [2023-12-20 11:44:42,243 INFO L226 Difference]: Without dead ends: 3627 [2023-12-20 11:44:42,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 11:44:42,248 INFO L413 NwaCegarLoop]: 4124 mSDtfsCounter, 4643 mSDsluCounter, 16334 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4658 SdHoareTripleChecker+Valid, 20458 SdHoareTripleChecker+Invalid, 1244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 11:44:42,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4658 Valid, 20458 Invalid, 1244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1189 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 11:44:42,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3627 states. [2023-12-20 11:44:42,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3627 to 3214. [2023-12-20 11:44:42,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3214 states, 3093 states have (on average 1.7798254122211445) internal successors, (5505), 3099 states have internal predecessors, (5505), 85 states have call successors, (85), 30 states have call predecessors, (85), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2023-12-20 11:44:42,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3214 states to 3214 states and 5688 transitions. [2023-12-20 11:44:42,327 INFO L78 Accepts]: Start accepts. Automaton has 3214 states and 5688 transitions. Word has length 111 [2023-12-20 11:44:42,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:44:42,328 INFO L495 AbstractCegarLoop]: Abstraction has 3214 states and 5688 transitions. [2023-12-20 11:44:42,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 11:44:42,329 INFO L276 IsEmpty]: Start isEmpty. Operand 3214 states and 5688 transitions. [2023-12-20 11:44:42,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-20 11:44:42,330 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:44:42,330 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] [2023-12-20 11:44:42,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 11:44:42,330 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:44:42,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:44:42,330 INFO L85 PathProgramCache]: Analyzing trace with hash 465357369, now seen corresponding path program 1 times [2023-12-20 11:44:42,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:44:42,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638916991] [2023-12-20 11:44:42,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:44:42,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:44:42,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:42,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:44:42,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:42,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 11:44:42,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:42,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 11:44:42,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:42,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 11:44:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:42,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 11:44:42,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:42,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:44:42,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:44:42,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638916991] [2023-12-20 11:44:42,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638916991] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:44:42,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:44:42,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:44:42,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126556034] [2023-12-20 11:44:42,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:44:42,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:44:42,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:44:42,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:44:42,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:44:42,471 INFO L87 Difference]: Start difference. First operand 3214 states and 5688 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 11:44:43,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:44:43,316 INFO L93 Difference]: Finished difference Result 4700 states and 8109 transitions. [2023-12-20 11:44:43,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 11:44:43,317 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2023-12-20 11:44:43,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:44:43,338 INFO L225 Difference]: With dead ends: 4700 [2023-12-20 11:44:43,338 INFO L226 Difference]: Without dead ends: 3620 [2023-12-20 11:44:43,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 11:44:43,344 INFO L413 NwaCegarLoop]: 4124 mSDtfsCounter, 4744 mSDsluCounter, 12269 mSDsCounter, 0 mSdLazyCounter, 1050 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4759 SdHoareTripleChecker+Valid, 16393 SdHoareTripleChecker+Invalid, 1126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 11:44:43,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4759 Valid, 16393 Invalid, 1126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1050 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 11:44:43,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3620 states. [2023-12-20 11:44:43,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3620 to 3214. [2023-12-20 11:44:43,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3214 states, 3093 states have (on average 1.7782088587132234) internal successors, (5500), 3099 states have internal predecessors, (5500), 85 states have call successors, (85), 30 states have call predecessors, (85), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2023-12-20 11:44:43,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3214 states to 3214 states and 5683 transitions. [2023-12-20 11:44:43,408 INFO L78 Accepts]: Start accepts. Automaton has 3214 states and 5683 transitions. Word has length 111 [2023-12-20 11:44:43,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:44:43,409 INFO L495 AbstractCegarLoop]: Abstraction has 3214 states and 5683 transitions. [2023-12-20 11:44:43,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 11:44:43,409 INFO L276 IsEmpty]: Start isEmpty. Operand 3214 states and 5683 transitions. [2023-12-20 11:44:43,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-20 11:44:43,410 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:44:43,410 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] [2023-12-20 11:44:43,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 11:44:43,410 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:44:43,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:44:43,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1952546697, now seen corresponding path program 1 times [2023-12-20 11:44:43,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:44:43,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378977327] [2023-12-20 11:44:43,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:44:43,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:44:43,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:43,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:44:43,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:43,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 11:44:43,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:43,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 11:44:43,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:43,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 11:44:43,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:43,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 11:44:43,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:43,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:44:43,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:44:43,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378977327] [2023-12-20 11:44:43,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378977327] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:44:43,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:44:43,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:44:43,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332287509] [2023-12-20 11:44:43,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:44:43,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:44:43,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:44:43,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:44:43,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:44:43,540 INFO L87 Difference]: Start difference. First operand 3214 states and 5683 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 11:44:44,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:44:44,587 INFO L93 Difference]: Finished difference Result 4688 states and 8071 transitions. [2023-12-20 11:44:44,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 11:44:44,588 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2023-12-20 11:44:44,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:44:44,617 INFO L225 Difference]: With dead ends: 4688 [2023-12-20 11:44:44,617 INFO L226 Difference]: Without dead ends: 3608 [2023-12-20 11:44:44,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 11:44:44,621 INFO L413 NwaCegarLoop]: 4124 mSDtfsCounter, 4643 mSDsluCounter, 16334 mSDsCounter, 0 mSdLazyCounter, 1144 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4658 SdHoareTripleChecker+Valid, 20458 SdHoareTripleChecker+Invalid, 1199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 11:44:44,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4658 Valid, 20458 Invalid, 1199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1144 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 11:44:44,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3608 states. [2023-12-20 11:44:44,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3608 to 3214. [2023-12-20 11:44:44,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3214 states, 3093 states have (on average 1.7765923052053023) internal successors, (5495), 3099 states have internal predecessors, (5495), 85 states have call successors, (85), 30 states have call predecessors, (85), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2023-12-20 11:44:44,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3214 states to 3214 states and 5678 transitions. [2023-12-20 11:44:44,695 INFO L78 Accepts]: Start accepts. Automaton has 3214 states and 5678 transitions. Word has length 111 [2023-12-20 11:44:44,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:44:44,696 INFO L495 AbstractCegarLoop]: Abstraction has 3214 states and 5678 transitions. [2023-12-20 11:44:44,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 11:44:44,696 INFO L276 IsEmpty]: Start isEmpty. Operand 3214 states and 5678 transitions. [2023-12-20 11:44:44,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-20 11:44:44,697 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:44:44,697 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] [2023-12-20 11:44:44,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 11:44:44,697 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:44:44,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:44:44,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1347726901, now seen corresponding path program 1 times [2023-12-20 11:44:44,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:44:44,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209314881] [2023-12-20 11:44:44,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:44:44,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:44:44,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:44,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:44:44,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:44,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 11:44:44,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:44,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 11:44:44,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:44,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 11:44:44,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:44,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 11:44:44,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:44,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:44:44,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:44:44,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209314881] [2023-12-20 11:44:44,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209314881] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:44:44,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:44:44,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:44:44,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631201259] [2023-12-20 11:44:44,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:44:44,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:44:44,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:44:44,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:44:44,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:44:44,845 INFO L87 Difference]: Start difference. First operand 3214 states and 5678 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 11:44:46,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:44:46,880 INFO L93 Difference]: Finished difference Result 6166 states and 10402 transitions. [2023-12-20 11:44:46,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:44:46,881 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2023-12-20 11:44:46,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:44:46,892 INFO L225 Difference]: With dead ends: 6166 [2023-12-20 11:44:46,892 INFO L226 Difference]: Without dead ends: 5086 [2023-12-20 11:44:46,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 11:44:46,896 INFO L413 NwaCegarLoop]: 4266 mSDtfsCounter, 5132 mSDsluCounter, 16831 mSDsCounter, 0 mSdLazyCounter, 2229 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5154 SdHoareTripleChecker+Valid, 21097 SdHoareTripleChecker+Invalid, 2285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 11:44:46,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5154 Valid, 21097 Invalid, 2285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 2229 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 11:44:46,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5086 states. [2023-12-20 11:44:46,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5086 to 4075. [2023-12-20 11:44:46,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4075 states, 3866 states have (on average 1.734092084842214) internal successors, (6704), 3876 states have internal predecessors, (6704), 145 states have call successors, (145), 54 states have call predecessors, (145), 62 states have return successors, (180), 152 states have call predecessors, (180), 145 states have call successors, (180) [2023-12-20 11:44:46,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4075 states to 4075 states and 7029 transitions. [2023-12-20 11:44:46,994 INFO L78 Accepts]: Start accepts. Automaton has 4075 states and 7029 transitions. Word has length 111 [2023-12-20 11:44:46,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:44:46,994 INFO L495 AbstractCegarLoop]: Abstraction has 4075 states and 7029 transitions. [2023-12-20 11:44:46,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 11:44:46,995 INFO L276 IsEmpty]: Start isEmpty. Operand 4075 states and 7029 transitions. [2023-12-20 11:44:46,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-20 11:44:46,996 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:44:46,996 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] [2023-12-20 11:44:46,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 11:44:46,997 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:44:46,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:44:46,997 INFO L85 PathProgramCache]: Analyzing trace with hash 761450679, now seen corresponding path program 1 times [2023-12-20 11:44:46,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:44:46,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605067701] [2023-12-20 11:44:46,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:44:46,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:44:47,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:47,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:44:47,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:47,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 11:44:47,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:47,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 11:44:47,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:47,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 11:44:47,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:47,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 11:44:47,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:47,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:44:47,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:44:47,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605067701] [2023-12-20 11:44:47,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605067701] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:44:47,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:44:47,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:44:47,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078916988] [2023-12-20 11:44:47,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:44:47,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:44:47,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:44:47,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:44:47,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:44:47,134 INFO L87 Difference]: Start difference. First operand 4075 states and 7029 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 11:44:49,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:44:49,441 INFO L93 Difference]: Finished difference Result 9483 states and 15673 transitions. [2023-12-20 11:44:49,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:44:49,441 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2023-12-20 11:44:49,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:44:49,459 INFO L225 Difference]: With dead ends: 9483 [2023-12-20 11:44:49,460 INFO L226 Difference]: Without dead ends: 7542 [2023-12-20 11:44:49,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 11:44:49,466 INFO L413 NwaCegarLoop]: 4265 mSDtfsCounter, 4927 mSDsluCounter, 16828 mSDsCounter, 0 mSdLazyCounter, 2612 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4940 SdHoareTripleChecker+Valid, 21093 SdHoareTripleChecker+Invalid, 2667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-20 11:44:49,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4940 Valid, 21093 Invalid, 2667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2612 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 11:44:49,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7542 states. [2023-12-20 11:44:49,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7542 to 5746. [2023-12-20 11:44:49,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5746 states, 5365 states have (on average 1.6857409133271202) internal successors, (9044), 5383 states have internal predecessors, (9044), 261 states have call successors, (261), 102 states have call predecessors, (261), 118 states have return successors, (358), 276 states have call predecessors, (358), 261 states have call successors, (358) [2023-12-20 11:44:49,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5746 states to 5746 states and 9663 transitions. [2023-12-20 11:44:49,622 INFO L78 Accepts]: Start accepts. Automaton has 5746 states and 9663 transitions. Word has length 111 [2023-12-20 11:44:49,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:44:49,622 INFO L495 AbstractCegarLoop]: Abstraction has 5746 states and 9663 transitions. [2023-12-20 11:44:49,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 11:44:49,623 INFO L276 IsEmpty]: Start isEmpty. Operand 5746 states and 9663 transitions. [2023-12-20 11:44:49,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-20 11:44:49,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:44:49,626 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] [2023-12-20 11:44:49,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 11:44:49,626 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:44:49,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:44:49,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1197124107, now seen corresponding path program 1 times [2023-12-20 11:44:49,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:44:49,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706664075] [2023-12-20 11:44:49,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:44:49,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:44:49,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:49,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:44:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:49,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 11:44:49,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:49,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 11:44:49,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:49,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 11:44:49,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:49,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 11:44:49,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:49,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:44:49,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:44:49,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706664075] [2023-12-20 11:44:49,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706664075] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:44:49,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:44:49,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:44:49,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907626976] [2023-12-20 11:44:49,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:44:49,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:44:49,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:44:49,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:44:49,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:44:49,752 INFO L87 Difference]: Start difference. First operand 5746 states and 9663 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 11:44:51,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:44:51,891 INFO L93 Difference]: Finished difference Result 15876 states and 25869 transitions. [2023-12-20 11:44:51,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:44:51,892 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2023-12-20 11:44:51,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:44:51,925 INFO L225 Difference]: With dead ends: 15876 [2023-12-20 11:44:51,925 INFO L226 Difference]: Without dead ends: 12264 [2023-12-20 11:44:51,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 11:44:51,938 INFO L413 NwaCegarLoop]: 4266 mSDtfsCounter, 5060 mSDsluCounter, 16831 mSDsCounter, 0 mSdLazyCounter, 2203 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5082 SdHoareTripleChecker+Valid, 21097 SdHoareTripleChecker+Invalid, 2259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 11:44:51,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5082 Valid, 21097 Invalid, 2259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 2203 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 11:44:51,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12264 states. [2023-12-20 11:44:52,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12264 to 9127. [2023-12-20 11:44:52,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9127 states, 8410 states have (on average 1.641141498216409) internal successors, (13802), 8444 states have internal predecessors, (13802), 485 states have call successors, (485), 198 states have call predecessors, (485), 230 states have return successors, (760), 516 states have call predecessors, (760), 485 states have call successors, (760) [2023-12-20 11:44:52,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9127 states to 9127 states and 15047 transitions. [2023-12-20 11:44:52,319 INFO L78 Accepts]: Start accepts. Automaton has 9127 states and 15047 transitions. Word has length 111 [2023-12-20 11:44:52,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:44:52,319 INFO L495 AbstractCegarLoop]: Abstraction has 9127 states and 15047 transitions. [2023-12-20 11:44:52,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 11:44:52,320 INFO L276 IsEmpty]: Start isEmpty. Operand 9127 states and 15047 transitions. [2023-12-20 11:44:52,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-20 11:44:52,324 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:44:52,324 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] [2023-12-20 11:44:52,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 11:44:52,324 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:44:52,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:44:52,324 INFO L85 PathProgramCache]: Analyzing trace with hash 679358711, now seen corresponding path program 1 times [2023-12-20 11:44:52,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:44:52,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523702529] [2023-12-20 11:44:52,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:44:52,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:44:52,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:52,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:44:52,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:52,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 11:44:52,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:52,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 11:44:52,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:52,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 11:44:52,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:52,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 11:44:52,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:52,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:44:52,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:44:52,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523702529] [2023-12-20 11:44:52,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523702529] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:44:52,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:44:52,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:44:52,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076264057] [2023-12-20 11:44:52,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:44:52,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:44:52,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:44:52,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:44:52,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:44:52,439 INFO L87 Difference]: Start difference. First operand 9127 states and 15047 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 11:44:54,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:44:54,453 INFO L93 Difference]: Finished difference Result 28527 states and 46239 transitions. [2023-12-20 11:44:54,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:44:54,454 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2023-12-20 11:44:54,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:44:54,511 INFO L225 Difference]: With dead ends: 28527 [2023-12-20 11:44:54,511 INFO L226 Difference]: Without dead ends: 21534 [2023-12-20 11:44:54,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 11:44:54,537 INFO L413 NwaCegarLoop]: 4266 mSDtfsCounter, 5024 mSDsluCounter, 16831 mSDsCounter, 0 mSdLazyCounter, 2190 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5046 SdHoareTripleChecker+Valid, 21097 SdHoareTripleChecker+Invalid, 2246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 11:44:54,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5046 Valid, 21097 Invalid, 2246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 2190 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 11:44:54,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21534 states. [2023-12-20 11:44:55,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21534 to 15888. [2023-12-20 11:44:55,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15888 states, 14515 states have (on average 1.608542886668963) internal successors, (23348), 14581 states have internal predecessors, (23348), 917 states have call successors, (917), 390 states have call predecessors, (917), 454 states have return successors, (1710), 980 states have call predecessors, (1710), 917 states have call successors, (1710) [2023-12-20 11:44:55,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15888 states to 15888 states and 25975 transitions. [2023-12-20 11:44:55,223 INFO L78 Accepts]: Start accepts. Automaton has 15888 states and 25975 transitions. Word has length 111 [2023-12-20 11:44:55,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:44:55,223 INFO L495 AbstractCegarLoop]: Abstraction has 15888 states and 25975 transitions. [2023-12-20 11:44:55,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 11:44:55,223 INFO L276 IsEmpty]: Start isEmpty. Operand 15888 states and 25975 transitions. [2023-12-20 11:44:55,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-20 11:44:55,232 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:44:55,232 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] [2023-12-20 11:44:55,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 11:44:55,232 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:44:55,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:44:55,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1199772235, now seen corresponding path program 1 times [2023-12-20 11:44:55,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:44:55,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242378376] [2023-12-20 11:44:55,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:44:55,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:44:55,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:55,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:44:55,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:55,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 11:44:55,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:55,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 11:44:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:55,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 11:44:55,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:55,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 11:44:55,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:55,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:44:55,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:44:55,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242378376] [2023-12-20 11:44:55,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242378376] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:44:55,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:44:55,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:44:55,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099487141] [2023-12-20 11:44:55,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:44:55,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:44:55,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:44:55,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:44:55,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:44:55,395 INFO L87 Difference]: Start difference. First operand 15888 states and 25975 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 11:44:58,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:44:58,062 INFO L93 Difference]: Finished difference Result 53350 states and 86797 transitions. [2023-12-20 11:44:58,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:44:58,063 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2023-12-20 11:44:58,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:44:58,142 INFO L225 Difference]: With dead ends: 53350 [2023-12-20 11:44:58,143 INFO L226 Difference]: Without dead ends: 39596 [2023-12-20 11:44:58,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 11:44:58,171 INFO L413 NwaCegarLoop]: 4266 mSDtfsCounter, 4898 mSDsluCounter, 16831 mSDsCounter, 0 mSdLazyCounter, 2436 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4911 SdHoareTripleChecker+Valid, 21097 SdHoareTripleChecker+Invalid, 2491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 11:44:58,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4911 Valid, 21097 Invalid, 2491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2436 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 11:44:58,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39596 states. [2023-12-20 11:44:59,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39596 to 29409. [2023-12-20 11:44:59,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29409 states, 26756 states have (on average 1.5885035132306773) internal successors, (42502), 26886 states have internal predecessors, (42502), 1749 states have call successors, (1749), 774 states have call predecessors, (1749), 902 states have return successors, (4064), 1876 states have call predecessors, (4064), 1749 states have call successors, (4064) [2023-12-20 11:44:59,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29409 states to 29409 states and 48315 transitions. [2023-12-20 11:44:59,319 INFO L78 Accepts]: Start accepts. Automaton has 29409 states and 48315 transitions. Word has length 111 [2023-12-20 11:44:59,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:44:59,320 INFO L495 AbstractCegarLoop]: Abstraction has 29409 states and 48315 transitions. [2023-12-20 11:44:59,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 11:44:59,320 INFO L276 IsEmpty]: Start isEmpty. Operand 29409 states and 48315 transitions. [2023-12-20 11:44:59,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-20 11:44:59,335 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:44:59,335 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] [2023-12-20 11:44:59,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 11:44:59,335 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:44:59,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:44:59,335 INFO L85 PathProgramCache]: Analyzing trace with hash 125083959, now seen corresponding path program 1 times [2023-12-20 11:44:59,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:44:59,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421846386] [2023-12-20 11:44:59,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:44:59,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:44:59,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:59,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:44:59,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:59,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 11:44:59,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:59,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 11:44:59,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:59,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 11:44:59,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:59,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 11:44:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:44:59,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:44:59,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:44:59,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421846386] [2023-12-20 11:44:59,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421846386] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:44:59,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:44:59,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:44:59,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940123008] [2023-12-20 11:44:59,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:44:59,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:44:59,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:44:59,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:44:59,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:44:59,451 INFO L87 Difference]: Start difference. First operand 29409 states and 48315 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 11:45:02,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:45:02,665 INFO L93 Difference]: Finished difference Result 102037 states and 168195 transitions. [2023-12-20 11:45:02,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:45:02,665 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2023-12-20 11:45:02,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:45:02,913 INFO L225 Difference]: With dead ends: 102037 [2023-12-20 11:45:02,913 INFO L226 Difference]: Without dead ends: 74762 [2023-12-20 11:45:02,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 11:45:02,983 INFO L413 NwaCegarLoop]: 4266 mSDtfsCounter, 4958 mSDsluCounter, 16831 mSDsCounter, 0 mSdLazyCounter, 2159 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4980 SdHoareTripleChecker+Valid, 21097 SdHoareTripleChecker+Invalid, 2215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 11:45:02,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4980 Valid, 21097 Invalid, 2215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 2159 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 11:45:03,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74762 states. [2023-12-20 11:45:05,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74762 to 56450. [2023-12-20 11:45:05,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56450 states, 51301 states have (on average 1.57766905128555) internal successors, (80936), 51559 states have internal predecessors, (80936), 3349 states have call successors, (3349), 1542 states have call predecessors, (3349), 1798 states have return successors, (10166), 3604 states have call predecessors, (10166), 3349 states have call successors, (10166) [2023-12-20 11:45:05,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56450 states to 56450 states and 94451 transitions. [2023-12-20 11:45:05,269 INFO L78 Accepts]: Start accepts. Automaton has 56450 states and 94451 transitions. Word has length 111 [2023-12-20 11:45:05,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:45:05,270 INFO L495 AbstractCegarLoop]: Abstraction has 56450 states and 94451 transitions. [2023-12-20 11:45:05,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 11:45:05,270 INFO L276 IsEmpty]: Start isEmpty. Operand 56450 states and 94451 transitions. [2023-12-20 11:45:05,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-20 11:45:05,301 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:45:05,301 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] [2023-12-20 11:45:05,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 11:45:05,301 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:45:05,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:45:05,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1691841909, now seen corresponding path program 1 times [2023-12-20 11:45:05,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:45:05,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813700935] [2023-12-20 11:45:05,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:45:05,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:45:05,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:05,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:45:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:05,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 11:45:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:05,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 11:45:05,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:05,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 11:45:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:05,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 11:45:05,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:05,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:45:05,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:45:05,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813700935] [2023-12-20 11:45:05,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813700935] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:45:05,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:45:05,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:45:05,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965975039] [2023-12-20 11:45:05,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:45:05,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:45:05,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:45:05,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:45:05,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:45:05,416 INFO L87 Difference]: Start difference. First operand 56450 states and 94451 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 11:45:10,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:45:10,122 INFO L93 Difference]: Finished difference Result 194162 states and 328373 transitions. [2023-12-20 11:45:10,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:45:10,122 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2023-12-20 11:45:10,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:45:10,577 INFO L225 Difference]: With dead ends: 194162 [2023-12-20 11:45:10,577 INFO L226 Difference]: Without dead ends: 139846 [2023-12-20 11:45:10,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 11:45:10,688 INFO L413 NwaCegarLoop]: 4266 mSDtfsCounter, 4880 mSDsluCounter, 16831 mSDsCounter, 0 mSdLazyCounter, 2130 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4902 SdHoareTripleChecker+Valid, 21097 SdHoareTripleChecker+Invalid, 2187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 11:45:10,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4902 Valid, 21097 Invalid, 2187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2130 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 11:45:10,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139846 states. [2023-12-20 11:45:15,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139846 to 110788. [2023-12-20 11:45:15,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110788 states, 100775 states have (on average 1.5735251798561152) internal successors, (158572), 101289 states have internal predecessors, (158572), 6421 states have call successors, (6421), 3078 states have call predecessors, (6421), 3590 states have return successors, (26616), 6932 states have call predecessors, (26616), 6421 states have call successors, (26616) [2023-12-20 11:45:16,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110788 states to 110788 states and 191609 transitions. [2023-12-20 11:45:16,127 INFO L78 Accepts]: Start accepts. Automaton has 110788 states and 191609 transitions. Word has length 111 [2023-12-20 11:45:16,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:45:16,128 INFO L495 AbstractCegarLoop]: Abstraction has 110788 states and 191609 transitions. [2023-12-20 11:45:16,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 11:45:16,128 INFO L276 IsEmpty]: Start isEmpty. Operand 110788 states and 191609 transitions. [2023-12-20 11:45:16,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-20 11:45:16,190 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:45:16,190 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] [2023-12-20 11:45:16,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 11:45:16,191 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:45:16,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:45:16,191 INFO L85 PathProgramCache]: Analyzing trace with hash 549339443, now seen corresponding path program 1 times [2023-12-20 11:45:16,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:45:16,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920528756] [2023-12-20 11:45:16,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:45:16,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:45:16,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:16,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:45:16,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:16,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 11:45:16,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:16,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 11:45:16,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:16,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 11:45:16,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:16,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 11:45:16,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:16,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:45:16,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:45:16,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920528756] [2023-12-20 11:45:16,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920528756] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:45:16,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:45:16,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:45:16,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63745904] [2023-12-20 11:45:16,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:45:16,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:45:16,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:45:16,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:45:16,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:45:16,301 INFO L87 Difference]: Start difference. First operand 110788 states and 191609 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 11:45:23,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:45:23,607 INFO L93 Difference]: Finished difference Result 320963 states and 547167 transitions. [2023-12-20 11:45:23,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-20 11:45:23,607 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2023-12-20 11:45:23,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:45:24,609 INFO L225 Difference]: With dead ends: 320963 [2023-12-20 11:45:24,609 INFO L226 Difference]: Without dead ends: 212310 [2023-12-20 11:45:24,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2023-12-20 11:45:24,900 INFO L413 NwaCegarLoop]: 4157 mSDtfsCounter, 4927 mSDsluCounter, 16518 mSDsCounter, 0 mSdLazyCounter, 1566 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4949 SdHoareTripleChecker+Valid, 20675 SdHoareTripleChecker+Invalid, 1654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 11:45:24,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4949 Valid, 20675 Invalid, 1654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1566 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 11:45:25,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212310 states. [2023-12-20 11:45:31,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212310 to 166117. [2023-12-20 11:45:31,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166117 states, 150961 states have (on average 1.5600916793079007) internal successors, (235513), 151988 states have internal predecessors, (235513), 9766 states have call successors, (9766), 4620 states have call predecessors, (9766), 5388 states have return successors, (36523), 10020 states have call predecessors, (36523), 9766 states have call successors, (36523) [2023-12-20 11:45:32,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166117 states to 166117 states and 281802 transitions. [2023-12-20 11:45:32,118 INFO L78 Accepts]: Start accepts. Automaton has 166117 states and 281802 transitions. Word has length 111 [2023-12-20 11:45:32,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:45:32,118 INFO L495 AbstractCegarLoop]: Abstraction has 166117 states and 281802 transitions. [2023-12-20 11:45:32,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 11:45:32,118 INFO L276 IsEmpty]: Start isEmpty. Operand 166117 states and 281802 transitions. [2023-12-20 11:45:32,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-20 11:45:32,888 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:45:32,888 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:45:32,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 11:45:32,889 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:45:32,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:45:32,889 INFO L85 PathProgramCache]: Analyzing trace with hash 876221865, now seen corresponding path program 1 times [2023-12-20 11:45:32,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:45:32,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236530432] [2023-12-20 11:45:32,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:45:32,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:45:32,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:32,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:45:32,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:32,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 11:45:32,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:32,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 11:45:32,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:33,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 11:45:33,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:33,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 11:45:33,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:33,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-20 11:45:33,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:33,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:45:33,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:33,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-12-20 11:45:33,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:33,028 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 11:45:33,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:45:33,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236530432] [2023-12-20 11:45:33,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236530432] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 11:45:33,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847143925] [2023-12-20 11:45:33,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:45:33,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 11:45:33,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 11:45:33,057 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 11:45:33,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 11:45:33,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:45:33,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 812 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 11:45:33,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 11:45:33,305 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-20 11:45:33,306 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 11:45:33,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847143925] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:45:33,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 11:45:33,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-20 11:45:33,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040025051] [2023-12-20 11:45:33,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:45:33,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 11:45:33,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:45:33,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 11:45:33,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:45:33,307 INFO L87 Difference]: Start difference. First operand 166117 states and 281802 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 11:45:43,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:45:43,726 INFO L93 Difference]: Finished difference Result 491768 states and 838218 transitions. [2023-12-20 11:45:43,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 11:45:43,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 179 [2023-12-20 11:45:43,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:45:45,307 INFO L225 Difference]: With dead ends: 491768 [2023-12-20 11:45:45,307 INFO L226 Difference]: Without dead ends: 327786 [2023-12-20 11:45:45,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:45:45,611 INFO L413 NwaCegarLoop]: 4289 mSDtfsCounter, 4262 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4262 SdHoareTripleChecker+Valid, 4595 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 11:45:45,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4262 Valid, 4595 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 11:45:45,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327786 states. [2023-12-20 11:45:57,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327786 to 327014. [2023-12-20 11:45:57,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327014 states, 297094 states have (on average 1.555208115949834) internal successors, (462043), 299146 states have internal predecessors, (462043), 19142 states have call successors, (19142), 9240 states have call predecessors, (19142), 10776 states have return successors, (72145), 19139 states have call predecessors, (72145), 19142 states have call successors, (72145) [2023-12-20 11:45:59,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327014 states to 327014 states and 553330 transitions. [2023-12-20 11:45:59,519 INFO L78 Accepts]: Start accepts. Automaton has 327014 states and 553330 transitions. Word has length 179 [2023-12-20 11:45:59,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:45:59,520 INFO L495 AbstractCegarLoop]: Abstraction has 327014 states and 553330 transitions. [2023-12-20 11:45:59,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 11:45:59,520 INFO L276 IsEmpty]: Start isEmpty. Operand 327014 states and 553330 transitions. [2023-12-20 11:46:00,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-20 11:46:00,391 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:46:00,391 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:46:00,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 11:46:00,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-20 11:46:00,597 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:46:00,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:46:00,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1119403367, now seen corresponding path program 1 times [2023-12-20 11:46:00,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:46:00,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097946022] [2023-12-20 11:46:00,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:46:00,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:46:00,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:46:00,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:46:00,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:46:00,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 11:46:00,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:46:00,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 11:46:00,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:46:00,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 11:46:00,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:46:00,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 11:46:00,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:46:00,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-20 11:46:00,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:46:00,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:46:00,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:46:00,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-12-20 11:46:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:46:00,782 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 11:46:00,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:46:00,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097946022] [2023-12-20 11:46:00,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097946022] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 11:46:00,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854056971] [2023-12-20 11:46:00,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:46:00,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 11:46:00,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 11:46:00,786 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 11:46:00,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 11:46:00,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:46:00,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 11:46:00,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 11:46:01,038 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-20 11:46:01,038 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 11:46:01,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854056971] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:46:01,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 11:46:01,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-20 11:46:01,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408961745] [2023-12-20 11:46:01,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:46:01,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 11:46:01,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:46:01,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 11:46:01,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:46:01,041 INFO L87 Difference]: Start difference. First operand 327014 states and 553330 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 11:46:22,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:46:22,686 INFO L93 Difference]: Finished difference Result 970575 states and 1650584 transitions. [2023-12-20 11:46:22,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 11:46:22,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 179 [2023-12-20 11:46:22,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:46:26,489 INFO L225 Difference]: With dead ends: 970575 [2023-12-20 11:46:26,489 INFO L226 Difference]: Without dead ends: 645696 [2023-12-20 11:46:27,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:46:27,404 INFO L413 NwaCegarLoop]: 4289 mSDtfsCounter, 4252 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4252 SdHoareTripleChecker+Valid, 4595 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 11:46:27,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4252 Valid, 4595 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 11:46:27,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645696 states. [2023-12-20 11:46:51,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645696 to 644154. [2023-12-20 11:46:52,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644154 states, 585884 states have (on average 1.5520427251810938) internal successors, (909317), 589986 states have internal predecessors, (909317), 36728 states have call successors, (36728), 18468 states have call predecessors, (36728), 21540 states have return successors, (142223), 36211 states have call predecessors, (142223), 36728 states have call successors, (142223)