/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.13.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 01:32:57,621 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 01:32:57,694 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 01:32:57,699 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 01:32:57,700 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 01:32:57,715 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 01:32:57,716 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 01:32:57,716 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 01:32:57,717 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 01:32:57,717 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 01:32:57,717 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 01:32:57,717 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 01:32:57,718 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 01:32:57,718 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 01:32:57,718 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 01:32:57,719 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 01:32:57,719 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 01:32:57,719 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 01:32:57,719 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 01:32:57,719 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 01:32:57,720 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 01:32:57,720 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 01:32:57,720 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 01:32:57,721 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 01:32:57,721 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 01:32:57,721 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 01:32:57,721 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 01:32:57,721 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 01:32:57,721 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 01:32:57,722 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 01:32:57,722 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 01:32:57,722 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 01:32:57,722 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:32:57,722 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 01:32:57,723 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 01:32:57,723 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 01:32:57,723 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 01:32:57,723 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 01:32:57,723 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 01:32:57,723 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 01:32:57,723 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 01:32:57,724 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 01:32:57,724 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 01:32:57,724 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 01:32:57,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 01:32:57,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 01:32:57,952 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 01:32:57,953 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 01:32:57,953 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 01:32:57,954 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.13.cil-2.c [2023-12-19 01:32:59,159 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 01:32:59,375 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 01:32:59,375 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.13.cil-2.c [2023-12-19 01:32:59,400 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f6bc39d8/b4e7a0c3a7234d96bc5215ba258a3734/FLAGb0968fe32 [2023-12-19 01:32:59,411 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f6bc39d8/b4e7a0c3a7234d96bc5215ba258a3734 [2023-12-19 01:32:59,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 01:32:59,417 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 01:32:59,419 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 01:32:59,419 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 01:32:59,424 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 01:32:59,424 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:32:59" (1/1) ... [2023-12-19 01:32:59,425 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5332bf2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:32:59, skipping insertion in model container [2023-12-19 01:32:59,425 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:32:59" (1/1) ... [2023-12-19 01:32:59,472 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 01:32:59,617 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/pc_sfifo_1.cil-2+token_ring.13.cil-2.c[913,926] [2023-12-19 01:32:59,671 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/pc_sfifo_1.cil-2+token_ring.13.cil-2.c[5977,5990] [2023-12-19 01:32:59,789 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:32:59,799 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 01:32:59,811 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/pc_sfifo_1.cil-2+token_ring.13.cil-2.c[913,926] [2023-12-19 01:32:59,827 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/pc_sfifo_1.cil-2+token_ring.13.cil-2.c[5977,5990] [2023-12-19 01:32:59,868 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:32:59,890 INFO L206 MainTranslator]: Completed translation [2023-12-19 01:32:59,890 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:32:59 WrapperNode [2023-12-19 01:32:59,891 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 01:32:59,891 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 01:32:59,892 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 01:32:59,892 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 01:32:59,897 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:32:59" (1/1) ... [2023-12-19 01:32:59,908 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:32:59" (1/1) ... [2023-12-19 01:32:59,947 INFO L138 Inliner]: procedures = 74, calls = 87, calls flagged for inlining = 49, calls inlined = 49, statements flattened = 1143 [2023-12-19 01:32:59,947 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 01:32:59,948 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 01:32:59,948 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 01:32:59,948 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 01:32:59,972 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:32:59" (1/1) ... [2023-12-19 01:32:59,972 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:32:59" (1/1) ... [2023-12-19 01:32:59,976 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:32:59" (1/1) ... [2023-12-19 01:33:00,008 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]. [2023-12-19 01:33:00,009 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:32:59" (1/1) ... [2023-12-19 01:33:00,009 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:32:59" (1/1) ... [2023-12-19 01:33:00,024 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:32:59" (1/1) ... [2023-12-19 01:33:00,050 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:32:59" (1/1) ... [2023-12-19 01:33:00,053 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:32:59" (1/1) ... [2023-12-19 01:33:00,055 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:32:59" (1/1) ... [2023-12-19 01:33:00,060 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 01:33:00,061 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 01:33:00,061 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 01:33:00,061 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 01:33:00,061 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:32:59" (1/1) ... [2023-12-19 01:33:00,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:33:00,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:33:00,109 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) [2023-12-19 01:33:00,176 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 [2023-12-19 01:33:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 01:33:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-19 01:33:00,191 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-19 01:33:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2023-12-19 01:33:00,191 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2023-12-19 01:33:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-19 01:33:00,191 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-19 01:33:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-19 01:33:00,191 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-19 01:33:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-19 01:33:00,192 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-19 01:33:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-19 01:33:00,192 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-19 01:33:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-19 01:33:00,192 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-19 01:33:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 01:33:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-19 01:33:00,192 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-19 01:33:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 01:33:00,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 01:33:00,193 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-19 01:33:00,193 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-19 01:33:00,324 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 01:33:00,327 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 01:33:01,181 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 01:33:01,246 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 01:33:01,247 INFO L309 CfgBuilder]: Removed 20 assume(true) statements. [2023-12-19 01:33:01,247 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:33:01 BoogieIcfgContainer [2023-12-19 01:33:01,248 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 01:33:01,250 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 01:33:01,250 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 01:33:01,252 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 01:33:01,253 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 01:32:59" (1/3) ... [2023-12-19 01:33:01,253 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@516eda2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:33:01, skipping insertion in model container [2023-12-19 01:33:01,253 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:32:59" (2/3) ... [2023-12-19 01:33:01,253 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@516eda2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:33:01, skipping insertion in model container [2023-12-19 01:33:01,254 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:33:01" (3/3) ... [2023-12-19 01:33:01,255 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.13.cil-2.c [2023-12-19 01:33:01,268 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 01:33:01,268 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-19 01:33:01,327 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 01:33:01,333 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;@2fec9256, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 01:33:01,333 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-19 01:33:01,341 INFO L276 IsEmpty]: Start isEmpty. Operand has 434 states, 389 states have (on average 1.7275064267352185) internal successors, (672), 394 states have internal predecessors, (672), 33 states have call successors, (33), 9 states have call predecessors, (33), 9 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-19 01:33:01,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-19 01:33:01,350 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:01,350 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] [2023-12-19 01:33:01,351 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:01,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:01,356 INFO L85 PathProgramCache]: Analyzing trace with hash -995552835, now seen corresponding path program 1 times [2023-12-19 01:33:01,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:01,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013683418] [2023-12-19 01:33:01,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:01,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:01,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:01,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:33:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:01,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:33:01,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:01,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:01,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:01,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013683418] [2023-12-19 01:33:01,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013683418] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:01,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:01,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:33:01,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345009] [2023-12-19 01:33:01,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:01,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:33:01,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:01,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:33:01,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:33:01,727 INFO L87 Difference]: Start difference. First operand has 434 states, 389 states have (on average 1.7275064267352185) internal successors, (672), 394 states have internal predecessors, (672), 33 states have call successors, (33), 9 states have call predecessors, (33), 9 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-19 01:33:02,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:02,442 INFO L93 Difference]: Finished difference Result 853 states and 1444 transitions. [2023-12-19 01:33:02,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 01:33:02,445 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2023-12-19 01:33:02,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:02,462 INFO L225 Difference]: With dead ends: 853 [2023-12-19 01:33:02,463 INFO L226 Difference]: Without dead ends: 437 [2023-12-19 01:33:02,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:33:02,476 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 381 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:02,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 942 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 01:33:02,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2023-12-19 01:33:02,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 429. [2023-12-19 01:33:02,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 386 states have (on average 1.616580310880829) internal successors, (624), 389 states have internal predecessors, (624), 33 states have call successors, (33), 9 states have call predecessors, (33), 8 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-19 01:33:02,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 688 transitions. [2023-12-19 01:33:02,559 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 688 transitions. Word has length 37 [2023-12-19 01:33:02,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:02,560 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 688 transitions. [2023-12-19 01:33:02,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-19 01:33:02,561 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 688 transitions. [2023-12-19 01:33:02,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-19 01:33:02,563 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:02,563 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] [2023-12-19 01:33:02,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 01:33:02,563 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:02,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:02,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1248430463, now seen corresponding path program 1 times [2023-12-19 01:33:02,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:02,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757716252] [2023-12-19 01:33:02,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:02,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:02,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:02,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:33:02,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:02,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:33:02,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:02,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:02,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:02,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757716252] [2023-12-19 01:33:02,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757716252] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:02,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:02,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:33:02,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568432123] [2023-12-19 01:33:02,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:02,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:33:02,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:02,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:33:02,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:33:02,686 INFO L87 Difference]: Start difference. First operand 429 states and 688 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 01:33:03,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:03,173 INFO L93 Difference]: Finished difference Result 548 states and 860 transitions. [2023-12-19 01:33:03,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 01:33:03,174 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2023-12-19 01:33:03,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:03,176 INFO L225 Difference]: With dead ends: 548 [2023-12-19 01:33:03,177 INFO L226 Difference]: Without dead ends: 492 [2023-12-19 01:33:03,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:33:03,178 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 937 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:03,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [963 Valid, 723 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 01:33:03,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2023-12-19 01:33:03,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 486. [2023-12-19 01:33:03,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 436 states have (on average 1.5894495412844036) internal successors, (693), 440 states have internal predecessors, (693), 37 states have call successors, (37), 11 states have call predecessors, (37), 11 states have return successors, (41), 35 states have call predecessors, (41), 35 states have call successors, (41) [2023-12-19 01:33:03,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 771 transitions. [2023-12-19 01:33:03,204 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 771 transitions. Word has length 37 [2023-12-19 01:33:03,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:03,204 INFO L495 AbstractCegarLoop]: Abstraction has 486 states and 771 transitions. [2023-12-19 01:33:03,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 01:33:03,205 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 771 transitions. [2023-12-19 01:33:03,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-19 01:33:03,210 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:03,210 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] [2023-12-19 01:33:03,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 01:33:03,210 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:03,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:03,211 INFO L85 PathProgramCache]: Analyzing trace with hash -987178231, now seen corresponding path program 1 times [2023-12-19 01:33:03,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:03,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757777830] [2023-12-19 01:33:03,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:03,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:03,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:03,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:33:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:03,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:33:03,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:03,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:03,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:03,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757777830] [2023-12-19 01:33:03,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757777830] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:03,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:03,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:33:03,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293168583] [2023-12-19 01:33:03,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:03,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:33:03,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:03,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:33:03,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:33:03,284 INFO L87 Difference]: Start difference. First operand 486 states and 771 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 01:33:03,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:03,747 INFO L93 Difference]: Finished difference Result 720 states and 1115 transitions. [2023-12-19 01:33:03,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 01:33:03,748 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2023-12-19 01:33:03,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:03,751 INFO L225 Difference]: With dead ends: 720 [2023-12-19 01:33:03,751 INFO L226 Difference]: Without dead ends: 609 [2023-12-19 01:33:03,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:33:03,752 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 955 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:03,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [982 Valid, 730 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 01:33:03,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2023-12-19 01:33:03,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 586. [2023-12-19 01:33:03,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 523 states have (on average 1.5506692160611855) internal successors, (811), 528 states have internal predecessors, (811), 45 states have call successors, (45), 15 states have call predecessors, (45), 16 states have return successors, (55), 43 states have call predecessors, (55), 43 states have call successors, (55) [2023-12-19 01:33:03,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 911 transitions. [2023-12-19 01:33:03,804 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 911 transitions. Word has length 38 [2023-12-19 01:33:03,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:03,804 INFO L495 AbstractCegarLoop]: Abstraction has 586 states and 911 transitions. [2023-12-19 01:33:03,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 01:33:03,805 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 911 transitions. [2023-12-19 01:33:03,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-19 01:33:03,806 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:03,806 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] [2023-12-19 01:33:03,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 01:33:03,806 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:03,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:03,807 INFO L85 PathProgramCache]: Analyzing trace with hash -2057625110, now seen corresponding path program 1 times [2023-12-19 01:33:03,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:03,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979579940] [2023-12-19 01:33:03,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:03,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:03,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:03,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:33:03,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:03,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-19 01:33:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:03,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:03,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:03,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979579940] [2023-12-19 01:33:03,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979579940] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:03,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:03,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:33:03,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769575109] [2023-12-19 01:33:03,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:03,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:33:03,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:03,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:33:03,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:33:03,853 INFO L87 Difference]: Start difference. First operand 586 states and 911 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 01:33:04,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:04,329 INFO L93 Difference]: Finished difference Result 1006 states and 1492 transitions. [2023-12-19 01:33:04,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 01:33:04,330 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2023-12-19 01:33:04,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:04,334 INFO L225 Difference]: With dead ends: 1006 [2023-12-19 01:33:04,334 INFO L226 Difference]: Without dead ends: 795 [2023-12-19 01:33:04,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:33:04,342 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 364 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:04,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 1037 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 01:33:04,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2023-12-19 01:33:04,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 691. [2023-12-19 01:33:04,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 616 states have (on average 1.525974025974026) internal successors, (940), 623 states have internal predecessors, (940), 51 states have call successors, (51), 21 states have call predecessors, (51), 22 states have return successors, (61), 47 states have call predecessors, (61), 49 states have call successors, (61) [2023-12-19 01:33:04,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1052 transitions. [2023-12-19 01:33:04,379 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1052 transitions. Word has length 39 [2023-12-19 01:33:04,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:04,379 INFO L495 AbstractCegarLoop]: Abstraction has 691 states and 1052 transitions. [2023-12-19 01:33:04,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 01:33:04,380 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1052 transitions. [2023-12-19 01:33:04,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-19 01:33:04,381 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:04,381 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:33:04,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 01:33:04,381 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:04,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:04,382 INFO L85 PathProgramCache]: Analyzing trace with hash -961012926, now seen corresponding path program 1 times [2023-12-19 01:33:04,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:04,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972255658] [2023-12-19 01:33:04,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:04,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:04,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:04,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:33:04,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:04,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 01:33:04,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:04,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 01:33:04,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:04,482 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 01:33:04,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:04,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972255658] [2023-12-19 01:33:04,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972255658] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:04,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:04,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:33:04,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128858286] [2023-12-19 01:33:04,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:04,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:33:04,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:04,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:33:04,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:33:04,484 INFO L87 Difference]: Start difference. First operand 691 states and 1052 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-19 01:33:04,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:04,959 INFO L93 Difference]: Finished difference Result 996 states and 1474 transitions. [2023-12-19 01:33:04,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 01:33:04,960 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 54 [2023-12-19 01:33:04,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:04,963 INFO L225 Difference]: With dead ends: 996 [2023-12-19 01:33:04,963 INFO L226 Difference]: Without dead ends: 785 [2023-12-19 01:33:04,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:33:04,964 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 349 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:04,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 1082 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 01:33:04,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2023-12-19 01:33:04,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 751. [2023-12-19 01:33:04,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 667 states have (on average 1.5007496251874064) internal successors, (1001), 675 states have internal predecessors, (1001), 56 states have call successors, (56), 24 states have call predecessors, (56), 26 states have return successors, (70), 52 states have call predecessors, (70), 54 states have call successors, (70) [2023-12-19 01:33:04,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1127 transitions. [2023-12-19 01:33:04,990 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1127 transitions. Word has length 54 [2023-12-19 01:33:04,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:04,990 INFO L495 AbstractCegarLoop]: Abstraction has 751 states and 1127 transitions. [2023-12-19 01:33:04,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-19 01:33:04,990 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1127 transitions. [2023-12-19 01:33:04,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-19 01:33:04,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:04,991 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:33:04,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 01:33:04,992 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:04,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:04,992 INFO L85 PathProgramCache]: Analyzing trace with hash -691278202, now seen corresponding path program 1 times [2023-12-19 01:33:04,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:04,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928680801] [2023-12-19 01:33:04,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:04,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:05,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:05,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:33:05,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:05,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-19 01:33:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:05,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:33:05,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:05,038 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-19 01:33:05,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:05,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928680801] [2023-12-19 01:33:05,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928680801] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:05,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:05,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:33:05,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797112860] [2023-12-19 01:33:05,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:05,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:33:05,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:05,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:33:05,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:33:05,040 INFO L87 Difference]: Start difference. First operand 751 states and 1127 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-19 01:33:05,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:05,417 INFO L93 Difference]: Finished difference Result 1240 states and 1787 transitions. [2023-12-19 01:33:05,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 01:33:05,417 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 59 [2023-12-19 01:33:05,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:05,421 INFO L225 Difference]: With dead ends: 1240 [2023-12-19 01:33:05,421 INFO L226 Difference]: Without dead ends: 905 [2023-12-19 01:33:05,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:33:05,422 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 941 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:05,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [968 Valid, 742 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 01:33:05,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2023-12-19 01:33:05,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 856. [2023-12-19 01:33:05,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 759 states have (on average 1.4677206851119895) internal successors, (1114), 768 states have internal predecessors, (1114), 63 states have call successors, (63), 29 states have call predecessors, (63), 32 states have return successors, (81), 59 states have call predecessors, (81), 61 states have call successors, (81) [2023-12-19 01:33:05,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1258 transitions. [2023-12-19 01:33:05,452 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1258 transitions. Word has length 59 [2023-12-19 01:33:05,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:05,452 INFO L495 AbstractCegarLoop]: Abstraction has 856 states and 1258 transitions. [2023-12-19 01:33:05,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-19 01:33:05,453 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1258 transitions. [2023-12-19 01:33:05,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-19 01:33:05,454 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:05,454 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:33:05,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 01:33:05,454 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:05,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:05,454 INFO L85 PathProgramCache]: Analyzing trace with hash -286134322, now seen corresponding path program 1 times [2023-12-19 01:33:05,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:05,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437408205] [2023-12-19 01:33:05,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:05,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:05,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:05,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:33:05,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:05,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:33:05,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:05,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:33:05,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:05,520 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-19 01:33:05,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:05,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437408205] [2023-12-19 01:33:05,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437408205] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:05,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:05,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 01:33:05,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470374891] [2023-12-19 01:33:05,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:05,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 01:33:05,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:05,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 01:33:05,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:33:05,523 INFO L87 Difference]: Start difference. First operand 856 states and 1258 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-19 01:33:06,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:06,161 INFO L93 Difference]: Finished difference Result 1328 states and 1904 transitions. [2023-12-19 01:33:06,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:33:06,162 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 60 [2023-12-19 01:33:06,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:06,166 INFO L225 Difference]: With dead ends: 1328 [2023-12-19 01:33:06,167 INFO L226 Difference]: Without dead ends: 933 [2023-12-19 01:33:06,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:33:06,169 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 302 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 1352 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:06,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 1352 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 01:33:06,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2023-12-19 01:33:06,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 860. [2023-12-19 01:33:06,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 762 states have (on average 1.4514435695538057) internal successors, (1106), 772 states have internal predecessors, (1106), 63 states have call successors, (63), 29 states have call predecessors, (63), 33 states have return successors, (81), 59 states have call predecessors, (81), 61 states have call successors, (81) [2023-12-19 01:33:06,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1250 transitions. [2023-12-19 01:33:06,211 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1250 transitions. Word has length 60 [2023-12-19 01:33:06,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:06,212 INFO L495 AbstractCegarLoop]: Abstraction has 860 states and 1250 transitions. [2023-12-19 01:33:06,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-19 01:33:06,212 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1250 transitions. [2023-12-19 01:33:06,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-19 01:33:06,214 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:06,215 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:33:06,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 01:33:06,215 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:06,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:06,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1511505294, now seen corresponding path program 1 times [2023-12-19 01:33:06,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:06,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379802419] [2023-12-19 01:33:06,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:06,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:06,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:06,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:33:06,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:06,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:33:06,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:06,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:33:06,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:06,330 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 01:33:06,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:06,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379802419] [2023-12-19 01:33:06,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379802419] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:33:06,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447263773] [2023-12-19 01:33:06,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:06,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:33:06,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:33:06,347 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) [2023-12-19 01:33:06,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 01:33:06,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:06,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 01:33:06,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:33:06,575 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:06,575 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:33:06,613 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-19 01:33:06,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447263773] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 01:33:06,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-19 01:33:06,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 7 [2023-12-19 01:33:06,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837116581] [2023-12-19 01:33:06,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:06,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:33:06,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:06,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:33:06,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:33:06,615 INFO L87 Difference]: Start difference. First operand 860 states and 1250 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-19 01:33:06,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:06,794 INFO L93 Difference]: Finished difference Result 909 states and 1311 transitions. [2023-12-19 01:33:06,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 01:33:06,795 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 60 [2023-12-19 01:33:06,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:06,798 INFO L225 Difference]: With dead ends: 909 [2023-12-19 01:33:06,798 INFO L226 Difference]: Without dead ends: 906 [2023-12-19 01:33:06,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:33:06,799 INFO L413 NwaCegarLoop]: 652 mSDtfsCounter, 1254 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1254 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:06,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1254 Valid, 707 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:33:06,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2023-12-19 01:33:06,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 859. [2023-12-19 01:33:06,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 762 states have (on average 1.4488188976377954) internal successors, (1104), 771 states have internal predecessors, (1104), 62 states have call successors, (62), 29 states have call predecessors, (62), 33 states have return successors, (81), 59 states have call predecessors, (81), 61 states have call successors, (81) [2023-12-19 01:33:06,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1247 transitions. [2023-12-19 01:33:06,831 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1247 transitions. Word has length 60 [2023-12-19 01:33:06,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:06,832 INFO L495 AbstractCegarLoop]: Abstraction has 859 states and 1247 transitions. [2023-12-19 01:33:06,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-19 01:33:06,832 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1247 transitions. [2023-12-19 01:33:06,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-19 01:33:06,833 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:06,833 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:33:06,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 01:33:07,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:33:07,041 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:07,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:07,041 INFO L85 PathProgramCache]: Analyzing trace with hash -389456119, now seen corresponding path program 1 times [2023-12-19 01:33:07,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:07,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600684318] [2023-12-19 01:33:07,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:07,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:07,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:07,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:33:07,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:07,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:33:07,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:07,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:33:07,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:07,142 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 01:33:07,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:07,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600684318] [2023-12-19 01:33:07,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600684318] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:33:07,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056976982] [2023-12-19 01:33:07,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:07,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:33:07,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:33:07,144 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) [2023-12-19 01:33:07,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 01:33:07,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:07,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 01:33:07,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:33:07,450 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:07,450 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:33:07,500 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-19 01:33:07,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056976982] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:33:07,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:33:07,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2023-12-19 01:33:07,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439908936] [2023-12-19 01:33:07,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:33:07,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 01:33:07,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:07,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 01:33:07,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-19 01:33:07,504 INFO L87 Difference]: Start difference. First operand 859 states and 1247 transitions. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 9 states have internal predecessors, (134), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-12-19 01:33:08,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:08,562 INFO L93 Difference]: Finished difference Result 2095 states and 2899 transitions. [2023-12-19 01:33:08,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-19 01:33:08,562 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 9 states have internal predecessors, (134), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 61 [2023-12-19 01:33:08,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:08,568 INFO L225 Difference]: With dead ends: 2095 [2023-12-19 01:33:08,568 INFO L226 Difference]: Without dead ends: 1697 [2023-12-19 01:33:08,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=664, Unknown=0, NotChecked=0, Total=812 [2023-12-19 01:33:08,569 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 1130 mSDsluCounter, 2424 mSDsCounter, 0 mSdLazyCounter, 2516 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1164 SdHoareTripleChecker+Valid, 2868 SdHoareTripleChecker+Invalid, 2559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:08,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1164 Valid, 2868 Invalid, 2559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 2516 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 01:33:08,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2023-12-19 01:33:08,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1188. [2023-12-19 01:33:08,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1188 states, 1054 states have (on average 1.4022770398481974) internal successors, (1478), 1070 states have internal predecessors, (1478), 81 states have call successors, (81), 42 states have call predecessors, (81), 51 states have return successors, (112), 76 states have call predecessors, (112), 80 states have call successors, (112) [2023-12-19 01:33:08,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1671 transitions. [2023-12-19 01:33:08,639 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1671 transitions. Word has length 61 [2023-12-19 01:33:08,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:08,640 INFO L495 AbstractCegarLoop]: Abstraction has 1188 states and 1671 transitions. [2023-12-19 01:33:08,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 9 states have internal predecessors, (134), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-12-19 01:33:08,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1671 transitions. [2023-12-19 01:33:08,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 01:33:08,642 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:08,642 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-19 01:33:08,651 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-19 01:33:08,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-12-19 01:33:08,854 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:08,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:08,854 INFO L85 PathProgramCache]: Analyzing trace with hash -855987006, now seen corresponding path program 1 times [2023-12-19 01:33:08,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:08,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90098772] [2023-12-19 01:33:08,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:08,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:08,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:08,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:33:08,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:08,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:33:08,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:08,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 01:33:08,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:08,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 01:33:08,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:08,932 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-19 01:33:08,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:08,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90098772] [2023-12-19 01:33:08,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90098772] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:08,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:08,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:33:08,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484050655] [2023-12-19 01:33:08,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:08,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:33:08,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:08,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:33:08,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:33:08,935 INFO L87 Difference]: Start difference. First operand 1188 states and 1671 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-19 01:33:09,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:09,298 INFO L93 Difference]: Finished difference Result 1822 states and 2494 transitions. [2023-12-19 01:33:09,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 01:33:09,298 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 78 [2023-12-19 01:33:09,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:09,304 INFO L225 Difference]: With dead ends: 1822 [2023-12-19 01:33:09,304 INFO L226 Difference]: Without dead ends: 1157 [2023-12-19 01:33:09,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:33:09,306 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 955 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:09,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [983 Valid, 759 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 01:33:09,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2023-12-19 01:33:09,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1080. [2023-12-19 01:33:09,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1080 states, 959 states have (on average 1.407716371220021) internal successors, (1350), 975 states have internal predecessors, (1350), 74 states have call successors, (74), 37 states have call predecessors, (74), 45 states have return successors, (101), 68 states have call predecessors, (101), 73 states have call successors, (101) [2023-12-19 01:33:09,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1080 states to 1080 states and 1525 transitions. [2023-12-19 01:33:09,409 INFO L78 Accepts]: Start accepts. Automaton has 1080 states and 1525 transitions. Word has length 78 [2023-12-19 01:33:09,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:09,409 INFO L495 AbstractCegarLoop]: Abstraction has 1080 states and 1525 transitions. [2023-12-19 01:33:09,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-19 01:33:09,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1080 states and 1525 transitions. [2023-12-19 01:33:09,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-19 01:33:09,415 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:09,415 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-19 01:33:09,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 01:33:09,415 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:09,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:09,416 INFO L85 PathProgramCache]: Analyzing trace with hash -147214036, now seen corresponding path program 1 times [2023-12-19 01:33:09,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:09,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189854623] [2023-12-19 01:33:09,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:09,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:09,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:09,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:33:09,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:09,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:33:09,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:09,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-19 01:33:09,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:09,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 01:33:09,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:09,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 01:33:09,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:09,588 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-19 01:33:09,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:09,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189854623] [2023-12-19 01:33:09,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189854623] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:33:09,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196291312] [2023-12-19 01:33:09,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:09,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:33:09,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:33:09,604 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:33:09,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 01:33:09,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:09,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 01:33:09,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:33:09,742 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 01:33:09,742 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:33:09,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196291312] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:09,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:33:09,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-19 01:33:09,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963357698] [2023-12-19 01:33:09,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:09,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:33:09,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:09,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:33:09,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:33:09,744 INFO L87 Difference]: Start difference. First operand 1080 states and 1525 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-19 01:33:09,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:09,828 INFO L93 Difference]: Finished difference Result 1365 states and 1883 transitions. [2023-12-19 01:33:09,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:33:09,829 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 92 [2023-12-19 01:33:09,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:09,830 INFO L225 Difference]: With dead ends: 1365 [2023-12-19 01:33:09,830 INFO L226 Difference]: Without dead ends: 370 [2023-12-19 01:33:09,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:33:09,832 INFO L413 NwaCegarLoop]: 668 mSDtfsCounter, 55 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 1280 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:09,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 1280 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:33:09,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2023-12-19 01:33:09,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2023-12-19 01:33:09,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 336 states have (on average 1.6369047619047619) internal successors, (550), 337 states have internal predecessors, (550), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-19 01:33:09,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 604 transitions. [2023-12-19 01:33:09,844 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 604 transitions. Word has length 92 [2023-12-19 01:33:09,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:09,844 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 604 transitions. [2023-12-19 01:33:09,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-19 01:33:09,845 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 604 transitions. [2023-12-19 01:33:09,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-19 01:33:09,846 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:09,846 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:09,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 01:33:10,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:33:10,053 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:10,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:10,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1809885346, now seen corresponding path program 1 times [2023-12-19 01:33:10,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:10,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069429699] [2023-12-19 01:33:10,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:10,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:10,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:10,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:33:10,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:10,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:33:10,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:10,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:33:10,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:10,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:33:10,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:10,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:33:10,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:10,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:10,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:10,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069429699] [2023-12-19 01:33:10,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069429699] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:10,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:10,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:33:10,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319475203] [2023-12-19 01:33:10,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:10,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:33:10,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:10,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:33:10,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:33:10,250 INFO L87 Difference]: Start difference. First operand 370 states and 604 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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) [2023-12-19 01:33:12,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:12,397 INFO L93 Difference]: Finished difference Result 903 states and 1513 transitions. [2023-12-19 01:33:12,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 01:33:12,398 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 171 [2023-12-19 01:33:12,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:12,400 INFO L225 Difference]: With dead ends: 903 [2023-12-19 01:33:12,400 INFO L226 Difference]: Without dead ends: 540 [2023-12-19 01:33:12,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-12-19 01:33:12,402 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 1164 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 2267 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1192 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 2328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:12,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1192 Valid, 1201 Invalid, 2328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2267 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 01:33:12,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2023-12-19 01:33:12,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 372. [2023-12-19 01:33:12,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 338 states have (on average 1.6301775147928994) internal successors, (551), 339 states have internal predecessors, (551), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-19 01:33:12,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 605 transitions. [2023-12-19 01:33:12,479 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 605 transitions. Word has length 171 [2023-12-19 01:33:12,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:12,480 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 605 transitions. [2023-12-19 01:33:12,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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) [2023-12-19 01:33:12,480 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 605 transitions. [2023-12-19 01:33:12,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-19 01:33:12,481 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:12,481 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:12,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 01:33:12,482 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:12,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:12,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1493898974, now seen corresponding path program 1 times [2023-12-19 01:33:12,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:12,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288107275] [2023-12-19 01:33:12,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:12,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:12,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:12,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:33:12,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:12,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:33:12,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:12,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:33:12,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:12,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:33:12,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:12,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:33:12,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:12,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:12,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:12,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288107275] [2023-12-19 01:33:12,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288107275] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:12,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:12,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 01:33:12,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432533784] [2023-12-19 01:33:12,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:12,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 01:33:12,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:12,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 01:33:12,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:33:12,706 INFO L87 Difference]: Start difference. First operand 372 states and 605 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 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) [2023-12-19 01:33:14,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:14,134 INFO L93 Difference]: Finished difference Result 871 states and 1437 transitions. [2023-12-19 01:33:14,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 01:33:14,135 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 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 171 [2023-12-19 01:33:14,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:14,137 INFO L225 Difference]: With dead ends: 871 [2023-12-19 01:33:14,137 INFO L226 Difference]: Without dead ends: 514 [2023-12-19 01:33:14,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:33:14,139 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 1037 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1062 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:14,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1062 Valid, 661 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 01:33:14,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2023-12-19 01:33:14,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 372. [2023-12-19 01:33:14,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 338 states have (on average 1.6272189349112427) internal successors, (550), 339 states have internal predecessors, (550), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-19 01:33:14,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 604 transitions. [2023-12-19 01:33:14,167 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 604 transitions. Word has length 171 [2023-12-19 01:33:14,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:14,168 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 604 transitions. [2023-12-19 01:33:14,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 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) [2023-12-19 01:33:14,168 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 604 transitions. [2023-12-19 01:33:14,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-19 01:33:14,169 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:14,169 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:14,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 01:33:14,170 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:14,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:14,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1031596708, now seen corresponding path program 1 times [2023-12-19 01:33:14,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:14,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963546397] [2023-12-19 01:33:14,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:14,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:14,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:14,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:33:14,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:14,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:33:14,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:14,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:33:14,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:14,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:33:14,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:14,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:33:14,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:14,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:14,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:14,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963546397] [2023-12-19 01:33:14,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963546397] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:14,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:14,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 01:33:14,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034073397] [2023-12-19 01:33:14,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:14,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 01:33:14,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:14,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 01:33:14,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:33:14,445 INFO L87 Difference]: Start difference. First operand 372 states and 604 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 4 states have internal predecessors, (161), 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) [2023-12-19 01:33:17,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:17,171 INFO L93 Difference]: Finished difference Result 1381 states and 2292 transitions. [2023-12-19 01:33:17,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 01:33:17,171 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 4 states have internal predecessors, (161), 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 171 [2023-12-19 01:33:17,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:17,175 INFO L225 Difference]: With dead ends: 1381 [2023-12-19 01:33:17,175 INFO L226 Difference]: Without dead ends: 1029 [2023-12-19 01:33:17,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:33:17,176 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 1585 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 2520 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1605 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 2632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:17,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1605 Valid, 1284 Invalid, 2632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2520 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-19 01:33:17,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2023-12-19 01:33:17,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 746. [2023-12-19 01:33:17,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 683 states have (on average 1.638360175695461) internal successors, (1119), 685 states have internal predecessors, (1119), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (52), 49 states have call predecessors, (52), 49 states have call successors, (52) [2023-12-19 01:33:17,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1220 transitions. [2023-12-19 01:33:17,216 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1220 transitions. Word has length 171 [2023-12-19 01:33:17,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:17,217 INFO L495 AbstractCegarLoop]: Abstraction has 746 states and 1220 transitions. [2023-12-19 01:33:17,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 4 states have internal predecessors, (161), 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) [2023-12-19 01:33:17,217 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1220 transitions. [2023-12-19 01:33:17,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-19 01:33:17,218 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:17,218 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:17,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 01:33:17,218 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:17,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:17,219 INFO L85 PathProgramCache]: Analyzing trace with hash 247752032, now seen corresponding path program 1 times [2023-12-19 01:33:17,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:17,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872979537] [2023-12-19 01:33:17,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:17,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:17,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:17,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:33:17,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:17,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:33:17,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:17,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:33:17,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:17,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:33:17,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:17,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:33:17,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:17,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:17,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:17,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872979537] [2023-12-19 01:33:17,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872979537] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:17,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:17,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:33:17,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641341187] [2023-12-19 01:33:17,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:17,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:33:17,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:17,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:33:17,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:33:17,461 INFO L87 Difference]: Start difference. First operand 746 states and 1220 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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) [2023-12-19 01:33:20,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:20,790 INFO L93 Difference]: Finished difference Result 2292 states and 3808 transitions. [2023-12-19 01:33:20,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:33:20,791 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 171 [2023-12-19 01:33:20,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:20,800 INFO L225 Difference]: With dead ends: 2292 [2023-12-19 01:33:20,800 INFO L226 Difference]: Without dead ends: 1566 [2023-12-19 01:33:20,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:33:20,804 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 1636 mSDsluCounter, 1635 mSDsCounter, 0 mSdLazyCounter, 3990 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1656 SdHoareTripleChecker+Valid, 2127 SdHoareTripleChecker+Invalid, 4053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:20,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1656 Valid, 2127 Invalid, 4053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3990 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-19 01:33:20,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2023-12-19 01:33:20,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1091. [2023-12-19 01:33:20,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 999 states have (on average 1.6316316316316317) internal successors, (1630), 1002 states have internal predecessors, (1630), 71 states have call successors, (71), 18 states have call predecessors, (71), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2023-12-19 01:33:20,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1777 transitions. [2023-12-19 01:33:20,886 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1777 transitions. Word has length 171 [2023-12-19 01:33:20,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:20,886 INFO L495 AbstractCegarLoop]: Abstraction has 1091 states and 1777 transitions. [2023-12-19 01:33:20,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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) [2023-12-19 01:33:20,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1777 transitions. [2023-12-19 01:33:20,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-19 01:33:20,888 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:20,888 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:20,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 01:33:20,888 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:20,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:20,888 INFO L85 PathProgramCache]: Analyzing trace with hash -16895458, now seen corresponding path program 1 times [2023-12-19 01:33:20,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:20,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699361383] [2023-12-19 01:33:20,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:20,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:20,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:21,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:33:21,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:21,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:33:21,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:21,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:33:21,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:21,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:33:21,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:21,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:33:21,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:21,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:21,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:21,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699361383] [2023-12-19 01:33:21,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699361383] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:21,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:21,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:33:21,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399620970] [2023-12-19 01:33:21,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:21,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:33:21,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:21,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:33:21,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:33:21,187 INFO L87 Difference]: Start difference. First operand 1091 states and 1777 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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) [2023-12-19 01:33:23,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:23,003 INFO L93 Difference]: Finished difference Result 2657 states and 4411 transitions. [2023-12-19 01:33:23,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:33:23,003 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 171 [2023-12-19 01:33:23,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:23,009 INFO L225 Difference]: With dead ends: 2657 [2023-12-19 01:33:23,010 INFO L226 Difference]: Without dead ends: 1586 [2023-12-19 01:33:23,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:33:23,013 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 1158 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 2047 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1179 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 2114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 2047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:23,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1179 Valid, 1095 Invalid, 2114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 2047 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 01:33:23,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2023-12-19 01:33:23,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 1091. [2023-12-19 01:33:23,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 999 states have (on average 1.6286286286286287) internal successors, (1627), 1002 states have internal predecessors, (1627), 71 states have call successors, (71), 18 states have call predecessors, (71), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2023-12-19 01:33:23,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1774 transitions. [2023-12-19 01:33:23,083 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1774 transitions. Word has length 171 [2023-12-19 01:33:23,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:23,084 INFO L495 AbstractCegarLoop]: Abstraction has 1091 states and 1774 transitions. [2023-12-19 01:33:23,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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) [2023-12-19 01:33:23,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1774 transitions. [2023-12-19 01:33:23,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-19 01:33:23,085 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:23,085 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:23,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 01:33:23,085 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:23,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:23,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1340074404, now seen corresponding path program 1 times [2023-12-19 01:33:23,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:23,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623385329] [2023-12-19 01:33:23,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:23,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:23,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:23,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:33:23,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:23,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:33:23,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:23,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:33:23,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:23,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:33:23,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:23,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:33:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:23,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:23,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:23,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623385329] [2023-12-19 01:33:23,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623385329] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:23,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:23,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:33:23,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802675024] [2023-12-19 01:33:23,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:23,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:33:23,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:23,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:33:23,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:33:23,313 INFO L87 Difference]: Start difference. First operand 1091 states and 1774 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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) [2023-12-19 01:33:25,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:25,190 INFO L93 Difference]: Finished difference Result 2653 states and 4394 transitions. [2023-12-19 01:33:25,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:33:25,191 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 171 [2023-12-19 01:33:25,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:25,195 INFO L225 Difference]: With dead ends: 2653 [2023-12-19 01:33:25,196 INFO L226 Difference]: Without dead ends: 1582 [2023-12-19 01:33:25,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:33:25,198 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 1156 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 2031 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 2098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 2031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:25,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1177 Valid, 1095 Invalid, 2098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 2031 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 01:33:25,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2023-12-19 01:33:25,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 1091. [2023-12-19 01:33:25,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 999 states have (on average 1.6256256256256256) internal successors, (1624), 1002 states have internal predecessors, (1624), 71 states have call successors, (71), 18 states have call predecessors, (71), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2023-12-19 01:33:25,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1771 transitions. [2023-12-19 01:33:25,241 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1771 transitions. Word has length 171 [2023-12-19 01:33:25,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:25,241 INFO L495 AbstractCegarLoop]: Abstraction has 1091 states and 1771 transitions. [2023-12-19 01:33:25,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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) [2023-12-19 01:33:25,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1771 transitions. [2023-12-19 01:33:25,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-19 01:33:25,243 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:25,243 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:25,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 01:33:25,243 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:25,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:25,243 INFO L85 PathProgramCache]: Analyzing trace with hash 556905054, now seen corresponding path program 1 times [2023-12-19 01:33:25,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:25,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230388002] [2023-12-19 01:33:25,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:25,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:25,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:25,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:33:25,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:25,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:33:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:25,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:33:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:25,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:33:25,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:25,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:33:25,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:25,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:25,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:25,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230388002] [2023-12-19 01:33:25,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230388002] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:25,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:25,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:33:25,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465775942] [2023-12-19 01:33:25,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:25,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:33:25,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:25,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:33:25,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:33:25,500 INFO L87 Difference]: Start difference. First operand 1091 states and 1771 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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) [2023-12-19 01:33:27,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:27,151 INFO L93 Difference]: Finished difference Result 2649 states and 4377 transitions. [2023-12-19 01:33:27,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:33:27,151 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 171 [2023-12-19 01:33:27,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:27,156 INFO L225 Difference]: With dead ends: 2649 [2023-12-19 01:33:27,156 INFO L226 Difference]: Without dead ends: 1578 [2023-12-19 01:33:27,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:33:27,159 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 1317 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 1819 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1338 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 1913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:27,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1338 Valid, 922 Invalid, 1913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1819 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 01:33:27,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1578 states. [2023-12-19 01:33:27,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1578 to 1091. [2023-12-19 01:33:27,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 999 states have (on average 1.6226226226226226) internal successors, (1621), 1002 states have internal predecessors, (1621), 71 states have call successors, (71), 18 states have call predecessors, (71), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2023-12-19 01:33:27,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1768 transitions. [2023-12-19 01:33:27,202 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1768 transitions. Word has length 171 [2023-12-19 01:33:27,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:27,202 INFO L495 AbstractCegarLoop]: Abstraction has 1091 states and 1768 transitions. [2023-12-19 01:33:27,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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) [2023-12-19 01:33:27,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1768 transitions. [2023-12-19 01:33:27,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-19 01:33:27,204 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:27,204 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:27,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 01:33:27,204 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:27,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:27,204 INFO L85 PathProgramCache]: Analyzing trace with hash 895192604, now seen corresponding path program 1 times [2023-12-19 01:33:27,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:27,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845148474] [2023-12-19 01:33:27,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:27,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:27,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:27,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:33:27,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:27,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:33:27,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:27,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:33:27,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:27,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:33:27,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:27,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:33:27,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:27,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:27,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:27,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845148474] [2023-12-19 01:33:27,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845148474] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:27,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:27,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:33:27,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777139166] [2023-12-19 01:33:27,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:27,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:33:27,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:27,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:33:27,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:33:27,426 INFO L87 Difference]: Start difference. First operand 1091 states and 1768 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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) [2023-12-19 01:33:31,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:31,396 INFO L93 Difference]: Finished difference Result 3615 states and 5949 transitions. [2023-12-19 01:33:31,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:33:31,397 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 171 [2023-12-19 01:33:31,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:31,405 INFO L225 Difference]: With dead ends: 3615 [2023-12-19 01:33:31,405 INFO L226 Difference]: Without dead ends: 2544 [2023-12-19 01:33:31,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:33:31,408 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 1607 mSDsluCounter, 1635 mSDsCounter, 0 mSdLazyCounter, 3901 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1627 SdHoareTripleChecker+Valid, 2125 SdHoareTripleChecker+Invalid, 3966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:31,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1627 Valid, 2125 Invalid, 3966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3901 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-19 01:33:31,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2544 states. [2023-12-19 01:33:31,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2544 to 1794. [2023-12-19 01:33:31,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1794 states, 1644 states have (on average 1.6155717761557178) internal successors, (2656), 1649 states have internal predecessors, (2656), 115 states have call successors, (115), 30 states have call predecessors, (115), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2023-12-19 01:33:31,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1794 states to 1794 states and 2899 transitions. [2023-12-19 01:33:31,503 INFO L78 Accepts]: Start accepts. Automaton has 1794 states and 2899 transitions. Word has length 171 [2023-12-19 01:33:31,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:31,503 INFO L495 AbstractCegarLoop]: Abstraction has 1794 states and 2899 transitions. [2023-12-19 01:33:31,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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) [2023-12-19 01:33:31,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1794 states and 2899 transitions. [2023-12-19 01:33:31,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-19 01:33:31,504 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:31,505 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:31,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 01:33:31,506 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:31,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:31,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1321747102, now seen corresponding path program 1 times [2023-12-19 01:33:31,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:31,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429877124] [2023-12-19 01:33:31,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:31,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:31,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:33:31,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:31,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:33:31,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:31,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:33:31,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:31,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:33:31,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:31,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:33:31,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:31,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:31,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:31,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429877124] [2023-12-19 01:33:31,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429877124] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:31,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:31,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:33:31,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943154289] [2023-12-19 01:33:31,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:31,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:33:31,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:31,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:33:31,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:33:31,732 INFO L87 Difference]: Start difference. First operand 1794 states and 2899 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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) [2023-12-19 01:33:33,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:33,778 INFO L93 Difference]: Finished difference Result 4305 states and 7068 transitions. [2023-12-19 01:33:33,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:33:33,778 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 171 [2023-12-19 01:33:33,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:33,785 INFO L225 Difference]: With dead ends: 4305 [2023-12-19 01:33:33,785 INFO L226 Difference]: Without dead ends: 2531 [2023-12-19 01:33:33,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:33:33,789 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 1153 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1174 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 2056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:33,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1174 Valid, 1095 Invalid, 2056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-19 01:33:33,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2531 states. [2023-12-19 01:33:33,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2531 to 1794. [2023-12-19 01:33:33,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1794 states, 1644 states have (on average 1.612530413625304) internal successors, (2651), 1649 states have internal predecessors, (2651), 115 states have call successors, (115), 30 states have call predecessors, (115), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2023-12-19 01:33:33,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1794 states to 1794 states and 2894 transitions. [2023-12-19 01:33:33,859 INFO L78 Accepts]: Start accepts. Automaton has 1794 states and 2894 transitions. Word has length 171 [2023-12-19 01:33:33,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:33,859 INFO L495 AbstractCegarLoop]: Abstraction has 1794 states and 2894 transitions. [2023-12-19 01:33:33,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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) [2023-12-19 01:33:33,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1794 states and 2894 transitions. [2023-12-19 01:33:33,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-19 01:33:33,860 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:33,861 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:33,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 01:33:33,861 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:33,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:33,861 INFO L85 PathProgramCache]: Analyzing trace with hash 781317596, now seen corresponding path program 1 times [2023-12-19 01:33:33,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:33,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805717264] [2023-12-19 01:33:33,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:33,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:33,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:33,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:33:33,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:33,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:33:33,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:34,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:33:34,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:34,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:33:34,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:34,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:33:34,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:34,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:34,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:34,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805717264] [2023-12-19 01:33:34,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805717264] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:34,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:34,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:33:34,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789450398] [2023-12-19 01:33:34,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:34,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:33:34,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:34,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:33:34,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:33:34,062 INFO L87 Difference]: Start difference. First operand 1794 states and 2894 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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) [2023-12-19 01:33:37,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:37,951 INFO L93 Difference]: Finished difference Result 6176 states and 10096 transitions. [2023-12-19 01:33:37,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:33:37,952 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 171 [2023-12-19 01:33:37,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:37,971 INFO L225 Difference]: With dead ends: 6176 [2023-12-19 01:33:37,972 INFO L226 Difference]: Without dead ends: 4402 [2023-12-19 01:33:37,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:33:37,976 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 1599 mSDsluCounter, 1635 mSDsCounter, 0 mSdLazyCounter, 3863 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1619 SdHoareTripleChecker+Valid, 2125 SdHoareTripleChecker+Invalid, 3928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:37,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1619 Valid, 2125 Invalid, 3928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3863 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 01:33:37,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4402 states. [2023-12-19 01:33:38,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4402 to 3200. [2023-12-19 01:33:38,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3200 states, 2934 states have (on average 1.6056578050443082) internal successors, (4711), 2943 states have internal predecessors, (4711), 203 states have call successors, (203), 54 states have call predecessors, (203), 62 states have return successors, (238), 210 states have call predecessors, (238), 203 states have call successors, (238) [2023-12-19 01:33:38,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3200 states to 3200 states and 5152 transitions. [2023-12-19 01:33:38,126 INFO L78 Accepts]: Start accepts. Automaton has 3200 states and 5152 transitions. Word has length 171 [2023-12-19 01:33:38,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:38,126 INFO L495 AbstractCegarLoop]: Abstraction has 3200 states and 5152 transitions. [2023-12-19 01:33:38,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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) [2023-12-19 01:33:38,127 INFO L276 IsEmpty]: Start isEmpty. Operand 3200 states and 5152 transitions. [2023-12-19 01:33:38,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-19 01:33:38,129 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:38,129 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:38,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 01:33:38,129 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:38,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:38,129 INFO L85 PathProgramCache]: Analyzing trace with hash 625337054, now seen corresponding path program 1 times [2023-12-19 01:33:38,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:38,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129338831] [2023-12-19 01:33:38,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:38,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:38,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:38,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:33:38,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:38,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:33:38,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:38,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:33:38,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:38,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:33:38,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:38,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:33:38,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:38,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:38,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:38,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129338831] [2023-12-19 01:33:38,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129338831] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:38,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:38,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:33:38,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348605482] [2023-12-19 01:33:38,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:38,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:33:38,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:38,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:33:38,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:33:38,335 INFO L87 Difference]: Start difference. First operand 3200 states and 5152 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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) [2023-12-19 01:33:42,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:42,270 INFO L93 Difference]: Finished difference Result 11304 states and 18444 transitions. [2023-12-19 01:33:42,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:33:42,270 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 171 [2023-12-19 01:33:42,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:42,290 INFO L225 Difference]: With dead ends: 11304 [2023-12-19 01:33:42,290 INFO L226 Difference]: Without dead ends: 8124 [2023-12-19 01:33:42,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:33:42,297 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 1604 mSDsluCounter, 1635 mSDsCounter, 0 mSdLazyCounter, 3845 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1624 SdHoareTripleChecker+Valid, 2125 SdHoareTripleChecker+Invalid, 3910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:42,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1624 Valid, 2125 Invalid, 3910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3845 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 01:33:42,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8124 states. [2023-12-19 01:33:42,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8124 to 6017. [2023-12-19 01:33:42,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6017 states, 5519 states have (on average 1.6011958688168146) internal successors, (8837), 5536 states have internal predecessors, (8837), 379 states have call successors, (379), 102 states have call predecessors, (379), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2023-12-19 01:33:42,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6017 states to 6017 states and 9692 transitions. [2023-12-19 01:33:42,593 INFO L78 Accepts]: Start accepts. Automaton has 6017 states and 9692 transitions. Word has length 171 [2023-12-19 01:33:42,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:42,594 INFO L495 AbstractCegarLoop]: Abstraction has 6017 states and 9692 transitions. [2023-12-19 01:33:42,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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) [2023-12-19 01:33:42,594 INFO L276 IsEmpty]: Start isEmpty. Operand 6017 states and 9692 transitions. [2023-12-19 01:33:42,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-19 01:33:42,597 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:42,597 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:42,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 01:33:42,597 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:42,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:42,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1035947420, now seen corresponding path program 1 times [2023-12-19 01:33:42,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:42,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881919577] [2023-12-19 01:33:42,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:42,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:42,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:42,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:33:42,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:42,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:33:42,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:42,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:33:42,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:42,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:33:42,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:42,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:33:42,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:42,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:42,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:42,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881919577] [2023-12-19 01:33:42,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881919577] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:42,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:42,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:33:42,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999415017] [2023-12-19 01:33:42,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:42,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:33:42,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:42,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:33:42,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:33:42,809 INFO L87 Difference]: Start difference. First operand 6017 states and 9692 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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) [2023-12-19 01:33:44,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:44,800 INFO L93 Difference]: Finished difference Result 14195 states and 23201 transitions. [2023-12-19 01:33:44,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:33:44,801 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 171 [2023-12-19 01:33:44,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:44,820 INFO L225 Difference]: With dead ends: 14195 [2023-12-19 01:33:44,820 INFO L226 Difference]: Without dead ends: 8198 [2023-12-19 01:33:44,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:33:44,831 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 1157 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 1940 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1178 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 2007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:44,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1178 Valid, 1095 Invalid, 2007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1940 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 01:33:44,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8198 states. [2023-12-19 01:33:45,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8198 to 6017. [2023-12-19 01:33:45,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6017 states, 5519 states have (on average 1.598115600652292) internal successors, (8820), 5536 states have internal predecessors, (8820), 379 states have call successors, (379), 102 states have call predecessors, (379), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2023-12-19 01:33:45,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6017 states to 6017 states and 9675 transitions. [2023-12-19 01:33:45,181 INFO L78 Accepts]: Start accepts. Automaton has 6017 states and 9675 transitions. Word has length 171 [2023-12-19 01:33:45,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:45,181 INFO L495 AbstractCegarLoop]: Abstraction has 6017 states and 9675 transitions. [2023-12-19 01:33:45,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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) [2023-12-19 01:33:45,181 INFO L276 IsEmpty]: Start isEmpty. Operand 6017 states and 9675 transitions. [2023-12-19 01:33:45,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-19 01:33:45,185 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:45,185 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:45,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 01:33:45,185 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:45,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:45,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1099935782, now seen corresponding path program 1 times [2023-12-19 01:33:45,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:45,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482063433] [2023-12-19 01:33:45,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:45,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:45,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:45,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:33:45,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:45,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:33:45,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:45,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:33:45,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:45,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:33:45,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:45,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:33:45,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:45,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:45,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:45,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482063433] [2023-12-19 01:33:45,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482063433] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:45,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:45,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:33:45,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336608217] [2023-12-19 01:33:45,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:45,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:33:45,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:45,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:33:45,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:33:45,424 INFO L87 Difference]: Start difference. First operand 6017 states and 9675 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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) [2023-12-19 01:33:47,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:47,452 INFO L93 Difference]: Finished difference Result 14177 states and 23114 transitions. [2023-12-19 01:33:47,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:33:47,452 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 171 [2023-12-19 01:33:47,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:47,469 INFO L225 Difference]: With dead ends: 14177 [2023-12-19 01:33:47,469 INFO L226 Difference]: Without dead ends: 8180 [2023-12-19 01:33:47,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:33:47,479 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 1155 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 1924 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1176 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 1991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:47,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1176 Valid, 1095 Invalid, 1991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1924 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 01:33:47,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8180 states. [2023-12-19 01:33:47,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8180 to 6017. [2023-12-19 01:33:47,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6017 states, 5519 states have (on average 1.5950353324877695) internal successors, (8803), 5536 states have internal predecessors, (8803), 379 states have call successors, (379), 102 states have call predecessors, (379), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2023-12-19 01:33:47,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6017 states to 6017 states and 9658 transitions. [2023-12-19 01:33:47,726 INFO L78 Accepts]: Start accepts. Automaton has 6017 states and 9658 transitions. Word has length 171 [2023-12-19 01:33:47,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:47,726 INFO L495 AbstractCegarLoop]: Abstraction has 6017 states and 9658 transitions. [2023-12-19 01:33:47,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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) [2023-12-19 01:33:47,727 INFO L276 IsEmpty]: Start isEmpty. Operand 6017 states and 9658 transitions. [2023-12-19 01:33:47,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-19 01:33:47,731 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:47,731 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:47,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 01:33:47,731 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:47,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:47,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1030287908, now seen corresponding path program 1 times [2023-12-19 01:33:47,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:47,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644135935] [2023-12-19 01:33:47,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:47,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:47,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:47,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:33:47,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:47,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:33:47,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:47,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:33:47,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:47,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:33:47,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:47,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:33:47,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:47,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:47,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:47,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644135935] [2023-12-19 01:33:47,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644135935] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:47,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:47,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:33:47,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482852983] [2023-12-19 01:33:47,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:47,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:33:47,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:47,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:33:47,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:33:47,974 INFO L87 Difference]: Start difference. First operand 6017 states and 9658 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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) [2023-12-19 01:33:52,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:52,180 INFO L93 Difference]: Finished difference Result 21505 states and 34922 transitions. [2023-12-19 01:33:52,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:33:52,181 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 171 [2023-12-19 01:33:52,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:52,247 INFO L225 Difference]: With dead ends: 21505 [2023-12-19 01:33:52,247 INFO L226 Difference]: Without dead ends: 15508 [2023-12-19 01:33:52,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:33:52,269 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 1585 mSDsluCounter, 1635 mSDsCounter, 0 mSdLazyCounter, 3768 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1605 SdHoareTripleChecker+Valid, 2125 SdHoareTripleChecker+Invalid, 3833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:52,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1605 Valid, 2125 Invalid, 3833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3768 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 01:33:52,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15508 states. [2023-12-19 01:33:52,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15508 to 11717. [2023-12-19 01:33:52,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11717 states, 10755 states have (on average 1.591352859135286) internal successors, (17115), 10788 states have internal predecessors, (17115), 731 states have call successors, (731), 198 states have call predecessors, (731), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2023-12-19 01:33:52,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11717 states to 11717 states and 18852 transitions. [2023-12-19 01:33:52,983 INFO L78 Accepts]: Start accepts. Automaton has 11717 states and 18852 transitions. Word has length 171 [2023-12-19 01:33:52,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:52,983 INFO L495 AbstractCegarLoop]: Abstraction has 11717 states and 18852 transitions. [2023-12-19 01:33:52,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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) [2023-12-19 01:33:52,984 INFO L276 IsEmpty]: Start isEmpty. Operand 11717 states and 18852 transitions. [2023-12-19 01:33:52,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-19 01:33:52,989 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:52,989 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:52,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-19 01:33:52,990 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:52,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:52,990 INFO L85 PathProgramCache]: Analyzing trace with hash -612399206, now seen corresponding path program 1 times [2023-12-19 01:33:52,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:52,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869095154] [2023-12-19 01:33:52,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:52,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:53,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:53,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:33:53,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:53,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:33:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:53,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:33:53,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:53,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:33:53,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:53,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:33:53,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:53,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:53,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:53,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869095154] [2023-12-19 01:33:53,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869095154] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:53,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:53,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:33:53,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309460221] [2023-12-19 01:33:53,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:53,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:33:53,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:53,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:33:53,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:33:53,292 INFO L87 Difference]: Start difference. First operand 11717 states and 18852 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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) [2023-12-19 01:33:58,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:58,634 INFO L93 Difference]: Finished difference Result 47395 states and 77112 transitions. [2023-12-19 01:33:58,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:33:58,635 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 171 [2023-12-19 01:33:58,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:58,736 INFO L225 Difference]: With dead ends: 47395 [2023-12-19 01:33:58,736 INFO L226 Difference]: Without dead ends: 35698 [2023-12-19 01:33:58,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:33:58,761 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 1703 mSDsluCounter, 1630 mSDsCounter, 0 mSdLazyCounter, 4515 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1722 SdHoareTripleChecker+Valid, 2118 SdHoareTripleChecker+Invalid, 4582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 4515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:58,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1722 Valid, 2118 Invalid, 4582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 4515 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-19 01:33:58,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35698 states. [2023-12-19 01:33:59,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35698 to 23078. [2023-12-19 01:33:59,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23078 states, 21220 states have (on average 1.5900565504241282) internal successors, (33741), 21285 states have internal predecessors, (33741), 1403 states have call successors, (1403), 390 states have call predecessors, (1403), 454 states have return successors, (2196), 1466 states have call predecessors, (2196), 1403 states have call successors, (2196) [2023-12-19 01:34:00,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23078 states to 23078 states and 37340 transitions. [2023-12-19 01:34:00,001 INFO L78 Accepts]: Start accepts. Automaton has 23078 states and 37340 transitions. Word has length 171 [2023-12-19 01:34:00,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:34:00,002 INFO L495 AbstractCegarLoop]: Abstraction has 23078 states and 37340 transitions. [2023-12-19 01:34:00,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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) [2023-12-19 01:34:00,002 INFO L276 IsEmpty]: Start isEmpty. Operand 23078 states and 37340 transitions. [2023-12-19 01:34:00,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-19 01:34:00,047 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:34:00,048 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:34:00,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-19 01:34:00,048 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:34:00,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:34:00,049 INFO L85 PathProgramCache]: Analyzing trace with hash 786554396, now seen corresponding path program 1 times [2023-12-19 01:34:00,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:34:00,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706043693] [2023-12-19 01:34:00,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:34:00,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:34:00,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:00,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:34:00,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:00,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:34:00,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:00,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:34:00,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:00,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:34:00,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:00,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:34:00,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:00,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:34:00,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:34:00,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706043693] [2023-12-19 01:34:00,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706043693] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:34:00,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:34:00,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:34:00,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258196171] [2023-12-19 01:34:00,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:34:00,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:34:00,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:34:00,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:34:00,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:34:00,453 INFO L87 Difference]: Start difference. First operand 23078 states and 37340 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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) [2023-12-19 01:34:06,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:34:06,379 INFO L93 Difference]: Finished difference Result 92898 states and 151966 transitions. [2023-12-19 01:34:06,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:34:06,380 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 171 [2023-12-19 01:34:06,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:34:06,636 INFO L225 Difference]: With dead ends: 92898 [2023-12-19 01:34:06,637 INFO L226 Difference]: Without dead ends: 69840 [2023-12-19 01:34:06,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:34:06,752 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 2016 mSDsluCounter, 1627 mSDsCounter, 0 mSdLazyCounter, 3731 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2050 SdHoareTripleChecker+Valid, 2114 SdHoareTripleChecker+Invalid, 3799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:34:06,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2050 Valid, 2114 Invalid, 3799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 3731 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-19 01:34:06,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69840 states. [2023-12-19 01:34:09,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69840 to 45479. [2023-12-19 01:34:09,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45479 states, 41861 states have (on average 1.5896180215475024) internal successors, (66543), 41990 states have internal predecessors, (66543), 2715 states have call successors, (2715), 774 states have call predecessors, (2715), 902 states have return successors, (5030), 2842 states have call predecessors, (5030), 2715 states have call successors, (5030) [2023-12-19 01:34:09,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45479 states to 45479 states and 74288 transitions. [2023-12-19 01:34:09,566 INFO L78 Accepts]: Start accepts. Automaton has 45479 states and 74288 transitions. Word has length 171 [2023-12-19 01:34:09,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:34:09,568 INFO L495 AbstractCegarLoop]: Abstraction has 45479 states and 74288 transitions. [2023-12-19 01:34:09,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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) [2023-12-19 01:34:09,568 INFO L276 IsEmpty]: Start isEmpty. Operand 45479 states and 74288 transitions. [2023-12-19 01:34:09,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-19 01:34:09,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:34:09,586 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:34:09,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-19 01:34:09,587 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:34:09,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:34:09,587 INFO L85 PathProgramCache]: Analyzing trace with hash -830886054, now seen corresponding path program 1 times [2023-12-19 01:34:09,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:34:09,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232836866] [2023-12-19 01:34:09,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:34:09,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:34:09,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:09,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:34:09,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:09,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:34:09,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:09,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:34:09,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:09,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:34:09,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:09,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:34:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:09,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:34:09,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:34:09,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232836866] [2023-12-19 01:34:09,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232836866] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:34:09,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:34:09,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:34:09,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894532908] [2023-12-19 01:34:09,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:34:09,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:34:09,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:34:09,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:34:09,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:34:09,787 INFO L87 Difference]: Start difference. First operand 45479 states and 74288 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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) [2023-12-19 01:34:17,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:34:17,666 INFO L93 Difference]: Finished difference Result 182049 states and 300420 transitions. [2023-12-19 01:34:17,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:34:17,666 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 171 [2023-12-19 01:34:17,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:34:18,221 INFO L225 Difference]: With dead ends: 182049 [2023-12-19 01:34:18,222 INFO L226 Difference]: Without dead ends: 136590 [2023-12-19 01:34:18,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:34:18,317 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 1683 mSDsluCounter, 1630 mSDsCounter, 0 mSdLazyCounter, 4406 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1702 SdHoareTripleChecker+Valid, 2118 SdHoareTripleChecker+Invalid, 4473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 4406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:34:18,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1702 Valid, 2118 Invalid, 4473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 4406 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-19 01:34:18,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136590 states. [2023-12-19 01:34:23,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136590 to 90600. [2023-12-19 01:34:23,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90600 states, 83526 states have (on average 1.5897445106912818) internal successors, (132785), 83783 states have internal predecessors, (132785), 5275 states have call successors, (5275), 1542 states have call predecessors, (5275), 1798 states have return successors, (12092), 5530 states have call predecessors, (12092), 5275 states have call successors, (12092) [2023-12-19 01:34:24,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90600 states to 90600 states and 150152 transitions. [2023-12-19 01:34:24,396 INFO L78 Accepts]: Start accepts. Automaton has 90600 states and 150152 transitions. Word has length 171 [2023-12-19 01:34:24,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:34:24,397 INFO L495 AbstractCegarLoop]: Abstraction has 90600 states and 150152 transitions. [2023-12-19 01:34:24,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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) [2023-12-19 01:34:24,397 INFO L276 IsEmpty]: Start isEmpty. Operand 90600 states and 150152 transitions. [2023-12-19 01:34:24,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-19 01:34:24,500 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:34:24,500 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:34:24,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-19 01:34:24,501 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:34:24,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:34:24,501 INFO L85 PathProgramCache]: Analyzing trace with hash -467419556, now seen corresponding path program 1 times [2023-12-19 01:34:24,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:34:24,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276577178] [2023-12-19 01:34:24,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:34:24,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:34:24,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:24,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:34:24,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:24,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:34:24,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:24,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:34:24,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:24,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:34:24,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:24,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:34:24,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:24,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:34:24,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:34:24,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276577178] [2023-12-19 01:34:24,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276577178] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:34:24,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:34:24,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:34:24,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108108265] [2023-12-19 01:34:24,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:34:24,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:34:24,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:34:24,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:34:24,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:34:24,755 INFO L87 Difference]: Start difference. First operand 90600 states and 150152 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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) [2023-12-19 01:34:36,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:34:36,945 INFO L93 Difference]: Finished difference Result 359264 states and 601242 transitions. [2023-12-19 01:34:36,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:34:36,945 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 171 [2023-12-19 01:34:36,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:34:38,194 INFO L225 Difference]: With dead ends: 359264 [2023-12-19 01:34:38,195 INFO L226 Difference]: Without dead ends: 268684 [2023-12-19 01:34:38,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:34:38,579 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 1951 mSDsluCounter, 1630 mSDsCounter, 0 mSdLazyCounter, 3701 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1985 SdHoareTripleChecker+Valid, 2118 SdHoareTripleChecker+Invalid, 3769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:34:38,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1985 Valid, 2118 Invalid, 3769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 3701 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-19 01:34:38,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268684 states. [2023-12-19 01:34:48,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268684 to 180841. [2023-12-19 01:34:48,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180841 states, 166983 states have (on average 1.5901199523304768) internal successors, (265523), 167496 states have internal predecessors, (265523), 10267 states have call successors, (10267), 3078 states have call predecessors, (10267), 3590 states have return successors, (30462), 10778 states have call predecessors, (30462), 10267 states have call successors, (30462) [2023-12-19 01:34:50,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180841 states to 180841 states and 306252 transitions. [2023-12-19 01:34:50,088 INFO L78 Accepts]: Start accepts. Automaton has 180841 states and 306252 transitions. Word has length 171 [2023-12-19 01:34:50,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:34:50,089 INFO L495 AbstractCegarLoop]: Abstraction has 180841 states and 306252 transitions. [2023-12-19 01:34:50,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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) [2023-12-19 01:34:50,089 INFO L276 IsEmpty]: Start isEmpty. Operand 180841 states and 306252 transitions. [2023-12-19 01:34:50,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-19 01:34:50,211 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:34:50,212 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:34:50,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-19 01:34:50,212 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:34:50,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:34:50,212 INFO L85 PathProgramCache]: Analyzing trace with hash -178600166, now seen corresponding path program 1 times [2023-12-19 01:34:50,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:34:50,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008960451] [2023-12-19 01:34:50,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:34:50,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:34:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:50,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:34:50,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:50,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:34:50,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:50,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:34:50,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:50,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:34:50,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:50,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:34:50,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:50,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:34:50,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:34:50,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008960451] [2023-12-19 01:34:50,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008960451] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:34:50,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:34:50,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:34:50,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159207509] [2023-12-19 01:34:50,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:34:50,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:34:50,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:34:50,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:34:50,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:34:50,462 INFO L87 Difference]: Start difference. First operand 180841 states and 306252 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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) [2023-12-19 01:35:01,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:35:01,958 INFO L93 Difference]: Finished difference Result 416691 states and 723697 transitions. [2023-12-19 01:35:01,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:35:01,959 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 171 [2023-12-19 01:35:01,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:35:03,392 INFO L225 Difference]: With dead ends: 416691 [2023-12-19 01:35:03,392 INFO L226 Difference]: Without dead ends: 235870 [2023-12-19 01:35:03,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:35:03,910 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 1323 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 1678 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1344 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 1774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:35:03,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1344 Valid, 921 Invalid, 1774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1678 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 01:35:04,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235870 states. [2023-12-19 01:35:14,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235870 to 180841. [2023-12-19 01:35:14,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180841 states, 166983 states have (on average 1.5870477833072827) internal successors, (265010), 167496 states have internal predecessors, (265010), 10267 states have call successors, (10267), 3078 states have call predecessors, (10267), 3590 states have return successors, (30462), 10778 states have call predecessors, (30462), 10267 states have call successors, (30462) [2023-12-19 01:35:16,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180841 states to 180841 states and 305739 transitions. [2023-12-19 01:35:16,114 INFO L78 Accepts]: Start accepts. Automaton has 180841 states and 305739 transitions. Word has length 171 [2023-12-19 01:35:16,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:35:16,114 INFO L495 AbstractCegarLoop]: Abstraction has 180841 states and 305739 transitions. [2023-12-19 01:35:16,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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) [2023-12-19 01:35:16,115 INFO L276 IsEmpty]: Start isEmpty. Operand 180841 states and 305739 transitions. [2023-12-19 01:35:16,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-19 01:35:16,188 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:35:16,188 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:35:16,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-19 01:35:16,189 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:35:16,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:35:16,189 INFO L85 PathProgramCache]: Analyzing trace with hash 496559960, now seen corresponding path program 1 times [2023-12-19 01:35:16,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:35:16,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285028720] [2023-12-19 01:35:16,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:35:16,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:35:16,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:16,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:35:16,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:16,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:35:16,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:16,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:35:16,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:16,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:35:16,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:16,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:35:16,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:35:16,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:35:16,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:35:16,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285028720] [2023-12-19 01:35:16,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285028720] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:35:16,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:35:16,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:35:16,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975318] [2023-12-19 01:35:16,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:35:16,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:35:16,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:35:16,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:35:16,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:35:16,445 INFO L87 Difference]: Start difference. First operand 180841 states and 305739 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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)