/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.14.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 14:46:07,589 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 14:46:07,661 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 14:46:07,664 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 14:46:07,665 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 14:46:07,682 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 14:46:07,682 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 14:46:07,683 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 14:46:07,688 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 14:46:07,689 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 14:46:07,689 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 14:46:07,689 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 14:46:07,690 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 14:46:07,690 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 14:46:07,691 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 14:46:07,691 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 14:46:07,691 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 14:46:07,692 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 14:46:07,692 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 14:46:07,692 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 14:46:07,693 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 14:46:07,696 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 14:46:07,696 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 14:46:07,697 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 14:46:07,697 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 14:46:07,697 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 14:46:07,697 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 14:46:07,698 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 14:46:07,698 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 14:46:07,698 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 14:46:07,699 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 14:46:07,699 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 14:46:07,699 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 14:46:07,699 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 14:46:07,700 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 14:46:07,700 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 14:46:07,700 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 14:46:07,701 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 14:46:07,701 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 14:46:07,701 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 14:46:07,701 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 14:46:07,705 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 14:46:07,706 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 14:46:07,706 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 14:46:07,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 14:46:07,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 14:46:07,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 14:46:07,977 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 14:46:07,977 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 14:46:07,978 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.14.cil.c [2023-12-20 14:46:09,163 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 14:46:09,381 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 14:46:09,381 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.14.cil.c [2023-12-20 14:46:09,398 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10e7cd119/f10f2f70a8784d91ba1d5025b5b34d2f/FLAG8b44688dc [2023-12-20 14:46:09,409 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10e7cd119/f10f2f70a8784d91ba1d5025b5b34d2f [2023-12-20 14:46:09,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 14:46:09,412 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 14:46:09,413 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 14:46:09,413 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 14:46:09,417 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 14:46:09,417 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:46:09" (1/1) ... [2023-12-20 14:46:09,418 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49c795f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:46:09, skipping insertion in model container [2023-12-20 14:46:09,418 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:46:09" (1/1) ... [2023-12-20 14:46:09,496 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 14:46:09,668 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.14.cil.c[913,926] [2023-12-20 14:46:09,725 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.14.cil.c[5977,5990] [2023-12-20 14:46:09,835 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 14:46:09,848 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 14:46:09,858 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.14.cil.c[913,926] [2023-12-20 14:46:09,871 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.14.cil.c[5977,5990] [2023-12-20 14:46:09,935 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 14:46:09,982 INFO L206 MainTranslator]: Completed translation [2023-12-20 14:46:09,983 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:46:09 WrapperNode [2023-12-20 14:46:09,983 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 14:46:09,984 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 14:46:09,984 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 14:46:09,984 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 14:46:09,991 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:46:09" (1/1) ... [2023-12-20 14:46:10,006 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:46:09" (1/1) ... [2023-12-20 14:46:10,067 INFO L138 Inliner]: procedures = 72, calls = 85, calls flagged for inlining = 46, calls inlined = 46, statements flattened = 1087 [2023-12-20 14:46:10,067 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 14:46:10,068 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 14:46:10,068 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 14:46:10,068 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 14:46:10,078 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:46:09" (1/1) ... [2023-12-20 14:46:10,078 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:46:09" (1/1) ... [2023-12-20 14:46:10,085 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:46:09" (1/1) ... [2023-12-20 14:46:10,114 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 14:46:10,114 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:46:09" (1/1) ... [2023-12-20 14:46:10,114 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:46:09" (1/1) ... [2023-12-20 14:46:10,141 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:46:09" (1/1) ... [2023-12-20 14:46:10,158 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:46:09" (1/1) ... [2023-12-20 14:46:10,162 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:46:09" (1/1) ... [2023-12-20 14:46:10,192 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:46:09" (1/1) ... [2023-12-20 14:46:10,199 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 14:46:10,200 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 14:46:10,200 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 14:46:10,200 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 14:46:10,201 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:46:09" (1/1) ... [2023-12-20 14:46:10,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 14:46:10,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:46:10,237 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 14:46:10,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 14:46:10,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 14:46:10,314 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-20 14:46:10,314 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-20 14:46:10,314 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2023-12-20 14:46:10,314 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2023-12-20 14:46:10,314 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-20 14:46:10,314 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-20 14:46:10,314 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-20 14:46:10,315 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-20 14:46:10,315 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-20 14:46:10,315 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-20 14:46:10,315 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-20 14:46:10,315 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-20 14:46:10,315 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-20 14:46:10,315 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-20 14:46:10,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 14:46:10,315 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-20 14:46:10,316 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-20 14:46:10,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 14:46:10,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 14:46:10,316 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-20 14:46:10,316 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-20 14:46:10,316 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2023-12-20 14:46:10,316 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2023-12-20 14:46:10,436 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 14:46:10,438 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 14:46:11,281 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 14:46:11,357 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 14:46:11,357 INFO L309 CfgBuilder]: Removed 19 assume(true) statements. [2023-12-20 14:46:11,358 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:46:11 BoogieIcfgContainer [2023-12-20 14:46:11,358 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 14:46:11,362 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 14:46:11,362 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 14:46:11,365 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 14:46:11,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 02:46:09" (1/3) ... [2023-12-20 14:46:11,366 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f0ddd82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:46:11, skipping insertion in model container [2023-12-20 14:46:11,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:46:09" (2/3) ... [2023-12-20 14:46:11,367 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f0ddd82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:46:11, skipping insertion in model container [2023-12-20 14:46:11,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:46:11" (3/3) ... [2023-12-20 14:46:11,368 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.14.cil.c [2023-12-20 14:46:11,385 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 14:46:11,385 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 14:46:11,438 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 14:46:11,444 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;@7048e6d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 14:46:11,444 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 14:46:11,453 INFO L276 IsEmpty]: Start isEmpty. Operand has 417 states, 370 states have (on average 1.727027027027027) internal successors, (639), 377 states have internal predecessors, (639), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-20 14:46:11,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-20 14:46:11,463 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:46:11,464 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] [2023-12-20 14:46:11,464 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:46:11,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:46:11,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1876931387, now seen corresponding path program 1 times [2023-12-20 14:46:11,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:46:11,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965443740] [2023-12-20 14:46:11,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:46:11,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:46:11,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:11,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 14:46:11,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:11,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:46:11,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:11,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:46:11,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:46:11,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965443740] [2023-12-20 14:46:11,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965443740] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:46:11,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:46:11,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 14:46:11,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518682825] [2023-12-20 14:46:11,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:46:11,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:46:11,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:46:11,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:46:11,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:46:11,861 INFO L87 Difference]: Start difference. First operand has 417 states, 370 states have (on average 1.727027027027027) internal successors, (639), 377 states have internal predecessors, (639), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) 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) [2023-12-20 14:46:12,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:46:12,601 INFO L93 Difference]: Finished difference Result 874 states and 1478 transitions. [2023-12-20 14:46:12,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 14:46:12,603 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 [2023-12-20 14:46:12,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:46:12,616 INFO L225 Difference]: With dead ends: 874 [2023-12-20 14:46:12,616 INFO L226 Difference]: Without dead ends: 474 [2023-12-20 14:46:12,622 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 [2023-12-20 14:46:12,625 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 895 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:46:12,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [921 Valid, 708 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 14:46:12,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2023-12-20 14:46:12,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 468. [2023-12-20 14:46:12,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 417 states have (on average 1.592326139088729) internal successors, (664), 422 states have internal predecessors, (664), 38 states have call successors, (38), 12 states have call predecessors, (38), 11 states have return successors, (40), 34 states have call predecessors, (40), 34 states have call successors, (40) [2023-12-20 14:46:12,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 742 transitions. [2023-12-20 14:46:12,705 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 742 transitions. Word has length 37 [2023-12-20 14:46:12,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:46:12,705 INFO L495 AbstractCegarLoop]: Abstraction has 468 states and 742 transitions. [2023-12-20 14:46:12,706 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) [2023-12-20 14:46:12,706 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 742 transitions. [2023-12-20 14:46:12,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-20 14:46:12,711 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:46:12,711 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] [2023-12-20 14:46:12,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 14:46:12,711 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:46:12,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:46:12,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1901609684, now seen corresponding path program 1 times [2023-12-20 14:46:12,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:46:12,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486136489] [2023-12-20 14:46:12,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:46:12,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:46:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:12,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 14:46:12,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:12,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-20 14:46:12,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:12,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:46:12,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:46:12,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486136489] [2023-12-20 14:46:12,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486136489] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:46:12,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:46:12,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 14:46:12,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35391827] [2023-12-20 14:46:12,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:46:12,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:46:12,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:46:12,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:46:12,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:46:12,840 INFO L87 Difference]: Start difference. First operand 468 states and 742 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) [2023-12-20 14:46:13,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:46:13,384 INFO L93 Difference]: Finished difference Result 702 states and 1086 transitions. [2023-12-20 14:46:13,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 14:46:13,385 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 [2023-12-20 14:46:13,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:46:13,389 INFO L225 Difference]: With dead ends: 702 [2023-12-20 14:46:13,390 INFO L226 Difference]: Without dead ends: 591 [2023-12-20 14:46:13,391 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 [2023-12-20 14:46:13,392 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 908 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:46:13,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 709 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 14:46:13,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2023-12-20 14:46:13,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 568. [2023-12-20 14:46:13,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 504 states have (on average 1.5515873015873016) internal successors, (782), 510 states have internal predecessors, (782), 46 states have call successors, (46), 16 states have call predecessors, (46), 16 states have return successors, (54), 42 states have call predecessors, (54), 42 states have call successors, (54) [2023-12-20 14:46:13,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 882 transitions. [2023-12-20 14:46:13,434 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 882 transitions. Word has length 38 [2023-12-20 14:46:13,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:46:13,434 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 882 transitions. [2023-12-20 14:46:13,434 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) [2023-12-20 14:46:13,434 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 882 transitions. [2023-12-20 14:46:13,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-20 14:46:13,437 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:46:13,437 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] [2023-12-20 14:46:13,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 14:46:13,437 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:46:13,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:46:13,438 INFO L85 PathProgramCache]: Analyzing trace with hash 518462469, now seen corresponding path program 1 times [2023-12-20 14:46:13,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:46:13,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061521167] [2023-12-20 14:46:13,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:46:13,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:46:13,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:13,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 14:46:13,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:13,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 14:46:13,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:13,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:46:13,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:46:13,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061521167] [2023-12-20 14:46:13,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061521167] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:46:13,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:46:13,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 14:46:13,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465165780] [2023-12-20 14:46:13,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:46:13,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:46:13,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:46:13,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:46:13,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:46:13,500 INFO L87 Difference]: Start difference. First operand 568 states and 882 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) [2023-12-20 14:46:14,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:46:14,102 INFO L93 Difference]: Finished difference Result 988 states and 1463 transitions. [2023-12-20 14:46:14,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 14:46:14,103 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 [2023-12-20 14:46:14,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:46:14,108 INFO L225 Difference]: With dead ends: 988 [2023-12-20 14:46:14,109 INFO L226 Difference]: Without dead ends: 777 [2023-12-20 14:46:14,110 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 [2023-12-20 14:46:14,113 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 347 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 1006 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:46:14,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 1006 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 14:46:14,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2023-12-20 14:46:14,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 673. [2023-12-20 14:46:14,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 597 states have (on average 1.5259631490787269) internal successors, (911), 605 states have internal predecessors, (911), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (60), 46 states have call predecessors, (60), 48 states have call successors, (60) [2023-12-20 14:46:14,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 1023 transitions. [2023-12-20 14:46:14,165 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 1023 transitions. Word has length 39 [2023-12-20 14:46:14,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:46:14,166 INFO L495 AbstractCegarLoop]: Abstraction has 673 states and 1023 transitions. [2023-12-20 14:46:14,166 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) [2023-12-20 14:46:14,166 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 1023 transitions. [2023-12-20 14:46:14,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-20 14:46:14,169 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:46:14,169 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] [2023-12-20 14:46:14,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 14:46:14,169 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:46:14,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:46:14,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1901754450, now seen corresponding path program 1 times [2023-12-20 14:46:14,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:46:14,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950380195] [2023-12-20 14:46:14,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:46:14,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:46:14,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:14,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 14:46:14,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:14,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-20 14:46:14,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:14,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:46:14,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:14,269 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 14:46:14,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:46:14,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950380195] [2023-12-20 14:46:14,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950380195] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:46:14,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:46:14,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 14:46:14,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813437763] [2023-12-20 14:46:14,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:46:14,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:46:14,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:46:14,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:46:14,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:46:14,272 INFO L87 Difference]: Start difference. First operand 673 states and 1023 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) [2023-12-20 14:46:14,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:46:14,891 INFO L93 Difference]: Finished difference Result 1189 states and 1740 transitions. [2023-12-20 14:46:14,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 14:46:14,892 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 [2023-12-20 14:46:14,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:46:14,899 INFO L225 Difference]: With dead ends: 1189 [2023-12-20 14:46:14,899 INFO L226 Difference]: Without dead ends: 873 [2023-12-20 14:46:14,900 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 [2023-12-20 14:46:14,902 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 332 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:46:14,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 1053 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 14:46:14,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2023-12-20 14:46:14,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 839. [2023-12-20 14:46:14,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 739 states have (on average 1.4709066305818674) internal successors, (1087), 749 states have internal predecessors, (1087), 66 states have call successors, (66), 30 states have call predecessors, (66), 32 states have return successors, (84), 60 states have call predecessors, (84), 62 states have call successors, (84) [2023-12-20 14:46:14,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1237 transitions. [2023-12-20 14:46:14,952 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1237 transitions. Word has length 54 [2023-12-20 14:46:14,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:46:14,952 INFO L495 AbstractCegarLoop]: Abstraction has 839 states and 1237 transitions. [2023-12-20 14:46:14,952 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) [2023-12-20 14:46:14,953 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1237 transitions. [2023-12-20 14:46:14,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-20 14:46:14,955 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:46:14,955 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] [2023-12-20 14:46:14,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 14:46:14,956 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:46:14,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:46:14,956 INFO L85 PathProgramCache]: Analyzing trace with hash 2087286059, now seen corresponding path program 1 times [2023-12-20 14:46:14,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:46:14,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249533186] [2023-12-20 14:46:14,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:46:14,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:46:14,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:14,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 14:46:14,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:15,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:46:15,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:15,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:46:15,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:15,014 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-20 14:46:15,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:46:15,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249533186] [2023-12-20 14:46:15,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249533186] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:46:15,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:46:15,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 14:46:15,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627075848] [2023-12-20 14:46:15,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:46:15,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:46:15,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:46:15,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:46:15,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:46:15,017 INFO L87 Difference]: Start difference. First operand 839 states and 1237 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) [2023-12-20 14:46:15,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:46:15,469 INFO L93 Difference]: Finished difference Result 1418 states and 2016 transitions. [2023-12-20 14:46:15,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 14:46:15,469 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 [2023-12-20 14:46:15,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:46:15,475 INFO L225 Difference]: With dead ends: 1418 [2023-12-20 14:46:15,475 INFO L226 Difference]: Without dead ends: 1016 [2023-12-20 14:46:15,478 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 [2023-12-20 14:46:15,479 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 894 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:46:15,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 721 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 14:46:15,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2023-12-20 14:46:15,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 967. [2023-12-20 14:46:15,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 851 states have (on average 1.435957696827262) internal successors, (1222), 863 states have internal predecessors, (1222), 74 states have call successors, (74), 36 states have call predecessors, (74), 40 states have return successors, (98), 68 states have call predecessors, (98), 70 states have call successors, (98) [2023-12-20 14:46:15,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1394 transitions. [2023-12-20 14:46:15,569 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1394 transitions. Word has length 59 [2023-12-20 14:46:15,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:46:15,569 INFO L495 AbstractCegarLoop]: Abstraction has 967 states and 1394 transitions. [2023-12-20 14:46:15,570 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) [2023-12-20 14:46:15,570 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1394 transitions. [2023-12-20 14:46:15,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-20 14:46:15,572 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:46:15,572 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] [2023-12-20 14:46:15,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 14:46:15,573 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:46:15,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:46:15,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1232195774, now seen corresponding path program 1 times [2023-12-20 14:46:15,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:46:15,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966243529] [2023-12-20 14:46:15,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:46:15,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:46:15,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:15,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 14:46:15,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:15,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:46:15,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:15,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:46:15,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:15,701 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-20 14:46:15,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:46:15,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966243529] [2023-12-20 14:46:15,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966243529] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:46:15,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:46:15,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 14:46:15,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752316327] [2023-12-20 14:46:15,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:46:15,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 14:46:15,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:46:15,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 14:46:15,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 14:46:15,704 INFO L87 Difference]: Start difference. First operand 967 states and 1394 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) [2023-12-20 14:46:16,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:46:16,369 INFO L93 Difference]: Finished difference Result 1453 states and 2056 transitions. [2023-12-20 14:46:16,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 14:46:16,370 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 [2023-12-20 14:46:16,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:46:16,374 INFO L225 Difference]: With dead ends: 1453 [2023-12-20 14:46:16,374 INFO L226 Difference]: Without dead ends: 915 [2023-12-20 14:46:16,376 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 [2023-12-20 14:46:16,379 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 284 mSDsluCounter, 946 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 1313 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:46:16,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 1313 Invalid, 1081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 14:46:16,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2023-12-20 14:46:16,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 842. [2023-12-20 14:46:16,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 743 states have (on average 1.4468371467025571) internal successors, (1075), 754 states have internal predecessors, (1075), 64 states have call successors, (64), 30 states have call predecessors, (64), 33 states have return successors, (80), 58 states have call predecessors, (80), 60 states have call successors, (80) [2023-12-20 14:46:16,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1219 transitions. [2023-12-20 14:46:16,420 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1219 transitions. Word has length 60 [2023-12-20 14:46:16,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:46:16,421 INFO L495 AbstractCegarLoop]: Abstraction has 842 states and 1219 transitions. [2023-12-20 14:46:16,421 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) [2023-12-20 14:46:16,421 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1219 transitions. [2023-12-20 14:46:16,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-20 14:46:16,422 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:46:16,422 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] [2023-12-20 14:46:16,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 14:46:16,423 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:46:16,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:46:16,423 INFO L85 PathProgramCache]: Analyzing trace with hash 565443842, now seen corresponding path program 1 times [2023-12-20 14:46:16,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:46:16,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411780893] [2023-12-20 14:46:16,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:46:16,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:46:16,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:16,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 14:46:16,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:16,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:46:16,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:16,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:46:16,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:16,525 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 14:46:16,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:46:16,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411780893] [2023-12-20 14:46:16,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411780893] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:46:16,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3086638] [2023-12-20 14:46:16,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:46:16,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:46:16,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:46:16,529 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:46:16,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 14:46:16,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:16,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-20 14:46:16,687 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:46:16,774 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:46:16,774 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:46:16,806 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-20 14:46:16,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3086638] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-20 14:46:16,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-20 14:46:16,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 7 [2023-12-20 14:46:16,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010730985] [2023-12-20 14:46:16,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:46:16,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:46:16,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:46:16,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:46:16,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:46:16,808 INFO L87 Difference]: Start difference. First operand 842 states and 1219 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) [2023-12-20 14:46:17,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:46:17,011 INFO L93 Difference]: Finished difference Result 891 states and 1280 transitions. [2023-12-20 14:46:17,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 14:46:17,011 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 [2023-12-20 14:46:17,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:46:17,016 INFO L225 Difference]: With dead ends: 891 [2023-12-20 14:46:17,016 INFO L226 Difference]: Without dead ends: 888 [2023-12-20 14:46:17,017 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 [2023-12-20 14:46:17,017 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 1192 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1192 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 14:46:17,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1192 Valid, 679 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 14:46:17,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2023-12-20 14:46:17,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 841. [2023-12-20 14:46:17,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 743 states have (on average 1.4441453566621802) internal successors, (1073), 753 states have internal predecessors, (1073), 63 states have call successors, (63), 30 states have call predecessors, (63), 33 states have return successors, (80), 58 states have call predecessors, (80), 60 states have call successors, (80) [2023-12-20 14:46:17,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1216 transitions. [2023-12-20 14:46:17,058 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1216 transitions. Word has length 60 [2023-12-20 14:46:17,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:46:17,059 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 1216 transitions. [2023-12-20 14:46:17,059 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) [2023-12-20 14:46:17,059 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1216 transitions. [2023-12-20 14:46:17,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 14:46:17,060 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:46:17,060 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] [2023-12-20 14:46:17,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 14:46:17,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:46:17,273 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:46:17,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:46:17,274 INFO L85 PathProgramCache]: Analyzing trace with hash 347468046, now seen corresponding path program 1 times [2023-12-20 14:46:17,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:46:17,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413841115] [2023-12-20 14:46:17,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:46:17,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:46:17,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:17,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 14:46:17,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:17,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:46:17,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:17,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:46:17,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:17,396 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 14:46:17,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:46:17,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413841115] [2023-12-20 14:46:17,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413841115] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:46:17,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124374561] [2023-12-20 14:46:17,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:46:17,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:46:17,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:46:17,399 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:46:17,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 14:46:17,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:17,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-20 14:46:17,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:46:17,758 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:46:17,759 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:46:17,818 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-20 14:46:17,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124374561] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:46:17,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:46:17,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2023-12-20 14:46:17,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458241569] [2023-12-20 14:46:17,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:46:17,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-20 14:46:17,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:46:17,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-20 14:46:17,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-20 14:46:17,821 INFO L87 Difference]: Start difference. First operand 841 states and 1216 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) [2023-12-20 14:46:19,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:46:19,265 INFO L93 Difference]: Finished difference Result 2077 states and 2868 transitions. [2023-12-20 14:46:19,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-20 14:46:19,266 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 [2023-12-20 14:46:19,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:46:19,274 INFO L225 Difference]: With dead ends: 2077 [2023-12-20 14:46:19,274 INFO L226 Difference]: Without dead ends: 1679 [2023-12-20 14:46:19,276 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 [2023-12-20 14:46:19,277 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 1082 mSDsluCounter, 2360 mSDsCounter, 0 mSdLazyCounter, 2391 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1115 SdHoareTripleChecker+Valid, 2793 SdHoareTripleChecker+Invalid, 2435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 2391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:46:19,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1115 Valid, 2793 Invalid, 2435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 2391 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 14:46:19,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1679 states. [2023-12-20 14:46:19,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1679 to 1170. [2023-12-20 14:46:19,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1170 states, 1035 states have (on average 1.3980676328502415) internal successors, (1447), 1052 states have internal predecessors, (1447), 82 states have call successors, (82), 43 states have call predecessors, (82), 51 states have return successors, (111), 75 states have call predecessors, (111), 79 states have call successors, (111) [2023-12-20 14:46:19,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 1640 transitions. [2023-12-20 14:46:19,335 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 1640 transitions. Word has length 61 [2023-12-20 14:46:19,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:46:19,335 INFO L495 AbstractCegarLoop]: Abstraction has 1170 states and 1640 transitions. [2023-12-20 14:46:19,335 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) [2023-12-20 14:46:19,335 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 1640 transitions. [2023-12-20 14:46:19,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-20 14:46:19,337 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:46:19,338 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] [2023-12-20 14:46:19,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 14:46:19,543 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,SelfDestructingSolverStorable7 [2023-12-20 14:46:19,543 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:46:19,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:46:19,544 INFO L85 PathProgramCache]: Analyzing trace with hash -618589152, now seen corresponding path program 1 times [2023-12-20 14:46:19,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:46:19,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697082048] [2023-12-20 14:46:19,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:46:19,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:46:19,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:19,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 14:46:19,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:19,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:46:19,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:19,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:46:19,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:19,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-20 14:46:19,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:19,619 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-20 14:46:19,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:46:19,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697082048] [2023-12-20 14:46:19,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697082048] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:46:19,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:46:19,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 14:46:19,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731662463] [2023-12-20 14:46:19,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:46:19,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:46:19,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:46:19,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:46:19,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:46:19,622 INFO L87 Difference]: Start difference. First operand 1170 states and 1640 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) [2023-12-20 14:46:20,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:46:20,106 INFO L93 Difference]: Finished difference Result 1804 states and 2463 transitions. [2023-12-20 14:46:20,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 14:46:20,107 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 [2023-12-20 14:46:20,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:46:20,113 INFO L225 Difference]: With dead ends: 1804 [2023-12-20 14:46:20,113 INFO L226 Difference]: Without dead ends: 1139 [2023-12-20 14:46:20,115 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 [2023-12-20 14:46:20,117 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 907 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:46:20,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 737 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 14:46:20,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2023-12-20 14:46:20,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1062. [2023-12-20 14:46:20,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1062 states, 940 states have (on average 1.4031914893617021) internal successors, (1319), 957 states have internal predecessors, (1319), 75 states have call successors, (75), 38 states have call predecessors, (75), 45 states have return successors, (100), 67 states have call predecessors, (100), 72 states have call successors, (100) [2023-12-20 14:46:20,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1494 transitions. [2023-12-20 14:46:20,164 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1494 transitions. Word has length 78 [2023-12-20 14:46:20,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:46:20,165 INFO L495 AbstractCegarLoop]: Abstraction has 1062 states and 1494 transitions. [2023-12-20 14:46:20,165 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) [2023-12-20 14:46:20,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1494 transitions. [2023-12-20 14:46:20,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 14:46:20,170 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:46:20,171 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] [2023-12-20 14:46:20,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 14:46:20,171 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:46:20,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:46:20,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1502163055, now seen corresponding path program 1 times [2023-12-20 14:46:20,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:46:20,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788518518] [2023-12-20 14:46:20,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:46:20,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:46:20,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:20,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 14:46:20,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:20,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:46:20,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:20,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-20 14:46:20,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:20,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-20 14:46:20,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:20,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-20 14:46:20,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:20,277 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-20 14:46:20,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:46:20,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788518518] [2023-12-20 14:46:20,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788518518] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:46:20,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343769689] [2023-12-20 14:46:20,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:46:20,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:46:20,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:46:20,279 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) [2023-12-20 14:46:20,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 14:46:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:20,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 14:46:20,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:46:20,440 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 14:46:20,440 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:46:20,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343769689] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:46:20,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:46:20,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-20 14:46:20,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988416565] [2023-12-20 14:46:20,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:46:20,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:46:20,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:46:20,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:46:20,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 14:46:20,442 INFO L87 Difference]: Start difference. First operand 1062 states and 1494 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) [2023-12-20 14:46:20,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:46:20,543 INFO L93 Difference]: Finished difference Result 1347 states and 1852 transitions. [2023-12-20 14:46:20,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:46:20,543 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 [2023-12-20 14:46:20,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:46:20,545 INFO L225 Difference]: With dead ends: 1347 [2023-12-20 14:46:20,545 INFO L226 Difference]: Without dead ends: 352 [2023-12-20 14:46:20,547 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 [2023-12-20 14:46:20,547 INFO L413 NwaCegarLoop]: 640 mSDtfsCounter, 55 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 1224 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:46:20,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 1224 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:46:20,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2023-12-20 14:46:20,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2023-12-20 14:46:20,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 317 states have (on average 1.637223974763407) internal successors, (519), 319 states have internal predecessors, (519), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-20 14:46:20,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 573 transitions. [2023-12-20 14:46:20,590 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 573 transitions. Word has length 92 [2023-12-20 14:46:20,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:46:20,590 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 573 transitions. [2023-12-20 14:46:20,590 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) [2023-12-20 14:46:20,590 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 573 transitions. [2023-12-20 14:46:20,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 14:46:20,591 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:46:20,592 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] [2023-12-20 14:46:20,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 14:46:20,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:46:20,802 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:46:20,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:46:20,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1764087834, now seen corresponding path program 1 times [2023-12-20 14:46:20,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:46:20,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361335219] [2023-12-20 14:46:20,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:46:20,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:46:20,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:20,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:46:20,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:20,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:46:20,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:20,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 14:46:20,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:20,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 14:46:20,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:20,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 14:46:20,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:20,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:46:20,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:46:20,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361335219] [2023-12-20 14:46:20,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361335219] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:46:20,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:46:20,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 14:46:20,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706060270] [2023-12-20 14:46:20,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:46:20,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 14:46:20,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:46:20,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 14:46:21,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 14:46:21,000 INFO L87 Difference]: Start difference. First operand 352 states and 573 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:46:22,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:46:22,669 INFO L93 Difference]: Finished difference Result 829 states and 1372 transitions. [2023-12-20 14:46:22,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 14:46:22,669 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 14:46:22,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:46:22,672 INFO L225 Difference]: With dead ends: 829 [2023-12-20 14:46:22,672 INFO L226 Difference]: Without dead ends: 482 [2023-12-20 14:46:22,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:46:22,674 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 987 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:46:22,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1011 Valid, 639 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 14:46:22,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2023-12-20 14:46:22,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 352. [2023-12-20 14:46:22,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 317 states have (on average 1.6340694006309149) internal successors, (518), 319 states have internal predecessors, (518), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-20 14:46:22,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 572 transitions. [2023-12-20 14:46:22,695 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 572 transitions. Word has length 162 [2023-12-20 14:46:22,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:46:22,695 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 572 transitions. [2023-12-20 14:46:22,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:46:22,696 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 572 transitions. [2023-12-20 14:46:22,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 14:46:22,698 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:46:22,698 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] [2023-12-20 14:46:22,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 14:46:22,698 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:46:22,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:46:22,699 INFO L85 PathProgramCache]: Analyzing trace with hash 783133020, now seen corresponding path program 1 times [2023-12-20 14:46:22,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:46:22,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328070695] [2023-12-20 14:46:22,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:46:22,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:46:22,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:22,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:46:22,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:22,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:46:22,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:22,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 14:46:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:22,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 14:46:22,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:22,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 14:46:22,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:22,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:46:22,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:46:22,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328070695] [2023-12-20 14:46:22,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328070695] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:46:22,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:46:22,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:46:22,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072114874] [2023-12-20 14:46:22,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:46:22,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:46:22,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:46:22,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:46:22,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:46:22,929 INFO L87 Difference]: Start difference. First operand 352 states and 572 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:46:25,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:46:25,368 INFO L93 Difference]: Finished difference Result 851 states and 1419 transitions. [2023-12-20 14:46:25,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 14:46:25,369 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 14:46:25,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:46:25,373 INFO L225 Difference]: With dead ends: 851 [2023-12-20 14:46:25,374 INFO L226 Difference]: Without dead ends: 512 [2023-12-20 14:46:25,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-12-20 14:46:25,375 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 1096 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 2111 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 2174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:46:25,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1123 Valid, 1153 Invalid, 2174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 2111 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-20 14:46:25,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2023-12-20 14:46:25,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 354. [2023-12-20 14:46:25,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 319 states have (on average 1.6269592476489028) internal successors, (519), 321 states have internal predecessors, (519), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-20 14:46:25,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 573 transitions. [2023-12-20 14:46:25,397 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 573 transitions. Word has length 162 [2023-12-20 14:46:25,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:46:25,397 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 573 transitions. [2023-12-20 14:46:25,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:46:25,397 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 573 transitions. [2023-12-20 14:46:25,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 14:46:25,398 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:46:25,399 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] [2023-12-20 14:46:25,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 14:46:25,399 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:46:25,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:46:25,399 INFO L85 PathProgramCache]: Analyzing trace with hash 2001720668, now seen corresponding path program 1 times [2023-12-20 14:46:25,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:46:25,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418110541] [2023-12-20 14:46:25,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:46:25,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:46:25,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:25,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:46:25,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:25,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:46:25,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:25,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 14:46:25,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:25,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 14:46:25,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:25,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 14:46:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:25,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:46:25,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:46:25,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418110541] [2023-12-20 14:46:25,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418110541] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:46:25,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:46:25,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 14:46:25,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115505345] [2023-12-20 14:46:25,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:46:25,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 14:46:25,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:46:25,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 14:46:25,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 14:46:25,650 INFO L87 Difference]: Start difference. First operand 354 states and 573 transitions. Second operand has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:46:28,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:46:28,313 INFO L93 Difference]: Finished difference Result 1307 states and 2163 transitions. [2023-12-20 14:46:28,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 14:46:28,313 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 14:46:28,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:46:28,318 INFO L225 Difference]: With dead ends: 1307 [2023-12-20 14:46:28,318 INFO L226 Difference]: Without dead ends: 972 [2023-12-20 14:46:28,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:46:28,320 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 1488 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 2302 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 2418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:46:28,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 1077 Invalid, 2418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2302 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-20 14:46:28,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2023-12-20 14:46:28,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 707. [2023-12-20 14:46:28,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 644 states have (on average 1.6381987577639752) internal successors, (1055), 647 states have internal predecessors, (1055), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2023-12-20 14:46:28,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1154 transitions. [2023-12-20 14:46:28,363 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1154 transitions. Word has length 162 [2023-12-20 14:46:28,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:46:28,363 INFO L495 AbstractCegarLoop]: Abstraction has 707 states and 1154 transitions. [2023-12-20 14:46:28,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:46:28,363 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1154 transitions. [2023-12-20 14:46:28,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 14:46:28,364 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:46:28,365 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] [2023-12-20 14:46:28,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 14:46:28,365 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:46:28,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:46:28,365 INFO L85 PathProgramCache]: Analyzing trace with hash -203647716, now seen corresponding path program 1 times [2023-12-20 14:46:28,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:46:28,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16174533] [2023-12-20 14:46:28,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:46:28,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:46:28,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:28,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:46:28,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:28,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:46:28,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:28,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 14:46:28,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:28,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 14:46:28,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:28,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 14:46:28,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:28,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:46:28,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:46:28,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16174533] [2023-12-20 14:46:28,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16174533] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:46:28,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:46:28,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:46:28,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080070578] [2023-12-20 14:46:28,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:46:28,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:46:28,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:46:28,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:46:28,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:46:28,721 INFO L87 Difference]: Start difference. First operand 707 states and 1154 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:46:32,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:46:32,563 INFO L93 Difference]: Finished difference Result 2164 states and 3587 transitions. [2023-12-20 14:46:32,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:46:32,564 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 14:46:32,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:46:32,570 INFO L225 Difference]: With dead ends: 2164 [2023-12-20 14:46:32,570 INFO L226 Difference]: Without dead ends: 1476 [2023-12-20 14:46:32,572 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 [2023-12-20 14:46:32,572 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 1521 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 3747 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1540 SdHoareTripleChecker+Valid, 2053 SdHoareTripleChecker+Invalid, 3812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-20 14:46:32,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1540 Valid, 2053 Invalid, 3812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3747 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-20 14:46:32,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2023-12-20 14:46:32,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1033. [2023-12-20 14:46:32,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1033 states, 942 states have (on average 1.6316348195329087) internal successors, (1537), 946 states have internal predecessors, (1537), 70 states have call successors, (70), 19 states have call predecessors, (70), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2023-12-20 14:46:32,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1033 states to 1033 states and 1680 transitions. [2023-12-20 14:46:32,626 INFO L78 Accepts]: Start accepts. Automaton has 1033 states and 1680 transitions. Word has length 162 [2023-12-20 14:46:32,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:46:32,627 INFO L495 AbstractCegarLoop]: Abstraction has 1033 states and 1680 transitions. [2023-12-20 14:46:32,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:46:32,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1033 states and 1680 transitions. [2023-12-20 14:46:32,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 14:46:32,628 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:46:32,629 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] [2023-12-20 14:46:32,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 14:46:32,629 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:46:32,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:46:32,629 INFO L85 PathProgramCache]: Analyzing trace with hash 206962650, now seen corresponding path program 1 times [2023-12-20 14:46:32,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:46:32,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877039600] [2023-12-20 14:46:32,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:46:32,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:46:32,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:32,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:46:32,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:32,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:46:32,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:32,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 14:46:32,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:32,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 14:46:32,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:32,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 14:46:32,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:32,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:46:32,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:46:32,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877039600] [2023-12-20 14:46:32,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877039600] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:46:32,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:46:32,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:46:32,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419447067] [2023-12-20 14:46:32,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:46:32,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:46:32,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:46:32,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:46:32,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:46:32,927 INFO L87 Difference]: Start difference. First operand 1033 states and 1680 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:46:36,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:46:36,677 INFO L93 Difference]: Finished difference Result 3421 states and 5661 transitions. [2023-12-20 14:46:36,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:46:36,677 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 14:46:36,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:46:36,690 INFO L225 Difference]: With dead ends: 3421 [2023-12-20 14:46:36,690 INFO L226 Difference]: Without dead ends: 2407 [2023-12-20 14:46:36,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:46:36,696 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 1519 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 3743 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 3810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-20 14:46:36,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1538 Valid, 2051 Invalid, 3810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3743 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-20 14:46:36,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2407 states. [2023-12-20 14:46:36,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2407 to 1686. [2023-12-20 14:46:36,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1686 states, 1539 states have (on average 1.6257309941520468) internal successors, (2502), 1545 states have internal predecessors, (2502), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2023-12-20 14:46:36,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1686 states to 1686 states and 2737 transitions. [2023-12-20 14:46:36,820 INFO L78 Accepts]: Start accepts. Automaton has 1686 states and 2737 transitions. Word has length 162 [2023-12-20 14:46:36,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:46:36,820 INFO L495 AbstractCegarLoop]: Abstraction has 1686 states and 2737 transitions. [2023-12-20 14:46:36,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:46:36,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1686 states and 2737 transitions. [2023-12-20 14:46:36,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 14:46:36,823 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:46:36,823 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] [2023-12-20 14:46:36,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 14:46:36,824 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:46:36,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:46:36,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1580907172, now seen corresponding path program 1 times [2023-12-20 14:46:36,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:46:36,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142844925] [2023-12-20 14:46:36,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:46:36,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:46:36,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:36,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:46:36,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:37,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:46:37,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:37,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 14:46:37,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:37,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 14:46:37,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:37,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 14:46:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:37,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:46:37,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:46:37,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142844925] [2023-12-20 14:46:37,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142844925] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:46:37,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:46:37,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:46:37,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597211980] [2023-12-20 14:46:37,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:46:37,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:46:37,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:46:37,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:46:37,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:46:37,102 INFO L87 Difference]: Start difference. First operand 1686 states and 2737 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:46:39,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:46:39,017 INFO L93 Difference]: Finished difference Result 4062 states and 6709 transitions. [2023-12-20 14:46:39,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 14:46:39,018 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 14:46:39,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:46:39,028 INFO L225 Difference]: With dead ends: 4062 [2023-12-20 14:46:39,028 INFO L226 Difference]: Without dead ends: 2395 [2023-12-20 14:46:39,032 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 [2023-12-20 14:46:39,033 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 1087 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 1913 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1107 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 1982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:46:39,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1107 Valid, 1051 Invalid, 1982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1913 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 14:46:39,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2395 states. [2023-12-20 14:46:39,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2395 to 1686. [2023-12-20 14:46:39,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1686 states, 1539 states have (on average 1.6224821312540612) internal successors, (2497), 1545 states have internal predecessors, (2497), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2023-12-20 14:46:39,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1686 states to 1686 states and 2732 transitions. [2023-12-20 14:46:39,131 INFO L78 Accepts]: Start accepts. Automaton has 1686 states and 2732 transitions. Word has length 162 [2023-12-20 14:46:39,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:46:39,132 INFO L495 AbstractCegarLoop]: Abstraction has 1686 states and 2732 transitions. [2023-12-20 14:46:39,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:46:39,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1686 states and 2732 transitions. [2023-12-20 14:46:39,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 14:46:39,134 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:46:39,135 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] [2023-12-20 14:46:39,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 14:46:39,135 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:46:39,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:46:39,135 INFO L85 PathProgramCache]: Analyzing trace with hash 578176922, now seen corresponding path program 1 times [2023-12-20 14:46:39,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:46:39,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427560594] [2023-12-20 14:46:39,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:46:39,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:46:39,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:39,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:46:39,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:39,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:46:39,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:39,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 14:46:39,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:39,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 14:46:39,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:39,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 14:46:39,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:39,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:46:39,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:46:39,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427560594] [2023-12-20 14:46:39,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427560594] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:46:39,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:46:39,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:46:39,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595375909] [2023-12-20 14:46:39,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:46:39,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:46:39,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:46:39,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:46:39,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:46:39,393 INFO L87 Difference]: Start difference. First operand 1686 states and 2732 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:46:41,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:46:41,302 INFO L93 Difference]: Finished difference Result 4056 states and 6683 transitions. [2023-12-20 14:46:41,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 14:46:41,302 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 14:46:41,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:46:41,311 INFO L225 Difference]: With dead ends: 4056 [2023-12-20 14:46:41,311 INFO L226 Difference]: Without dead ends: 2389 [2023-12-20 14:46:41,315 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 [2023-12-20 14:46:41,316 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 1090 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 1892 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1110 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 1961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:46:41,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1110 Valid, 1051 Invalid, 1961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1892 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 14:46:41,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2023-12-20 14:46:41,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 1686. [2023-12-20 14:46:41,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1686 states, 1539 states have (on average 1.6192332683560753) internal successors, (2492), 1545 states have internal predecessors, (2492), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2023-12-20 14:46:41,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1686 states to 1686 states and 2727 transitions. [2023-12-20 14:46:41,415 INFO L78 Accepts]: Start accepts. Automaton has 1686 states and 2727 transitions. Word has length 162 [2023-12-20 14:46:41,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:46:41,415 INFO L495 AbstractCegarLoop]: Abstraction has 1686 states and 2727 transitions. [2023-12-20 14:46:41,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:46:41,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1686 states and 2727 transitions. [2023-12-20 14:46:41,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 14:46:41,417 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:46:41,417 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] [2023-12-20 14:46:41,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 14:46:41,418 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:46:41,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:46:41,418 INFO L85 PathProgramCache]: Analyzing trace with hash 647824796, now seen corresponding path program 1 times [2023-12-20 14:46:41,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:46:41,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837129331] [2023-12-20 14:46:41,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:46:41,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:46:41,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:41,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:46:41,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:41,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:46:41,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:41,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 14:46:41,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:41,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 14:46:41,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:41,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 14:46:41,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:41,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:46:41,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:46:41,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837129331] [2023-12-20 14:46:41,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837129331] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:46:41,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:46:41,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:46:41,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590047374] [2023-12-20 14:46:41,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:46:41,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:46:41,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:46:41,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:46:41,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:46:41,669 INFO L87 Difference]: Start difference. First operand 1686 states and 2727 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:46:44,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:46:44,958 INFO L93 Difference]: Finished difference Result 5811 states and 9534 transitions. [2023-12-20 14:46:44,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:46:44,958 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 14:46:44,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:46:44,972 INFO L225 Difference]: With dead ends: 5811 [2023-12-20 14:46:44,973 INFO L226 Difference]: Without dead ends: 4144 [2023-12-20 14:46:44,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:46:44,979 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 1614 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 3046 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1633 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 3153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 3046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:46:44,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1633 Valid, 1330 Invalid, 3153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 3046 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 14:46:44,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4144 states. [2023-12-20 14:46:45,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4144 to 3006. [2023-12-20 14:46:45,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3006 states, 2747 states have (on average 1.6141244994539499) internal successors, (4434), 2757 states have internal predecessors, (4434), 196 states have call successors, (196), 55 states have call predecessors, (196), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2023-12-20 14:46:45,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3006 states to 3006 states and 4859 transitions. [2023-12-20 14:46:45,193 INFO L78 Accepts]: Start accepts. Automaton has 3006 states and 4859 transitions. Word has length 162 [2023-12-20 14:46:45,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:46:45,194 INFO L495 AbstractCegarLoop]: Abstraction has 3006 states and 4859 transitions. [2023-12-20 14:46:45,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:46:45,207 INFO L276 IsEmpty]: Start isEmpty. Operand 3006 states and 4859 transitions. [2023-12-20 14:46:45,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 14:46:45,210 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:46:45,210 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:46:45,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 14:46:45,210 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:46:45,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:46:45,211 INFO L85 PathProgramCache]: Analyzing trace with hash 2046778398, now seen corresponding path program 1 times [2023-12-20 14:46:45,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:46:45,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839957462] [2023-12-20 14:46:45,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:46:45,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:46:45,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:45,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:46:45,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:45,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:46:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:45,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 14:46:45,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:45,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 14:46:45,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:45,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 14:46:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:45,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:46:45,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:46:45,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839957462] [2023-12-20 14:46:45,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839957462] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:46:45,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:46:45,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:46:45,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309832017] [2023-12-20 14:46:45,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:46:45,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:46:45,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:46:45,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:46:45,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:46:45,452 INFO L87 Difference]: Start difference. First operand 3006 states and 4859 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:46:47,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:46:47,343 INFO L93 Difference]: Finished difference Result 7154 states and 11739 transitions. [2023-12-20 14:46:47,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 14:46:47,343 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 14:46:47,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:46:47,357 INFO L225 Difference]: With dead ends: 7154 [2023-12-20 14:46:47,357 INFO L226 Difference]: Without dead ends: 4167 [2023-12-20 14:46:47,366 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 [2023-12-20 14:46:47,366 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 1088 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 1858 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1108 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 1927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:46:47,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1108 Valid, 1051 Invalid, 1927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1858 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 14:46:47,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4167 states. [2023-12-20 14:46:47,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4167 to 3006. [2023-12-20 14:46:47,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3006 states, 2747 states have (on average 1.610848198034219) internal successors, (4425), 2757 states have internal predecessors, (4425), 196 states have call successors, (196), 55 states have call predecessors, (196), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2023-12-20 14:46:47,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3006 states to 3006 states and 4850 transitions. [2023-12-20 14:46:47,578 INFO L78 Accepts]: Start accepts. Automaton has 3006 states and 4850 transitions. Word has length 162 [2023-12-20 14:46:47,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:46:47,578 INFO L495 AbstractCegarLoop]: Abstraction has 3006 states and 4850 transitions. [2023-12-20 14:46:47,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:46:47,579 INFO L276 IsEmpty]: Start isEmpty. Operand 3006 states and 4850 transitions. [2023-12-20 14:46:47,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 14:46:47,581 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:46:47,581 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] [2023-12-20 14:46:47,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 14:46:47,582 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:46:47,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:46:47,583 INFO L85 PathProgramCache]: Analyzing trace with hash 429337948, now seen corresponding path program 1 times [2023-12-20 14:46:47,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:46:47,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58298151] [2023-12-20 14:46:47,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:46:47,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:46:47,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:47,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:46:47,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:47,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:46:47,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:47,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 14:46:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:47,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 14:46:47,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:47,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 14:46:47,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:47,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:46:47,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:46:47,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58298151] [2023-12-20 14:46:47,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58298151] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:46:47,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:46:47,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:46:47,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420148430] [2023-12-20 14:46:47,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:46:47,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:46:47,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:46:47,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:46:47,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:46:47,831 INFO L87 Difference]: Start difference. First operand 3006 states and 4850 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:46:51,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:46:51,535 INFO L93 Difference]: Finished difference Result 10619 states and 17352 transitions. [2023-12-20 14:46:51,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:46:51,536 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 14:46:51,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:46:51,571 INFO L225 Difference]: With dead ends: 10619 [2023-12-20 14:46:51,572 INFO L226 Difference]: Without dead ends: 7632 [2023-12-20 14:46:51,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:46:51,582 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 1497 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 3624 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 3691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:46:51,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 2051 Invalid, 3691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3624 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 14:46:51,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7632 states. [2023-12-20 14:46:51,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7632 to 5656. [2023-12-20 14:46:51,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5656 states, 5173 states have (on average 1.6062246278755075) internal successors, (8309), 5191 states have internal predecessors, (8309), 364 states have call successors, (364), 103 states have call predecessors, (364), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2023-12-20 14:46:51,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5656 states to 5656 states and 9132 transitions. [2023-12-20 14:46:51,942 INFO L78 Accepts]: Start accepts. Automaton has 5656 states and 9132 transitions. Word has length 162 [2023-12-20 14:46:51,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:46:51,943 INFO L495 AbstractCegarLoop]: Abstraction has 5656 states and 9132 transitions. [2023-12-20 14:46:51,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:46:51,943 INFO L276 IsEmpty]: Start isEmpty. Operand 5656 states and 9132 transitions. [2023-12-20 14:46:51,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 14:46:51,947 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:46:51,947 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] [2023-12-20 14:46:51,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 14:46:51,947 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:46:51,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:46:51,948 INFO L85 PathProgramCache]: Analyzing trace with hash 792804446, now seen corresponding path program 1 times [2023-12-20 14:46:51,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:46:51,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347879286] [2023-12-20 14:46:51,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:46:51,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:46:51,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:52,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:46:52,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:52,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:46:52,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:52,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 14:46:52,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:52,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 14:46:52,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:52,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 14:46:52,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:52,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:46:52,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:46:52,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347879286] [2023-12-20 14:46:52,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347879286] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:46:52,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:46:52,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:46:52,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308736663] [2023-12-20 14:46:52,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:46:52,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:46:52,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:46:52,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:46:52,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:46:52,202 INFO L87 Difference]: Start difference. First operand 5656 states and 9132 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:46:56,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:46:56,168 INFO L93 Difference]: Finished difference Result 20251 states and 33120 transitions. [2023-12-20 14:46:56,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:46:56,177 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 14:46:56,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:46:56,243 INFO L225 Difference]: With dead ends: 20251 [2023-12-20 14:46:56,243 INFO L226 Difference]: Without dead ends: 14614 [2023-12-20 14:46:56,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:46:56,267 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 1496 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 3611 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 3678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 14:46:56,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1515 Valid, 2051 Invalid, 3678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3611 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 14:46:56,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14614 states. [2023-12-20 14:46:56,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14614 to 10969. [2023-12-20 14:46:56,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10969 states, 10038 states have (on average 1.6034070531978482) internal successors, (16095), 10072 states have internal predecessors, (16095), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2023-12-20 14:46:56,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10969 states to 10969 states and 17768 transitions. [2023-12-20 14:46:56,954 INFO L78 Accepts]: Start accepts. Automaton has 10969 states and 17768 transitions. Word has length 162 [2023-12-20 14:46:56,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:46:56,954 INFO L495 AbstractCegarLoop]: Abstraction has 10969 states and 17768 transitions. [2023-12-20 14:46:56,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:46:56,954 INFO L276 IsEmpty]: Start isEmpty. Operand 10969 states and 17768 transitions. [2023-12-20 14:46:56,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 14:46:56,964 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:46:56,964 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] [2023-12-20 14:46:56,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 14:46:56,964 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:46:56,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:46:56,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1081623836, now seen corresponding path program 1 times [2023-12-20 14:46:56,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:46:56,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42949423] [2023-12-20 14:46:56,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:46:56,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:46:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:57,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:46:57,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:57,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:46:57,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:57,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 14:46:57,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:57,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 14:46:57,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:57,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 14:46:57,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:57,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:46:57,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:46:57,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42949423] [2023-12-20 14:46:57,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42949423] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:46:57,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:46:57,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:46:57,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993937656] [2023-12-20 14:46:57,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:46:57,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:46:57,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:46:57,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:46:57,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:46:57,258 INFO L87 Difference]: Start difference. First operand 10969 states and 17768 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:47:01,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:47:01,603 INFO L93 Difference]: Finished difference Result 39514 states and 64846 transitions. [2023-12-20 14:47:01,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:47:01,605 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 14:47:01,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:47:01,712 INFO L225 Difference]: With dead ends: 39514 [2023-12-20 14:47:01,712 INFO L226 Difference]: Without dead ends: 28564 [2023-12-20 14:47:01,750 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 [2023-12-20 14:47:01,750 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 1495 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 3598 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 3665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:47:01,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 2051 Invalid, 3665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3598 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 14:47:01,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28564 states. [2023-12-20 14:47:03,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28564 to 21626. [2023-12-20 14:47:03,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21626 states, 19799 states have (on average 1.6017475630082327) internal successors, (31713), 19865 states have internal predecessors, (31713), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2023-12-20 14:47:03,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21626 states to 21626 states and 35248 transitions. [2023-12-20 14:47:03,186 INFO L78 Accepts]: Start accepts. Automaton has 21626 states and 35248 transitions. Word has length 162 [2023-12-20 14:47:03,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:47:03,187 INFO L495 AbstractCegarLoop]: Abstraction has 21626 states and 35248 transitions. [2023-12-20 14:47:03,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:47:03,187 INFO L276 IsEmpty]: Start isEmpty. Operand 21626 states and 35248 transitions. [2023-12-20 14:47:03,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 14:47:03,201 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:47:03,201 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] [2023-12-20 14:47:03,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 14:47:03,201 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:47:03,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:47:03,202 INFO L85 PathProgramCache]: Analyzing trace with hash 536751262, now seen corresponding path program 1 times [2023-12-20 14:47:03,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:47:03,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076971515] [2023-12-20 14:47:03,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:47:03,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:47:03,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:03,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:47:03,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:03,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:47:03,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:03,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 14:47:03,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:03,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 14:47:03,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:03,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 14:47:03,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:03,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:47:03,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:47:03,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076971515] [2023-12-20 14:47:03,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076971515] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:47:03,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:47:03,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:47:03,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916304480] [2023-12-20 14:47:03,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:47:03,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:47:03,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:47:03,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:47:03,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:47:03,430 INFO L87 Difference]: Start difference. First operand 21626 states and 35248 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:47:06,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:47:06,136 INFO L93 Difference]: Finished difference Result 50602 states and 83834 transitions. [2023-12-20 14:47:06,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 14:47:06,137 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 14:47:06,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:47:06,276 INFO L225 Difference]: With dead ends: 50602 [2023-12-20 14:47:06,276 INFO L226 Difference]: Without dead ends: 28995 [2023-12-20 14:47:06,337 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 [2023-12-20 14:47:06,337 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 1242 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 1641 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1262 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 1738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:47:06,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1262 Valid, 884 Invalid, 1738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1641 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 14:47:06,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28995 states. [2023-12-20 14:47:07,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28995 to 21626. [2023-12-20 14:47:07,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21626 states, 19799 states have (on average 1.598464568917622) internal successors, (31648), 19865 states have internal predecessors, (31648), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2023-12-20 14:47:07,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21626 states to 21626 states and 35183 transitions. [2023-12-20 14:47:07,479 INFO L78 Accepts]: Start accepts. Automaton has 21626 states and 35183 transitions. Word has length 162 [2023-12-20 14:47:07,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:47:07,480 INFO L495 AbstractCegarLoop]: Abstraction has 21626 states and 35183 transitions. [2023-12-20 14:47:07,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:47:07,480 INFO L276 IsEmpty]: Start isEmpty. Operand 21626 states and 35183 transitions. [2023-12-20 14:47:07,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 14:47:07,494 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:47:07,494 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] [2023-12-20 14:47:07,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 14:47:07,494 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:47:07,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:47:07,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1211911388, now seen corresponding path program 1 times [2023-12-20 14:47:07,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:47:07,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859374582] [2023-12-20 14:47:07,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:47:07,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:47:07,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:07,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:47:07,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:07,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:47:07,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:07,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 14:47:07,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:07,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 14:47:07,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:07,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 14:47:07,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:07,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:47:07,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:47:07,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859374582] [2023-12-20 14:47:07,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859374582] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:47:07,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:47:07,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:47:07,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64733313] [2023-12-20 14:47:07,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:47:07,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:47:07,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:47:07,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:47:07,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:47:07,863 INFO L87 Difference]: Start difference. First operand 21626 states and 35183 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:47:10,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:47:10,672 INFO L93 Difference]: Finished difference Result 50536 states and 83507 transitions. [2023-12-20 14:47:10,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 14:47:10,673 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 14:47:10,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:47:10,821 INFO L225 Difference]: With dead ends: 50536 [2023-12-20 14:47:10,821 INFO L226 Difference]: Without dead ends: 28929 [2023-12-20 14:47:10,890 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 [2023-12-20 14:47:10,892 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 1092 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 1791 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1112 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 1860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:47:10,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1112 Valid, 1051 Invalid, 1860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1791 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 14:47:10,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28929 states. [2023-12-20 14:47:12,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28929 to 21626. [2023-12-20 14:47:12,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21626 states, 19799 states have (on average 1.5951815748270115) internal successors, (31583), 19865 states have internal predecessors, (31583), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2023-12-20 14:47:12,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21626 states to 21626 states and 35118 transitions. [2023-12-20 14:47:12,436 INFO L78 Accepts]: Start accepts. Automaton has 21626 states and 35118 transitions. Word has length 162 [2023-12-20 14:47:12,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:47:12,437 INFO L495 AbstractCegarLoop]: Abstraction has 21626 states and 35118 transitions. [2023-12-20 14:47:12,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:47:12,437 INFO L276 IsEmpty]: Start isEmpty. Operand 21626 states and 35118 transitions. [2023-12-20 14:47:12,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 14:47:12,450 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:47:12,450 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] [2023-12-20 14:47:12,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 14:47:12,450 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:47:12,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:47:12,451 INFO L85 PathProgramCache]: Analyzing trace with hash 263859422, now seen corresponding path program 1 times [2023-12-20 14:47:12,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:47:12,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222365232] [2023-12-20 14:47:12,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:47:12,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:47:12,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:12,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:47:12,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:12,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:47:12,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:12,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 14:47:12,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:12,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 14:47:12,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:12,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 14:47:12,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:12,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:47:12,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:47:12,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222365232] [2023-12-20 14:47:12,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222365232] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:47:12,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:47:12,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:47:12,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082364694] [2023-12-20 14:47:12,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:47:12,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:47:12,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:47:12,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:47:12,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:47:12,719 INFO L87 Difference]: Start difference. First operand 21626 states and 35118 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:47:18,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:47:18,671 INFO L93 Difference]: Finished difference Result 87123 states and 142898 transitions. [2023-12-20 14:47:18,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:47:18,672 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 14:47:18,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:47:18,906 INFO L225 Difference]: With dead ends: 87123 [2023-12-20 14:47:18,906 INFO L226 Difference]: Without dead ends: 65516 [2023-12-20 14:47:18,963 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 [2023-12-20 14:47:18,963 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 1673 mSDsluCounter, 1084 mSDsCounter, 0 mSdLazyCounter, 3754 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1691 SdHoareTripleChecker+Valid, 1402 SdHoareTripleChecker+Invalid, 3857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 3754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:47:18,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1691 Valid, 1402 Invalid, 3857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 3754 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-20 14:47:19,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65516 states. [2023-12-20 14:47:21,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65516 to 42558. [2023-12-20 14:47:21,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42558 states, 39003 states have (on average 1.591851908827526) internal successors, (62087), 39133 states have internal predecessors, (62087), 2652 states have call successors, (2652), 775 states have call predecessors, (2652), 902 states have return successors, (4965), 2777 states have call predecessors, (4965), 2650 states have call successors, (4965) [2023-12-20 14:47:21,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42558 states to 42558 states and 69704 transitions. [2023-12-20 14:47:21,364 INFO L78 Accepts]: Start accepts. Automaton has 42558 states and 69704 transitions. Word has length 162 [2023-12-20 14:47:21,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:47:21,364 INFO L495 AbstractCegarLoop]: Abstraction has 42558 states and 69704 transitions. [2023-12-20 14:47:21,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:47:21,365 INFO L276 IsEmpty]: Start isEmpty. Operand 42558 states and 69704 transitions. [2023-12-20 14:47:21,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 14:47:21,389 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:47:21,390 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] [2023-12-20 14:47:21,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 14:47:21,390 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:47:21,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:47:21,390 INFO L85 PathProgramCache]: Analyzing trace with hash -170646176, now seen corresponding path program 1 times [2023-12-20 14:47:21,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:47:21,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737720956] [2023-12-20 14:47:21,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:47:21,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:47:21,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:21,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:47:21,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:21,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:47:21,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:21,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 14:47:21,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:21,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 14:47:21,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:21,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 14:47:21,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:21,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:47:21,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:47:21,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737720956] [2023-12-20 14:47:21,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737720956] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:47:21,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:47:21,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:47:21,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759415958] [2023-12-20 14:47:21,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:47:21,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:47:21,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:47:21,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:47:21,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:47:21,639 INFO L87 Difference]: Start difference. First operand 42558 states and 69704 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:47:28,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:47:28,672 INFO L93 Difference]: Finished difference Result 170133 states and 281438 transitions. [2023-12-20 14:47:28,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:47:28,672 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 14:47:28,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:47:29,329 INFO L225 Difference]: With dead ends: 170133 [2023-12-20 14:47:29,329 INFO L226 Difference]: Without dead ends: 127594 [2023-12-20 14:47:29,426 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 [2023-12-20 14:47:29,427 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 1845 mSDsluCounter, 1572 mSDsCounter, 0 mSdLazyCounter, 3493 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1877 SdHoareTripleChecker+Valid, 2044 SdHoareTripleChecker+Invalid, 3563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 3493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 14:47:29,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1877 Valid, 2044 Invalid, 3563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 3493 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 14:47:29,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127594 states. [2023-12-20 14:47:33,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127594 to 84927. [2023-12-20 14:47:34,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84927 states, 77980 states have (on average 1.5914978199538343) internal successors, (124105), 78238 states have internal predecessors, (124105), 5148 states have call successors, (5148), 1543 states have call predecessors, (5148), 1798 states have return successors, (11963), 5401 states have call predecessors, (11963), 5146 states have call successors, (11963) [2023-12-20 14:47:34,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84927 states to 84927 states and 141216 transitions. [2023-12-20 14:47:34,498 INFO L78 Accepts]: Start accepts. Automaton has 84927 states and 141216 transitions. Word has length 162 [2023-12-20 14:47:34,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:47:34,499 INFO L495 AbstractCegarLoop]: Abstraction has 84927 states and 141216 transitions. [2023-12-20 14:47:34,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:47:34,499 INFO L276 IsEmpty]: Start isEmpty. Operand 84927 states and 141216 transitions. [2023-12-20 14:47:34,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 14:47:34,549 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:47:34,549 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] [2023-12-20 14:47:34,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-20 14:47:34,550 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:47:34,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:47:34,550 INFO L85 PathProgramCache]: Analyzing trace with hash -600304482, now seen corresponding path program 1 times [2023-12-20 14:47:34,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:47:34,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721862504] [2023-12-20 14:47:34,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:47:34,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:47:34,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:34,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:47:34,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:34,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:47:34,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:34,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 14:47:34,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:34,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 14:47:34,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:34,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 14:47:34,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:34,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:47:34,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:47:34,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721862504] [2023-12-20 14:47:34,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721862504] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:47:34,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:47:34,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:47:34,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164582896] [2023-12-20 14:47:34,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:47:34,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:47:34,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:47:34,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:47:34,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:47:34,964 INFO L87 Difference]: Start difference. First operand 84927 states and 141216 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:47:46,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:47:46,443 INFO L93 Difference]: Finished difference Result 335636 states and 563572 transitions. [2023-12-20 14:47:46,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:47:46,444 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 14:47:46,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:47:47,578 INFO L225 Difference]: With dead ends: 335636 [2023-12-20 14:47:47,578 INFO L226 Difference]: Without dead ends: 250728 [2023-12-20 14:47:47,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:47:47,774 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 1563 mSDsluCounter, 1572 mSDsCounter, 0 mSdLazyCounter, 4065 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1581 SdHoareTripleChecker+Valid, 2044 SdHoareTripleChecker+Invalid, 4134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 4065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:47:47,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1581 Valid, 2044 Invalid, 4134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 4065 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-20 14:47:47,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250728 states. [2023-12-20 14:47:57,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250728 to 169664. [2023-12-20 14:47:57,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169664 states, 156061 states have (on average 1.5916532637878777) internal successors, (248395), 156575 states have internal predecessors, (248395), 10012 states have call successors, (10012), 3079 states have call predecessors, (10012), 3590 states have return successors, (30205), 10521 states have call predecessors, (30205), 10010 states have call successors, (30205) [2023-12-20 14:47:58,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169664 states to 169664 states and 288612 transitions. [2023-12-20 14:47:58,230 INFO L78 Accepts]: Start accepts. Automaton has 169664 states and 288612 transitions. Word has length 162 [2023-12-20 14:47:58,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:47:58,230 INFO L495 AbstractCegarLoop]: Abstraction has 169664 states and 288612 transitions. [2023-12-20 14:47:58,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:47:58,231 INFO L276 IsEmpty]: Start isEmpty. Operand 169664 states and 288612 transitions. [2023-12-20 14:47:58,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 14:47:58,550 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:47:58,550 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] [2023-12-20 14:47:58,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-20 14:47:58,550 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:47:58,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:47:58,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1306901088, now seen corresponding path program 1 times [2023-12-20 14:47:58,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:47:58,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51091527] [2023-12-20 14:47:58,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:47:58,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:47:58,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:58,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:47:58,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:58,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:47:58,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:58,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 14:47:58,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:58,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 14:47:58,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:58,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 14:47:58,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:58,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:47:58,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:47:58,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51091527] [2023-12-20 14:47:58,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51091527] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:47:58,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:47:58,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:47:58,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335600780] [2023-12-20 14:47:58,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:47:58,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:47:58,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:47:58,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:47:58,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:47:58,793 INFO L87 Difference]: Start difference. First operand 169664 states and 288612 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:48:17,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:48:17,614 INFO L93 Difference]: Finished difference Result 662803 states and 1138682 transitions. [2023-12-20 14:48:17,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:48:17,614 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 14:48:17,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted.