/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.06.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 18:04:21,122 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 18:04:21,211 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 18:04:21,215 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 18:04:21,215 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 18:04:21,240 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 18:04:21,241 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 18:04:21,241 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 18:04:21,242 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 18:04:21,242 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 18:04:21,243 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 18:04:21,243 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 18:04:21,243 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 18:04:21,244 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 18:04:21,244 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 18:04:21,245 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 18:04:21,245 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 18:04:21,245 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 18:04:21,246 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 18:04:21,246 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 18:04:21,246 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 18:04:21,247 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 18:04:21,247 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 18:04:21,247 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 18:04:21,248 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 18:04:21,248 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 18:04:21,248 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 18:04:21,249 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 18:04:21,249 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 18:04:21,249 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 18:04:21,250 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 18:04:21,250 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 18:04:21,250 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:04:21,251 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 18:04:21,251 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 18:04:21,251 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 18:04:21,252 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 18:04:21,252 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 18:04:21,252 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 18:04:21,253 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 18:04:21,253 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 18:04:21,254 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 18:04:21,254 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 18:04:21,254 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 18:04:21,532 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 18:04:21,556 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 18:04:21,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 18:04:21,560 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 18:04:21,560 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 18:04:21,561 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.06.cil-1.c [2023-12-15 18:04:22,790 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 18:04:23,005 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 18:04:23,006 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.06.cil-1.c [2023-12-15 18:04:23,020 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53def432f/68e2375057d649e78b5bdf51c8f90dbc/FLAGf1523ad4a [2023-12-15 18:04:23,033 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53def432f/68e2375057d649e78b5bdf51c8f90dbc [2023-12-15 18:04:23,035 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 18:04:23,036 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 18:04:23,037 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 18:04:23,037 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 18:04:23,041 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 18:04:23,042 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:04:23" (1/1) ... [2023-12-15 18:04:23,043 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a2fe6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:23, skipping insertion in model container [2023-12-15 18:04:23,043 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:04:23" (1/1) ... [2023-12-15 18:04:23,093 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 18:04:23,245 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.06.cil-1.c[913,926] [2023-12-15 18:04:23,286 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.06.cil-1.c[5977,5990] [2023-12-15 18:04:23,347 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:04:23,367 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 18:04:23,377 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.06.cil-1.c[913,926] [2023-12-15 18:04:23,391 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.06.cil-1.c[5977,5990] [2023-12-15 18:04:23,434 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:04:23,466 INFO L206 MainTranslator]: Completed translation [2023-12-15 18:04:23,469 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:23 WrapperNode [2023-12-15 18:04:23,470 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 18:04:23,471 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 18:04:23,471 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 18:04:23,471 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 18:04:23,477 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:23" (1/1) ... [2023-12-15 18:04:23,499 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:23" (1/1) ... [2023-12-15 18:04:23,557 INFO L138 Inliner]: procedures = 60, calls = 67, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 729 [2023-12-15 18:04:23,561 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 18:04:23,562 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 18:04:23,562 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 18:04:23,562 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 18:04:23,574 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:23" (1/1) ... [2023-12-15 18:04:23,574 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:23" (1/1) ... [2023-12-15 18:04:23,583 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:23" (1/1) ... [2023-12-15 18:04:23,611 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]. [2023-12-15 18:04:23,612 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:23" (1/1) ... [2023-12-15 18:04:23,612 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:23" (1/1) ... [2023-12-15 18:04:23,625 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:23" (1/1) ... [2023-12-15 18:04:23,647 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:23" (1/1) ... [2023-12-15 18:04:23,650 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:23" (1/1) ... [2023-12-15 18:04:23,655 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:23" (1/1) ... [2023-12-15 18:04:23,659 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 18:04:23,660 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 18:04:23,660 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 18:04:23,660 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 18:04:23,661 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:23" (1/1) ... [2023-12-15 18:04:23,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:04:23,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:04:23,698 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) [2023-12-15 18:04:23,727 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 [2023-12-15 18:04:23,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 18:04:23,736 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-15 18:04:23,736 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-15 18:04:23,738 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2023-12-15 18:04:23,738 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2023-12-15 18:04:23,738 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-15 18:04:23,739 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-15 18:04:23,739 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-15 18:04:23,739 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-15 18:04:23,739 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-15 18:04:23,739 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-15 18:04:23,739 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-15 18:04:23,739 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-15 18:04:23,739 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-15 18:04:23,739 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-15 18:04:23,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 18:04:23,739 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-15 18:04:23,740 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-15 18:04:23,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 18:04:23,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 18:04:23,740 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-15 18:04:23,740 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-15 18:04:23,740 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2023-12-15 18:04:23,741 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2023-12-15 18:04:23,871 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 18:04:23,875 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 18:04:24,584 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 18:04:24,628 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 18:04:24,628 INFO L309 CfgBuilder]: Removed 13 assume(true) statements. [2023-12-15 18:04:24,629 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:04:24 BoogieIcfgContainer [2023-12-15 18:04:24,629 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 18:04:24,631 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 18:04:24,631 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 18:04:24,634 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 18:04:24,634 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 06:04:23" (1/3) ... [2023-12-15 18:04:24,635 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b29b591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:04:24, skipping insertion in model container [2023-12-15 18:04:24,635 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:23" (2/3) ... [2023-12-15 18:04:24,635 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b29b591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:04:24, skipping insertion in model container [2023-12-15 18:04:24,635 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:04:24" (3/3) ... [2023-12-15 18:04:24,636 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.06.cil-1.c [2023-12-15 18:04:24,652 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 18:04:24,653 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-15 18:04:24,721 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 18:04:24,728 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;@3e6a511d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 18:04:24,728 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-15 18:04:24,734 INFO L276 IsEmpty]: Start isEmpty. Operand has 281 states, 240 states have (on average 1.7041666666666666) internal successors, (409), 247 states have internal predecessors, (409), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 26 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-15 18:04:24,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-15 18:04:24,742 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:24,743 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] [2023-12-15 18:04:24,743 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:24,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:24,747 INFO L85 PathProgramCache]: Analyzing trace with hash 761783621, now seen corresponding path program 1 times [2023-12-15 18:04:24,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:24,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670508646] [2023-12-15 18:04:24,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:24,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:24,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:25,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:04:25,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:25,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 18:04:25,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:25,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:25,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:25,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670508646] [2023-12-15 18:04:25,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670508646] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:25,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:25,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:04:25,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039430531] [2023-12-15 18:04:25,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:25,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:04:25,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:25,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:04:25,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:04:25,141 INFO L87 Difference]: Start difference. First operand has 281 states, 240 states have (on average 1.7041666666666666) internal successors, (409), 247 states have internal predecessors, (409), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 26 states have call predecessors, (28), 28 states have call successors, (28) 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) [2023-12-15 18:04:25,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:25,683 INFO L93 Difference]: Finished difference Result 608 states and 1006 transitions. [2023-12-15 18:04:25,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 18:04:25,686 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 [2023-12-15 18:04:25,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:25,705 INFO L225 Difference]: With dead ends: 608 [2023-12-15 18:04:25,705 INFO L226 Difference]: Without dead ends: 338 [2023-12-15 18:04:25,715 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 [2023-12-15 18:04:25,719 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 557 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:25,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 516 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 18:04:25,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2023-12-15 18:04:25,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 332. [2023-12-15 18:04:25,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 287 states have (on average 1.5540069686411149) internal successors, (446), 292 states have internal predecessors, (446), 32 states have call successors, (32), 12 states have call predecessors, (32), 11 states have return successors, (34), 28 states have call predecessors, (34), 28 states have call successors, (34) [2023-12-15 18:04:25,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 512 transitions. [2023-12-15 18:04:25,785 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 512 transitions. Word has length 37 [2023-12-15 18:04:25,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:25,785 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 512 transitions. [2023-12-15 18:04:25,786 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) [2023-12-15 18:04:25,786 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 512 transitions. [2023-12-15 18:04:25,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-15 18:04:25,789 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:25,789 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] [2023-12-15 18:04:25,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 18:04:25,789 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:25,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:25,790 INFO L85 PathProgramCache]: Analyzing trace with hash -886558336, now seen corresponding path program 1 times [2023-12-15 18:04:25,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:25,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795101154] [2023-12-15 18:04:25,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:25,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:25,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:25,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:04:25,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:25,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 18:04:25,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:25,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:25,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:25,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795101154] [2023-12-15 18:04:25,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795101154] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:25,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:25,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:04:25,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921892512] [2023-12-15 18:04:25,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:25,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:04:25,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:25,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:04:25,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:04:25,945 INFO L87 Difference]: Start difference. First operand 332 states and 512 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) [2023-12-15 18:04:26,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:26,285 INFO L93 Difference]: Finished difference Result 566 states and 856 transitions. [2023-12-15 18:04:26,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 18:04:26,286 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 [2023-12-15 18:04:26,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:26,292 INFO L225 Difference]: With dead ends: 566 [2023-12-15 18:04:26,292 INFO L226 Difference]: Without dead ends: 455 [2023-12-15 18:04:26,293 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 [2023-12-15 18:04:26,294 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 570 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:26,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 513 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 18:04:26,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2023-12-15 18:04:26,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 432. [2023-12-15 18:04:26,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 374 states have (on average 1.5080213903743316) internal successors, (564), 380 states have internal predecessors, (564), 40 states have call successors, (40), 16 states have call predecessors, (40), 16 states have return successors, (48), 36 states have call predecessors, (48), 36 states have call successors, (48) [2023-12-15 18:04:26,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 652 transitions. [2023-12-15 18:04:26,346 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 652 transitions. Word has length 38 [2023-12-15 18:04:26,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:26,346 INFO L495 AbstractCegarLoop]: Abstraction has 432 states and 652 transitions. [2023-12-15 18:04:26,346 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) [2023-12-15 18:04:26,347 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 652 transitions. [2023-12-15 18:04:26,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-15 18:04:26,349 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:26,349 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] [2023-12-15 18:04:26,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 18:04:26,349 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:26,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:26,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1462058693, now seen corresponding path program 1 times [2023-12-15 18:04:26,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:26,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503985236] [2023-12-15 18:04:26,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:26,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:26,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:26,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:04:26,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:26,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-15 18:04:26,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:26,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:26,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:26,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503985236] [2023-12-15 18:04:26,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503985236] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:26,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:26,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:04:26,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961927696] [2023-12-15 18:04:26,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:26,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:04:26,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:26,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:04:26,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:04:26,433 INFO L87 Difference]: Start difference. First operand 432 states and 652 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) [2023-12-15 18:04:26,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:26,834 INFO L93 Difference]: Finished difference Result 852 states and 1233 transitions. [2023-12-15 18:04:26,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 18:04:26,835 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 [2023-12-15 18:04:26,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:26,839 INFO L225 Difference]: With dead ends: 852 [2023-12-15 18:04:26,840 INFO L226 Difference]: Without dead ends: 641 [2023-12-15 18:04:26,841 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 [2023-12-15 18:04:26,842 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 233 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:26,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 712 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 18:04:26,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2023-12-15 18:04:26,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 537. [2023-12-15 18:04:26,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 467 states have (on average 1.4839400428265526) internal successors, (693), 475 states have internal predecessors, (693), 46 states have call successors, (46), 22 states have call predecessors, (46), 22 states have return successors, (54), 40 states have call predecessors, (54), 42 states have call successors, (54) [2023-12-15 18:04:26,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 793 transitions. [2023-12-15 18:04:26,896 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 793 transitions. Word has length 39 [2023-12-15 18:04:26,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:26,896 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 793 transitions. [2023-12-15 18:04:26,897 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) [2023-12-15 18:04:26,897 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 793 transitions. [2023-12-15 18:04:26,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-15 18:04:26,903 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:26,903 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] [2023-12-15 18:04:26,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 18:04:26,903 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:26,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:26,904 INFO L85 PathProgramCache]: Analyzing trace with hash -318902572, now seen corresponding path program 1 times [2023-12-15 18:04:26,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:26,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130739639] [2023-12-15 18:04:26,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:26,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:26,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:27,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:04:27,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:27,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-15 18:04:27,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:27,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:04:27,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:27,045 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-15 18:04:27,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:27,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130739639] [2023-12-15 18:04:27,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130739639] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:27,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:27,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:04:27,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130550324] [2023-12-15 18:04:27,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:27,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:04:27,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:27,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:04:27,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:04:27,051 INFO L87 Difference]: Start difference. First operand 537 states and 793 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) [2023-12-15 18:04:27,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:27,417 INFO L93 Difference]: Finished difference Result 1053 states and 1510 transitions. [2023-12-15 18:04:27,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 18:04:27,418 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 [2023-12-15 18:04:27,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:27,423 INFO L225 Difference]: With dead ends: 1053 [2023-12-15 18:04:27,423 INFO L226 Difference]: Without dead ends: 737 [2023-12-15 18:04:27,425 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 [2023-12-15 18:04:27,432 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 218 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:27,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 756 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 18:04:27,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2023-12-15 18:04:27,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 703. [2023-12-15 18:04:27,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 609 states have (on average 1.4269293924466337) internal successors, (869), 619 states have internal predecessors, (869), 60 states have call successors, (60), 30 states have call predecessors, (60), 32 states have return successors, (78), 54 states have call predecessors, (78), 56 states have call successors, (78) [2023-12-15 18:04:27,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1007 transitions. [2023-12-15 18:04:27,479 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1007 transitions. Word has length 54 [2023-12-15 18:04:27,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:27,481 INFO L495 AbstractCegarLoop]: Abstraction has 703 states and 1007 transitions. [2023-12-15 18:04:27,481 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) [2023-12-15 18:04:27,482 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1007 transitions. [2023-12-15 18:04:27,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-15 18:04:27,486 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:27,486 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] [2023-12-15 18:04:27,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 18:04:27,487 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:27,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:27,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1458765897, now seen corresponding path program 1 times [2023-12-15 18:04:27,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:27,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431498276] [2023-12-15 18:04:27,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:27,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:27,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:27,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:04:27,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:27,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 18:04:27,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:27,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:04:27,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:27,571 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-15 18:04:27,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:27,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431498276] [2023-12-15 18:04:27,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431498276] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:27,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:27,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:04:27,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511214931] [2023-12-15 18:04:27,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:27,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:04:27,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:27,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:04:27,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:04:27,573 INFO L87 Difference]: Start difference. First operand 703 states and 1007 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) [2023-12-15 18:04:27,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:27,905 INFO L93 Difference]: Finished difference Result 1282 states and 1786 transitions. [2023-12-15 18:04:27,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 18:04:27,905 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 [2023-12-15 18:04:27,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:27,911 INFO L225 Difference]: With dead ends: 1282 [2023-12-15 18:04:27,911 INFO L226 Difference]: Without dead ends: 880 [2023-12-15 18:04:27,914 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 [2023-12-15 18:04:27,915 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 556 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:27,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 525 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 18:04:27,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2023-12-15 18:04:27,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 831. [2023-12-15 18:04:27,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 721 states have (on average 1.3925104022191401) internal successors, (1004), 733 states have internal predecessors, (1004), 68 states have call successors, (68), 36 states have call predecessors, (68), 40 states have return successors, (92), 62 states have call predecessors, (92), 64 states have call successors, (92) [2023-12-15 18:04:27,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1164 transitions. [2023-12-15 18:04:27,961 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1164 transitions. Word has length 59 [2023-12-15 18:04:27,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:27,961 INFO L495 AbstractCegarLoop]: Abstraction has 831 states and 1164 transitions. [2023-12-15 18:04:27,961 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) [2023-12-15 18:04:27,961 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1164 transitions. [2023-12-15 18:04:27,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-15 18:04:27,963 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:27,963 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] [2023-12-15 18:04:27,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 18:04:27,964 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:27,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:27,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1613197552, now seen corresponding path program 1 times [2023-12-15 18:04:27,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:27,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751077760] [2023-12-15 18:04:27,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:27,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:27,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:28,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:04:28,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:28,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 18:04:28,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:28,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:04:28,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:28,052 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 18:04:28,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:28,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751077760] [2023-12-15 18:04:28,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751077760] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:04:28,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304154003] [2023-12-15 18:04:28,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:28,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:04:28,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:04:28,056 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) [2023-12-15 18:04:28,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 18:04:28,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:28,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 18:04:28,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:04:28,290 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:28,290 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 18:04:28,337 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-15 18:04:28,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304154003] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 18:04:28,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-15 18:04:28,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 7 [2023-12-15 18:04:28,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884773819] [2023-12-15 18:04:28,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:28,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:04:28,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:28,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:04:28,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:28,339 INFO L87 Difference]: Start difference. First operand 831 states and 1164 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) [2023-12-15 18:04:28,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:28,493 INFO L93 Difference]: Finished difference Result 881 states and 1226 transitions. [2023-12-15 18:04:28,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:04:28,494 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 [2023-12-15 18:04:28,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:28,498 INFO L225 Difference]: With dead ends: 881 [2023-12-15 18:04:28,498 INFO L226 Difference]: Without dead ends: 878 [2023-12-15 18:04:28,499 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 [2023-12-15 18:04:28,500 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 758 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:28,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 468 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 18:04:28,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2023-12-15 18:04:28,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 830. [2023-12-15 18:04:28,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 721 states have (on average 1.389736477115118) internal successors, (1002), 732 states have internal predecessors, (1002), 67 states have call successors, (67), 36 states have call predecessors, (67), 40 states have return successors, (92), 62 states have call predecessors, (92), 64 states have call successors, (92) [2023-12-15 18:04:28,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1161 transitions. [2023-12-15 18:04:28,552 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1161 transitions. Word has length 60 [2023-12-15 18:04:28,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:28,554 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 1161 transitions. [2023-12-15 18:04:28,554 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) [2023-12-15 18:04:28,554 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1161 transitions. [2023-12-15 18:04:28,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-15 18:04:28,556 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:28,557 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] [2023-12-15 18:04:28,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 18:04:28,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-15 18:04:28,764 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:28,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:28,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1531470822, now seen corresponding path program 1 times [2023-12-15 18:04:28,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:28,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762794553] [2023-12-15 18:04:28,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:28,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:28,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:28,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:04:28,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:28,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 18:04:28,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:28,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:04:28,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:28,852 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 18:04:28,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:28,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762794553] [2023-12-15 18:04:28,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762794553] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:04:28,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485043653] [2023-12-15 18:04:28,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:28,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:04:28,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:04:28,855 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) [2023-12-15 18:04:28,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 18:04:28,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:28,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 18:04:28,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:04:29,180 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:29,181 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 18:04:29,245 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-15 18:04:29,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485043653] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 18:04:29,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 18:04:29,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2023-12-15 18:04:29,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829883242] [2023-12-15 18:04:29,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 18:04:29,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 18:04:29,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:29,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 18:04:29,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-15 18:04:29,248 INFO L87 Difference]: Start difference. First operand 830 states and 1161 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) [2023-12-15 18:04:30,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:30,225 INFO L93 Difference]: Finished difference Result 2175 states and 2989 transitions. [2023-12-15 18:04:30,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-15 18:04:30,226 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 [2023-12-15 18:04:30,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:30,270 INFO L225 Difference]: With dead ends: 2175 [2023-12-15 18:04:30,271 INFO L226 Difference]: Without dead ends: 1693 [2023-12-15 18:04:30,273 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 [2023-12-15 18:04:30,274 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 745 mSDsluCounter, 1800 mSDsCounter, 0 mSdLazyCounter, 1570 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 2130 SdHoareTripleChecker+Invalid, 1608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:30,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 2130 Invalid, 1608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1570 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 18:04:30,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1693 states. [2023-12-15 18:04:30,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1693 to 1166. [2023-12-15 18:04:30,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 1018 states have (on average 1.3585461689587426) internal successors, (1383), 1037 states have internal predecessors, (1383), 87 states have call successors, (87), 50 states have call predecessors, (87), 59 states have return successors, (126), 79 states have call predecessors, (126), 84 states have call successors, (126) [2023-12-15 18:04:30,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1596 transitions. [2023-12-15 18:04:30,364 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1596 transitions. Word has length 61 [2023-12-15 18:04:30,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:30,364 INFO L495 AbstractCegarLoop]: Abstraction has 1166 states and 1596 transitions. [2023-12-15 18:04:30,365 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) [2023-12-15 18:04:30,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1596 transitions. [2023-12-15 18:04:30,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-15 18:04:30,368 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:30,368 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] [2023-12-15 18:04:30,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 18:04:30,574 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,SelfDestructingSolverStorable6 [2023-12-15 18:04:30,575 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:30,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:30,575 INFO L85 PathProgramCache]: Analyzing trace with hash -116911770, now seen corresponding path program 1 times [2023-12-15 18:04:30,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:30,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246924608] [2023-12-15 18:04:30,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:30,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:30,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:30,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:04:30,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:30,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 18:04:30,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:30,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:04:30,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:30,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-15 18:04:30,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:30,647 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-15 18:04:30,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:30,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246924608] [2023-12-15 18:04:30,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246924608] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:30,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:30,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:04:30,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438940770] [2023-12-15 18:04:30,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:30,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:04:30,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:30,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:04:30,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:04:30,650 INFO L87 Difference]: Start difference. First operand 1166 states and 1596 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) [2023-12-15 18:04:30,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:30,968 INFO L93 Difference]: Finished difference Result 1837 states and 2489 transitions. [2023-12-15 18:04:30,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 18:04:30,968 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 [2023-12-15 18:04:30,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:30,973 INFO L225 Difference]: With dead ends: 1837 [2023-12-15 18:04:30,973 INFO L226 Difference]: Without dead ends: 1097 [2023-12-15 18:04:30,976 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 [2023-12-15 18:04:30,978 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 569 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:30,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 543 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 18:04:30,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2023-12-15 18:04:31,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 1043. [2023-12-15 18:04:31,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 911 states have (on average 1.3600439077936333) internal successors, (1239), 929 states have internal predecessors, (1239), 79 states have call successors, (79), 44 states have call predecessors, (79), 51 states have return successors, (112), 70 states have call predecessors, (112), 76 states have call successors, (112) [2023-12-15 18:04:31,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1430 transitions. [2023-12-15 18:04:31,029 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1430 transitions. Word has length 78 [2023-12-15 18:04:31,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:31,029 INFO L495 AbstractCegarLoop]: Abstraction has 1043 states and 1430 transitions. [2023-12-15 18:04:31,029 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) [2023-12-15 18:04:31,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1430 transitions. [2023-12-15 18:04:31,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-15 18:04:31,032 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:31,033 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] [2023-12-15 18:04:31,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 18:04:31,033 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:31,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:31,033 INFO L85 PathProgramCache]: Analyzing trace with hash 206619467, now seen corresponding path program 1 times [2023-12-15 18:04:31,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:31,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769621041] [2023-12-15 18:04:31,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:31,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:31,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:31,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:04:31,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:31,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 18:04:31,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:31,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-15 18:04:31,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:31,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-15 18:04:31,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:31,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 18:04:31,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:31,157 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-15 18:04:31,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:31,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769621041] [2023-12-15 18:04:31,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769621041] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:04:31,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793686659] [2023-12-15 18:04:31,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:31,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:04:31,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:04:31,159 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) [2023-12-15 18:04:31,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 18:04:31,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:31,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:04:31,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:04:31,296 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-15 18:04:31,296 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:04:31,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793686659] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:31,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:04:31,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-15 18:04:31,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673574489] [2023-12-15 18:04:31,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:31,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:04:31,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:31,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:04:31,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:04:31,299 INFO L87 Difference]: Start difference. First operand 1043 states and 1430 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) [2023-12-15 18:04:31,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:31,383 INFO L93 Difference]: Finished difference Result 1377 states and 1853 transitions. [2023-12-15 18:04:31,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:04:31,383 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 [2023-12-15 18:04:31,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:31,385 INFO L225 Difference]: With dead ends: 1377 [2023-12-15 18:04:31,385 INFO L226 Difference]: Without dead ends: 216 [2023-12-15 18:04:31,387 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 [2023-12-15 18:04:31,389 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 56 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:31,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 803 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:04:31,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-12-15 18:04:31,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2023-12-15 18:04:31,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 187 states have (on average 1.6096256684491979) internal successors, (301), 189 states have internal predecessors, (301), 22 states have call successors, (22), 7 states have call predecessors, (22), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-15 18:04:31,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 343 transitions. [2023-12-15 18:04:31,436 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 343 transitions. Word has length 92 [2023-12-15 18:04:31,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:31,436 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 343 transitions. [2023-12-15 18:04:31,436 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) [2023-12-15 18:04:31,436 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 343 transitions. [2023-12-15 18:04:31,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-15 18:04:31,437 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:31,437 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:31,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 18:04:31,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:04:31,638 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:31,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:31,639 INFO L85 PathProgramCache]: Analyzing trace with hash 826549142, now seen corresponding path program 1 times [2023-12-15 18:04:31,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:31,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527306588] [2023-12-15 18:04:31,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:31,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:31,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:31,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:31,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:31,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 18:04:31,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:31,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-15 18:04:31,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:31,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 18:04:31,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:31,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-15 18:04:31,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:31,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:31,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:31,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527306588] [2023-12-15 18:04:31,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527306588] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:31,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:31,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 18:04:31,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961477949] [2023-12-15 18:04:31,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:31,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 18:04:31,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:31,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 18:04:31,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:04:31,756 INFO L87 Difference]: Start difference. First operand 216 states and 343 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 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) [2023-12-15 18:04:32,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:32,574 INFO L93 Difference]: Finished difference Result 494 states and 798 transitions. [2023-12-15 18:04:32,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 18:04:32,575 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 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 102 [2023-12-15 18:04:32,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:32,577 INFO L225 Difference]: With dead ends: 494 [2023-12-15 18:04:32,577 INFO L226 Difference]: Without dead ends: 286 [2023-12-15 18:04:32,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:04:32,578 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 562 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:32,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [580 Valid, 405 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 18:04:32,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2023-12-15 18:04:32,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 216. [2023-12-15 18:04:32,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 187 states have (on average 1.6042780748663101) internal successors, (300), 189 states have internal predecessors, (300), 22 states have call successors, (22), 7 states have call predecessors, (22), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-15 18:04:32,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 342 transitions. [2023-12-15 18:04:32,595 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 342 transitions. Word has length 102 [2023-12-15 18:04:32,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:32,595 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 342 transitions. [2023-12-15 18:04:32,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 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) [2023-12-15 18:04:32,595 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 342 transitions. [2023-12-15 18:04:32,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-15 18:04:32,596 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:32,596 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] [2023-12-15 18:04:32,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 18:04:32,596 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:32,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:32,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1710058132, now seen corresponding path program 1 times [2023-12-15 18:04:32,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:32,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116562903] [2023-12-15 18:04:32,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:32,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:32,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:32,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:32,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 18:04:32,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:32,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-15 18:04:32,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:32,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 18:04:32,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:32,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-15 18:04:32,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:32,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:32,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:32,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116562903] [2023-12-15 18:04:32,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116562903] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:32,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:32,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 18:04:32,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841428682] [2023-12-15 18:04:32,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:32,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:04:32,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:32,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:04:32,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:04:32,737 INFO L87 Difference]: Start difference. First operand 216 states and 342 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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) [2023-12-15 18:04:34,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:34,195 INFO L93 Difference]: Finished difference Result 769 states and 1248 transitions. [2023-12-15 18:04:34,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 18:04:34,196 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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 102 [2023-12-15 18:04:34,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:34,205 INFO L225 Difference]: With dead ends: 769 [2023-12-15 18:04:34,205 INFO L226 Difference]: Without dead ends: 566 [2023-12-15 18:04:34,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:04:34,206 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 845 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 1374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:34,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 680 Invalid, 1374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1282 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 18:04:34,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2023-12-15 18:04:34,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 425. [2023-12-15 18:04:34,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 374 states have (on average 1.6149732620320856) internal successors, (604), 377 states have internal predecessors, (604), 37 states have call successors, (37), 13 states have call predecessors, (37), 13 states have return successors, (38), 35 states have call predecessors, (38), 35 states have call successors, (38) [2023-12-15 18:04:34,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 679 transitions. [2023-12-15 18:04:34,237 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 679 transitions. Word has length 102 [2023-12-15 18:04:34,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:34,237 INFO L495 AbstractCegarLoop]: Abstraction has 425 states and 679 transitions. [2023-12-15 18:04:34,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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) [2023-12-15 18:04:34,238 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 679 transitions. [2023-12-15 18:04:34,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-15 18:04:34,238 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:34,239 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] [2023-12-15 18:04:34,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 18:04:34,240 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:34,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:34,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1398541524, now seen corresponding path program 1 times [2023-12-15 18:04:34,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:34,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045551461] [2023-12-15 18:04:34,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:34,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:34,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:34,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:34,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 18:04:34,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:34,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-15 18:04:34,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:34,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 18:04:34,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:34,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-15 18:04:34,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:34,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:34,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:34,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045551461] [2023-12-15 18:04:34,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045551461] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:34,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:34,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:04:34,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103921256] [2023-12-15 18:04:34,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:34,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:04:34,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:34,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:04:34,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:34,451 INFO L87 Difference]: Start difference. First operand 425 states and 679 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-15 18:04:36,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:36,231 INFO L93 Difference]: Finished difference Result 1264 states and 2050 transitions. [2023-12-15 18:04:36,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:04:36,232 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2023-12-15 18:04:36,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:36,236 INFO L225 Difference]: With dead ends: 1264 [2023-12-15 18:04:36,236 INFO L226 Difference]: Without dead ends: 852 [2023-12-15 18:04:36,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:04:36,238 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 907 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 1838 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 1915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:36,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 898 Invalid, 1915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1838 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 18:04:36,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2023-12-15 18:04:36,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 619. [2023-12-15 18:04:36,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 546 states have (on average 1.6080586080586081) internal successors, (878), 550 states have internal predecessors, (878), 52 states have call successors, (52), 19 states have call predecessors, (52), 20 states have return successors, (55), 51 states have call predecessors, (55), 50 states have call successors, (55) [2023-12-15 18:04:36,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 985 transitions. [2023-12-15 18:04:36,284 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 985 transitions. Word has length 102 [2023-12-15 18:04:36,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:36,284 INFO L495 AbstractCegarLoop]: Abstraction has 619 states and 985 transitions. [2023-12-15 18:04:36,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-15 18:04:36,284 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 985 transitions. [2023-12-15 18:04:36,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-15 18:04:36,287 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:36,287 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] [2023-12-15 18:04:36,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 18:04:36,288 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:36,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:36,288 INFO L85 PathProgramCache]: Analyzing trace with hash -560033262, now seen corresponding path program 1 times [2023-12-15 18:04:36,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:36,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897941958] [2023-12-15 18:04:36,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:36,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:36,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:36,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:36,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:36,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 18:04:36,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:36,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-15 18:04:36,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:36,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 18:04:36,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:36,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-15 18:04:36,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:36,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:36,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:36,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897941958] [2023-12-15 18:04:36,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897941958] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:36,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:36,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:04:36,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787386491] [2023-12-15 18:04:36,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:36,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:04:36,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:36,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:04:36,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:36,457 INFO L87 Difference]: Start difference. First operand 619 states and 985 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-15 18:04:38,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:38,350 INFO L93 Difference]: Finished difference Result 1989 states and 3220 transitions. [2023-12-15 18:04:38,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:04:38,351 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2023-12-15 18:04:38,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:38,361 INFO L225 Difference]: With dead ends: 1989 [2023-12-15 18:04:38,361 INFO L226 Difference]: Without dead ends: 1383 [2023-12-15 18:04:38,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:04:38,365 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 860 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 2089 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 2144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:38,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 1289 Invalid, 2144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2089 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-15 18:04:38,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2023-12-15 18:04:38,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 1008. [2023-12-15 18:04:38,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 891 states have (on average 1.6015712682379348) internal successors, (1427), 897 states have internal predecessors, (1427), 82 states have call successors, (82), 31 states have call predecessors, (82), 34 states have return successors, (93), 83 states have call predecessors, (93), 80 states have call successors, (93) [2023-12-15 18:04:38,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1602 transitions. [2023-12-15 18:04:38,425 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1602 transitions. Word has length 102 [2023-12-15 18:04:38,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:38,426 INFO L495 AbstractCegarLoop]: Abstraction has 1008 states and 1602 transitions. [2023-12-15 18:04:38,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-15 18:04:38,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1602 transitions. [2023-12-15 18:04:38,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-15 18:04:38,428 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:38,428 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] [2023-12-15 18:04:38,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 18:04:38,428 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:38,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:38,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1316449556, now seen corresponding path program 1 times [2023-12-15 18:04:38,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:38,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922124795] [2023-12-15 18:04:38,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:38,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:38,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:38,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:38,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:38,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 18:04:38,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:38,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-15 18:04:38,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:38,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 18:04:38,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:38,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-15 18:04:38,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:38,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:38,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:38,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922124795] [2023-12-15 18:04:38,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922124795] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:38,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:38,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:04:38,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104731088] [2023-12-15 18:04:38,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:38,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:04:38,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:38,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:04:38,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:38,598 INFO L87 Difference]: Start difference. First operand 1008 states and 1602 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-15 18:04:39,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:39,599 INFO L93 Difference]: Finished difference Result 2366 states and 3828 transitions. [2023-12-15 18:04:39,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:04:39,600 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2023-12-15 18:04:39,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:39,606 INFO L225 Difference]: With dead ends: 2366 [2023-12-15 18:04:39,606 INFO L226 Difference]: Without dead ends: 1371 [2023-12-15 18:04:39,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:04:39,610 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 637 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:39,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [651 Valid, 649 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1055 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 18:04:39,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2023-12-15 18:04:39,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 1008. [2023-12-15 18:04:39,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 891 states have (on average 1.595959595959596) internal successors, (1422), 897 states have internal predecessors, (1422), 82 states have call successors, (82), 31 states have call predecessors, (82), 34 states have return successors, (93), 83 states have call predecessors, (93), 80 states have call successors, (93) [2023-12-15 18:04:39,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1597 transitions. [2023-12-15 18:04:39,675 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1597 transitions. Word has length 102 [2023-12-15 18:04:39,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:39,676 INFO L495 AbstractCegarLoop]: Abstraction has 1008 states and 1597 transitions. [2023-12-15 18:04:39,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-15 18:04:39,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1597 transitions. [2023-12-15 18:04:39,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-15 18:04:39,677 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:39,677 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] [2023-12-15 18:04:39,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 18:04:39,677 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:39,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:39,678 INFO L85 PathProgramCache]: Analyzing trace with hash -562681390, now seen corresponding path program 1 times [2023-12-15 18:04:39,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:39,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216669249] [2023-12-15 18:04:39,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:39,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:39,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:39,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:39,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:39,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 18:04:39,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:39,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-15 18:04:39,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:39,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 18:04:39,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:39,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-15 18:04:39,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:39,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:39,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:39,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216669249] [2023-12-15 18:04:39,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216669249] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:39,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:39,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:04:39,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974707874] [2023-12-15 18:04:39,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:39,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:04:39,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:39,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:04:39,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:39,830 INFO L87 Difference]: Start difference. First operand 1008 states and 1597 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-15 18:04:40,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:40,735 INFO L93 Difference]: Finished difference Result 2355 states and 3792 transitions. [2023-12-15 18:04:40,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:04:40,735 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2023-12-15 18:04:40,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:40,742 INFO L225 Difference]: With dead ends: 2355 [2023-12-15 18:04:40,742 INFO L226 Difference]: Without dead ends: 1360 [2023-12-15 18:04:40,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:04:40,746 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 722 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:40,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 543 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 18:04:40,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2023-12-15 18:04:40,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 1008. [2023-12-15 18:04:40,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 891 states have (on average 1.590347923681257) internal successors, (1417), 897 states have internal predecessors, (1417), 82 states have call successors, (82), 31 states have call predecessors, (82), 34 states have return successors, (93), 83 states have call predecessors, (93), 80 states have call successors, (93) [2023-12-15 18:04:40,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1592 transitions. [2023-12-15 18:04:40,810 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1592 transitions. Word has length 102 [2023-12-15 18:04:40,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:40,811 INFO L495 AbstractCegarLoop]: Abstraction has 1008 states and 1592 transitions. [2023-12-15 18:04:40,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-15 18:04:40,811 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1592 transitions. [2023-12-15 18:04:40,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-15 18:04:40,812 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:40,812 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] [2023-12-15 18:04:40,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 18:04:40,813 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:40,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:40,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1004076560, now seen corresponding path program 1 times [2023-12-15 18:04:40,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:40,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299690262] [2023-12-15 18:04:40,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:40,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:40,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:40,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:40,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:40,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 18:04:40,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:40,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-15 18:04:40,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:40,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 18:04:40,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:40,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-15 18:04:40,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:40,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:40,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:40,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299690262] [2023-12-15 18:04:40,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299690262] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:40,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:40,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:04:40,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347989972] [2023-12-15 18:04:40,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:40,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:04:40,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:40,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:04:40,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:40,964 INFO L87 Difference]: Start difference. First operand 1008 states and 1592 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-15 18:04:42,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:42,821 INFO L93 Difference]: Finished difference Result 3365 states and 5383 transitions. [2023-12-15 18:04:42,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:04:42,821 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2023-12-15 18:04:42,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:42,834 INFO L225 Difference]: With dead ends: 3365 [2023-12-15 18:04:42,834 INFO L226 Difference]: Without dead ends: 2370 [2023-12-15 18:04:42,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:04:42,838 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 843 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 2013 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 2068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:42,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 1289 Invalid, 2068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2013 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 18:04:42,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2370 states. [2023-12-15 18:04:42,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2370 to 1801. [2023-12-15 18:04:42,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1801 states, 1596 states have (on average 1.5839598997493733) internal successors, (2528), 1606 states have internal predecessors, (2528), 142 states have call successors, (142), 55 states have call predecessors, (142), 62 states have return successors, (175), 147 states have call predecessors, (175), 140 states have call successors, (175) [2023-12-15 18:04:42,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1801 states to 1801 states and 2845 transitions. [2023-12-15 18:04:42,979 INFO L78 Accepts]: Start accepts. Automaton has 1801 states and 2845 transitions. Word has length 102 [2023-12-15 18:04:42,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:42,979 INFO L495 AbstractCegarLoop]: Abstraction has 1801 states and 2845 transitions. [2023-12-15 18:04:42,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-15 18:04:42,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1801 states and 2845 transitions. [2023-12-15 18:04:42,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-15 18:04:42,982 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:42,982 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] [2023-12-15 18:04:42,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 18:04:42,982 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:42,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:42,982 INFO L85 PathProgramCache]: Analyzing trace with hash -53761518, now seen corresponding path program 1 times [2023-12-15 18:04:42,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:42,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120342905] [2023-12-15 18:04:42,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:42,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:42,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:43,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:43,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:43,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 18:04:43,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:43,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-15 18:04:43,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:43,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 18:04:43,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:43,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-15 18:04:43,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:43,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:43,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:43,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120342905] [2023-12-15 18:04:43,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120342905] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:43,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:43,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:04:43,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212532010] [2023-12-15 18:04:43,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:43,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:04:43,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:43,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:04:43,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:43,152 INFO L87 Difference]: Start difference. First operand 1801 states and 2845 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-15 18:04:45,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:45,043 INFO L93 Difference]: Finished difference Result 6794 states and 10862 transitions. [2023-12-15 18:04:45,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 18:04:45,043 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2023-12-15 18:04:45,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:45,069 INFO L225 Difference]: With dead ends: 6794 [2023-12-15 18:04:45,070 INFO L226 Difference]: Without dead ends: 5006 [2023-12-15 18:04:45,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 18:04:45,078 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 1066 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 1990 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1086 SdHoareTripleChecker+Valid, 1282 SdHoareTripleChecker+Invalid, 2048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:45,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1086 Valid, 1282 Invalid, 2048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1990 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 18:04:45,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5006 states. [2023-12-15 18:04:45,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5006 to 3372. [2023-12-15 18:04:45,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3372 states, 2999 states have (on average 1.5805268422807603) internal successors, (4740), 3017 states have internal predecessors, (4740), 254 states have call successors, (254), 103 states have call predecessors, (254), 118 states have return successors, (349), 267 states have call predecessors, (349), 252 states have call successors, (349) [2023-12-15 18:04:45,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3372 states to 3372 states and 5343 transitions. [2023-12-15 18:04:45,367 INFO L78 Accepts]: Start accepts. Automaton has 3372 states and 5343 transitions. Word has length 102 [2023-12-15 18:04:45,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:45,367 INFO L495 AbstractCegarLoop]: Abstraction has 3372 states and 5343 transitions. [2023-12-15 18:04:45,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-15 18:04:45,367 INFO L276 IsEmpty]: Start isEmpty. Operand 3372 states and 5343 transitions. [2023-12-15 18:04:45,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-15 18:04:45,370 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:45,370 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] [2023-12-15 18:04:45,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 18:04:45,371 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:45,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:45,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1196263984, now seen corresponding path program 1 times [2023-12-15 18:04:45,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:45,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682977371] [2023-12-15 18:04:45,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:45,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:45,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:45,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:45,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:45,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 18:04:45,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:45,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-15 18:04:45,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:45,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 18:04:45,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:45,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-15 18:04:45,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:45,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:45,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:45,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682977371] [2023-12-15 18:04:45,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682977371] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:45,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:45,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:04:45,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474781245] [2023-12-15 18:04:45,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:45,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:04:45,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:45,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:04:45,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:45,521 INFO L87 Difference]: Start difference. First operand 3372 states and 5343 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-15 18:04:47,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:47,799 INFO L93 Difference]: Finished difference Result 12783 states and 20490 transitions. [2023-12-15 18:04:47,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 18:04:47,799 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2023-12-15 18:04:47,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:47,880 INFO L225 Difference]: With dead ends: 12783 [2023-12-15 18:04:47,880 INFO L226 Difference]: Without dead ends: 9424 [2023-12-15 18:04:47,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 18:04:47,894 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 887 mSDsluCounter, 978 mSDsCounter, 0 mSdLazyCounter, 2317 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 2374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:47,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [899 Valid, 1278 Invalid, 2374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2317 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-15 18:04:47,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9424 states. [2023-12-15 18:04:48,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9424 to 6353. [2023-12-15 18:04:48,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6353 states, 5652 states have (on average 1.572894550601557) internal successors, (8890), 5686 states have internal predecessors, (8890), 470 states have call successors, (470), 199 states have call predecessors, (470), 230 states have return successors, (743), 499 states have call predecessors, (743), 468 states have call successors, (743) [2023-12-15 18:04:48,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6353 states to 6353 states and 10103 transitions. [2023-12-15 18:04:48,328 INFO L78 Accepts]: Start accepts. Automaton has 6353 states and 10103 transitions. Word has length 102 [2023-12-15 18:04:48,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:48,328 INFO L495 AbstractCegarLoop]: Abstraction has 6353 states and 10103 transitions. [2023-12-15 18:04:48,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-15 18:04:48,329 INFO L276 IsEmpty]: Start isEmpty. Operand 6353 states and 10103 transitions. [2023-12-15 18:04:48,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-15 18:04:48,335 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:48,335 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:48,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 18:04:48,335 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:48,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:48,335 INFO L85 PathProgramCache]: Analyzing trace with hash -956024238, now seen corresponding path program 1 times [2023-12-15 18:04:48,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:48,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351680818] [2023-12-15 18:04:48,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:48,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:48,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:48,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:48,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:48,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 18:04:48,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:48,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-15 18:04:48,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:48,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 18:04:48,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:48,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-15 18:04:48,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:48,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:48,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:48,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351680818] [2023-12-15 18:04:48,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351680818] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:48,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:48,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:04:48,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616238077] [2023-12-15 18:04:48,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:48,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:04:48,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:48,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:04:48,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:48,527 INFO L87 Difference]: Start difference. First operand 6353 states and 10103 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-15 18:04:49,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:49,659 INFO L93 Difference]: Finished difference Result 14521 states and 23449 transitions. [2023-12-15 18:04:49,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:04:49,660 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2023-12-15 18:04:49,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:49,700 INFO L225 Difference]: With dead ends: 14521 [2023-12-15 18:04:49,701 INFO L226 Difference]: Without dead ends: 8181 [2023-12-15 18:04:49,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:04:49,721 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 651 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:49,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [665 Valid, 647 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 955 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 18:04:49,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8181 states. [2023-12-15 18:04:50,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8181 to 6353. [2023-12-15 18:04:50,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6353 states, 5652 states have (on average 1.5670559094125973) internal successors, (8857), 5686 states have internal predecessors, (8857), 470 states have call successors, (470), 199 states have call predecessors, (470), 230 states have return successors, (743), 499 states have call predecessors, (743), 468 states have call successors, (743) [2023-12-15 18:04:50,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6353 states to 6353 states and 10070 transitions. [2023-12-15 18:04:50,273 INFO L78 Accepts]: Start accepts. Automaton has 6353 states and 10070 transitions. Word has length 102 [2023-12-15 18:04:50,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:50,273 INFO L495 AbstractCegarLoop]: Abstraction has 6353 states and 10070 transitions. [2023-12-15 18:04:50,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-15 18:04:50,273 INFO L276 IsEmpty]: Start isEmpty. Operand 6353 states and 10070 transitions. [2023-12-15 18:04:50,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-15 18:04:50,279 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:50,279 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] [2023-12-15 18:04:50,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 18:04:50,280 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:50,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:50,280 INFO L85 PathProgramCache]: Analyzing trace with hash -116990576, now seen corresponding path program 1 times [2023-12-15 18:04:50,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:50,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202483337] [2023-12-15 18:04:50,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:50,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:50,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:50,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:50,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:50,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 18:04:50,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:50,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-15 18:04:50,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:50,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 18:04:50,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:50,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-15 18:04:50,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:50,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:50,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:50,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202483337] [2023-12-15 18:04:50,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202483337] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:50,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:50,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:04:50,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154887536] [2023-12-15 18:04:50,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:50,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:04:50,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:50,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:04:50,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:50,418 INFO L87 Difference]: Start difference. First operand 6353 states and 10070 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-15 18:04:52,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:52,706 INFO L93 Difference]: Finished difference Result 23640 states and 37876 transitions. [2023-12-15 18:04:52,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 18:04:52,707 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2023-12-15 18:04:52,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:52,769 INFO L225 Difference]: With dead ends: 23640 [2023-12-15 18:04:52,769 INFO L226 Difference]: Without dead ends: 17300 [2023-12-15 18:04:52,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 18:04:52,793 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 862 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 2188 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 1282 SdHoareTripleChecker+Invalid, 2245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:52,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 1282 Invalid, 2245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2188 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 18:04:52,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17300 states. [2023-12-15 18:04:53,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17300 to 12507. [2023-12-15 18:04:53,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12507 states, 11166 states have (on average 1.5651979222640158) internal successors, (17477), 11232 states have internal predecessors, (17477), 886 states have call successors, (886), 391 states have call predecessors, (886), 454 states have return successors, (1677), 947 states have call predecessors, (1677), 884 states have call successors, (1677) [2023-12-15 18:04:53,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12507 states to 12507 states and 20040 transitions. [2023-12-15 18:04:53,692 INFO L78 Accepts]: Start accepts. Automaton has 12507 states and 20040 transitions. Word has length 102 [2023-12-15 18:04:53,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:53,693 INFO L495 AbstractCegarLoop]: Abstraction has 12507 states and 20040 transitions. [2023-12-15 18:04:53,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-15 18:04:53,693 INFO L276 IsEmpty]: Start isEmpty. Operand 12507 states and 20040 transitions. [2023-12-15 18:04:53,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-15 18:04:53,703 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:53,703 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] [2023-12-15 18:04:53,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-15 18:04:53,704 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:53,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:53,704 INFO L85 PathProgramCache]: Analyzing trace with hash -89924974, now seen corresponding path program 1 times [2023-12-15 18:04:53,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:53,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745829125] [2023-12-15 18:04:53,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:53,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:53,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:53,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:53,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:53,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 18:04:53,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:53,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-15 18:04:53,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:53,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 18:04:53,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:53,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-15 18:04:53,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:53,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:53,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:53,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745829125] [2023-12-15 18:04:53,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745829125] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:53,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:53,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:04:53,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718820600] [2023-12-15 18:04:53,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:53,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:04:53,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:53,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:04:53,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:53,855 INFO L87 Difference]: Start difference. First operand 12507 states and 20040 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-15 18:04:56,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:56,650 INFO L93 Difference]: Finished difference Result 45776 states and 74148 transitions. [2023-12-15 18:04:56,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 18:04:56,650 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2023-12-15 18:04:56,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:56,775 INFO L225 Difference]: With dead ends: 45776 [2023-12-15 18:04:56,775 INFO L226 Difference]: Without dead ends: 33282 [2023-12-15 18:04:56,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 18:04:56,813 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 922 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 1921 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 1282 SdHoareTripleChecker+Invalid, 1979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:56,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [942 Valid, 1282 Invalid, 1979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1921 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 18:04:56,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33282 states. [2023-12-15 18:04:58,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33282 to 24812. [2023-12-15 18:04:58,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24812 states, 22223 states have (on average 1.5648202312919048) internal successors, (34775), 22353 states have internal predecessors, (34775), 1686 states have call successors, (1686), 775 states have call predecessors, (1686), 902 states have return successors, (3999), 1811 states have call predecessors, (3999), 1684 states have call successors, (3999) [2023-12-15 18:04:58,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24812 states to 24812 states and 40460 transitions. [2023-12-15 18:04:58,659 INFO L78 Accepts]: Start accepts. Automaton has 24812 states and 40460 transitions. Word has length 102 [2023-12-15 18:04:58,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:58,659 INFO L495 AbstractCegarLoop]: Abstraction has 24812 states and 40460 transitions. [2023-12-15 18:04:58,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-15 18:04:58,659 INFO L276 IsEmpty]: Start isEmpty. Operand 24812 states and 40460 transitions. [2023-12-15 18:04:58,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-15 18:04:58,679 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:58,679 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] [2023-12-15 18:04:58,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-15 18:04:58,680 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:58,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:58,680 INFO L85 PathProgramCache]: Analyzing trace with hash 2127705424, now seen corresponding path program 1 times [2023-12-15 18:04:58,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:58,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498787953] [2023-12-15 18:04:58,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:58,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:58,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:58,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:58,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:58,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 18:04:58,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:58,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-15 18:04:58,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:58,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 18:04:58,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:58,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-15 18:04:58,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:58,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:58,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:58,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498787953] [2023-12-15 18:04:58,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498787953] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:58,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:58,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:04:58,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547104533] [2023-12-15 18:04:58,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:58,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:04:58,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:58,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:04:58,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:58,944 INFO L87 Difference]: Start difference. First operand 24812 states and 40460 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-15 18:05:02,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:02,860 INFO L93 Difference]: Finished difference Result 87421 states and 144406 transitions. [2023-12-15 18:05:02,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 18:05:02,862 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2023-12-15 18:05:02,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:03,154 INFO L225 Difference]: With dead ends: 87421 [2023-12-15 18:05:03,154 INFO L226 Difference]: Without dead ends: 62622 [2023-12-15 18:05:03,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 18:05:03,235 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 832 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 2003 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 1282 SdHoareTripleChecker+Invalid, 2061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 2003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:03,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 1282 Invalid, 2061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 2003 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 18:05:03,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62622 states. [2023-12-15 18:05:06,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62622 to 49550. [2023-12-15 18:05:06,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49550 states, 44529 states have (on average 1.5665072200139236) internal successors, (69755), 44787 states have internal predecessors, (69755), 3222 states have call successors, (3222), 1543 states have call predecessors, (3222), 1798 states have return successors, (10037), 3475 states have call predecessors, (10037), 3220 states have call successors, (10037) [2023-12-15 18:05:06,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49550 states to 49550 states and 83014 transitions. [2023-12-15 18:05:06,716 INFO L78 Accepts]: Start accepts. Automaton has 49550 states and 83014 transitions. Word has length 102 [2023-12-15 18:05:06,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:06,716 INFO L495 AbstractCegarLoop]: Abstraction has 49550 states and 83014 transitions. [2023-12-15 18:05:06,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-12-15 18:05:06,717 INFO L276 IsEmpty]: Start isEmpty. Operand 49550 states and 83014 transitions. [2023-12-15 18:05:06,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-15 18:05:06,753 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:06,753 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] [2023-12-15 18:05:06,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-15 18:05:06,753 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:06,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:06,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1280039026, now seen corresponding path program 1 times [2023-12-15 18:05:06,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:06,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553364454] [2023-12-15 18:05:06,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:06,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:06,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:06,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:05:06,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:06,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 18:05:06,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:06,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-15 18:05:06,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:06,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 18:05:06,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:06,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-15 18:05:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:06,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:05:06,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:06,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553364454] [2023-12-15 18:05:06,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553364454] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:06,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:05:06,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 18:05:06,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744330834] [2023-12-15 18:05:06,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:06,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:05:06,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:06,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:05:06,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:05:06,867 INFO L87 Difference]: Start difference. First operand 49550 states and 83014 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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) [2023-12-15 18:05:11,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:11,950 INFO L93 Difference]: Finished difference Result 140368 states and 233419 transitions. [2023-12-15 18:05:11,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 18:05:11,950 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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 102 [2023-12-15 18:05:11,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:12,272 INFO L225 Difference]: With dead ends: 140368 [2023-12-15 18:05:12,272 INFO L226 Difference]: Without dead ends: 90832 [2023-12-15 18:05:12,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-15 18:05:12,389 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 1084 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 1682 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1117 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 1769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:12,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1117 Valid, 948 Invalid, 1769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1682 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 18:05:12,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90832 states. Received shutdown request... [2023-12-15 18:05:12,988 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location error2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-15 18:05:12,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-15 18:05:12,989 WARN L619 AbstractCegarLoop]: Verification canceled: while executing MinimizeSevpa. [2023-12-15 18:05:12,990 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-15 18:05:12,993 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:05:12,994 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 18:05:12,996 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 06:05:12 BoogieIcfgContainer [2023-12-15 18:05:12,996 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 18:05:12,997 INFO L158 Benchmark]: Toolchain (without parser) took 49960.87ms. Allocated memory was 182.5MB in the beginning and 6.1GB in the end (delta: 6.0GB). Free memory was 138.4MB in the beginning and 5.3GB in the end (delta: -5.2GB). Peak memory consumption was 1.0GB. Max. memory is 8.0GB. [2023-12-15 18:05:12,997 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 182.5MB. Free memory is still 134.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 18:05:12,997 INFO L158 Benchmark]: CACSL2BoogieTranslator took 433.12ms. Allocated memory is still 182.5MB. Free memory was 138.1MB in the beginning and 116.8MB in the end (delta: 21.3MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-12-15 18:05:12,997 INFO L158 Benchmark]: Boogie Procedure Inliner took 90.31ms. Allocated memory is still 182.5MB. Free memory was 116.8MB in the beginning and 112.9MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-15 18:05:12,997 INFO L158 Benchmark]: Boogie Preprocessor took 97.61ms. Allocated memory is still 182.5MB. Free memory was 112.9MB in the beginning and 108.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-15 18:05:12,998 INFO L158 Benchmark]: RCFGBuilder took 968.73ms. Allocated memory was 182.5MB in the beginning and 268.4MB in the end (delta: 86.0MB). Free memory was 108.7MB in the beginning and 209.5MB in the end (delta: -100.8MB). Peak memory consumption was 26.8MB. Max. memory is 8.0GB. [2023-12-15 18:05:12,998 INFO L158 Benchmark]: TraceAbstraction took 48365.27ms. Allocated memory was 268.4MB in the beginning and 6.1GB in the end (delta: 5.9GB). Free memory was 209.0MB in the beginning and 5.3GB in the end (delta: -5.1GB). Peak memory consumption was 993.0MB. Max. memory is 8.0GB. [2023-12-15 18:05:12,999 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 182.5MB. Free memory is still 134.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 433.12ms. Allocated memory is still 182.5MB. Free memory was 138.1MB in the beginning and 116.8MB in the end (delta: 21.3MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 90.31ms. Allocated memory is still 182.5MB. Free memory was 116.8MB in the beginning and 112.9MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 97.61ms. Allocated memory is still 182.5MB. Free memory was 112.9MB in the beginning and 108.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 968.73ms. Allocated memory was 182.5MB in the beginning and 268.4MB in the end (delta: 86.0MB). Free memory was 108.7MB in the beginning and 209.5MB in the end (delta: -100.8MB). Peak memory consumption was 26.8MB. Max. memory is 8.0GB. * TraceAbstraction took 48365.27ms. Allocated memory was 268.4MB in the beginning and 6.1GB in the end (delta: 5.9GB). Free memory was 209.0MB in the beginning and 5.3GB in the end (delta: -5.1GB). Peak memory consumption was 993.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 390]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 390). Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 27]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 27). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 281 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 48.3s, OverallIterations: 23, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 34.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16275 SdHoareTripleChecker+Valid, 19.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15942 mSDsluCounter, 20720 SdHoareTripleChecker+Invalid, 16.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14357 mSDsCounter, 1250 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 26562 IncrementalHoareTripleChecker+Invalid, 27812 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1250 mSolverCounterUnsat, 6363 mSDtfsCounter, 26562 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 820 GetRequests, 596 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49550occurred in iteration=22, InterpolantAutomatonStates: 229, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 9.0s AutomataMinimizationTime, 23 MinimizatonAttempts, 35816 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 2159 NumberOfCodeBlocks, 2159 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 2252 ConstructedInterpolants, 0 QuantifiedInterpolants, 5688 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1024 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 28 InterpolantComputations, 22 PerfectInterpolantSequences, 194/258 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown