/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.14.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 01:32:59,488 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 01:32:59,562 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 01:32:59,567 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 01:32:59,567 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 01:32:59,593 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 01:32:59,594 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 01:32:59,594 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 01:32:59,595 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 01:32:59,599 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 01:32:59,599 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 01:32:59,599 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 01:32:59,600 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 01:32:59,602 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 01:32:59,602 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 01:32:59,602 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 01:32:59,602 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 01:32:59,602 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 01:32:59,602 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 01:32:59,603 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 01:32:59,603 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 01:32:59,603 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 01:32:59,603 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 01:32:59,603 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 01:32:59,604 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 01:32:59,604 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 01:32:59,604 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 01:32:59,604 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 01:32:59,605 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 01:32:59,605 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 01:32:59,606 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 01:32:59,606 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 01:32:59,606 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:32:59,606 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 01:32:59,606 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 01:32:59,607 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 01:32:59,607 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 01:32:59,607 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 01:32:59,607 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 01:32:59,607 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 01:32:59,607 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 01:32:59,608 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 01:32:59,608 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 01:32:59,609 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 01:32:59,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 01:32:59,858 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 01:32:59,860 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 01:32:59,861 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 01:32:59,862 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 01:32:59,862 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.14.cil.c [2023-12-19 01:33:01,061 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 01:33:01,284 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 01:33:01,285 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.14.cil.c [2023-12-19 01:33:01,299 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a2eb05b6/5fe52e93e8604d30aabe93c5883fa9aa/FLAGf931bc9b5 [2023-12-19 01:33:01,313 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a2eb05b6/5fe52e93e8604d30aabe93c5883fa9aa [2023-12-19 01:33:01,315 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 01:33:01,316 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 01:33:01,318 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 01:33:01,318 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 01:33:01,321 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 01:33:01,322 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:33:01" (1/1) ... [2023-12-19 01:33:01,323 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22856b33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:33:01, skipping insertion in model container [2023-12-19 01:33:01,323 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:33:01" (1/1) ... [2023-12-19 01:33:01,379 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 01:33:01,508 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.14.cil.c[913,926] [2023-12-19 01:33:01,557 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.14.cil.c[5977,5990] [2023-12-19 01:33:01,759 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:33:01,777 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 01:33:01,792 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.14.cil.c[913,926] [2023-12-19 01:33:01,811 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.14.cil.c[5977,5990] [2023-12-19 01:33:01,920 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:33:01,958 INFO L206 MainTranslator]: Completed translation [2023-12-19 01:33:01,959 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:33:01 WrapperNode [2023-12-19 01:33:01,959 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 01:33:01,960 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 01:33:01,960 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 01:33:01,960 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 01:33:01,991 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:33:01" (1/1) ... [2023-12-19 01:33:02,022 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:33:01" (1/1) ... [2023-12-19 01:33:02,122 INFO L138 Inliner]: procedures = 72, calls = 85, calls flagged for inlining = 46, calls inlined = 46, statements flattened = 1087 [2023-12-19 01:33:02,122 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 01:33:02,123 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 01:33:02,123 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 01:33:02,123 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 01:33:02,146 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:33:01" (1/1) ... [2023-12-19 01:33:02,146 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:33:01" (1/1) ... [2023-12-19 01:33:02,155 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:33:01" (1/1) ... [2023-12-19 01:33:02,220 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 01:33:02,221 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:33:01" (1/1) ... [2023-12-19 01:33:02,221 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:33:01" (1/1) ... [2023-12-19 01:33:02,253 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:33:01" (1/1) ... [2023-12-19 01:33:02,302 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:33:01" (1/1) ... [2023-12-19 01:33:02,305 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:33:01" (1/1) ... [2023-12-19 01:33:02,308 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:33:01" (1/1) ... [2023-12-19 01:33:02,333 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 01:33:02,334 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 01:33:02,334 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 01:33:02,334 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 01:33:02,334 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:33:01" (1/1) ... [2023-12-19 01:33:02,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:33:02,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:33:02,374 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 01:33:02,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 01:33:02,400 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-19 01:33:02,400 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-19 01:33:02,400 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2023-12-19 01:33:02,402 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2023-12-19 01:33:02,402 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-19 01:33:02,403 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-19 01:33:02,403 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-19 01:33:02,403 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-19 01:33:02,403 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-19 01:33:02,403 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-19 01:33:02,403 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-19 01:33:02,403 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-19 01:33:02,403 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-19 01:33:02,403 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-19 01:33:02,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 01:33:02,403 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-19 01:33:02,403 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-19 01:33:02,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 01:33:02,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 01:33:02,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 01:33:02,405 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-19 01:33:02,405 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-19 01:33:02,405 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2023-12-19 01:33:02,405 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2023-12-19 01:33:02,542 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 01:33:02,546 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 01:33:03,344 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 01:33:03,405 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 01:33:03,405 INFO L309 CfgBuilder]: Removed 19 assume(true) statements. [2023-12-19 01:33:03,406 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:33:03 BoogieIcfgContainer [2023-12-19 01:33:03,406 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 01:33:03,408 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 01:33:03,409 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 01:33:03,411 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 01:33:03,411 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 01:33:01" (1/3) ... [2023-12-19 01:33:03,412 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6904b29a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:33:03, skipping insertion in model container [2023-12-19 01:33:03,412 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:33:01" (2/3) ... [2023-12-19 01:33:03,412 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6904b29a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:33:03, skipping insertion in model container [2023-12-19 01:33:03,412 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:33:03" (3/3) ... [2023-12-19 01:33:03,413 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.14.cil.c [2023-12-19 01:33:03,426 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 01:33:03,426 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-19 01:33:03,486 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 01:33:03,491 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;@1fd7fc5f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 01:33:03,491 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-19 01:33:03,499 INFO L276 IsEmpty]: Start isEmpty. Operand has 417 states, 370 states have (on average 1.727027027027027) internal successors, (639), 377 states have internal predecessors, (639), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-19 01:33:03,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-19 01:33:03,508 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:03,509 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:03,510 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:03,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:03,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1876931387, now seen corresponding path program 1 times [2023-12-19 01:33:03,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:03,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584726064] [2023-12-19 01:33:03,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:03,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:03,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:03,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:33:03,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:03,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:33:03,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:03,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:03,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:03,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584726064] [2023-12-19 01:33:03,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584726064] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:03,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:03,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:33:03,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186787630] [2023-12-19 01:33:03,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:03,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:33:03,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:03,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:33:03,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:33:03,939 INFO L87 Difference]: Start difference. First operand has 417 states, 370 states have (on average 1.727027027027027) internal successors, (639), 377 states have internal predecessors, (639), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 01:33:04,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:04,746 INFO L93 Difference]: Finished difference Result 874 states and 1478 transitions. [2023-12-19 01:33:04,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 01:33:04,749 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2023-12-19 01:33:04,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:04,769 INFO L225 Difference]: With dead ends: 874 [2023-12-19 01:33:04,769 INFO L226 Difference]: Without dead ends: 474 [2023-12-19 01:33:04,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:33:04,781 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 895 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:04,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [921 Valid, 708 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 01:33:04,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2023-12-19 01:33:04,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 468. [2023-12-19 01:33:04,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 417 states have (on average 1.592326139088729) internal successors, (664), 422 states have internal predecessors, (664), 38 states have call successors, (38), 12 states have call predecessors, (38), 11 states have return successors, (40), 34 states have call predecessors, (40), 34 states have call successors, (40) [2023-12-19 01:33:04,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 742 transitions. [2023-12-19 01:33:04,888 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 742 transitions. Word has length 37 [2023-12-19 01:33:04,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:04,889 INFO L495 AbstractCegarLoop]: Abstraction has 468 states and 742 transitions. [2023-12-19 01:33:04,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 01:33:04,889 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 742 transitions. [2023-12-19 01:33:04,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-19 01:33:04,892 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:04,894 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:04,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 01:33:04,895 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:04,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:04,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1901609684, now seen corresponding path program 1 times [2023-12-19 01:33:04,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:04,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120385130] [2023-12-19 01:33:04,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:04,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:04,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:33:04,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:05,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:33:05,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:05,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:05,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:05,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120385130] [2023-12-19 01:33:05,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120385130] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:05,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:05,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:33:05,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054852188] [2023-12-19 01:33:05,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:05,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:33:05,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:05,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:33:05,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:33:05,028 INFO L87 Difference]: Start difference. First operand 468 states and 742 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 01:33:05,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:05,432 INFO L93 Difference]: Finished difference Result 702 states and 1086 transitions. [2023-12-19 01:33:05,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 01:33:05,433 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2023-12-19 01:33:05,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:05,436 INFO L225 Difference]: With dead ends: 702 [2023-12-19 01:33:05,437 INFO L226 Difference]: Without dead ends: 591 [2023-12-19 01:33:05,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:33:05,438 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 908 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:05,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 709 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 01:33:05,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2023-12-19 01:33:05,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 568. [2023-12-19 01:33:05,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 504 states have (on average 1.5515873015873016) internal successors, (782), 510 states have internal predecessors, (782), 46 states have call successors, (46), 16 states have call predecessors, (46), 16 states have return successors, (54), 42 states have call predecessors, (54), 42 states have call successors, (54) [2023-12-19 01:33:05,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 882 transitions. [2023-12-19 01:33:05,468 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 882 transitions. Word has length 38 [2023-12-19 01:33:05,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:05,468 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 882 transitions. [2023-12-19 01:33:05,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 01:33:05,468 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 882 transitions. [2023-12-19 01:33:05,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-19 01:33:05,475 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:05,475 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:05,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 01:33:05,476 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:05,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:05,477 INFO L85 PathProgramCache]: Analyzing trace with hash 518462469, now seen corresponding path program 1 times [2023-12-19 01:33:05,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:05,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147795334] [2023-12-19 01:33:05,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:05,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:05,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:05,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:33:05,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:05,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-19 01:33:05,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:05,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:05,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:05,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147795334] [2023-12-19 01:33:05,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147795334] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:05,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:05,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:33:05,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055607025] [2023-12-19 01:33:05,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:05,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:33:05,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:05,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:33:05,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:33:05,522 INFO L87 Difference]: Start difference. First operand 568 states and 882 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 01:33:06,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:06,072 INFO L93 Difference]: Finished difference Result 988 states and 1463 transitions. [2023-12-19 01:33:06,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 01:33:06,072 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2023-12-19 01:33:06,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:06,076 INFO L225 Difference]: With dead ends: 988 [2023-12-19 01:33:06,076 INFO L226 Difference]: Without dead ends: 777 [2023-12-19 01:33:06,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:33:06,078 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 347 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 1006 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:06,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 1006 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 01:33:06,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2023-12-19 01:33:06,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 673. [2023-12-19 01:33:06,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 597 states have (on average 1.5259631490787269) internal successors, (911), 605 states have internal predecessors, (911), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (60), 46 states have call predecessors, (60), 48 states have call successors, (60) [2023-12-19 01:33:06,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 1023 transitions. [2023-12-19 01:33:06,147 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 1023 transitions. Word has length 39 [2023-12-19 01:33:06,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:06,147 INFO L495 AbstractCegarLoop]: Abstraction has 673 states and 1023 transitions. [2023-12-19 01:33:06,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 01:33:06,147 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 1023 transitions. [2023-12-19 01:33:06,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-19 01:33:06,148 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:06,149 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:06,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 01:33:06,149 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:06,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:06,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1901754450, now seen corresponding path program 1 times [2023-12-19 01:33:06,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:06,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463602102] [2023-12-19 01:33:06,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:06,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:06,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:06,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:33:06,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:06,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 01:33:06,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:06,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 01:33:06,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:06,226 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 01:33:06,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:06,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463602102] [2023-12-19 01:33:06,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463602102] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:06,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:06,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:33:06,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221074828] [2023-12-19 01:33:06,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:06,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:33:06,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:06,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:33:06,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:33:06,228 INFO L87 Difference]: Start difference. First operand 673 states and 1023 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-19 01:33:06,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:06,715 INFO L93 Difference]: Finished difference Result 1189 states and 1740 transitions. [2023-12-19 01:33:06,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 01:33:06,716 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 54 [2023-12-19 01:33:06,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:06,720 INFO L225 Difference]: With dead ends: 1189 [2023-12-19 01:33:06,720 INFO L226 Difference]: Without dead ends: 873 [2023-12-19 01:33:06,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:33:06,721 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 332 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:06,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 1053 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 01:33:06,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2023-12-19 01:33:06,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 839. [2023-12-19 01:33:06,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 739 states have (on average 1.4709066305818674) internal successors, (1087), 749 states have internal predecessors, (1087), 66 states have call successors, (66), 30 states have call predecessors, (66), 32 states have return successors, (84), 60 states have call predecessors, (84), 62 states have call successors, (84) [2023-12-19 01:33:06,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1237 transitions. [2023-12-19 01:33:06,750 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1237 transitions. Word has length 54 [2023-12-19 01:33:06,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:06,751 INFO L495 AbstractCegarLoop]: Abstraction has 839 states and 1237 transitions. [2023-12-19 01:33:06,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-19 01:33:06,751 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1237 transitions. [2023-12-19 01:33:06,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-19 01:33:06,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:06,753 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:06,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 01:33:06,753 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:06,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:06,753 INFO L85 PathProgramCache]: Analyzing trace with hash 2087286059, now seen corresponding path program 1 times [2023-12-19 01:33:06,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:06,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883842359] [2023-12-19 01:33:06,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:06,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:06,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:06,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:33:06,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:06,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-19 01:33:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:06,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:33:06,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:06,796 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-19 01:33:06,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:06,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883842359] [2023-12-19 01:33:06,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883842359] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:06,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:06,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:33:06,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340799085] [2023-12-19 01:33:06,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:06,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:33:06,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:06,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:33:06,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:33:06,797 INFO L87 Difference]: Start difference. First operand 839 states and 1237 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-19 01:33:07,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:07,238 INFO L93 Difference]: Finished difference Result 1418 states and 2016 transitions. [2023-12-19 01:33:07,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 01:33:07,239 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 59 [2023-12-19 01:33:07,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:07,242 INFO L225 Difference]: With dead ends: 1418 [2023-12-19 01:33:07,242 INFO L226 Difference]: Without dead ends: 1016 [2023-12-19 01:33:07,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:33:07,244 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 894 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:07,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 721 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 01:33:07,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2023-12-19 01:33:07,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 967. [2023-12-19 01:33:07,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 851 states have (on average 1.435957696827262) internal successors, (1222), 863 states have internal predecessors, (1222), 74 states have call successors, (74), 36 states have call predecessors, (74), 40 states have return successors, (98), 68 states have call predecessors, (98), 70 states have call successors, (98) [2023-12-19 01:33:07,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1394 transitions. [2023-12-19 01:33:07,282 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1394 transitions. Word has length 59 [2023-12-19 01:33:07,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:07,283 INFO L495 AbstractCegarLoop]: Abstraction has 967 states and 1394 transitions. [2023-12-19 01:33:07,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-19 01:33:07,283 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1394 transitions. [2023-12-19 01:33:07,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-19 01:33:07,284 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:07,285 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:07,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 01:33:07,285 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:07,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:07,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1232195774, now seen corresponding path program 1 times [2023-12-19 01:33:07,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:07,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824286268] [2023-12-19 01:33:07,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:07,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:07,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:33:07,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:07,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:33:07,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:07,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:33:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:07,357 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-19 01:33:07,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:07,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824286268] [2023-12-19 01:33:07,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824286268] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:07,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:07,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 01:33:07,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228177112] [2023-12-19 01:33:07,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:07,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 01:33:07,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:07,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 01:33:07,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:33:07,359 INFO L87 Difference]: Start difference. First operand 967 states and 1394 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-19 01:33:07,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:07,910 INFO L93 Difference]: Finished difference Result 1453 states and 2056 transitions. [2023-12-19 01:33:07,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:33:07,910 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 60 [2023-12-19 01:33:07,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:07,914 INFO L225 Difference]: With dead ends: 1453 [2023-12-19 01:33:07,914 INFO L226 Difference]: Without dead ends: 915 [2023-12-19 01:33:07,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:33:07,916 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 284 mSDsluCounter, 946 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 1313 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:07,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 1313 Invalid, 1081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 01:33:07,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2023-12-19 01:33:07,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 842. [2023-12-19 01:33:07,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 743 states have (on average 1.4468371467025571) internal successors, (1075), 754 states have internal predecessors, (1075), 64 states have call successors, (64), 30 states have call predecessors, (64), 33 states have return successors, (80), 58 states have call predecessors, (80), 60 states have call successors, (80) [2023-12-19 01:33:07,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1219 transitions. [2023-12-19 01:33:07,946 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1219 transitions. Word has length 60 [2023-12-19 01:33:07,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:07,946 INFO L495 AbstractCegarLoop]: Abstraction has 842 states and 1219 transitions. [2023-12-19 01:33:07,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-19 01:33:07,946 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1219 transitions. [2023-12-19 01:33:07,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-19 01:33:07,947 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:07,947 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:07,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 01:33:07,947 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:07,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:07,948 INFO L85 PathProgramCache]: Analyzing trace with hash 565443842, now seen corresponding path program 1 times [2023-12-19 01:33:07,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:07,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531323923] [2023-12-19 01:33:07,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:07,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:07,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:07,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:33:07,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:07,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:33:07,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:08,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:33:08,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:08,012 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 01:33:08,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:08,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531323923] [2023-12-19 01:33:08,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531323923] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:33:08,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009147016] [2023-12-19 01:33:08,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:08,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:33:08,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:33:08,029 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:33:08,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 01:33:08,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:08,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 01:33:08,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:33:08,340 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:08,340 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:33:08,405 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-19 01:33:08,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009147016] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 01:33:08,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-19 01:33:08,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 7 [2023-12-19 01:33:08,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293674209] [2023-12-19 01:33:08,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:08,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:33:08,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:08,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:33:08,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:33:08,407 INFO L87 Difference]: Start difference. First operand 842 states and 1219 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-19 01:33:08,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:08,664 INFO L93 Difference]: Finished difference Result 891 states and 1280 transitions. [2023-12-19 01:33:08,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 01:33:08,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 60 [2023-12-19 01:33:08,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:08,670 INFO L225 Difference]: With dead ends: 891 [2023-12-19 01:33:08,670 INFO L226 Difference]: Without dead ends: 888 [2023-12-19 01:33:08,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:33:08,671 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 1192 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1192 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:08,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1192 Valid, 679 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 01:33:08,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2023-12-19 01:33:08,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 841. [2023-12-19 01:33:08,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 743 states have (on average 1.4441453566621802) internal successors, (1073), 753 states have internal predecessors, (1073), 63 states have call successors, (63), 30 states have call predecessors, (63), 33 states have return successors, (80), 58 states have call predecessors, (80), 60 states have call successors, (80) [2023-12-19 01:33:08,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1216 transitions. [2023-12-19 01:33:08,706 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1216 transitions. Word has length 60 [2023-12-19 01:33:08,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:08,706 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 1216 transitions. [2023-12-19 01:33:08,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-19 01:33:08,706 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1216 transitions. [2023-12-19 01:33:08,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-19 01:33:08,707 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:08,707 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:08,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 01:33:08,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:33:08,914 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:08,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:08,914 INFO L85 PathProgramCache]: Analyzing trace with hash 347468046, now seen corresponding path program 1 times [2023-12-19 01:33:08,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:08,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838154368] [2023-12-19 01:33:08,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:08,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:08,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:09,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:33:09,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:09,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:33:09,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:09,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:33:09,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:09,082 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 01:33:09,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:09,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838154368] [2023-12-19 01:33:09,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838154368] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:33:09,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686354982] [2023-12-19 01:33:09,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:09,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:33:09,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:33:09,101 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:33:09,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 01:33:09,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:09,274 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 01:33:09,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:33:09,578 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:09,578 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:33:09,647 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-19 01:33:09,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686354982] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:33:09,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:33:09,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2023-12-19 01:33:09,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081906370] [2023-12-19 01:33:09,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:33:09,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 01:33:09,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:09,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 01:33:09,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-19 01:33:09,650 INFO L87 Difference]: Start difference. First operand 841 states and 1216 transitions. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 9 states have internal predecessors, (134), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-12-19 01:33:11,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:11,406 INFO L93 Difference]: Finished difference Result 2077 states and 2868 transitions. [2023-12-19 01:33:11,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-19 01:33:11,407 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 9 states have internal predecessors, (134), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 61 [2023-12-19 01:33:11,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:11,412 INFO L225 Difference]: With dead ends: 2077 [2023-12-19 01:33:11,412 INFO L226 Difference]: Without dead ends: 1679 [2023-12-19 01:33:11,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=664, Unknown=0, NotChecked=0, Total=812 [2023-12-19 01:33:11,421 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 1082 mSDsluCounter, 2360 mSDsCounter, 0 mSdLazyCounter, 2391 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1115 SdHoareTripleChecker+Valid, 2793 SdHoareTripleChecker+Invalid, 2435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 2391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:11,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1115 Valid, 2793 Invalid, 2435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 2391 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 01:33:11,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1679 states. [2023-12-19 01:33:11,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1679 to 1170. [2023-12-19 01:33:11,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1170 states, 1035 states have (on average 1.3980676328502415) internal successors, (1447), 1052 states have internal predecessors, (1447), 82 states have call successors, (82), 43 states have call predecessors, (82), 51 states have return successors, (111), 75 states have call predecessors, (111), 79 states have call successors, (111) [2023-12-19 01:33:11,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 1640 transitions. [2023-12-19 01:33:11,509 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 1640 transitions. Word has length 61 [2023-12-19 01:33:11,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:11,509 INFO L495 AbstractCegarLoop]: Abstraction has 1170 states and 1640 transitions. [2023-12-19 01:33:11,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 9 states have internal predecessors, (134), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-12-19 01:33:11,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 1640 transitions. [2023-12-19 01:33:11,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 01:33:11,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:11,520 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:11,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 01:33:11,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-19 01:33:11,727 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:11,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:11,727 INFO L85 PathProgramCache]: Analyzing trace with hash -618589152, now seen corresponding path program 1 times [2023-12-19 01:33:11,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:11,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457294014] [2023-12-19 01:33:11,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:11,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:11,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:11,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:33:11,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:11,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:33:11,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:11,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 01:33:11,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:11,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 01:33:11,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:11,824 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-19 01:33:11,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:11,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457294014] [2023-12-19 01:33:11,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457294014] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:11,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:11,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:33:11,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190847044] [2023-12-19 01:33:11,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:11,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:33:11,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:11,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:33:11,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:33:11,825 INFO L87 Difference]: Start difference. First operand 1170 states and 1640 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-19 01:33:12,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:12,435 INFO L93 Difference]: Finished difference Result 1804 states and 2463 transitions. [2023-12-19 01:33:12,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 01:33:12,435 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 78 [2023-12-19 01:33:12,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:12,440 INFO L225 Difference]: With dead ends: 1804 [2023-12-19 01:33:12,440 INFO L226 Difference]: Without dead ends: 1139 [2023-12-19 01:33:12,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:33:12,456 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 907 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:12,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 737 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 01:33:12,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2023-12-19 01:33:12,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1062. [2023-12-19 01:33:12,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1062 states, 940 states have (on average 1.4031914893617021) internal successors, (1319), 957 states have internal predecessors, (1319), 75 states have call successors, (75), 38 states have call predecessors, (75), 45 states have return successors, (100), 67 states have call predecessors, (100), 72 states have call successors, (100) [2023-12-19 01:33:12,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1494 transitions. [2023-12-19 01:33:12,554 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1494 transitions. Word has length 78 [2023-12-19 01:33:12,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:12,554 INFO L495 AbstractCegarLoop]: Abstraction has 1062 states and 1494 transitions. [2023-12-19 01:33:12,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-19 01:33:12,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1494 transitions. [2023-12-19 01:33:12,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-19 01:33:12,559 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:12,559 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:12,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 01:33:12,560 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:12,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:12,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1502163055, now seen corresponding path program 1 times [2023-12-19 01:33:12,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:12,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384106995] [2023-12-19 01:33:12,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:12,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:12,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:12,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:33:12,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:12,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:33:12,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:12,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-19 01:33:12,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:12,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 01:33:12,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:12,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 01:33:12,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:12,739 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-19 01:33:12,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:12,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384106995] [2023-12-19 01:33:12,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384106995] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:33:12,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020221553] [2023-12-19 01:33:12,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:12,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:33:12,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:33:12,753 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:33:12,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 01:33:12,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:12,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 01:33:12,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:33:12,939 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 01:33:12,939 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:33:12,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020221553] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:12,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:33:12,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-19 01:33:12,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601363167] [2023-12-19 01:33:12,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:12,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:33:12,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:12,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:33:12,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:33:12,941 INFO L87 Difference]: Start difference. First operand 1062 states and 1494 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-19 01:33:13,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:13,026 INFO L93 Difference]: Finished difference Result 1347 states and 1852 transitions. [2023-12-19 01:33:13,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:33:13,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 92 [2023-12-19 01:33:13,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:13,027 INFO L225 Difference]: With dead ends: 1347 [2023-12-19 01:33:13,027 INFO L226 Difference]: Without dead ends: 352 [2023-12-19 01:33:13,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:33:13,029 INFO L413 NwaCegarLoop]: 640 mSDtfsCounter, 55 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 1224 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:13,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 1224 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:33:13,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2023-12-19 01:33:13,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2023-12-19 01:33:13,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 317 states have (on average 1.637223974763407) internal successors, (519), 319 states have internal predecessors, (519), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-19 01:33:13,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 573 transitions. [2023-12-19 01:33:13,041 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 573 transitions. Word has length 92 [2023-12-19 01:33:13,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:13,041 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 573 transitions. [2023-12-19 01:33:13,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-19 01:33:13,041 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 573 transitions. [2023-12-19 01:33:13,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:33:13,042 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:13,042 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:13,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 01:33:13,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:33:13,248 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:13,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:13,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1764087834, now seen corresponding path program 1 times [2023-12-19 01:33:13,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:13,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209703230] [2023-12-19 01:33:13,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:13,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:13,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:13,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:33:13,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:13,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:33:13,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:13,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:33:13,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:13,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:33:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:13,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:33:13,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:13,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:13,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:13,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209703230] [2023-12-19 01:33:13,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209703230] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:13,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:13,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 01:33:13,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582302757] [2023-12-19 01:33:13,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:13,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 01:33:13,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:13,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 01:33:13,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:33:13,409 INFO L87 Difference]: Start difference. First operand 352 states and 573 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:15,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:15,542 INFO L93 Difference]: Finished difference Result 829 states and 1372 transitions. [2023-12-19 01:33:15,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 01:33:15,542 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-19 01:33:15,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:15,544 INFO L225 Difference]: With dead ends: 829 [2023-12-19 01:33:15,544 INFO L226 Difference]: Without dead ends: 482 [2023-12-19 01:33:15,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:33:15,545 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 987 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:15,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1011 Valid, 639 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-19 01:33:15,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2023-12-19 01:33:15,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 352. [2023-12-19 01:33:15,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 317 states have (on average 1.6340694006309149) internal successors, (518), 319 states have internal predecessors, (518), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-19 01:33:15,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 572 transitions. [2023-12-19 01:33:15,559 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 572 transitions. Word has length 162 [2023-12-19 01:33:15,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:15,560 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 572 transitions. [2023-12-19 01:33:15,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:15,576 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 572 transitions. [2023-12-19 01:33:15,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:33:15,577 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:15,577 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:15,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 01:33:15,578 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:15,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:15,578 INFO L85 PathProgramCache]: Analyzing trace with hash 783133020, now seen corresponding path program 1 times [2023-12-19 01:33:15,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:15,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826568005] [2023-12-19 01:33:15,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:15,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:15,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:15,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:33:15,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:15,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:33:15,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:15,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:33:15,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:15,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:33:15,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:15,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:33:15,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:15,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:15,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:15,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826568005] [2023-12-19 01:33:15,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826568005] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:15,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:15,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:33:15,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748994275] [2023-12-19 01:33:15,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:15,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:33:15,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:15,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:33:15,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:33:15,889 INFO L87 Difference]: Start difference. First operand 352 states and 572 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:18,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:18,561 INFO L93 Difference]: Finished difference Result 851 states and 1419 transitions. [2023-12-19 01:33:18,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 01:33:18,561 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-19 01:33:18,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:18,564 INFO L225 Difference]: With dead ends: 851 [2023-12-19 01:33:18,564 INFO L226 Difference]: Without dead ends: 512 [2023-12-19 01:33:18,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-12-19 01:33:18,566 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 1096 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 2111 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 2174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:18,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1123 Valid, 1153 Invalid, 2174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 2111 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-19 01:33:18,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2023-12-19 01:33:18,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 354. [2023-12-19 01:33:18,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 319 states have (on average 1.6269592476489028) internal successors, (519), 321 states have internal predecessors, (519), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-19 01:33:18,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 573 transitions. [2023-12-19 01:33:18,610 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 573 transitions. Word has length 162 [2023-12-19 01:33:18,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:18,611 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 573 transitions. [2023-12-19 01:33:18,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:18,611 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 573 transitions. [2023-12-19 01:33:18,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:33:18,612 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:18,612 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:18,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 01:33:18,612 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:18,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:18,612 INFO L85 PathProgramCache]: Analyzing trace with hash 2001720668, now seen corresponding path program 1 times [2023-12-19 01:33:18,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:18,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652561453] [2023-12-19 01:33:18,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:18,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:18,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:18,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:33:18,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:18,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:33:18,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:18,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:33:18,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:18,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:33:18,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:18,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:33:18,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:18,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:18,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:18,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652561453] [2023-12-19 01:33:18,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652561453] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:18,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:18,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 01:33:18,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66588016] [2023-12-19 01:33:18,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:18,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 01:33:18,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:18,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 01:33:18,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:33:18,959 INFO L87 Difference]: Start difference. First operand 354 states and 573 transitions. Second operand has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:20,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:20,776 INFO L93 Difference]: Finished difference Result 1307 states and 2163 transitions. [2023-12-19 01:33:20,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 01:33:20,777 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-19 01:33:20,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:20,792 INFO L225 Difference]: With dead ends: 1307 [2023-12-19 01:33:20,792 INFO L226 Difference]: Without dead ends: 972 [2023-12-19 01:33:20,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:33:20,809 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 1488 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 2302 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 2418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:20,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 1077 Invalid, 2418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2302 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 01:33:20,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2023-12-19 01:33:20,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 707. [2023-12-19 01:33:20,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 644 states have (on average 1.6381987577639752) internal successors, (1055), 647 states have internal predecessors, (1055), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2023-12-19 01:33:20,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1154 transitions. [2023-12-19 01:33:20,873 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1154 transitions. Word has length 162 [2023-12-19 01:33:20,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:20,875 INFO L495 AbstractCegarLoop]: Abstraction has 707 states and 1154 transitions. [2023-12-19 01:33:20,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:20,875 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1154 transitions. [2023-12-19 01:33:20,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:33:20,876 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:20,876 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:20,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 01:33:20,877 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:20,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:20,877 INFO L85 PathProgramCache]: Analyzing trace with hash -203647716, now seen corresponding path program 1 times [2023-12-19 01:33:20,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:20,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524453254] [2023-12-19 01:33:20,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:20,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:20,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:21,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:33:21,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:21,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:33:21,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:21,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:33:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:21,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:33:21,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:21,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:33:21,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:21,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:21,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:21,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524453254] [2023-12-19 01:33:21,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524453254] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:21,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:21,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:33:21,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305091408] [2023-12-19 01:33:21,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:21,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:33:21,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:21,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:33:21,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:33:21,288 INFO L87 Difference]: Start difference. First operand 707 states and 1154 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:25,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:25,023 INFO L93 Difference]: Finished difference Result 2164 states and 3587 transitions. [2023-12-19 01:33:25,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:33:25,024 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-19 01:33:25,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:25,030 INFO L225 Difference]: With dead ends: 2164 [2023-12-19 01:33:25,030 INFO L226 Difference]: Without dead ends: 1476 [2023-12-19 01:33:25,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:33:25,033 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 1521 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 3747 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1540 SdHoareTripleChecker+Valid, 2053 SdHoareTripleChecker+Invalid, 3812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:25,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1540 Valid, 2053 Invalid, 3812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3747 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 01:33:25,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2023-12-19 01:33:25,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1033. [2023-12-19 01:33:25,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1033 states, 942 states have (on average 1.6316348195329087) internal successors, (1537), 946 states have internal predecessors, (1537), 70 states have call successors, (70), 19 states have call predecessors, (70), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2023-12-19 01:33:25,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1033 states to 1033 states and 1680 transitions. [2023-12-19 01:33:25,086 INFO L78 Accepts]: Start accepts. Automaton has 1033 states and 1680 transitions. Word has length 162 [2023-12-19 01:33:25,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:25,086 INFO L495 AbstractCegarLoop]: Abstraction has 1033 states and 1680 transitions. [2023-12-19 01:33:25,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:25,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1033 states and 1680 transitions. [2023-12-19 01:33:25,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:33:25,088 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:25,088 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:25,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 01:33:25,088 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:25,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:25,088 INFO L85 PathProgramCache]: Analyzing trace with hash 206962650, now seen corresponding path program 1 times [2023-12-19 01:33:25,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:25,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782966600] [2023-12-19 01:33:25,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:25,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:25,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:33:25,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:25,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:33:25,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:25,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:33:25,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:25,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:33:25,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:25,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:33:25,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:25,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:25,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:25,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782966600] [2023-12-19 01:33:25,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782966600] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:25,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:25,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:33:25,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006807634] [2023-12-19 01:33:25,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:25,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:33:25,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:25,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:33:25,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:33:25,316 INFO L87 Difference]: Start difference. First operand 1033 states and 1680 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:28,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:28,960 INFO L93 Difference]: Finished difference Result 3421 states and 5661 transitions. [2023-12-19 01:33:28,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:33:28,960 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-19 01:33:28,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:28,981 INFO L225 Difference]: With dead ends: 3421 [2023-12-19 01:33:28,981 INFO L226 Difference]: Without dead ends: 2407 [2023-12-19 01:33:28,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:33:28,998 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 1519 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 3743 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 3810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:28,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1538 Valid, 2051 Invalid, 3810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3743 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-19 01:33:29,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2407 states. [2023-12-19 01:33:29,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2407 to 1686. [2023-12-19 01:33:29,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1686 states, 1539 states have (on average 1.6257309941520468) internal successors, (2502), 1545 states have internal predecessors, (2502), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2023-12-19 01:33:29,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1686 states to 1686 states and 2737 transitions. [2023-12-19 01:33:29,141 INFO L78 Accepts]: Start accepts. Automaton has 1686 states and 2737 transitions. Word has length 162 [2023-12-19 01:33:29,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:29,141 INFO L495 AbstractCegarLoop]: Abstraction has 1686 states and 2737 transitions. [2023-12-19 01:33:29,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:29,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1686 states and 2737 transitions. [2023-12-19 01:33:29,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:33:29,143 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:29,143 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:29,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 01:33:29,143 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:29,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:29,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1580907172, now seen corresponding path program 1 times [2023-12-19 01:33:29,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:29,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215056668] [2023-12-19 01:33:29,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:29,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:29,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:29,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:33:29,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:29,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:33:29,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:29,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:33:29,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:29,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:33:29,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:29,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:33:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:29,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:29,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:29,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215056668] [2023-12-19 01:33:29,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215056668] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:29,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:29,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:33:29,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99904886] [2023-12-19 01:33:29,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:29,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:33:29,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:29,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:33:29,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:33:29,442 INFO L87 Difference]: Start difference. First operand 1686 states and 2737 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:31,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:31,037 INFO L93 Difference]: Finished difference Result 4062 states and 6709 transitions. [2023-12-19 01:33:31,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:33:31,038 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-19 01:33:31,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:31,044 INFO L225 Difference]: With dead ends: 4062 [2023-12-19 01:33:31,044 INFO L226 Difference]: Without dead ends: 2395 [2023-12-19 01:33:31,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:33:31,048 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 1087 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 1913 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1107 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 1982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:31,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1107 Valid, 1051 Invalid, 1982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1913 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 01:33:31,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2395 states. [2023-12-19 01:33:31,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2395 to 1686. [2023-12-19 01:33:31,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1686 states, 1539 states have (on average 1.6224821312540612) internal successors, (2497), 1545 states have internal predecessors, (2497), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2023-12-19 01:33:31,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1686 states to 1686 states and 2732 transitions. [2023-12-19 01:33:31,112 INFO L78 Accepts]: Start accepts. Automaton has 1686 states and 2732 transitions. Word has length 162 [2023-12-19 01:33:31,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:31,112 INFO L495 AbstractCegarLoop]: Abstraction has 1686 states and 2732 transitions. [2023-12-19 01:33:31,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:31,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1686 states and 2732 transitions. [2023-12-19 01:33:31,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:33:31,113 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:31,114 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:31,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 01:33:31,114 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:31,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:31,114 INFO L85 PathProgramCache]: Analyzing trace with hash 578176922, now seen corresponding path program 1 times [2023-12-19 01:33:31,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:31,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876628571] [2023-12-19 01:33:31,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:31,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:31,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:31,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:33:31,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:31,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:33:31,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:31,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:33:31,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:31,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:33:31,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:31,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:33:31,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:31,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:31,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:31,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876628571] [2023-12-19 01:33:31,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876628571] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:31,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:31,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:33:31,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080442616] [2023-12-19 01:33:31,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:31,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:33:31,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:31,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:33:31,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:33:31,288 INFO L87 Difference]: Start difference. First operand 1686 states and 2732 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:33,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:33,203 INFO L93 Difference]: Finished difference Result 4056 states and 6683 transitions. [2023-12-19 01:33:33,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:33:33,204 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-19 01:33:33,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:33,213 INFO L225 Difference]: With dead ends: 4056 [2023-12-19 01:33:33,213 INFO L226 Difference]: Without dead ends: 2389 [2023-12-19 01:33:33,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:33:33,218 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 1090 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 1892 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1110 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 1961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:33,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1110 Valid, 1051 Invalid, 1961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1892 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 01:33:33,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2023-12-19 01:33:33,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 1686. [2023-12-19 01:33:33,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1686 states, 1539 states have (on average 1.6192332683560753) internal successors, (2492), 1545 states have internal predecessors, (2492), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2023-12-19 01:33:33,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1686 states to 1686 states and 2727 transitions. [2023-12-19 01:33:33,344 INFO L78 Accepts]: Start accepts. Automaton has 1686 states and 2727 transitions. Word has length 162 [2023-12-19 01:33:33,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:33,344 INFO L495 AbstractCegarLoop]: Abstraction has 1686 states and 2727 transitions. [2023-12-19 01:33:33,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:33,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1686 states and 2727 transitions. [2023-12-19 01:33:33,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:33:33,346 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:33,346 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:33,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 01:33:33,346 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:33,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:33,347 INFO L85 PathProgramCache]: Analyzing trace with hash 647824796, now seen corresponding path program 1 times [2023-12-19 01:33:33,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:33,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105437898] [2023-12-19 01:33:33,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:33,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:33,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:33,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:33:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:33,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:33:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:33,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:33:33,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:33,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:33:33,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:33,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:33:33,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:33,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:33,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:33,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105437898] [2023-12-19 01:33:33,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105437898] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:33,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:33,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:33:33,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528794984] [2023-12-19 01:33:33,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:33,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:33:33,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:33,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:33:33,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:33:33,565 INFO L87 Difference]: Start difference. First operand 1686 states and 2727 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:36,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:36,528 INFO L93 Difference]: Finished difference Result 5811 states and 9534 transitions. [2023-12-19 01:33:36,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:33:36,528 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-19 01:33:36,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:36,542 INFO L225 Difference]: With dead ends: 5811 [2023-12-19 01:33:36,542 INFO L226 Difference]: Without dead ends: 4144 [2023-12-19 01:33:36,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:33:36,546 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 1614 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 3046 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1633 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 3153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 3046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:36,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1633 Valid, 1330 Invalid, 3153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 3046 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-19 01:33:36,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4144 states. [2023-12-19 01:33:36,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4144 to 3006. [2023-12-19 01:33:36,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3006 states, 2747 states have (on average 1.6141244994539499) internal successors, (4434), 2757 states have internal predecessors, (4434), 196 states have call successors, (196), 55 states have call predecessors, (196), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2023-12-19 01:33:36,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3006 states to 3006 states and 4859 transitions. [2023-12-19 01:33:36,666 INFO L78 Accepts]: Start accepts. Automaton has 3006 states and 4859 transitions. Word has length 162 [2023-12-19 01:33:36,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:36,666 INFO L495 AbstractCegarLoop]: Abstraction has 3006 states and 4859 transitions. [2023-12-19 01:33:36,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:36,678 INFO L276 IsEmpty]: Start isEmpty. Operand 3006 states and 4859 transitions. [2023-12-19 01:33:36,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:33:36,680 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:36,680 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:36,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 01:33:36,681 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:36,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:36,681 INFO L85 PathProgramCache]: Analyzing trace with hash 2046778398, now seen corresponding path program 1 times [2023-12-19 01:33:36,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:36,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682959066] [2023-12-19 01:33:36,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:36,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:36,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:36,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:33:36,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:36,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:33:36,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:36,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:33:36,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:36,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:33:36,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:36,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:33:36,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:36,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:36,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:36,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682959066] [2023-12-19 01:33:36,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682959066] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:36,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:36,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:33:36,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503574450] [2023-12-19 01:33:36,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:36,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:33:36,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:36,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:33:36,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:33:36,925 INFO L87 Difference]: Start difference. First operand 3006 states and 4859 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:38,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:38,737 INFO L93 Difference]: Finished difference Result 7154 states and 11739 transitions. [2023-12-19 01:33:38,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:33:38,737 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-19 01:33:38,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:38,751 INFO L225 Difference]: With dead ends: 7154 [2023-12-19 01:33:38,751 INFO L226 Difference]: Without dead ends: 4167 [2023-12-19 01:33:38,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:33:38,759 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 1088 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 1858 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1108 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 1927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:38,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1108 Valid, 1051 Invalid, 1927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1858 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 01:33:38,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4167 states. [2023-12-19 01:33:38,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4167 to 3006. [2023-12-19 01:33:38,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3006 states, 2747 states have (on average 1.610848198034219) internal successors, (4425), 2757 states have internal predecessors, (4425), 196 states have call successors, (196), 55 states have call predecessors, (196), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2023-12-19 01:33:38,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3006 states to 3006 states and 4850 transitions. [2023-12-19 01:33:38,909 INFO L78 Accepts]: Start accepts. Automaton has 3006 states and 4850 transitions. Word has length 162 [2023-12-19 01:33:38,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:38,909 INFO L495 AbstractCegarLoop]: Abstraction has 3006 states and 4850 transitions. [2023-12-19 01:33:38,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:38,909 INFO L276 IsEmpty]: Start isEmpty. Operand 3006 states and 4850 transitions. [2023-12-19 01:33:38,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:33:38,911 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:38,911 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:38,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 01:33:38,912 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:38,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:38,912 INFO L85 PathProgramCache]: Analyzing trace with hash 429337948, now seen corresponding path program 1 times [2023-12-19 01:33:38,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:38,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231479212] [2023-12-19 01:33:38,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:38,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:38,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:38,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:33:38,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:39,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:33:39,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:39,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:33:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:39,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:33:39,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:39,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:33:39,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:39,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:39,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:39,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231479212] [2023-12-19 01:33:39,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231479212] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:39,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:39,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:33:39,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391048895] [2023-12-19 01:33:39,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:39,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:33:39,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:39,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:33:39,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:33:39,129 INFO L87 Difference]: Start difference. First operand 3006 states and 4850 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:42,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:42,826 INFO L93 Difference]: Finished difference Result 10619 states and 17352 transitions. [2023-12-19 01:33:42,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:33:42,827 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-19 01:33:42,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:42,857 INFO L225 Difference]: With dead ends: 10619 [2023-12-19 01:33:42,857 INFO L226 Difference]: Without dead ends: 7632 [2023-12-19 01:33:42,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:33:42,867 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 1497 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 3624 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 3691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:42,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 2051 Invalid, 3691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3624 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-19 01:33:42,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7632 states. [2023-12-19 01:33:43,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7632 to 5656. [2023-12-19 01:33:43,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5656 states, 5173 states have (on average 1.6062246278755075) internal successors, (8309), 5191 states have internal predecessors, (8309), 364 states have call successors, (364), 103 states have call predecessors, (364), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2023-12-19 01:33:43,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5656 states to 5656 states and 9132 transitions. [2023-12-19 01:33:43,203 INFO L78 Accepts]: Start accepts. Automaton has 5656 states and 9132 transitions. Word has length 162 [2023-12-19 01:33:43,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:43,203 INFO L495 AbstractCegarLoop]: Abstraction has 5656 states and 9132 transitions. [2023-12-19 01:33:43,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:43,203 INFO L276 IsEmpty]: Start isEmpty. Operand 5656 states and 9132 transitions. [2023-12-19 01:33:43,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:33:43,206 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:43,206 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:43,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 01:33:43,207 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:43,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:43,207 INFO L85 PathProgramCache]: Analyzing trace with hash 792804446, now seen corresponding path program 1 times [2023-12-19 01:33:43,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:43,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713578231] [2023-12-19 01:33:43,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:43,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:43,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:43,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:33:43,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:43,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:33:43,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:43,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:33:43,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:43,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:33:43,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:43,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:33:43,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:43,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:43,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:43,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713578231] [2023-12-19 01:33:43,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713578231] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:43,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:43,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:33:43,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813733483] [2023-12-19 01:33:43,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:43,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:33:43,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:43,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:33:43,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:33:43,422 INFO L87 Difference]: Start difference. First operand 5656 states and 9132 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:47,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:47,204 INFO L93 Difference]: Finished difference Result 20251 states and 33120 transitions. [2023-12-19 01:33:47,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:33:47,205 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-19 01:33:47,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:47,246 INFO L225 Difference]: With dead ends: 20251 [2023-12-19 01:33:47,246 INFO L226 Difference]: Without dead ends: 14614 [2023-12-19 01:33:47,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:33:47,261 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 1496 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 3611 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 3678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:47,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1515 Valid, 2051 Invalid, 3678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3611 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 01:33:47,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14614 states. [2023-12-19 01:33:47,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14614 to 10969. [2023-12-19 01:33:47,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10969 states, 10038 states have (on average 1.6034070531978482) internal successors, (16095), 10072 states have internal predecessors, (16095), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2023-12-19 01:33:47,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10969 states to 10969 states and 17768 transitions. [2023-12-19 01:33:47,761 INFO L78 Accepts]: Start accepts. Automaton has 10969 states and 17768 transitions. Word has length 162 [2023-12-19 01:33:47,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:47,761 INFO L495 AbstractCegarLoop]: Abstraction has 10969 states and 17768 transitions. [2023-12-19 01:33:47,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:47,762 INFO L276 IsEmpty]: Start isEmpty. Operand 10969 states and 17768 transitions. [2023-12-19 01:33:47,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:33:47,767 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:47,767 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:47,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 01:33:47,768 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:47,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:47,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1081623836, now seen corresponding path program 1 times [2023-12-19 01:33:47,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:47,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948717424] [2023-12-19 01:33:47,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:47,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:47,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:47,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:33:47,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:47,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:33:47,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:47,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:33:47,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:47,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:33:47,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:47,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:33:47,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:47,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:47,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:47,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948717424] [2023-12-19 01:33:47,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948717424] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:47,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:47,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:33:47,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198345120] [2023-12-19 01:33:47,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:48,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:33:48,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:48,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:33:48,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:33:48,002 INFO L87 Difference]: Start difference. First operand 10969 states and 17768 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:52,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:52,205 INFO L93 Difference]: Finished difference Result 39514 states and 64846 transitions. [2023-12-19 01:33:52,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:33:52,205 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-19 01:33:52,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:52,304 INFO L225 Difference]: With dead ends: 39514 [2023-12-19 01:33:52,304 INFO L226 Difference]: Without dead ends: 28564 [2023-12-19 01:33:52,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:33:52,342 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 1495 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 3598 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 3665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:52,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 2051 Invalid, 3665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3598 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-19 01:33:52,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28564 states. [2023-12-19 01:33:53,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28564 to 21626. [2023-12-19 01:33:53,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21626 states, 19799 states have (on average 1.6017475630082327) internal successors, (31713), 19865 states have internal predecessors, (31713), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2023-12-19 01:33:53,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21626 states to 21626 states and 35248 transitions. [2023-12-19 01:33:53,759 INFO L78 Accepts]: Start accepts. Automaton has 21626 states and 35248 transitions. Word has length 162 [2023-12-19 01:33:53,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:53,760 INFO L495 AbstractCegarLoop]: Abstraction has 21626 states and 35248 transitions. [2023-12-19 01:33:53,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:53,760 INFO L276 IsEmpty]: Start isEmpty. Operand 21626 states and 35248 transitions. [2023-12-19 01:33:53,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:33:53,792 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:53,793 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:53,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 01:33:53,793 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:53,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:53,793 INFO L85 PathProgramCache]: Analyzing trace with hash 536751262, now seen corresponding path program 1 times [2023-12-19 01:33:53,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:53,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435685024] [2023-12-19 01:33:53,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:53,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:53,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:53,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:33:53,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:54,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:33:54,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:54,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:33:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:54,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:33:54,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:54,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:33:54,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:54,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:54,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:54,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435685024] [2023-12-19 01:33:54,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435685024] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:54,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:54,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:33:54,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266405901] [2023-12-19 01:33:54,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:54,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:33:54,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:54,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:33:54,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:33:54,114 INFO L87 Difference]: Start difference. First operand 21626 states and 35248 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:56,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:56,799 INFO L93 Difference]: Finished difference Result 50602 states and 83834 transitions. [2023-12-19 01:33:56,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:33:56,799 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-19 01:33:56,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:56,906 INFO L225 Difference]: With dead ends: 50602 [2023-12-19 01:33:56,907 INFO L226 Difference]: Without dead ends: 28995 [2023-12-19 01:33:56,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:33:56,965 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 1242 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 1641 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1262 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 1738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:56,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1262 Valid, 884 Invalid, 1738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1641 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 01:33:57,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28995 states. [2023-12-19 01:33:58,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28995 to 21626. [2023-12-19 01:33:58,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21626 states, 19799 states have (on average 1.598464568917622) internal successors, (31648), 19865 states have internal predecessors, (31648), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2023-12-19 01:33:58,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21626 states to 21626 states and 35183 transitions. [2023-12-19 01:33:58,604 INFO L78 Accepts]: Start accepts. Automaton has 21626 states and 35183 transitions. Word has length 162 [2023-12-19 01:33:58,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:58,604 INFO L495 AbstractCegarLoop]: Abstraction has 21626 states and 35183 transitions. [2023-12-19 01:33:58,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:58,605 INFO L276 IsEmpty]: Start isEmpty. Operand 21626 states and 35183 transitions. [2023-12-19 01:33:58,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:33:58,634 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:58,634 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:58,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 01:33:58,635 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:58,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:58,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1211911388, now seen corresponding path program 1 times [2023-12-19 01:33:58,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:58,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284292543] [2023-12-19 01:33:58,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:58,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:58,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:58,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:33:58,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:58,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:33:58,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:58,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:33:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:58,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:33:58,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:58,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:33:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:58,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:58,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:58,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284292543] [2023-12-19 01:33:58,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284292543] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:58,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:58,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:33:58,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354970897] [2023-12-19 01:33:58,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:58,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:33:58,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:58,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:33:58,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:33:58,933 INFO L87 Difference]: Start difference. First operand 21626 states and 35183 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:34:01,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:34:01,560 INFO L93 Difference]: Finished difference Result 50536 states and 83507 transitions. [2023-12-19 01:34:01,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:34:01,561 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-19 01:34:01,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:34:01,663 INFO L225 Difference]: With dead ends: 50536 [2023-12-19 01:34:01,663 INFO L226 Difference]: Without dead ends: 28929 [2023-12-19 01:34:01,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:34:01,710 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 1092 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 1791 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1112 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 1860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:34:01,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1112 Valid, 1051 Invalid, 1860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1791 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 01:34:01,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28929 states. [2023-12-19 01:34:02,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28929 to 21626. [2023-12-19 01:34:03,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21626 states, 19799 states have (on average 1.5951815748270115) internal successors, (31583), 19865 states have internal predecessors, (31583), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2023-12-19 01:34:03,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21626 states to 21626 states and 35118 transitions. [2023-12-19 01:34:03,062 INFO L78 Accepts]: Start accepts. Automaton has 21626 states and 35118 transitions. Word has length 162 [2023-12-19 01:34:03,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:34:03,062 INFO L495 AbstractCegarLoop]: Abstraction has 21626 states and 35118 transitions. [2023-12-19 01:34:03,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:34:03,062 INFO L276 IsEmpty]: Start isEmpty. Operand 21626 states and 35118 transitions. [2023-12-19 01:34:03,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:34:03,072 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:34:03,073 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:34:03,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 01:34:03,073 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:34:03,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:34:03,073 INFO L85 PathProgramCache]: Analyzing trace with hash 263859422, now seen corresponding path program 1 times [2023-12-19 01:34:03,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:34:03,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695197270] [2023-12-19 01:34:03,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:34:03,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:34:03,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:03,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:34:03,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:03,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:34:03,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:03,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:34:03,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:03,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:34:03,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:03,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:34:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:03,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:34:03,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:34:03,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695197270] [2023-12-19 01:34:03,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695197270] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:34:03,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:34:03,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:34:03,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718785539] [2023-12-19 01:34:03,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:34:03,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:34:03,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:34:03,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:34:03,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:34:03,269 INFO L87 Difference]: Start difference. First operand 21626 states and 35118 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:34:08,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:34:08,878 INFO L93 Difference]: Finished difference Result 87123 states and 142898 transitions. [2023-12-19 01:34:08,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:34:08,878 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-19 01:34:08,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:34:09,106 INFO L225 Difference]: With dead ends: 87123 [2023-12-19 01:34:09,106 INFO L226 Difference]: Without dead ends: 65516 [2023-12-19 01:34:09,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:34:09,176 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 1673 mSDsluCounter, 1084 mSDsCounter, 0 mSdLazyCounter, 3754 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1691 SdHoareTripleChecker+Valid, 1402 SdHoareTripleChecker+Invalid, 3857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 3754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:34:09,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1691 Valid, 1402 Invalid, 3857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 3754 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-19 01:34:09,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65516 states. [2023-12-19 01:34:11,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65516 to 42558. [2023-12-19 01:34:11,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42558 states, 39003 states have (on average 1.591851908827526) internal successors, (62087), 39133 states have internal predecessors, (62087), 2652 states have call successors, (2652), 775 states have call predecessors, (2652), 902 states have return successors, (4965), 2777 states have call predecessors, (4965), 2650 states have call successors, (4965) [2023-12-19 01:34:11,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42558 states to 42558 states and 69704 transitions. [2023-12-19 01:34:11,586 INFO L78 Accepts]: Start accepts. Automaton has 42558 states and 69704 transitions. Word has length 162 [2023-12-19 01:34:11,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:34:11,586 INFO L495 AbstractCegarLoop]: Abstraction has 42558 states and 69704 transitions. [2023-12-19 01:34:11,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:34:11,586 INFO L276 IsEmpty]: Start isEmpty. Operand 42558 states and 69704 transitions. [2023-12-19 01:34:11,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:34:11,642 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:34:11,642 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:34:11,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-19 01:34:11,642 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:34:11,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:34:11,643 INFO L85 PathProgramCache]: Analyzing trace with hash -170646176, now seen corresponding path program 1 times [2023-12-19 01:34:11,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:34:11,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863118328] [2023-12-19 01:34:11,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:34:11,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:34:11,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:11,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:34:11,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:11,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:34:11,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:11,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:34:11,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:11,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:34:11,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:11,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:34:11,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:11,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:34:11,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:34:11,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863118328] [2023-12-19 01:34:11,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863118328] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:34:11,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:34:11,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:34:11,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385715733] [2023-12-19 01:34:11,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:34:11,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:34:11,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:34:11,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:34:11,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:34:11,966 INFO L87 Difference]: Start difference. First operand 42558 states and 69704 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:34:18,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:34:18,873 INFO L93 Difference]: Finished difference Result 170133 states and 281438 transitions. [2023-12-19 01:34:18,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:34:18,873 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-19 01:34:18,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:34:19,430 INFO L225 Difference]: With dead ends: 170133 [2023-12-19 01:34:19,430 INFO L226 Difference]: Without dead ends: 127594 [2023-12-19 01:34:19,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:34:19,601 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 1845 mSDsluCounter, 1572 mSDsCounter, 0 mSdLazyCounter, 3493 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1877 SdHoareTripleChecker+Valid, 2044 SdHoareTripleChecker+Invalid, 3563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 3493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:34:19,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1877 Valid, 2044 Invalid, 3563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 3493 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-19 01:34:19,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127594 states. [2023-12-19 01:34:24,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127594 to 84927. [2023-12-19 01:34:24,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84927 states, 77980 states have (on average 1.5914978199538343) internal successors, (124105), 78238 states have internal predecessors, (124105), 5148 states have call successors, (5148), 1543 states have call predecessors, (5148), 1798 states have return successors, (11963), 5401 states have call predecessors, (11963), 5146 states have call successors, (11963) [2023-12-19 01:34:24,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84927 states to 84927 states and 141216 transitions. [2023-12-19 01:34:24,767 INFO L78 Accepts]: Start accepts. Automaton has 84927 states and 141216 transitions. Word has length 162 [2023-12-19 01:34:24,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:34:24,767 INFO L495 AbstractCegarLoop]: Abstraction has 84927 states and 141216 transitions. [2023-12-19 01:34:24,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:34:24,768 INFO L276 IsEmpty]: Start isEmpty. Operand 84927 states and 141216 transitions. [2023-12-19 01:34:24,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:34:24,873 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:34:24,873 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:34:24,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-19 01:34:24,874 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:34:24,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:34:24,874 INFO L85 PathProgramCache]: Analyzing trace with hash -600304482, now seen corresponding path program 1 times [2023-12-19 01:34:24,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:34:24,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006606102] [2023-12-19 01:34:24,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:34:24,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:34:24,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:25,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:34:25,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:25,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:34:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:25,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:34:25,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:25,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:34:25,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:25,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:34:25,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:25,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:34:25,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:34:25,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006606102] [2023-12-19 01:34:25,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006606102] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:34:25,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:34:25,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:34:25,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108934304] [2023-12-19 01:34:25,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:34:25,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:34:25,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:34:25,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:34:25,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:34:25,458 INFO L87 Difference]: Start difference. First operand 84927 states and 141216 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:34:36,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:34:36,781 INFO L93 Difference]: Finished difference Result 335636 states and 563572 transitions. [2023-12-19 01:34:36,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:34:36,782 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-19 01:34:36,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:34:38,190 INFO L225 Difference]: With dead ends: 335636 [2023-12-19 01:34:38,191 INFO L226 Difference]: Without dead ends: 250728 [2023-12-19 01:34:38,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:34:38,435 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 1563 mSDsluCounter, 1572 mSDsCounter, 0 mSdLazyCounter, 4065 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1581 SdHoareTripleChecker+Valid, 2044 SdHoareTripleChecker+Invalid, 4134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 4065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:34:38,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1581 Valid, 2044 Invalid, 4134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 4065 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-19 01:34:38,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250728 states. [2023-12-19 01:34:48,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250728 to 169664. [2023-12-19 01:34:48,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169664 states, 156061 states have (on average 1.5916532637878777) internal successors, (248395), 156575 states have internal predecessors, (248395), 10012 states have call successors, (10012), 3079 states have call predecessors, (10012), 3590 states have return successors, (30205), 10521 states have call predecessors, (30205), 10010 states have call successors, (30205) [2023-12-19 01:34:49,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169664 states to 169664 states and 288612 transitions. [2023-12-19 01:34:49,993 INFO L78 Accepts]: Start accepts. Automaton has 169664 states and 288612 transitions. Word has length 162 [2023-12-19 01:34:49,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:34:49,993 INFO L495 AbstractCegarLoop]: Abstraction has 169664 states and 288612 transitions. [2023-12-19 01:34:49,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:34:49,993 INFO L276 IsEmpty]: Start isEmpty. Operand 169664 states and 288612 transitions. [2023-12-19 01:34:50,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:34:50,063 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:34:50,063 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:34:50,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-19 01:34:50,063 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:34:50,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:34:50,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1306901088, now seen corresponding path program 1 times [2023-12-19 01:34:50,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:34:50,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362155893] [2023-12-19 01:34:50,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:34:50,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:34:50,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:50,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:34:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:50,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:34:50,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:50,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:34:50,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:50,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:34:50,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:50,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:34:50,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:50,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:34:50,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:34:50,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362155893] [2023-12-19 01:34:50,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362155893] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:34:50,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:34:50,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:34:50,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802971037] [2023-12-19 01:34:50,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:34:50,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:34:50,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:34:50,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:34:50,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:34:50,254 INFO L87 Difference]: Start difference. First operand 169664 states and 288612 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:35:12,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:35:12,296 INFO L93 Difference]: Finished difference Result 662803 states and 1138682 transitions. [2023-12-19 01:35:12,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:35:12,297 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-19 01:35:12,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:35:15,682 INFO L225 Difference]: With dead ends: 662803 [2023-12-19 01:35:15,682 INFO L226 Difference]: Without dead ends: 493158 [2023-12-19 01:35:16,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:35:16,404 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 1773 mSDsluCounter, 1572 mSDsCounter, 0 mSdLazyCounter, 3467 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1805 SdHoareTripleChecker+Valid, 2044 SdHoareTripleChecker+Invalid, 3537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 3467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 01:35:16,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1805 Valid, 2044 Invalid, 3537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 3467 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 01:35:16,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493158 states.