/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.12.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 14:45:15,376 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 14:45:15,470 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 14:45:15,477 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 14:45:15,477 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 14:45:15,506 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 14:45:15,506 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 14:45:15,507 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 14:45:15,507 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 14:45:15,511 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 14:45:15,511 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 14:45:15,512 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 14:45:15,512 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 14:45:15,513 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 14:45:15,514 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 14:45:15,514 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 14:45:15,514 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 14:45:15,514 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 14:45:15,515 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 14:45:15,516 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 14:45:15,516 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 14:45:15,516 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 14:45:15,517 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 14:45:15,517 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 14:45:15,517 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 14:45:15,517 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 14:45:15,518 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 14:45:15,518 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 14:45:15,518 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 14:45:15,519 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 14:45:15,520 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 14:45:15,520 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 14:45:15,520 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 14:45:15,520 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 14:45:15,520 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 14:45:15,520 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 14:45:15,521 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 14:45:15,521 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 14:45:15,521 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 14:45:15,521 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 14:45:15,521 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 14:45:15,522 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 14:45:15,522 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 14:45:15,522 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 14:45:15,781 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 14:45:15,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 14:45:15,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 14:45:15,811 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 14:45:15,811 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 14:45:15,812 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.12.cil-1.c [2023-12-20 14:45:17,060 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 14:45:17,277 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 14:45:17,277 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.12.cil-1.c [2023-12-20 14:45:17,302 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57bc62df2/dc9b2ed97c3a48ecaf3de94c210cc480/FLAG47163f0cb [2023-12-20 14:45:17,318 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57bc62df2/dc9b2ed97c3a48ecaf3de94c210cc480 [2023-12-20 14:45:17,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 14:45:17,322 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 14:45:17,324 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 14:45:17,324 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 14:45:17,328 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 14:45:17,329 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:45:17" (1/1) ... [2023-12-20 14:45:17,330 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2428e5ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:45:17, skipping insertion in model container [2023-12-20 14:45:17,330 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:45:17" (1/1) ... [2023-12-20 14:45:17,395 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 14:45:17,598 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.12.cil-1.c[913,926] [2023-12-20 14:45:17,682 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.12.cil-1.c[5977,5990] [2023-12-20 14:45:17,792 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 14:45:17,807 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 14:45:17,815 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.12.cil-1.c[913,926] [2023-12-20 14:45:17,840 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.12.cil-1.c[5977,5990] [2023-12-20 14:45:17,912 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 14:45:17,942 INFO L206 MainTranslator]: Completed translation [2023-12-20 14:45:17,942 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:45:17 WrapperNode [2023-12-20 14:45:17,943 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 14:45:17,944 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 14:45:17,944 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 14:45:17,951 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 14:45:17,957 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:45:17" (1/1) ... [2023-12-20 14:45:17,973 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:45:17" (1/1) ... [2023-12-20 14:45:18,035 INFO L138 Inliner]: procedures = 72, calls = 85, calls flagged for inlining = 46, calls inlined = 46, statements flattened = 1089 [2023-12-20 14:45:18,036 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 14:45:18,037 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 14:45:18,037 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 14:45:18,037 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 14:45:18,056 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:45:17" (1/1) ... [2023-12-20 14:45:18,056 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:45:17" (1/1) ... [2023-12-20 14:45:18,067 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:45:17" (1/1) ... [2023-12-20 14:45:18,099 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 14:45:18,099 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:45:17" (1/1) ... [2023-12-20 14:45:18,100 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:45:17" (1/1) ... [2023-12-20 14:45:18,125 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:45:17" (1/1) ... [2023-12-20 14:45:18,136 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:45:17" (1/1) ... [2023-12-20 14:45:18,139 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:45:17" (1/1) ... [2023-12-20 14:45:18,142 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:45:17" (1/1) ... [2023-12-20 14:45:18,147 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 14:45:18,148 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 14:45:18,148 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 14:45:18,148 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 14:45:18,160 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:45:17" (1/1) ... [2023-12-20 14:45:18,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 14:45:18,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:45:18,205 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 14:45:18,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 14:45:18,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 14:45:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-20 14:45:18,233 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-20 14:45:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2023-12-20 14:45:18,234 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2023-12-20 14:45:18,235 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-20 14:45:18,235 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-20 14:45:18,235 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-20 14:45:18,235 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-20 14:45:18,235 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-20 14:45:18,235 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-20 14:45:18,236 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-20 14:45:18,236 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-20 14:45:18,236 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-20 14:45:18,236 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-20 14:45:18,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 14:45:18,236 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-20 14:45:18,236 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-20 14:45:18,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 14:45:18,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 14:45:18,237 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-20 14:45:18,237 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-20 14:45:18,237 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2023-12-20 14:45:18,238 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2023-12-20 14:45:18,391 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 14:45:18,393 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 14:45:19,151 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 14:45:19,214 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 14:45:19,215 INFO L309 CfgBuilder]: Removed 19 assume(true) statements. [2023-12-20 14:45:19,215 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:45:19 BoogieIcfgContainer [2023-12-20 14:45:19,215 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 14:45:19,217 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 14:45:19,217 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 14:45:19,219 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 14:45:19,220 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 02:45:17" (1/3) ... [2023-12-20 14:45:19,220 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@215a9082 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:45:19, skipping insertion in model container [2023-12-20 14:45:19,220 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:45:17" (2/3) ... [2023-12-20 14:45:19,221 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@215a9082 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:45:19, skipping insertion in model container [2023-12-20 14:45:19,221 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:45:19" (3/3) ... [2023-12-20 14:45:19,222 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.12.cil-1.c [2023-12-20 14:45:19,236 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 14:45:19,236 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 14:45:19,289 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 14:45:19,294 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;@1da6df7a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 14:45:19,294 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 14:45:19,300 INFO L276 IsEmpty]: Start isEmpty. Operand has 419 states, 372 states have (on average 1.728494623655914) internal successors, (643), 379 states have internal predecessors, (643), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-20 14:45:19,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-20 14:45:19,307 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:19,307 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:45:19,308 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:19,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:19,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1310357049, now seen corresponding path program 1 times [2023-12-20 14:45:19,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:19,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489382967] [2023-12-20 14:45:19,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:19,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:19,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:19,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 14:45:19,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:19,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:45:19,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:19,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:19,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:19,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489382967] [2023-12-20 14:45:19,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489382967] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:19,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:19,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 14:45:19,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583344318] [2023-12-20 14:45:19,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:19,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:45:19,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:19,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:45:19,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:45:19,686 INFO L87 Difference]: Start difference. First operand has 419 states, 372 states have (on average 1.728494623655914) internal successors, (643), 379 states have internal predecessors, (643), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-20 14:45:20,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:20,324 INFO L93 Difference]: Finished difference Result 878 states and 1486 transitions. [2023-12-20 14:45:20,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 14:45:20,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2023-12-20 14:45:20,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:20,349 INFO L225 Difference]: With dead ends: 878 [2023-12-20 14:45:20,349 INFO L226 Difference]: Without dead ends: 476 [2023-12-20 14:45:20,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 14:45:20,360 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 899 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:20,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [924 Valid, 718 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 14:45:20,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2023-12-20 14:45:20,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 470. [2023-12-20 14:45:20,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 419 states have (on average 1.594272076372315) internal successors, (668), 424 states have internal predecessors, (668), 38 states have call successors, (38), 12 states have call predecessors, (38), 11 states have return successors, (40), 34 states have call predecessors, (40), 34 states have call successors, (40) [2023-12-20 14:45:20,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 746 transitions. [2023-12-20 14:45:20,453 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 746 transitions. Word has length 37 [2023-12-20 14:45:20,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:20,453 INFO L495 AbstractCegarLoop]: Abstraction has 470 states and 746 transitions. [2023-12-20 14:45:20,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-20 14:45:20,454 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 746 transitions. [2023-12-20 14:45:20,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-20 14:45:20,456 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:20,456 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:45:20,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 14:45:20,457 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:20,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:20,457 INFO L85 PathProgramCache]: Analyzing trace with hash 953818000, now seen corresponding path program 1 times [2023-12-20 14:45:20,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:20,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723013733] [2023-12-20 14:45:20,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:20,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:20,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:20,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 14:45:20,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:20,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-20 14:45:20,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:20,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:20,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:20,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723013733] [2023-12-20 14:45:20,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723013733] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:20,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:20,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 14:45:20,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635816479] [2023-12-20 14:45:20,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:20,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:45:20,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:20,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:45:20,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:45:20,530 INFO L87 Difference]: Start difference. First operand 470 states and 746 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-20 14:45:21,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:21,046 INFO L93 Difference]: Finished difference Result 704 states and 1090 transitions. [2023-12-20 14:45:21,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 14:45:21,046 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2023-12-20 14:45:21,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:21,051 INFO L225 Difference]: With dead ends: 704 [2023-12-20 14:45:21,051 INFO L226 Difference]: Without dead ends: 593 [2023-12-20 14:45:21,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 14:45:21,053 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 912 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:21,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [938 Valid, 717 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 14:45:21,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2023-12-20 14:45:21,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 570. [2023-12-20 14:45:21,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 506 states have (on average 1.5533596837944663) internal successors, (786), 512 states have internal predecessors, (786), 46 states have call successors, (46), 16 states have call predecessors, (46), 16 states have return successors, (54), 42 states have call predecessors, (54), 42 states have call successors, (54) [2023-12-20 14:45:21,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 886 transitions. [2023-12-20 14:45:21,092 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 886 transitions. Word has length 38 [2023-12-20 14:45:21,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:21,092 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 886 transitions. [2023-12-20 14:45:21,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-20 14:45:21,092 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 886 transitions. [2023-12-20 14:45:21,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-20 14:45:21,094 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:21,094 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:45:21,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 14:45:21,095 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:21,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:21,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1819321221, now seen corresponding path program 1 times [2023-12-20 14:45:21,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:21,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443032652] [2023-12-20 14:45:21,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:21,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:21,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:21,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 14:45:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:21,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 14:45:21,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:21,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:21,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:21,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443032652] [2023-12-20 14:45:21,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443032652] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:21,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:21,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 14:45:21,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141420140] [2023-12-20 14:45:21,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:21,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:45:21,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:21,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:45:21,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:45:21,169 INFO L87 Difference]: Start difference. First operand 570 states and 886 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-20 14:45:21,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:21,725 INFO L93 Difference]: Finished difference Result 990 states and 1467 transitions. [2023-12-20 14:45:21,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 14:45:21,726 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2023-12-20 14:45:21,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:21,730 INFO L225 Difference]: With dead ends: 990 [2023-12-20 14:45:21,731 INFO L226 Difference]: Without dead ends: 779 [2023-12-20 14:45:21,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 14:45:21,735 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 347 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:21,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 1018 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 14:45:21,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2023-12-20 14:45:21,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 675. [2023-12-20 14:45:21,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 599 states have (on average 1.5275459098497495) internal successors, (915), 607 states have internal predecessors, (915), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (60), 46 states have call predecessors, (60), 48 states have call successors, (60) [2023-12-20 14:45:21,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1027 transitions. [2023-12-20 14:45:21,780 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1027 transitions. Word has length 39 [2023-12-20 14:45:21,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:21,780 INFO L495 AbstractCegarLoop]: Abstraction has 675 states and 1027 transitions. [2023-12-20 14:45:21,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-20 14:45:21,781 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1027 transitions. [2023-12-20 14:45:21,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-20 14:45:21,785 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:21,785 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:45:21,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 14:45:21,786 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:21,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:21,787 INFO L85 PathProgramCache]: Analyzing trace with hash -24942822, now seen corresponding path program 1 times [2023-12-20 14:45:21,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:21,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183951309] [2023-12-20 14:45:21,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:21,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:21,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:21,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 14:45:21,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:21,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-20 14:45:21,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:21,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:45:21,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:21,872 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 14:45:21,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:21,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183951309] [2023-12-20 14:45:21,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183951309] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:21,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:21,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 14:45:21,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809540886] [2023-12-20 14:45:21,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:21,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:45:21,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:21,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:45:21,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:45:21,875 INFO L87 Difference]: Start difference. First operand 675 states and 1027 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 14:45:22,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:22,418 INFO L93 Difference]: Finished difference Result 1191 states and 1744 transitions. [2023-12-20 14:45:22,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 14:45:22,420 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 54 [2023-12-20 14:45:22,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:22,424 INFO L225 Difference]: With dead ends: 1191 [2023-12-20 14:45:22,424 INFO L226 Difference]: Without dead ends: 875 [2023-12-20 14:45:22,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 14:45:22,426 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 332 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:22,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 1065 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 14:45:22,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2023-12-20 14:45:22,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 841. [2023-12-20 14:45:22,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 741 states have (on average 1.4723346828609987) internal successors, (1091), 751 states have internal predecessors, (1091), 66 states have call successors, (66), 30 states have call predecessors, (66), 32 states have return successors, (84), 60 states have call predecessors, (84), 62 states have call successors, (84) [2023-12-20 14:45:22,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1241 transitions. [2023-12-20 14:45:22,459 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1241 transitions. Word has length 54 [2023-12-20 14:45:22,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:22,460 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 1241 transitions. [2023-12-20 14:45:22,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 14:45:22,460 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1241 transitions. [2023-12-20 14:45:22,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-20 14:45:22,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:22,462 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:45:22,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 14:45:22,462 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:22,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:22,463 INFO L85 PathProgramCache]: Analyzing trace with hash 273605395, now seen corresponding path program 1 times [2023-12-20 14:45:22,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:22,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29782778] [2023-12-20 14:45:22,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:22,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:22,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:22,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 14:45:22,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:22,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:45:22,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:22,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:45:22,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:22,531 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-20 14:45:22,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:22,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29782778] [2023-12-20 14:45:22,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29782778] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:22,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:22,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 14:45:22,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578004948] [2023-12-20 14:45:22,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:22,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:45:22,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:22,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:45:22,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:45:22,534 INFO L87 Difference]: Start difference. First operand 841 states and 1241 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-20 14:45:23,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:23,009 INFO L93 Difference]: Finished difference Result 1420 states and 2020 transitions. [2023-12-20 14:45:23,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 14:45:23,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 59 [2023-12-20 14:45:23,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:23,014 INFO L225 Difference]: With dead ends: 1420 [2023-12-20 14:45:23,015 INFO L226 Difference]: Without dead ends: 1018 [2023-12-20 14:45:23,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 14:45:23,019 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 898 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:23,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [924 Valid, 729 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 14:45:23,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2023-12-20 14:45:23,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 969. [2023-12-20 14:45:23,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 969 states, 853 states have (on average 1.4372801875732708) internal successors, (1226), 865 states have internal predecessors, (1226), 74 states have call successors, (74), 36 states have call predecessors, (74), 40 states have return successors, (98), 68 states have call predecessors, (98), 70 states have call successors, (98) [2023-12-20 14:45:23,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1398 transitions. [2023-12-20 14:45:23,077 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1398 transitions. Word has length 59 [2023-12-20 14:45:23,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:23,078 INFO L495 AbstractCegarLoop]: Abstraction has 969 states and 1398 transitions. [2023-12-20 14:45:23,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-20 14:45:23,079 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1398 transitions. [2023-12-20 14:45:23,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-20 14:45:23,081 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:23,081 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:45:23,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 14:45:23,081 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:23,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:23,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1754342566, now seen corresponding path program 1 times [2023-12-20 14:45:23,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:23,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899684355] [2023-12-20 14:45:23,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:23,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:23,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:23,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 14:45:23,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:23,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:45:23,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:23,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:45:23,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:23,176 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-20 14:45:23,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:23,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899684355] [2023-12-20 14:45:23,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899684355] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:23,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:23,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 14:45:23,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452750228] [2023-12-20 14:45:23,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:23,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 14:45:23,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:23,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 14:45:23,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 14:45:23,178 INFO L87 Difference]: Start difference. First operand 969 states and 1398 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-20 14:45:23,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:23,862 INFO L93 Difference]: Finished difference Result 1455 states and 2060 transitions. [2023-12-20 14:45:23,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 14:45:23,862 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 60 [2023-12-20 14:45:23,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:23,867 INFO L225 Difference]: With dead ends: 1455 [2023-12-20 14:45:23,867 INFO L226 Difference]: Without dead ends: 917 [2023-12-20 14:45:23,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:45:23,869 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 284 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 1329 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:23,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 1329 Invalid, 1081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 14:45:23,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2023-12-20 14:45:23,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 844. [2023-12-20 14:45:23,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 745 states have (on average 1.4483221476510066) internal successors, (1079), 756 states have internal predecessors, (1079), 64 states have call successors, (64), 30 states have call predecessors, (64), 33 states have return successors, (80), 58 states have call predecessors, (80), 60 states have call successors, (80) [2023-12-20 14:45:23,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 1223 transitions. [2023-12-20 14:45:23,917 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 1223 transitions. Word has length 60 [2023-12-20 14:45:23,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:23,917 INFO L495 AbstractCegarLoop]: Abstraction has 844 states and 1223 transitions. [2023-12-20 14:45:23,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-20 14:45:23,918 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 1223 transitions. [2023-12-20 14:45:23,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-20 14:45:23,919 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:23,919 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:45:23,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 14:45:23,919 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:23,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:23,920 INFO L85 PathProgramCache]: Analyzing trace with hash 43297050, now seen corresponding path program 1 times [2023-12-20 14:45:23,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:23,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798597982] [2023-12-20 14:45:23,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:23,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:23,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:23,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 14:45:23,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:23,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:45:23,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:23,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:45:23,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:23,997 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 14:45:23,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:23,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798597982] [2023-12-20 14:45:23,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798597982] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:45:23,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782942524] [2023-12-20 14:45:23,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:23,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:45:23,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:45:24,004 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:45:24,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 14:45:24,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:24,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-20 14:45:24,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:45:24,241 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:24,241 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:45:24,280 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-20 14:45:24,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782942524] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-20 14:45:24,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-20 14:45:24,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 7 [2023-12-20 14:45:24,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634063481] [2023-12-20 14:45:24,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:24,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:45:24,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:24,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:45:24,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:45:24,282 INFO L87 Difference]: Start difference. First operand 844 states and 1223 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 14:45:24,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:24,467 INFO L93 Difference]: Finished difference Result 893 states and 1284 transitions. [2023-12-20 14:45:24,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 14:45:24,467 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 60 [2023-12-20 14:45:24,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:24,473 INFO L225 Difference]: With dead ends: 893 [2023-12-20 14:45:24,473 INFO L226 Difference]: Without dead ends: 890 [2023-12-20 14:45:24,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:45:24,474 INFO L413 NwaCegarLoop]: 628 mSDtfsCounter, 1200 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1200 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:24,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1200 Valid, 683 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:45:24,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2023-12-20 14:45:24,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 843. [2023-12-20 14:45:24,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 745 states have (on average 1.4456375838926174) internal successors, (1077), 755 states have internal predecessors, (1077), 63 states have call successors, (63), 30 states have call predecessors, (63), 33 states have return successors, (80), 58 states have call predecessors, (80), 60 states have call successors, (80) [2023-12-20 14:45:24,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1220 transitions. [2023-12-20 14:45:24,508 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1220 transitions. Word has length 60 [2023-12-20 14:45:24,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:24,509 INFO L495 AbstractCegarLoop]: Abstraction has 843 states and 1220 transitions. [2023-12-20 14:45:24,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 14:45:24,509 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1220 transitions. [2023-12-20 14:45:24,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 14:45:24,511 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:24,511 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:45:24,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 14:45:24,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:45:24,719 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:24,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:24,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1340775158, now seen corresponding path program 1 times [2023-12-20 14:45:24,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:24,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709718048] [2023-12-20 14:45:24,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:24,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:24,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:24,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 14:45:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:24,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:45:24,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:24,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:45:24,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:24,844 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 14:45:24,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:24,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709718048] [2023-12-20 14:45:24,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709718048] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:45:24,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924202892] [2023-12-20 14:45:24,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:24,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:45:24,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:45:24,846 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:45:24,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 14:45:24,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:24,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-20 14:45:24,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:45:25,231 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:25,231 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:45:25,296 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-20 14:45:25,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924202892] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:45:25,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:45:25,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2023-12-20 14:45:25,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458439045] [2023-12-20 14:45:25,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:45:25,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-20 14:45:25,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:25,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-20 14:45:25,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-20 14:45:25,301 INFO L87 Difference]: Start difference. First operand 843 states and 1220 transitions. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 9 states have internal predecessors, (134), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-12-20 14:45:26,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:26,825 INFO L93 Difference]: Finished difference Result 2079 states and 2872 transitions. [2023-12-20 14:45:26,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-20 14:45:26,826 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 9 states have internal predecessors, (134), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 61 [2023-12-20 14:45:26,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:26,832 INFO L225 Difference]: With dead ends: 2079 [2023-12-20 14:45:26,832 INFO L226 Difference]: Without dead ends: 1681 [2023-12-20 14:45:26,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=664, Unknown=0, NotChecked=0, Total=812 [2023-12-20 14:45:26,834 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 1116 mSDsluCounter, 2325 mSDsCounter, 0 mSdLazyCounter, 2367 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 2762 SdHoareTripleChecker+Invalid, 2414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:26,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1149 Valid, 2762 Invalid, 2414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 2367 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 14:45:26,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1681 states. [2023-12-20 14:45:26,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1681 to 1172. [2023-12-20 14:45:26,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 1037 states have (on average 1.399228543876567) internal successors, (1451), 1054 states have internal predecessors, (1451), 82 states have call successors, (82), 43 states have call predecessors, (82), 51 states have return successors, (111), 75 states have call predecessors, (111), 79 states have call successors, (111) [2023-12-20 14:45:26,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1644 transitions. [2023-12-20 14:45:26,886 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1644 transitions. Word has length 61 [2023-12-20 14:45:26,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:26,886 INFO L495 AbstractCegarLoop]: Abstraction has 1172 states and 1644 transitions. [2023-12-20 14:45:26,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 9 states have internal predecessors, (134), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-12-20 14:45:26,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1644 transitions. [2023-12-20 14:45:26,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-20 14:45:26,889 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:26,889 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:45:26,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 14:45:27,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-20 14:45:27,092 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:27,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:27,093 INFO L85 PathProgramCache]: Analyzing trace with hash -758325088, now seen corresponding path program 1 times [2023-12-20 14:45:27,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:27,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767062720] [2023-12-20 14:45:27,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:27,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:27,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:27,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 14:45:27,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:27,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:45:27,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:27,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:45:27,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:27,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-20 14:45:27,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:27,165 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-20 14:45:27,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:27,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767062720] [2023-12-20 14:45:27,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767062720] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:27,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:27,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 14:45:27,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147228056] [2023-12-20 14:45:27,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:27,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:45:27,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:27,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:45:27,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:45:27,167 INFO L87 Difference]: Start difference. First operand 1172 states and 1644 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-20 14:45:27,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:27,674 INFO L93 Difference]: Finished difference Result 1806 states and 2467 transitions. [2023-12-20 14:45:27,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 14:45:27,675 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 78 [2023-12-20 14:45:27,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:27,679 INFO L225 Difference]: With dead ends: 1806 [2023-12-20 14:45:27,679 INFO L226 Difference]: Without dead ends: 1141 [2023-12-20 14:45:27,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 14:45:27,681 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 911 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:27,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [938 Valid, 745 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 14:45:27,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2023-12-20 14:45:27,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 1064. [2023-12-20 14:45:27,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1064 states, 942 states have (on average 1.4044585987261147) internal successors, (1323), 959 states have internal predecessors, (1323), 75 states have call successors, (75), 38 states have call predecessors, (75), 45 states have return successors, (100), 67 states have call predecessors, (100), 72 states have call successors, (100) [2023-12-20 14:45:27,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1498 transitions. [2023-12-20 14:45:27,722 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1498 transitions. Word has length 78 [2023-12-20 14:45:27,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:27,723 INFO L495 AbstractCegarLoop]: Abstraction has 1064 states and 1498 transitions. [2023-12-20 14:45:27,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-20 14:45:27,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1498 transitions. [2023-12-20 14:45:27,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 14:45:27,725 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:27,725 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:45:27,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 14:45:27,725 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:27,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:27,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1647899131, now seen corresponding path program 1 times [2023-12-20 14:45:27,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:27,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691390383] [2023-12-20 14:45:27,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:27,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:27,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 14:45:27,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:27,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:45:27,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:27,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-20 14:45:27,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:27,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-20 14:45:27,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:27,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-20 14:45:27,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:27,827 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-20 14:45:27,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:27,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691390383] [2023-12-20 14:45:27,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691390383] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:45:27,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946068761] [2023-12-20 14:45:27,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:27,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:45:27,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:45:27,829 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:45:27,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 14:45:27,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:27,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 14:45:27,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:45:27,974 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 14:45:27,974 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:45:27,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946068761] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:27,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:45:27,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-20 14:45:27,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283059907] [2023-12-20 14:45:27,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:27,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:45:27,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:27,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:45:27,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 14:45:27,976 INFO L87 Difference]: Start difference. First operand 1064 states and 1498 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-20 14:45:28,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:28,075 INFO L93 Difference]: Finished difference Result 1349 states and 1856 transitions. [2023-12-20 14:45:28,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:45:28,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 92 [2023-12-20 14:45:28,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:28,077 INFO L225 Difference]: With dead ends: 1349 [2023-12-20 14:45:28,077 INFO L226 Difference]: Without dead ends: 354 [2023-12-20 14:45:28,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 14:45:28,079 INFO L413 NwaCegarLoop]: 644 mSDtfsCounter, 55 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:28,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 1232 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:45:28,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2023-12-20 14:45:28,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 354. [2023-12-20 14:45:28,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 319 states have (on average 1.6394984326018809) internal successors, (523), 321 states have internal predecessors, (523), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-20 14:45:28,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 577 transitions. [2023-12-20 14:45:28,092 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 577 transitions. Word has length 92 [2023-12-20 14:45:28,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:28,092 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 577 transitions. [2023-12-20 14:45:28,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-20 14:45:28,093 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 577 transitions. [2023-12-20 14:45:28,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 14:45:28,094 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:28,094 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:45:28,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 14:45:28,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:45:28,304 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:28,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:28,304 INFO L85 PathProgramCache]: Analyzing trace with hash -719527066, now seen corresponding path program 1 times [2023-12-20 14:45:28,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:28,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229299822] [2023-12-20 14:45:28,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:28,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:28,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:28,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:45:28,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:28,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:45:28,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:28,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 14:45:28,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:28,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 14:45:28,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:28,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 14:45:28,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:28,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:28,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:28,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229299822] [2023-12-20 14:45:28,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229299822] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:28,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:28,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 14:45:28,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887576317] [2023-12-20 14:45:28,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:28,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 14:45:28,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:28,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 14:45:28,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 14:45:28,496 INFO L87 Difference]: Start difference. First operand 354 states and 577 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:30,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:30,113 INFO L93 Difference]: Finished difference Result 833 states and 1380 transitions. [2023-12-20 14:45:30,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 14:45:30,113 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 14:45:30,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:30,116 INFO L225 Difference]: With dead ends: 833 [2023-12-20 14:45:30,116 INFO L226 Difference]: Without dead ends: 484 [2023-12-20 14:45:30,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:45:30,117 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 991 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:30,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1015 Valid, 651 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 14:45:30,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2023-12-20 14:45:30,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 354. [2023-12-20 14:45:30,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 319 states have (on average 1.6363636363636365) internal successors, (522), 321 states have internal predecessors, (522), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-20 14:45:30,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 576 transitions. [2023-12-20 14:45:30,136 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 576 transitions. Word has length 162 [2023-12-20 14:45:30,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:30,136 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 576 transitions. [2023-12-20 14:45:30,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:30,136 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 576 transitions. [2023-12-20 14:45:30,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 14:45:30,137 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:30,138 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:45:30,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 14:45:30,138 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:30,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:30,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1700481880, now seen corresponding path program 1 times [2023-12-20 14:45:30,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:30,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890719890] [2023-12-20 14:45:30,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:30,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:30,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:30,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:45:30,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:30,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:45:30,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:30,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 14:45:30,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:30,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 14:45:30,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:30,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 14:45:30,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:30,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:30,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:30,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890719890] [2023-12-20 14:45:30,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890719890] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:30,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:30,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:45:30,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222755803] [2023-12-20 14:45:30,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:30,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:45:30,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:30,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:45:30,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:45:30,366 INFO L87 Difference]: Start difference. First operand 354 states and 576 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:32,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:32,807 INFO L93 Difference]: Finished difference Result 855 states and 1427 transitions. [2023-12-20 14:45:32,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 14:45:32,810 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 14:45:32,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:32,813 INFO L225 Difference]: With dead ends: 855 [2023-12-20 14:45:32,813 INFO L226 Difference]: Without dead ends: 514 [2023-12-20 14:45:32,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-12-20 14:45:32,815 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 1100 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 2111 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1127 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 2174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:32,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1127 Valid, 1173 Invalid, 2174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 2111 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-20 14:45:32,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2023-12-20 14:45:32,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 356. [2023-12-20 14:45:32,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 321 states have (on average 1.6292834890965733) internal successors, (523), 323 states have internal predecessors, (523), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-20 14:45:32,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 577 transitions. [2023-12-20 14:45:32,853 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 577 transitions. Word has length 162 [2023-12-20 14:45:32,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:32,853 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 577 transitions. [2023-12-20 14:45:32,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:32,854 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 577 transitions. [2023-12-20 14:45:32,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 14:45:32,856 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:32,856 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:45:32,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 14:45:32,856 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:32,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:32,857 INFO L85 PathProgramCache]: Analyzing trace with hash -481894232, now seen corresponding path program 1 times [2023-12-20 14:45:32,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:32,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539303178] [2023-12-20 14:45:32,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:32,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:32,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:32,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:45:32,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:33,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:45:33,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:33,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 14:45:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:33,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 14:45:33,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:33,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 14:45:33,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:33,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:33,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:33,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539303178] [2023-12-20 14:45:33,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539303178] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:33,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:33,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 14:45:33,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466549685] [2023-12-20 14:45:33,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:33,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 14:45:33,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:33,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 14:45:33,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 14:45:33,147 INFO L87 Difference]: Start difference. First operand 356 states and 577 transitions. Second operand has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:35,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:35,910 INFO L93 Difference]: Finished difference Result 1313 states and 2175 transitions. [2023-12-20 14:45:35,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 14:45:35,910 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 14:45:35,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:35,916 INFO L225 Difference]: With dead ends: 1313 [2023-12-20 14:45:35,916 INFO L226 Difference]: Without dead ends: 976 [2023-12-20 14:45:35,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:45:35,918 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 1492 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 2302 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 2418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:35,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1511 Valid, 1097 Invalid, 2418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2302 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-20 14:45:35,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2023-12-20 14:45:35,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 711. [2023-12-20 14:45:35,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 648 states have (on average 1.6404320987654322) internal successors, (1063), 651 states have internal predecessors, (1063), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2023-12-20 14:45:35,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 1162 transitions. [2023-12-20 14:45:35,974 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 1162 transitions. Word has length 162 [2023-12-20 14:45:35,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:35,974 INFO L495 AbstractCegarLoop]: Abstraction has 711 states and 1162 transitions. [2023-12-20 14:45:35,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:35,975 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 1162 transitions. [2023-12-20 14:45:35,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 14:45:35,976 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:35,976 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:45:35,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 14:45:35,977 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:35,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:35,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1607704680, now seen corresponding path program 1 times [2023-12-20 14:45:35,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:35,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729638738] [2023-12-20 14:45:35,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:35,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:35,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:36,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:45:36,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:36,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:45:36,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:36,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 14:45:36,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:36,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 14:45:36,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:36,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 14:45:36,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:36,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:36,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:36,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729638738] [2023-12-20 14:45:36,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729638738] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:36,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:36,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:45:36,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665346012] [2023-12-20 14:45:36,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:36,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:45:36,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:36,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:45:36,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:45:36,297 INFO L87 Difference]: Start difference. First operand 711 states and 1162 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:40,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:40,184 INFO L93 Difference]: Finished difference Result 2174 states and 3607 transitions. [2023-12-20 14:45:40,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:45:40,184 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 14:45:40,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:40,191 INFO L225 Difference]: With dead ends: 2174 [2023-12-20 14:45:40,191 INFO L226 Difference]: Without dead ends: 1482 [2023-12-20 14:45:40,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:45:40,194 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 1525 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 3747 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 2097 SdHoareTripleChecker+Invalid, 3812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:40,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1544 Valid, 2097 Invalid, 3812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3747 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-20 14:45:40,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2023-12-20 14:45:40,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1039. [2023-12-20 14:45:40,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1039 states, 948 states have (on average 1.6339662447257384) internal successors, (1549), 952 states have internal predecessors, (1549), 70 states have call successors, (70), 19 states have call predecessors, (70), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2023-12-20 14:45:40,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1692 transitions. [2023-12-20 14:45:40,247 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1692 transitions. Word has length 162 [2023-12-20 14:45:40,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:40,247 INFO L495 AbstractCegarLoop]: Abstraction has 1039 states and 1692 transitions. [2023-12-20 14:45:40,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:40,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1692 transitions. [2023-12-20 14:45:40,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 14:45:40,249 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:40,249 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:45:40,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 14:45:40,250 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:40,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:40,250 INFO L85 PathProgramCache]: Analyzing trace with hash 2018315046, now seen corresponding path program 1 times [2023-12-20 14:45:40,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:40,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784924655] [2023-12-20 14:45:40,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:40,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:40,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:40,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:45:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:40,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:45:40,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:40,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 14:45:40,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:40,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 14:45:40,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:40,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 14:45:40,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:40,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:40,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:40,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784924655] [2023-12-20 14:45:40,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784924655] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:40,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:40,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:45:40,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548556319] [2023-12-20 14:45:40,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:40,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:45:40,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:40,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:45:40,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:45:40,555 INFO L87 Difference]: Start difference. First operand 1039 states and 1692 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:44,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:44,241 INFO L93 Difference]: Finished difference Result 3437 states and 5693 transitions. [2023-12-20 14:45:44,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:45:44,242 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 14:45:44,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:44,253 INFO L225 Difference]: With dead ends: 3437 [2023-12-20 14:45:44,253 INFO L226 Difference]: Without dead ends: 2417 [2023-12-20 14:45:44,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:45:44,256 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 1523 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 3743 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1542 SdHoareTripleChecker+Valid, 2095 SdHoareTripleChecker+Invalid, 3810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:44,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1542 Valid, 2095 Invalid, 3810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3743 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 14:45:44,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2417 states. [2023-12-20 14:45:44,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2417 to 1696. [2023-12-20 14:45:44,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1696 states, 1549 states have (on average 1.6281471917366042) internal successors, (2522), 1555 states have internal predecessors, (2522), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2023-12-20 14:45:44,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1696 states to 1696 states and 2757 transitions. [2023-12-20 14:45:44,344 INFO L78 Accepts]: Start accepts. Automaton has 1696 states and 2757 transitions. Word has length 162 [2023-12-20 14:45:44,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:44,344 INFO L495 AbstractCegarLoop]: Abstraction has 1696 states and 2757 transitions. [2023-12-20 14:45:44,344 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) [2023-12-20 14:45:44,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1696 states and 2757 transitions. [2023-12-20 14:45:44,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 14:45:44,346 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:44,346 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] [2023-12-20 14:45:44,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 14:45:44,347 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:44,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:44,347 INFO L85 PathProgramCache]: Analyzing trace with hash 230445224, now seen corresponding path program 1 times [2023-12-20 14:45:44,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:44,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363299230] [2023-12-20 14:45:44,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:44,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:44,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:44,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:45:44,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:44,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:45:44,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:44,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 14:45:44,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:44,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 14:45:44,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:44,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 14:45:44,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:44,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:44,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:44,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363299230] [2023-12-20 14:45:44,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363299230] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:44,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:44,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:45:44,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246773325] [2023-12-20 14:45:44,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:44,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:45:44,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:44,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:45:44,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:45:44,613 INFO L87 Difference]: Start difference. First operand 1696 states and 2757 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:46,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:46,472 INFO L93 Difference]: Finished difference Result 4082 states and 6749 transitions. [2023-12-20 14:45:46,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 14:45:46,472 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 14:45:46,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:46,482 INFO L225 Difference]: With dead ends: 4082 [2023-12-20 14:45:46,483 INFO L226 Difference]: Without dead ends: 2405 [2023-12-20 14:45:46,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:45:46,487 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 1091 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 1913 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1111 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 1982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:46,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1111 Valid, 1071 Invalid, 1982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1913 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 14:45:46,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2405 states. [2023-12-20 14:45:46,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2405 to 1696. [2023-12-20 14:45:46,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1696 states, 1549 states have (on average 1.6249193027759845) internal successors, (2517), 1555 states have internal predecessors, (2517), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2023-12-20 14:45:46,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1696 states to 1696 states and 2752 transitions. [2023-12-20 14:45:46,584 INFO L78 Accepts]: Start accepts. Automaton has 1696 states and 2752 transitions. Word has length 162 [2023-12-20 14:45:46,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:46,585 INFO L495 AbstractCegarLoop]: Abstraction has 1696 states and 2752 transitions. [2023-12-20 14:45:46,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:46,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1696 states and 2752 transitions. [2023-12-20 14:45:46,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 14:45:46,587 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:46,587 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:45:46,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 14:45:46,587 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:46,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:46,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1905437978, now seen corresponding path program 1 times [2023-12-20 14:45:46,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:46,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315380317] [2023-12-20 14:45:46,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:46,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:46,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:46,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:45:46,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:46,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:45:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:46,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 14:45:46,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:46,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 14:45:46,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:46,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 14:45:46,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:46,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:46,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:46,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315380317] [2023-12-20 14:45:46,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315380317] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:46,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:46,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:45:46,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191303471] [2023-12-20 14:45:46,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:46,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:45:46,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:46,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:45:46,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:45:46,838 INFO L87 Difference]: Start difference. First operand 1696 states and 2752 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:48,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:48,673 INFO L93 Difference]: Finished difference Result 4076 states and 6723 transitions. [2023-12-20 14:45:48,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 14:45:48,676 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 14:45:48,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:48,688 INFO L225 Difference]: With dead ends: 4076 [2023-12-20 14:45:48,688 INFO L226 Difference]: Without dead ends: 2399 [2023-12-20 14:45:48,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:45:48,695 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 1180 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 1759 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1200 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 1829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:48,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1200 Valid, 1070 Invalid, 1829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1759 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 14:45:48,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2399 states. [2023-12-20 14:45:48,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2399 to 1696. [2023-12-20 14:45:48,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1696 states, 1549 states have (on average 1.6216914138153649) internal successors, (2512), 1555 states have internal predecessors, (2512), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2023-12-20 14:45:48,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1696 states to 1696 states and 2747 transitions. [2023-12-20 14:45:48,801 INFO L78 Accepts]: Start accepts. Automaton has 1696 states and 2747 transitions. Word has length 162 [2023-12-20 14:45:48,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:48,802 INFO L495 AbstractCegarLoop]: Abstraction has 1696 states and 2747 transitions. [2023-12-20 14:45:48,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:48,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1696 states and 2747 transitions. [2023-12-20 14:45:48,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 14:45:48,804 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:48,804 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:45:48,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 14:45:48,804 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:48,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:48,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1835790104, now seen corresponding path program 1 times [2023-12-20 14:45:48,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:48,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096329070] [2023-12-20 14:45:48,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:48,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:48,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:48,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:45:48,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:48,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:45:48,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:49,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 14:45:49,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:49,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 14:45:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:49,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 14:45:49,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:49,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:49,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:49,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096329070] [2023-12-20 14:45:49,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096329070] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:49,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:49,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:45:49,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524985595] [2023-12-20 14:45:49,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:49,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:45:49,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:49,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:45:49,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:45:49,075 INFO L87 Difference]: Start difference. First operand 1696 states and 2747 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:52,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:52,768 INFO L93 Difference]: Finished difference Result 5839 states and 9590 transitions. [2023-12-20 14:45:52,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:45:52,772 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 14:45:52,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:52,788 INFO L225 Difference]: With dead ends: 5839 [2023-12-20 14:45:52,788 INFO L226 Difference]: Without dead ends: 4162 [2023-12-20 14:45:52,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:45:52,793 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 1509 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 3662 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 2095 SdHoareTripleChecker+Invalid, 3729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:52,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1528 Valid, 2095 Invalid, 3729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3662 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 14:45:52,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4162 states. [2023-12-20 14:45:52,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4162 to 3024. [2023-12-20 14:45:52,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3024 states, 2765 states have (on average 1.616636528028933) internal successors, (4470), 2775 states have internal predecessors, (4470), 196 states have call successors, (196), 55 states have call predecessors, (196), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2023-12-20 14:45:52,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3024 states to 3024 states and 4895 transitions. [2023-12-20 14:45:52,983 INFO L78 Accepts]: Start accepts. Automaton has 3024 states and 4895 transitions. Word has length 162 [2023-12-20 14:45:52,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:52,984 INFO L495 AbstractCegarLoop]: Abstraction has 3024 states and 4895 transitions. [2023-12-20 14:45:52,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:52,985 INFO L276 IsEmpty]: Start isEmpty. Operand 3024 states and 4895 transitions. [2023-12-20 14:45:52,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 14:45:52,987 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:52,987 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:45:52,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 14:45:52,987 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:52,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:52,988 INFO L85 PathProgramCache]: Analyzing trace with hash -436836502, now seen corresponding path program 1 times [2023-12-20 14:45:52,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:52,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472289266] [2023-12-20 14:45:52,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:52,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:53,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:53,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:45:53,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:53,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:45:53,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:53,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 14:45:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:53,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 14:45:53,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:53,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 14:45:53,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:53,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:53,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:53,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472289266] [2023-12-20 14:45:53,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472289266] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:53,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:53,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:45:53,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520938923] [2023-12-20 14:45:53,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:53,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:45:53,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:53,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:45:53,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:45:53,251 INFO L87 Difference]: Start difference. First operand 3024 states and 4895 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:54,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:54,824 INFO L93 Difference]: Finished difference Result 7190 states and 11811 transitions. [2023-12-20 14:45:54,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 14:45:54,824 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 14:45:54,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:54,839 INFO L225 Difference]: With dead ends: 7190 [2023-12-20 14:45:54,839 INFO L226 Difference]: Without dead ends: 4185 [2023-12-20 14:45:54,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:45:54,848 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 1245 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 1679 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1265 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 1776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:54,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1265 Valid, 900 Invalid, 1776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1679 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 14:45:54,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4185 states. [2023-12-20 14:45:55,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4185 to 3024. [2023-12-20 14:45:55,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3024 states, 2765 states have (on average 1.613381555153707) internal successors, (4461), 2775 states have internal predecessors, (4461), 196 states have call successors, (196), 55 states have call predecessors, (196), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2023-12-20 14:45:55,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3024 states to 3024 states and 4886 transitions. [2023-12-20 14:45:55,048 INFO L78 Accepts]: Start accepts. Automaton has 3024 states and 4886 transitions. Word has length 162 [2023-12-20 14:45:55,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:55,048 INFO L495 AbstractCegarLoop]: Abstraction has 3024 states and 4886 transitions. [2023-12-20 14:45:55,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:55,049 INFO L276 IsEmpty]: Start isEmpty. Operand 3024 states and 4886 transitions. [2023-12-20 14:45:55,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 14:45:55,051 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:55,051 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:45:55,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 14:45:55,053 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:55,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:55,053 INFO L85 PathProgramCache]: Analyzing trace with hash -2054276952, now seen corresponding path program 1 times [2023-12-20 14:45:55,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:55,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930895082] [2023-12-20 14:45:55,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:55,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:55,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:55,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:45:55,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:55,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:45:55,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:55,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 14:45:55,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:55,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 14:45:55,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:55,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 14:45:55,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:55,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:55,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:55,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930895082] [2023-12-20 14:45:55,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930895082] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:55,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:55,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:45:55,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166039172] [2023-12-20 14:45:55,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:55,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:45:55,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:55,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:45:55,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:45:55,291 INFO L87 Difference]: Start difference. First operand 3024 states and 4886 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:58,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:58,861 INFO L93 Difference]: Finished difference Result 10671 states and 17456 transitions. [2023-12-20 14:45:58,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:45:58,861 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 14:45:58,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:58,886 INFO L225 Difference]: With dead ends: 10671 [2023-12-20 14:45:58,887 INFO L226 Difference]: Without dead ends: 7666 [2023-12-20 14:45:58,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:45:58,896 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 1501 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 3624 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 2095 SdHoareTripleChecker+Invalid, 3691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:58,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1520 Valid, 2095 Invalid, 3691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3624 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 14:45:58,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7666 states. [2023-12-20 14:45:59,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7666 to 5690. [2023-12-20 14:45:59,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5690 states, 5207 states have (on average 1.608795851738045) internal successors, (8377), 5225 states have internal predecessors, (8377), 364 states have call successors, (364), 103 states have call predecessors, (364), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2023-12-20 14:45:59,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5690 states to 5690 states and 9200 transitions. [2023-12-20 14:45:59,271 INFO L78 Accepts]: Start accepts. Automaton has 5690 states and 9200 transitions. Word has length 162 [2023-12-20 14:45:59,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:59,272 INFO L495 AbstractCegarLoop]: Abstraction has 5690 states and 9200 transitions. [2023-12-20 14:45:59,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:59,272 INFO L276 IsEmpty]: Start isEmpty. Operand 5690 states and 9200 transitions. [2023-12-20 14:45:59,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 14:45:59,276 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:59,277 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:45:59,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 14:45:59,277 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:59,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:59,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1690810454, now seen corresponding path program 1 times [2023-12-20 14:45:59,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:59,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755807361] [2023-12-20 14:45:59,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:59,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:59,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:59,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:45:59,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:59,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:45:59,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:59,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 14:45:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:59,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 14:45:59,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:59,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 14:45:59,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:59,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:59,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:59,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755807361] [2023-12-20 14:45:59,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755807361] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:59,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:59,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:45:59,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146564027] [2023-12-20 14:45:59,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:59,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:45:59,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:59,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:45:59,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:45:59,534 INFO L87 Difference]: Start difference. First operand 5690 states and 9200 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:46:03,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:46:03,359 INFO L93 Difference]: Finished difference Result 20351 states and 33320 transitions. [2023-12-20 14:46:03,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:46:03,369 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 14:46:03,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:46:03,444 INFO L225 Difference]: With dead ends: 20351 [2023-12-20 14:46:03,445 INFO L226 Difference]: Without dead ends: 14680 [2023-12-20 14:46:03,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:46:03,473 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 1500 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 3611 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1519 SdHoareTripleChecker+Valid, 2095 SdHoareTripleChecker+Invalid, 3678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:46:03,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1519 Valid, 2095 Invalid, 3678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3611 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 14:46:03,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14680 states. [2023-12-20 14:46:04,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14680 to 11035. [2023-12-20 14:46:04,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11035 states, 10104 states have (on average 1.6059976247030878) internal successors, (16227), 10138 states have internal predecessors, (16227), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2023-12-20 14:46:04,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11035 states to 11035 states and 17900 transitions. [2023-12-20 14:46:04,100 INFO L78 Accepts]: Start accepts. Automaton has 11035 states and 17900 transitions. Word has length 162 [2023-12-20 14:46:04,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:46:04,100 INFO L495 AbstractCegarLoop]: Abstraction has 11035 states and 17900 transitions. [2023-12-20 14:46:04,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:46:04,101 INFO L276 IsEmpty]: Start isEmpty. Operand 11035 states and 17900 transitions. [2023-12-20 14:46:04,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 14:46:04,109 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:46:04,109 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:46:04,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 14:46:04,110 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:46:04,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:46:04,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1401991064, now seen corresponding path program 1 times [2023-12-20 14:46:04,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:46:04,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726329105] [2023-12-20 14:46:04,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:46:04,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:46:04,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:04,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:46:04,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:04,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:46:04,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:04,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 14:46:04,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:04,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 14:46:04,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:04,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 14:46:04,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:04,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:46:04,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:46:04,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726329105] [2023-12-20 14:46:04,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726329105] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:46:04,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:46:04,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:46:04,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319410232] [2023-12-20 14:46:04,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:46:04,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:46:04,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:46:04,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:46:04,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:46:04,347 INFO L87 Difference]: Start difference. First operand 11035 states and 17900 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:46:08,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:46:08,590 INFO L93 Difference]: Finished difference Result 39710 states and 65238 transitions. [2023-12-20 14:46:08,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:46:08,592 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 14:46:08,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:46:08,705 INFO L225 Difference]: With dead ends: 39710 [2023-12-20 14:46:08,706 INFO L226 Difference]: Without dead ends: 28694 [2023-12-20 14:46:08,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:46:08,748 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 1499 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 3598 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1518 SdHoareTripleChecker+Valid, 2095 SdHoareTripleChecker+Invalid, 3665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:46:08,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1518 Valid, 2095 Invalid, 3665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3598 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 14:46:08,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28694 states. [2023-12-20 14:46:10,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28694 to 21756. [2023-12-20 14:46:10,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21756 states, 19929 states have (on average 1.6043454262632344) internal successors, (31973), 19995 states have internal predecessors, (31973), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2023-12-20 14:46:10,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21756 states to 21756 states and 35508 transitions. [2023-12-20 14:46:10,221 INFO L78 Accepts]: Start accepts. Automaton has 21756 states and 35508 transitions. Word has length 162 [2023-12-20 14:46:10,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:46:10,222 INFO L495 AbstractCegarLoop]: Abstraction has 21756 states and 35508 transitions. [2023-12-20 14:46:10,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:46:10,222 INFO L276 IsEmpty]: Start isEmpty. Operand 21756 states and 35508 transitions. [2023-12-20 14:46:10,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 14:46:10,236 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:46:10,237 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:46:10,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 14:46:10,237 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:46:10,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:46:10,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1946863638, now seen corresponding path program 1 times [2023-12-20 14:46:10,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:46:10,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857315863] [2023-12-20 14:46:10,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:46:10,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:46:10,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:10,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:46:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:10,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:46:10,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:10,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 14:46:10,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:10,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 14:46:10,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:10,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 14:46:10,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:10,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:46:10,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:46:10,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857315863] [2023-12-20 14:46:10,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857315863] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:46:10,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:46:10,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:46:10,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489600779] [2023-12-20 14:46:10,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:46:10,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:46:10,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:46:10,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:46:10,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:46:10,489 INFO L87 Difference]: Start difference. First operand 21756 states and 35508 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:46:13,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:46:13,057 INFO L93 Difference]: Finished difference Result 50862 states and 84354 transitions. [2023-12-20 14:46:13,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 14:46:13,058 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 14:46:13,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:46:13,182 INFO L225 Difference]: With dead ends: 50862 [2023-12-20 14:46:13,182 INFO L226 Difference]: Without dead ends: 29125 [2023-12-20 14:46:13,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:46:13,241 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 1246 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 1641 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1266 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 1738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 14:46:13,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1266 Valid, 900 Invalid, 1738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1641 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 14:46:13,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29125 states. [2023-12-20 14:46:14,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29125 to 21756. [2023-12-20 14:46:14,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21756 states, 19929 states have (on average 1.6010838476591902) internal successors, (31908), 19995 states have internal predecessors, (31908), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2023-12-20 14:46:14,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21756 states to 21756 states and 35443 transitions. [2023-12-20 14:46:14,421 INFO L78 Accepts]: Start accepts. Automaton has 21756 states and 35443 transitions. Word has length 162 [2023-12-20 14:46:14,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:46:14,422 INFO L495 AbstractCegarLoop]: Abstraction has 21756 states and 35443 transitions. [2023-12-20 14:46:14,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:46:14,422 INFO L276 IsEmpty]: Start isEmpty. Operand 21756 states and 35443 transitions. [2023-12-20 14:46:14,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 14:46:14,435 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:46:14,435 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:46:14,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 14:46:14,436 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:46:14,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:46:14,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1271703512, now seen corresponding path program 1 times [2023-12-20 14:46:14,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:46:14,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956371935] [2023-12-20 14:46:14,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:46:14,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:46:14,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:14,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:46:14,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:14,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:46:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:14,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 14:46:14,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:14,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 14:46:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:14,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 14:46:14,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:14,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:46:14,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:46:14,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956371935] [2023-12-20 14:46:14,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956371935] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:46:14,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:46:14,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:46:14,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783489618] [2023-12-20 14:46:14,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:46:14,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:46:14,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:46:14,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:46:14,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:46:14,888 INFO L87 Difference]: Start difference. First operand 21756 states and 35443 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:46:17,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:46:17,378 INFO L93 Difference]: Finished difference Result 50796 states and 84027 transitions. [2023-12-20 14:46:17,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 14:46:17,379 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 14:46:17,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:46:17,491 INFO L225 Difference]: With dead ends: 50796 [2023-12-20 14:46:17,492 INFO L226 Difference]: Without dead ends: 29059 [2023-12-20 14:46:17,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:46:17,557 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 1304 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 1565 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1324 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 1663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 14:46:17,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1324 Valid, 899 Invalid, 1663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1565 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 14:46:17,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29059 states. [2023-12-20 14:46:18,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29059 to 21756. [2023-12-20 14:46:18,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21756 states, 19929 states have (on average 1.5978222690551458) internal successors, (31843), 19995 states have internal predecessors, (31843), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2023-12-20 14:46:18,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21756 states to 21756 states and 35378 transitions. [2023-12-20 14:46:18,848 INFO L78 Accepts]: Start accepts. Automaton has 21756 states and 35378 transitions. Word has length 162 [2023-12-20 14:46:18,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:46:18,849 INFO L495 AbstractCegarLoop]: Abstraction has 21756 states and 35378 transitions. [2023-12-20 14:46:18,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:46:18,849 INFO L276 IsEmpty]: Start isEmpty. Operand 21756 states and 35378 transitions. [2023-12-20 14:46:18,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 14:46:18,863 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:46:18,863 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:46:18,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 14:46:18,863 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:46:18,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:46:18,864 INFO L85 PathProgramCache]: Analyzing trace with hash 2075211818, now seen corresponding path program 1 times [2023-12-20 14:46:18,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:46:18,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663718770] [2023-12-20 14:46:18,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:46:18,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:46:18,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:18,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:46:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:19,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:46:19,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:19,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 14:46:19,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:19,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 14:46:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:19,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 14:46:19,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:19,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:46:19,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:46:19,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663718770] [2023-12-20 14:46:19,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663718770] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:46:19,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:46:19,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:46:19,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849638445] [2023-12-20 14:46:19,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:46:19,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:46:19,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:46:19,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:46:19,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:46:19,092 INFO L87 Difference]: Start difference. First operand 21756 states and 35378 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:46:24,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:46:24,996 INFO L93 Difference]: Finished difference Result 87511 states and 143674 transitions. [2023-12-20 14:46:24,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:46:24,997 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 14:46:24,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:46:25,220 INFO L225 Difference]: With dead ends: 87511 [2023-12-20 14:46:25,220 INFO L226 Difference]: Without dead ends: 65774 [2023-12-20 14:46:25,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:46:25,279 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 1586 mSDsluCounter, 1605 mSDsCounter, 0 mSdLazyCounter, 4182 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1604 SdHoareTripleChecker+Valid, 2084 SdHoareTripleChecker+Invalid, 4251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 4182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:46:25,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1604 Valid, 2084 Invalid, 4251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 4182 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-20 14:46:25,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65774 states. [2023-12-20 14:46:28,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65774 to 42688. [2023-12-20 14:46:28,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42688 states, 39133 states have (on average 1.5932077786011807) internal successors, (62347), 39263 states have internal predecessors, (62347), 2652 states have call successors, (2652), 775 states have call predecessors, (2652), 902 states have return successors, (4965), 2777 states have call predecessors, (4965), 2650 states have call successors, (4965) [2023-12-20 14:46:28,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42688 states to 42688 states and 69964 transitions. [2023-12-20 14:46:28,191 INFO L78 Accepts]: Start accepts. Automaton has 42688 states and 69964 transitions. Word has length 162 [2023-12-20 14:46:28,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:46:28,192 INFO L495 AbstractCegarLoop]: Abstraction has 42688 states and 69964 transitions. [2023-12-20 14:46:28,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:46:28,192 INFO L276 IsEmpty]: Start isEmpty. Operand 42688 states and 69964 transitions. [2023-12-20 14:46:28,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 14:46:28,215 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:46:28,216 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:46:28,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 14:46:28,216 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:46:28,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:46:28,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1640706220, now seen corresponding path program 1 times [2023-12-20 14:46:28,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:46:28,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182020338] [2023-12-20 14:46:28,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:46:28,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:46:28,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:28,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:46:28,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:28,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:46:28,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:28,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 14:46:28,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:28,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 14:46:28,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:28,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 14:46:28,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:28,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:46:28,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:46:28,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182020338] [2023-12-20 14:46:28,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182020338] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:46:28,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:46:28,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:46:28,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206609121] [2023-12-20 14:46:28,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:46:28,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:46:28,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:46:28,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:46:28,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:46:28,452 INFO L87 Difference]: Start difference. First operand 42688 states and 69964 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:46:35,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:46:35,650 INFO L93 Difference]: Finished difference Result 170521 states and 282214 transitions. [2023-12-20 14:46:35,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:46:35,651 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 14:46:35,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:46:36,358 INFO L225 Difference]: With dead ends: 170521 [2023-12-20 14:46:36,359 INFO L226 Difference]: Without dead ends: 127852 [2023-12-20 14:46:36,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:46:36,472 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 1849 mSDsluCounter, 1608 mSDsCounter, 0 mSdLazyCounter, 3493 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1881 SdHoareTripleChecker+Valid, 2088 SdHoareTripleChecker+Invalid, 3563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 3493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-20 14:46:36,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1881 Valid, 2088 Invalid, 3563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 3493 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-20 14:46:36,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127852 states. [2023-12-20 14:46:41,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127852 to 85185. [2023-12-20 14:46:41,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85185 states, 78238 states have (on average 1.5928449091234438) internal successors, (124621), 78496 states have internal predecessors, (124621), 5148 states have call successors, (5148), 1543 states have call predecessors, (5148), 1798 states have return successors, (11963), 5401 states have call predecessors, (11963), 5146 states have call successors, (11963) [2023-12-20 14:46:41,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85185 states to 85185 states and 141732 transitions. [2023-12-20 14:46:41,623 INFO L78 Accepts]: Start accepts. Automaton has 85185 states and 141732 transitions. Word has length 162 [2023-12-20 14:46:41,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:46:41,624 INFO L495 AbstractCegarLoop]: Abstraction has 85185 states and 141732 transitions. [2023-12-20 14:46:41,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:46:41,624 INFO L276 IsEmpty]: Start isEmpty. Operand 85185 states and 141732 transitions. [2023-12-20 14:46:41,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 14:46:41,668 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:46:41,668 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:46:41,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-20 14:46:41,668 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:46:41,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:46:41,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1211047914, now seen corresponding path program 1 times [2023-12-20 14:46:41,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:46:41,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693830120] [2023-12-20 14:46:41,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:46:41,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:46:41,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:41,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:46:41,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:41,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:46:41,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:42,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 14:46:42,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:42,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 14:46:42,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:42,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 14:46:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:42,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:46:42,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:46:42,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693830120] [2023-12-20 14:46:42,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693830120] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:46:42,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:46:42,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:46:42,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299502681] [2023-12-20 14:46:42,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:46:42,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:46:42,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:46:42,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:46:42,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:46:42,085 INFO L87 Difference]: Start difference. First operand 85185 states and 141732 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:46:53,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:46:53,233 INFO L93 Difference]: Finished difference Result 336408 states and 565116 transitions. [2023-12-20 14:46:53,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:46:53,234 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 14:46:53,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:46:54,256 INFO L225 Difference]: With dead ends: 336408 [2023-12-20 14:46:54,256 INFO L226 Difference]: Without dead ends: 251242 [2023-12-20 14:46:54,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:46:54,637 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 1567 mSDsluCounter, 1608 mSDsCounter, 0 mSdLazyCounter, 4065 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 2088 SdHoareTripleChecker+Invalid, 4134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 4065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:46:54,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1585 Valid, 2088 Invalid, 4134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 4065 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-20 14:46:54,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251242 states. [2023-12-20 14:47:03,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251242 to 170178. [2023-12-20 14:47:03,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170178 states, 156575 states have (on average 1.5929937729522592) internal successors, (249423), 157089 states have internal predecessors, (249423), 10012 states have call successors, (10012), 3079 states have call predecessors, (10012), 3590 states have return successors, (30205), 10521 states have call predecessors, (30205), 10010 states have call successors, (30205) [2023-12-20 14:47:04,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170178 states to 170178 states and 289640 transitions. [2023-12-20 14:47:04,799 INFO L78 Accepts]: Start accepts. Automaton has 170178 states and 289640 transitions. Word has length 162 [2023-12-20 14:47:04,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:47:04,799 INFO L495 AbstractCegarLoop]: Abstraction has 170178 states and 289640 transitions. [2023-12-20 14:47:04,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:47:04,800 INFO L276 IsEmpty]: Start isEmpty. Operand 170178 states and 289640 transitions. [2023-12-20 14:47:04,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 14:47:04,858 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:47:04,858 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:47:04,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-20 14:47:04,858 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:47:04,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:47:04,859 INFO L85 PathProgramCache]: Analyzing trace with hash 504451308, now seen corresponding path program 1 times [2023-12-20 14:47:04,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:47:04,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470107592] [2023-12-20 14:47:04,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:47:04,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:47:04,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:04,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:47:04,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:05,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:47:05,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:05,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 14:47:05,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:05,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 14:47:05,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:05,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 14:47:05,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:05,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:47:05,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:47:05,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470107592] [2023-12-20 14:47:05,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470107592] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:47:05,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:47:05,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:47:05,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237610110] [2023-12-20 14:47:05,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:47:05,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:47:05,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:47:05,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:47:05,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:47:05,130 INFO L87 Difference]: Start difference. First operand 170178 states and 289640 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:47:23,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:47:23,594 INFO L93 Difference]: Finished difference Result 664343 states and 1141762 transitions. [2023-12-20 14:47:23,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:47:23,595 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-20 14:47:23,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:47:26,472 INFO L225 Difference]: With dead ends: 664343 [2023-12-20 14:47:26,473 INFO L226 Difference]: Without dead ends: 494184 [2023-12-20 14:47:27,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:47:27,120 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 1777 mSDsluCounter, 1608 mSDsCounter, 0 mSdLazyCounter, 3467 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1809 SdHoareTripleChecker+Valid, 2088 SdHoareTripleChecker+Invalid, 3537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 3467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:47:27,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1809 Valid, 2088 Invalid, 3537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 3467 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 14:47:27,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494184 states. [2023-12-20 14:47:44,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494184 to 340163. [2023-12-20 14:47:45,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340163 states, 313504 states have (on average 1.5933991272838623) internal successors, (499537), 314530 states have internal predecessors, (499537), 19484 states have call successors, (19484), 6151 states have call predecessors, (19484), 7174 states have return successors, (79555), 20505 states have call predecessors, (79555), 19482 states have call successors, (79555) [2023-12-20 14:47:48,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340163 states to 340163 states and 598576 transitions. [2023-12-20 14:47:48,030 INFO L78 Accepts]: Start accepts. Automaton has 340163 states and 598576 transitions. Word has length 162 [2023-12-20 14:47:48,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:47:48,030 INFO L495 AbstractCegarLoop]: Abstraction has 340163 states and 598576 transitions. [2023-12-20 14:47:48,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:47:48,031 INFO L276 IsEmpty]: Start isEmpty. Operand 340163 states and 598576 transitions. [2023-12-20 14:47:48,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 14:47:48,181 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:47:48,181 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:47:48,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-20 14:47:48,181 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:47:48,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:47:48,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1451489194, now seen corresponding path program 1 times [2023-12-20 14:47:48,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:47:48,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212250266] [2023-12-20 14:47:48,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:47:48,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:47:48,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:48,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:47:48,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:48,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:47:48,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:48,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 14:47:48,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:48,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 14:47:48,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:48,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 14:47:48,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:48,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:47:48,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:47:48,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212250266] [2023-12-20 14:47:48,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212250266] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:47:48,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:47:48,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:47:48,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379920213] [2023-12-20 14:47:48,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:47:48,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:47:48,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:47:48,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:47:48,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:47:48,395 INFO L87 Difference]: Start difference. First operand 340163 states and 598576 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)