/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.15.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 01:33:04,887 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 01:33:04,948 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 01:33:04,951 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 01:33:04,952 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 01:33:04,989 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 01:33:04,990 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 01:33:04,990 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 01:33:04,991 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 01:33:04,991 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 01:33:04,991 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 01:33:04,991 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 01:33:04,992 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 01:33:04,992 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 01:33:04,992 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 01:33:04,992 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 01:33:04,993 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 01:33:04,993 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 01:33:04,993 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 01:33:04,993 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 01:33:04,994 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 01:33:04,994 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 01:33:04,994 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 01:33:04,994 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 01:33:04,995 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 01:33:04,995 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 01:33:04,995 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 01:33:04,995 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 01:33:04,995 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 01:33:04,996 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 01:33:04,996 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 01:33:04,996 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 01:33:04,996 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:33:04,996 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 01:33:04,997 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 01:33:04,997 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 01:33:04,997 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 01:33:04,997 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 01:33:04,997 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 01:33:04,997 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 01:33:04,998 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 01:33:04,998 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 01:33:04,998 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 01:33:04,998 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 01:33:05,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 01:33:05,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 01:33:05,289 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 01:33:05,290 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 01:33:05,292 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 01:33:05,293 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.15.cil.c [2023-12-19 01:33:06,552 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 01:33:06,825 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 01:33:06,826 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.15.cil.c [2023-12-19 01:33:06,850 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e608a01b/a8f72914d9da4ce09fca235bc99d3719/FLAG5c1602717 [2023-12-19 01:33:06,862 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e608a01b/a8f72914d9da4ce09fca235bc99d3719 [2023-12-19 01:33:06,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 01:33:06,866 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 01:33:06,868 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 01:33:06,869 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 01:33:06,879 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 01:33:06,880 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:33:06" (1/1) ... [2023-12-19 01:33:06,880 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f3fec78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:33:06, skipping insertion in model container [2023-12-19 01:33:06,880 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:33:06" (1/1) ... [2023-12-19 01:33:06,918 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 01:33:07,030 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.15.cil.c[913,926] [2023-12-19 01:33:07,061 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.15.cil.c[5977,5990] [2023-12-19 01:33:07,185 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:33:07,195 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 01:33:07,203 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.15.cil.c[913,926] [2023-12-19 01:33:07,212 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.15.cil.c[5977,5990] [2023-12-19 01:33:07,273 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:33:07,304 INFO L206 MainTranslator]: Completed translation [2023-12-19 01:33:07,305 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:33:07 WrapperNode [2023-12-19 01:33:07,305 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 01:33:07,306 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 01:33:07,306 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 01:33:07,306 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 01:33:07,311 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:33:07" (1/1) ... [2023-12-19 01:33:07,326 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:33:07" (1/1) ... [2023-12-19 01:33:07,375 INFO L138 Inliner]: procedures = 74, calls = 88, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 1147 [2023-12-19 01:33:07,375 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 01:33:07,376 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 01:33:07,376 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 01:33:07,376 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 01:33:07,389 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:33:07" (1/1) ... [2023-12-19 01:33:07,389 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:33:07" (1/1) ... [2023-12-19 01:33:07,393 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:33:07" (1/1) ... [2023-12-19 01:33:07,413 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 01:33:07,414 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:33:07" (1/1) ... [2023-12-19 01:33:07,414 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:33:07" (1/1) ... [2023-12-19 01:33:07,433 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:33:07" (1/1) ... [2023-12-19 01:33:07,442 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:33:07" (1/1) ... [2023-12-19 01:33:07,473 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:33:07" (1/1) ... [2023-12-19 01:33:07,477 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:33:07" (1/1) ... [2023-12-19 01:33:07,482 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 01:33:07,483 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 01:33:07,483 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 01:33:07,483 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 01:33:07,484 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:33:07" (1/1) ... [2023-12-19 01:33:07,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:33:07,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:33:07,538 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 01:33:07,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 01:33:07,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 01:33:07,597 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-19 01:33:07,598 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-19 01:33:07,599 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2023-12-19 01:33:07,599 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2023-12-19 01:33:07,600 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-19 01:33:07,600 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-19 01:33:07,600 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-19 01:33:07,600 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-19 01:33:07,600 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-19 01:33:07,600 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-19 01:33:07,601 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-19 01:33:07,601 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-19 01:33:07,601 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-19 01:33:07,601 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-19 01:33:07,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 01:33:07,601 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-19 01:33:07,601 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-19 01:33:07,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 01:33:07,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 01:33:07,601 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-19 01:33:07,601 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-19 01:33:07,602 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2023-12-19 01:33:07,602 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2023-12-19 01:33:07,743 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 01:33:07,745 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 01:33:08,697 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 01:33:08,765 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 01:33:08,765 INFO L309 CfgBuilder]: Removed 20 assume(true) statements. [2023-12-19 01:33:08,766 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:33:08 BoogieIcfgContainer [2023-12-19 01:33:08,766 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 01:33:08,768 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 01:33:08,768 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 01:33:08,770 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 01:33:08,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 01:33:06" (1/3) ... [2023-12-19 01:33:08,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ce38d8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:33:08, skipping insertion in model container [2023-12-19 01:33:08,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:33:07" (2/3) ... [2023-12-19 01:33:08,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ce38d8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:33:08, skipping insertion in model container [2023-12-19 01:33:08,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:33:08" (3/3) ... [2023-12-19 01:33:08,772 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.15.cil.c [2023-12-19 01:33:08,786 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 01:33:08,786 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-19 01:33:08,855 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 01:33:08,861 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;@59f136b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 01:33:08,862 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-19 01:33:08,870 INFO L276 IsEmpty]: Start isEmpty. Operand has 440 states, 392 states have (on average 1.7295918367346939) internal successors, (678), 399 states have internal predecessors, (678), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-19 01:33:08,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-19 01:33:08,879 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:08,879 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:08,880 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:08,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:08,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1740532851, now seen corresponding path program 1 times [2023-12-19 01:33:08,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:08,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418936628] [2023-12-19 01:33:08,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:08,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:08,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:09,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:33:09,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:09,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:33:09,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:09,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:09,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:09,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418936628] [2023-12-19 01:33:09,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418936628] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:09,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:09,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:33:09,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882420554] [2023-12-19 01:33:09,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:09,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:33:09,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:09,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:33:09,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:33:09,215 INFO L87 Difference]: Start difference. First operand has 440 states, 392 states have (on average 1.7295918367346939) internal successors, (678), 399 states have internal predecessors, (678), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-19 01:33:09,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:09,947 INFO L93 Difference]: Finished difference Result 864 states and 1464 transitions. [2023-12-19 01:33:09,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 01:33:09,949 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2023-12-19 01:33:09,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:09,958 INFO L225 Difference]: With dead ends: 864 [2023-12-19 01:33:09,958 INFO L226 Difference]: Without dead ends: 442 [2023-12-19 01:33:09,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:33:09,963 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 382 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:09,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 961 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 01:33:09,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2023-12-19 01:33:10,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 434. [2023-12-19 01:33:10,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 389 states have (on average 1.6195372750642674) internal successors, (630), 393 states have internal predecessors, (630), 35 states have call successors, (35), 10 states have call predecessors, (35), 8 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-19 01:33:10,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 696 transitions. [2023-12-19 01:33:10,008 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 696 transitions. Word has length 37 [2023-12-19 01:33:10,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:10,009 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 696 transitions. [2023-12-19 01:33:10,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-19 01:33:10,009 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 696 transitions. [2023-12-19 01:33:10,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-19 01:33:10,010 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:10,010 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:10,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 01:33:10,011 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:10,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:10,011 INFO L85 PathProgramCache]: Analyzing trace with hash 503450447, now seen corresponding path program 1 times [2023-12-19 01:33:10,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:10,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564145125] [2023-12-19 01:33:10,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:10,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:10,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:10,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:33:10,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:10,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:33:10,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:10,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:10,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:10,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564145125] [2023-12-19 01:33:10,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564145125] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:10,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:10,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:33:10,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168566626] [2023-12-19 01:33:10,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:10,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:33:10,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:10,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:33:10,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:33:10,081 INFO L87 Difference]: Start difference. First operand 434 states and 696 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 01:33:10,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:10,563 INFO L93 Difference]: Finished difference Result 553 states and 868 transitions. [2023-12-19 01:33:10,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 01:33:10,563 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2023-12-19 01:33:10,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:10,571 INFO L225 Difference]: With dead ends: 553 [2023-12-19 01:33:10,571 INFO L226 Difference]: Without dead ends: 497 [2023-12-19 01:33:10,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:33:10,573 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 946 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:10,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 736 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 01:33:10,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2023-12-19 01:33:10,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 491. [2023-12-19 01:33:10,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 439 states have (on average 1.5922551252847381) internal successors, (699), 444 states have internal predecessors, (699), 39 states have call successors, (39), 12 states have call predecessors, (39), 11 states have return successors, (41), 35 states have call predecessors, (41), 35 states have call successors, (41) [2023-12-19 01:33:10,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 779 transitions. [2023-12-19 01:33:10,602 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 779 transitions. Word has length 37 [2023-12-19 01:33:10,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:10,603 INFO L495 AbstractCegarLoop]: Abstraction has 491 states and 779 transitions. [2023-12-19 01:33:10,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 01:33:10,603 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 779 transitions. [2023-12-19 01:33:10,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-19 01:33:10,604 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:10,604 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:10,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 01:33:10,605 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:10,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:10,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1800984901, now seen corresponding path program 1 times [2023-12-19 01:33:10,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:10,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703209806] [2023-12-19 01:33:10,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:10,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:10,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:10,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:33:10,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:10,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:33:10,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:10,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:10,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:10,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703209806] [2023-12-19 01:33:10,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703209806] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:10,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:10,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:33:10,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280643493] [2023-12-19 01:33:10,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:10,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:33:10,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:10,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:33:10,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:33:10,673 INFO L87 Difference]: Start difference. First operand 491 states and 779 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 01:33:11,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:11,105 INFO L93 Difference]: Finished difference Result 725 states and 1123 transitions. [2023-12-19 01:33:11,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 01:33:11,106 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2023-12-19 01:33:11,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:11,109 INFO L225 Difference]: With dead ends: 725 [2023-12-19 01:33:11,109 INFO L226 Difference]: Without dead ends: 614 [2023-12-19 01:33:11,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:33:11,110 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 964 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 991 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:11,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [991 Valid, 742 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 01:33:11,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2023-12-19 01:33:11,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 591. [2023-12-19 01:33:11,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 526 states have (on average 1.553231939163498) internal successors, (817), 532 states have internal predecessors, (817), 47 states have call successors, (47), 16 states have call predecessors, (47), 16 states have return successors, (55), 43 states have call predecessors, (55), 43 states have call successors, (55) [2023-12-19 01:33:11,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 919 transitions. [2023-12-19 01:33:11,168 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 919 transitions. Word has length 38 [2023-12-19 01:33:11,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:11,168 INFO L495 AbstractCegarLoop]: Abstraction has 591 states and 919 transitions. [2023-12-19 01:33:11,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 01:33:11,169 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 919 transitions. [2023-12-19 01:33:11,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-19 01:33:11,170 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:11,170 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:11,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 01:33:11,171 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:11,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:11,171 INFO L85 PathProgramCache]: Analyzing trace with hash -335941947, now seen corresponding path program 1 times [2023-12-19 01:33:11,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:11,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553046579] [2023-12-19 01:33:11,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:11,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:11,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:11,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:33:11,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:11,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-19 01:33:11,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:11,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:11,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:11,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553046579] [2023-12-19 01:33:11,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553046579] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:11,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:11,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:33:11,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456625085] [2023-12-19 01:33:11,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:11,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:33:11,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:11,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:33:11,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:33:11,210 INFO L87 Difference]: Start difference. First operand 591 states and 919 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 01:33:11,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:11,734 INFO L93 Difference]: Finished difference Result 1011 states and 1500 transitions. [2023-12-19 01:33:11,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 01:33:11,734 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2023-12-19 01:33:11,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:11,737 INFO L225 Difference]: With dead ends: 1011 [2023-12-19 01:33:11,738 INFO L226 Difference]: Without dead ends: 800 [2023-12-19 01:33:11,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:33:11,739 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 365 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:11,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 1056 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 01:33:11,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2023-12-19 01:33:11,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 696. [2023-12-19 01:33:11,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 619 states have (on average 1.5282714054927302) internal successors, (946), 627 states have internal predecessors, (946), 53 states have call successors, (53), 22 states have call predecessors, (53), 22 states have return successors, (61), 47 states have call predecessors, (61), 49 states have call successors, (61) [2023-12-19 01:33:11,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 1060 transitions. [2023-12-19 01:33:11,764 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 1060 transitions. Word has length 39 [2023-12-19 01:33:11,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:11,764 INFO L495 AbstractCegarLoop]: Abstraction has 696 states and 1060 transitions. [2023-12-19 01:33:11,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 01:33:11,765 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 1060 transitions. [2023-12-19 01:33:11,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-19 01:33:11,766 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:11,766 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:11,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 01:33:11,767 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:11,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:11,767 INFO L85 PathProgramCache]: Analyzing trace with hash -2727102, now seen corresponding path program 1 times [2023-12-19 01:33:11,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:11,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906790657] [2023-12-19 01:33:11,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:11,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:11,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:33:11,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:11,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 01:33:11,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:11,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 01:33:11,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:11,824 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 01:33:11,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:11,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906790657] [2023-12-19 01:33:11,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906790657] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:11,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:11,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:33:11,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799245520] [2023-12-19 01:33:11,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:11,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:33:11,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:11,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:33:11,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:33:11,827 INFO L87 Difference]: Start difference. First operand 696 states and 1060 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-19 01:33:12,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:12,407 INFO L93 Difference]: Finished difference Result 1001 states and 1482 transitions. [2023-12-19 01:33:12,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 01:33:12,408 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 54 [2023-12-19 01:33:12,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:12,412 INFO L225 Difference]: With dead ends: 1001 [2023-12-19 01:33:12,412 INFO L226 Difference]: Without dead ends: 790 [2023-12-19 01:33:12,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:33:12,420 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 350 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:12,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 1101 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 01:33:12,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2023-12-19 01:33:12,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 756. [2023-12-19 01:33:12,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 670 states have (on average 1.5029850746268656) internal successors, (1007), 679 states have internal predecessors, (1007), 58 states have call successors, (58), 25 states have call predecessors, (58), 26 states have return successors, (70), 52 states have call predecessors, (70), 54 states have call successors, (70) [2023-12-19 01:33:12,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 1135 transitions. [2023-12-19 01:33:12,486 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 1135 transitions. Word has length 54 [2023-12-19 01:33:12,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:12,487 INFO L495 AbstractCegarLoop]: Abstraction has 756 states and 1135 transitions. [2023-12-19 01:33:12,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-19 01:33:12,487 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 1135 transitions. [2023-12-19 01:33:12,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-19 01:33:12,490 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:12,490 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:12,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 01:33:12,490 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:12,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:12,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1531208578, now seen corresponding path program 1 times [2023-12-19 01:33:12,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:12,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932187039] [2023-12-19 01:33:12,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:12,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:12,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:33:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:12,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-19 01:33:12,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:12,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:33:12,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:12,599 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-19 01:33:12,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:12,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932187039] [2023-12-19 01:33:12,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932187039] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:12,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:12,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:33:12,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906897105] [2023-12-19 01:33:12,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:12,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:33:12,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:12,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:33:12,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:33:12,601 INFO L87 Difference]: Start difference. First operand 756 states and 1135 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-19 01:33:13,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:13,146 INFO L93 Difference]: Finished difference Result 1245 states and 1795 transitions. [2023-12-19 01:33:13,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 01:33:13,147 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 59 [2023-12-19 01:33:13,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:13,151 INFO L225 Difference]: With dead ends: 1245 [2023-12-19 01:33:13,151 INFO L226 Difference]: Without dead ends: 910 [2023-12-19 01:33:13,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:33:13,153 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 950 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:13,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 754 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 01:33:13,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2023-12-19 01:33:13,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 861. [2023-12-19 01:33:13,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 762 states have (on average 1.4698162729658792) internal successors, (1120), 772 states have internal predecessors, (1120), 65 states have call successors, (65), 30 states have call predecessors, (65), 32 states have return successors, (81), 59 states have call predecessors, (81), 61 states have call successors, (81) [2023-12-19 01:33:13,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1266 transitions. [2023-12-19 01:33:13,182 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1266 transitions. Word has length 59 [2023-12-19 01:33:13,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:13,182 INFO L495 AbstractCegarLoop]: Abstraction has 861 states and 1266 transitions. [2023-12-19 01:33:13,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-19 01:33:13,182 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1266 transitions. [2023-12-19 01:33:13,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-19 01:33:13,183 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:13,183 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, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:13,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 01:33:13,184 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:13,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:13,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1753515059, now seen corresponding path program 1 times [2023-12-19 01:33:13,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:13,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648232533] [2023-12-19 01:33:13,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:13,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:13,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:13,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:33:13,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:13,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:33:13,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:13,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:33:13,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:13,263 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-19 01:33:13,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:13,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648232533] [2023-12-19 01:33:13,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648232533] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:13,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:13,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 01:33:13,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288440397] [2023-12-19 01:33:13,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:13,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 01:33:13,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:13,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 01:33:13,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:33:13,265 INFO L87 Difference]: Start difference. First operand 861 states and 1266 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-19 01:33:13,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:13,859 INFO L93 Difference]: Finished difference Result 1333 states and 1912 transitions. [2023-12-19 01:33:13,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:33:13,860 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 60 [2023-12-19 01:33:13,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:13,866 INFO L225 Difference]: With dead ends: 1333 [2023-12-19 01:33:13,866 INFO L226 Difference]: Without dead ends: 938 [2023-12-19 01:33:13,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:33:13,868 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 303 mSDsluCounter, 994 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:13,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 1378 Invalid, 1149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 01:33:13,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2023-12-19 01:33:13,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 865. [2023-12-19 01:33:13,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 765 states have (on average 1.45359477124183) internal successors, (1112), 776 states have internal predecessors, (1112), 65 states have call successors, (65), 30 states have call predecessors, (65), 33 states have return successors, (81), 59 states have call predecessors, (81), 61 states have call successors, (81) [2023-12-19 01:33:13,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1258 transitions. [2023-12-19 01:33:13,912 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1258 transitions. Word has length 60 [2023-12-19 01:33:13,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:13,913 INFO L495 AbstractCegarLoop]: Abstraction has 865 states and 1258 transitions. [2023-12-19 01:33:13,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-19 01:33:13,913 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1258 transitions. [2023-12-19 01:33:13,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-19 01:33:13,915 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:13,915 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, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:13,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 01:33:13,916 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:13,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:13,916 INFO L85 PathProgramCache]: Analyzing trace with hash 44124557, now seen corresponding path program 1 times [2023-12-19 01:33:13,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:13,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318415611] [2023-12-19 01:33:13,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:13,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:13,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:13,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:33:13,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:13,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:33:13,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:14,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:33:14,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:14,028 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-19 01:33:14,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:14,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318415611] [2023-12-19 01:33:14,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318415611] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:33:14,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821856007] [2023-12-19 01:33:14,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:14,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:33:14,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:33:14,033 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:33:14,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 01:33:14,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:14,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 01:33:14,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:33:14,217 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 01:33:14,218 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:33:14,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821856007] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:14,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:33:14,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-19 01:33:14,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621493961] [2023-12-19 01:33:14,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:14,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:33:14,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:14,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:33:14,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:33:14,220 INFO L87 Difference]: Start difference. First operand 865 states and 1258 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-19 01:33:14,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:14,344 INFO L93 Difference]: Finished difference Result 1262 states and 1795 transitions. [2023-12-19 01:33:14,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:33:14,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 60 [2023-12-19 01:33:14,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:14,349 INFO L225 Difference]: With dead ends: 1262 [2023-12-19 01:33:14,349 INFO L226 Difference]: Without dead ends: 863 [2023-12-19 01:33:14,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:33:14,356 INFO L413 NwaCegarLoop]: 683 mSDtfsCounter, 66 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:14,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 1301 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:33:14,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2023-12-19 01:33:14,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 825. [2023-12-19 01:33:14,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 731 states have (on average 1.4445964432284542) internal successors, (1056), 742 states have internal predecessors, (1056), 61 states have call successors, (61), 28 states have call predecessors, (61), 31 states have return successors, (75), 55 states have call predecessors, (75), 57 states have call successors, (75) [2023-12-19 01:33:14,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 1192 transitions. [2023-12-19 01:33:14,397 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 1192 transitions. Word has length 60 [2023-12-19 01:33:14,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:14,400 INFO L495 AbstractCegarLoop]: Abstraction has 825 states and 1192 transitions. [2023-12-19 01:33:14,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-19 01:33:14,400 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 1192 transitions. [2023-12-19 01:33:14,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-19 01:33:14,401 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:14,402 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:14,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 01:33:14,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:33:14,610 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:14,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:14,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1114548236, now seen corresponding path program 1 times [2023-12-19 01:33:14,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:14,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813666527] [2023-12-19 01:33:14,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:14,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:14,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:14,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:33:14,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:14,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:33:14,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:14,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:33:14,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:14,747 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 01:33:14,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:14,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813666527] [2023-12-19 01:33:14,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813666527] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:33:14,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542593674] [2023-12-19 01:33:14,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:14,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:33:14,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:33:14,750 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:33:14,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 01:33:14,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:14,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 01:33:14,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:33:14,959 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:14,960 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:33:15,004 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-19 01:33:15,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542593674] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 01:33:15,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-19 01:33:15,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 7 [2023-12-19 01:33:15,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806584077] [2023-12-19 01:33:15,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:15,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:33:15,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:15,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:33:15,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:33:15,007 INFO L87 Difference]: Start difference. First operand 825 states and 1192 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-19 01:33:15,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:15,204 INFO L93 Difference]: Finished difference Result 870 states and 1247 transitions. [2023-12-19 01:33:15,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 01:33:15,205 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 60 [2023-12-19 01:33:15,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:15,210 INFO L225 Difference]: With dead ends: 870 [2023-12-19 01:33:15,210 INFO L226 Difference]: Without dead ends: 867 [2023-12-19 01:33:15,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:33:15,212 INFO L413 NwaCegarLoop]: 657 mSDtfsCounter, 1262 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1262 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:15,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1262 Valid, 710 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:33:15,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2023-12-19 01:33:15,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 824. [2023-12-19 01:33:15,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 731 states have (on average 1.441860465116279) internal successors, (1054), 741 states have internal predecessors, (1054), 60 states have call successors, (60), 28 states have call predecessors, (60), 31 states have return successors, (75), 55 states have call predecessors, (75), 57 states have call successors, (75) [2023-12-19 01:33:15,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1189 transitions. [2023-12-19 01:33:15,254 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1189 transitions. Word has length 60 [2023-12-19 01:33:15,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:15,255 INFO L495 AbstractCegarLoop]: Abstraction has 824 states and 1189 transitions. [2023-12-19 01:33:15,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-19 01:33:15,255 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1189 transitions. [2023-12-19 01:33:15,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-19 01:33:15,256 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:15,257 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:15,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 01:33:15,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-12-19 01:33:15,465 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:15,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:15,466 INFO L85 PathProgramCache]: Analyzing trace with hash 189760741, now seen corresponding path program 1 times [2023-12-19 01:33:15,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:15,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603035538] [2023-12-19 01:33:15,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:15,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:15,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:15,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:33:15,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:15,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:33:15,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:15,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:33:15,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:15,579 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 01:33:15,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:15,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603035538] [2023-12-19 01:33:15,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603035538] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:33:15,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128768125] [2023-12-19 01:33:15,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:15,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:33:15,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:33:15,581 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:33:15,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 01:33:15,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:15,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 01:33:15,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:33:15,914 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:15,915 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:33:15,971 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-19 01:33:15,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128768125] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:33:15,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:33:15,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2023-12-19 01:33:15,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152692951] [2023-12-19 01:33:15,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:33:15,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 01:33:15,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:15,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 01:33:15,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-19 01:33:15,974 INFO L87 Difference]: Start difference. First operand 824 states and 1189 transitions. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 9 states have internal predecessors, (134), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-12-19 01:33:17,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:17,238 INFO L93 Difference]: Finished difference Result 1890 states and 2585 transitions. [2023-12-19 01:33:17,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-19 01:33:17,239 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 9 states have internal predecessors, (134), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 61 [2023-12-19 01:33:17,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:17,244 INFO L225 Difference]: With dead ends: 1890 [2023-12-19 01:33:17,244 INFO L226 Difference]: Without dead ends: 1534 [2023-12-19 01:33:17,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=664, Unknown=0, NotChecked=0, Total=812 [2023-12-19 01:33:17,246 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 1155 mSDsluCounter, 2355 mSDsCounter, 0 mSdLazyCounter, 2506 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1189 SdHoareTripleChecker+Valid, 2799 SdHoareTripleChecker+Invalid, 2554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 2506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:17,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1189 Valid, 2799 Invalid, 2554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 2506 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 01:33:17,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1534 states. [2023-12-19 01:33:17,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1534 to 1143. [2023-12-19 01:33:17,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 1013 states have (on average 1.3879565646594274) internal successors, (1406), 1030 states have internal predecessors, (1406), 79 states have call successors, (79), 41 states have call predecessors, (79), 49 states have return successors, (106), 72 states have call predecessors, (106), 76 states have call successors, (106) [2023-12-19 01:33:17,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 1591 transitions. [2023-12-19 01:33:17,289 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 1591 transitions. Word has length 61 [2023-12-19 01:33:17,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:17,290 INFO L495 AbstractCegarLoop]: Abstraction has 1143 states and 1591 transitions. [2023-12-19 01:33:17,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 9 states have internal predecessors, (134), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-12-19 01:33:17,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 1591 transitions. [2023-12-19 01:33:17,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 01:33:17,292 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:17,292 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:17,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 01:33:17,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:33:17,499 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:17,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:17,499 INFO L85 PathProgramCache]: Analyzing trace with hash 126117954, now seen corresponding path program 1 times [2023-12-19 01:33:17,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:17,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719047164] [2023-12-19 01:33:17,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:17,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:17,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:17,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:33:17,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:17,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:33:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:17,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 01:33:17,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:17,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 01:33:17,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:17,539 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-19 01:33:17,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:17,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719047164] [2023-12-19 01:33:17,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719047164] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:17,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:17,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:33:17,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268597767] [2023-12-19 01:33:17,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:17,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:33:17,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:17,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:33:17,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:33:17,541 INFO L87 Difference]: Start difference. First operand 1143 states and 1591 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-19 01:33:17,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:17,978 INFO L93 Difference]: Finished difference Result 1745 states and 2354 transitions. [2023-12-19 01:33:17,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 01:33:17,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 78 [2023-12-19 01:33:17,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:17,983 INFO L225 Difference]: With dead ends: 1745 [2023-12-19 01:33:17,983 INFO L226 Difference]: Without dead ends: 1150 [2023-12-19 01:33:17,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:33:17,984 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 961 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:17,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [989 Valid, 765 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 01:33:17,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2023-12-19 01:33:18,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 1079. [2023-12-19 01:33:18,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 956 states have (on average 1.387029288702929) internal successors, (1326), 973 states have internal predecessors, (1326), 76 states have call successors, (76), 38 states have call predecessors, (76), 45 states have return successors, (101), 68 states have call predecessors, (101), 73 states have call successors, (101) [2023-12-19 01:33:18,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1503 transitions. [2023-12-19 01:33:18,029 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1503 transitions. Word has length 78 [2023-12-19 01:33:18,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:18,029 INFO L495 AbstractCegarLoop]: Abstraction has 1079 states and 1503 transitions. [2023-12-19 01:33:18,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-19 01:33:18,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1503 transitions. [2023-12-19 01:33:18,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-19 01:33:18,031 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:18,031 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:18,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 01:33:18,032 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:18,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:18,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1172774086, now seen corresponding path program 1 times [2023-12-19 01:33:18,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:18,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322659260] [2023-12-19 01:33:18,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:18,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:18,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:18,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:33:18,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:18,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:33:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:18,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-19 01:33:18,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:18,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 01:33:18,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:18,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 01:33:18,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:18,102 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-19 01:33:18,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:18,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322659260] [2023-12-19 01:33:18,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322659260] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:33:18,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555318322] [2023-12-19 01:33:18,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:18,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:33:18,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:33:18,121 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:33:18,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 01:33:18,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:18,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 01:33:18,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:33:18,269 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 01:33:18,269 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:33:18,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555318322] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:18,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:33:18,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-19 01:33:18,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188064495] [2023-12-19 01:33:18,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:18,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:33:18,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:18,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:33:18,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:33:18,272 INFO L87 Difference]: Start difference. First operand 1079 states and 1503 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-19 01:33:18,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:18,354 INFO L93 Difference]: Finished difference Result 1362 states and 1854 transitions. [2023-12-19 01:33:18,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:33:18,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 92 [2023-12-19 01:33:18,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:18,356 INFO L225 Difference]: With dead ends: 1362 [2023-12-19 01:33:18,356 INFO L226 Difference]: Without dead ends: 375 [2023-12-19 01:33:18,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:33:18,358 INFO L413 NwaCegarLoop]: 674 mSDtfsCounter, 54 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 1293 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:18,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 1293 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:33:18,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2023-12-19 01:33:18,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2023-12-19 01:33:18,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 339 states have (on average 1.640117994100295) internal successors, (556), 341 states have internal predecessors, (556), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-19 01:33:18,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 612 transitions. [2023-12-19 01:33:18,378 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 612 transitions. Word has length 92 [2023-12-19 01:33:18,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:18,378 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 612 transitions. [2023-12-19 01:33:18,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-19 01:33:18,379 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 612 transitions. [2023-12-19 01:33:18,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-19 01:33:18,381 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:18,382 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:18,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 01:33:18,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:33:18,589 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:18,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:18,589 INFO L85 PathProgramCache]: Analyzing trace with hash -734965434, now seen corresponding path program 1 times [2023-12-19 01:33:18,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:18,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105339405] [2023-12-19 01:33:18,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:18,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:18,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:18,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:33:18,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:18,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:33:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:18,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:33:18,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:18,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:33:18,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:18,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:33:18,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:18,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:18,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:18,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105339405] [2023-12-19 01:33:18,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105339405] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:18,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:18,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:33:18,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939181670] [2023-12-19 01:33:18,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:18,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:33:18,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:18,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:33:18,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:33:18,785 INFO L87 Difference]: Start difference. First operand 375 states and 612 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:21,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:21,162 INFO L93 Difference]: Finished difference Result 949 states and 1583 transitions. [2023-12-19 01:33:21,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 01:33:21,163 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (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 172 [2023-12-19 01:33:21,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:21,165 INFO L225 Difference]: With dead ends: 949 [2023-12-19 01:33:21,166 INFO L226 Difference]: Without dead ends: 581 [2023-12-19 01:33:21,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-12-19 01:33:21,167 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 1336 mSDsluCounter, 909 mSDsCounter, 0 mSdLazyCounter, 2216 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1364 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 2281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 2216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:21,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1364 Valid, 1232 Invalid, 2281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 2216 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-19 01:33:21,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2023-12-19 01:33:21,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 377. [2023-12-19 01:33:21,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 341 states have (on average 1.6334310850439884) internal successors, (557), 343 states have internal predecessors, (557), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-19 01:33:21,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 613 transitions. [2023-12-19 01:33:21,187 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 613 transitions. Word has length 172 [2023-12-19 01:33:21,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:21,187 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 613 transitions. [2023-12-19 01:33:21,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:21,187 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 613 transitions. [2023-12-19 01:33:21,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-19 01:33:21,188 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:21,189 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:21,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 01:33:21,189 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:21,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:21,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1407827642, now seen corresponding path program 1 times [2023-12-19 01:33:21,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:21,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875839019] [2023-12-19 01:33:21,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:21,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:21,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:21,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:33:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:21,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:33:21,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:21,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:33:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:21,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:33:21,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:21,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:33:21,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:21,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:21,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:21,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875839019] [2023-12-19 01:33:21,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875839019] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:21,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:21,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:33:21,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386892703] [2023-12-19 01:33:21,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:21,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:33:21,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:21,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:33:21,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:33:21,422 INFO L87 Difference]: Start difference. First operand 377 states and 613 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:23,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:23,468 INFO L93 Difference]: Finished difference Result 917 states and 1527 transitions. [2023-12-19 01:33:23,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 01:33:23,468 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (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 172 [2023-12-19 01:33:23,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:23,471 INFO L225 Difference]: With dead ends: 917 [2023-12-19 01:33:23,471 INFO L226 Difference]: Without dead ends: 555 [2023-12-19 01:33:23,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-12-19 01:33:23,473 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 1192 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 2260 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 1228 SdHoareTripleChecker+Invalid, 2325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 2260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:23,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1220 Valid, 1228 Invalid, 2325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 2260 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 01:33:23,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2023-12-19 01:33:23,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 379. [2023-12-19 01:33:23,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 343 states have (on average 1.6268221574344024) internal successors, (558), 345 states have internal predecessors, (558), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-19 01:33:23,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 614 transitions. [2023-12-19 01:33:23,505 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 614 transitions. Word has length 172 [2023-12-19 01:33:23,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:23,505 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 614 transitions. [2023-12-19 01:33:23,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:23,506 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 614 transitions. [2023-12-19 01:33:23,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-19 01:33:23,507 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:23,507 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:23,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 01:33:23,507 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:23,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:23,518 INFO L85 PathProgramCache]: Analyzing trace with hash -654678006, now seen corresponding path program 1 times [2023-12-19 01:33:23,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:23,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465204133] [2023-12-19 01:33:23,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:23,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:23,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:23,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:33:23,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:23,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:33:23,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:23,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:33:23,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:23,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:33:23,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:23,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:33:23,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:23,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:23,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:23,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465204133] [2023-12-19 01:33:23,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465204133] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:23,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:23,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 01:33:23,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246174565] [2023-12-19 01:33:23,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:23,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 01:33:23,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:23,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 01:33:23,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:33:23,830 INFO L87 Difference]: Start difference. First operand 379 states and 614 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:26,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:26,319 INFO L93 Difference]: Finished difference Result 1406 states and 2326 transitions. [2023-12-19 01:33:26,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 01:33:26,320 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (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 172 [2023-12-19 01:33:26,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:26,326 INFO L225 Difference]: With dead ends: 1406 [2023-12-19 01:33:26,326 INFO L226 Difference]: Without dead ends: 1047 [2023-12-19 01:33:26,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:33:26,328 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 1597 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 2471 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1617 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 2591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:26,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1617 Valid, 1147 Invalid, 2591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2471 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-19 01:33:26,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2023-12-19 01:33:26,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 758. [2023-12-19 01:33:26,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 693 states have (on average 1.6378066378066378) internal successors, (1135), 696 states have internal predecessors, (1135), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (52), 49 states have call predecessors, (52), 49 states have call successors, (52) [2023-12-19 01:33:26,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 1238 transitions. [2023-12-19 01:33:26,360 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 1238 transitions. Word has length 172 [2023-12-19 01:33:26,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:26,361 INFO L495 AbstractCegarLoop]: Abstraction has 758 states and 1238 transitions. [2023-12-19 01:33:26,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:26,361 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 1238 transitions. [2023-12-19 01:33:26,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-19 01:33:26,362 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:26,362 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:26,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 01:33:26,362 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:26,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:26,363 INFO L85 PathProgramCache]: Analyzing trace with hash 350427270, now seen corresponding path program 1 times [2023-12-19 01:33:26,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:26,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156377172] [2023-12-19 01:33:26,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:26,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:26,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:26,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:33:26,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:26,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:33:26,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:26,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:33:26,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:26,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:33:26,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:26,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:33:26,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:26,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:26,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:26,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156377172] [2023-12-19 01:33:26,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156377172] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:26,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:26,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:33:26,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771051704] [2023-12-19 01:33:26,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:26,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:33:26,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:26,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:33:26,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:33:26,598 INFO L87 Difference]: Start difference. First operand 758 states and 1238 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:29,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:29,923 INFO L93 Difference]: Finished difference Result 2329 states and 3860 transitions. [2023-12-19 01:33:29,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:33:29,940 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (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 172 [2023-12-19 01:33:29,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:29,946 INFO L225 Difference]: With dead ends: 2329 [2023-12-19 01:33:29,946 INFO L226 Difference]: Without dead ends: 1591 [2023-12-19 01:33:29,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:33:29,948 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 1634 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 4019 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1654 SdHoareTripleChecker+Valid, 2188 SdHoareTripleChecker+Invalid, 4086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 4019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:29,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1654 Valid, 2188 Invalid, 4086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 4019 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-19 01:33:29,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1591 states. [2023-12-19 01:33:30,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1591 to 1108. [2023-12-19 01:33:30,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1108 states, 1014 states have (on average 1.631163708086785) internal successors, (1654), 1018 states have internal predecessors, (1654), 73 states have call successors, (73), 19 states have call predecessors, (73), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2023-12-19 01:33:30,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 1803 transitions. [2023-12-19 01:33:30,004 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 1803 transitions. Word has length 172 [2023-12-19 01:33:30,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:30,005 INFO L495 AbstractCegarLoop]: Abstraction has 1108 states and 1803 transitions. [2023-12-19 01:33:30,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:30,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 1803 transitions. [2023-12-19 01:33:30,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-19 01:33:30,006 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:30,006 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:30,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 01:33:30,006 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:30,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:30,007 INFO L85 PathProgramCache]: Analyzing trace with hash 736289672, now seen corresponding path program 1 times [2023-12-19 01:33:30,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:30,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693210020] [2023-12-19 01:33:30,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:30,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:30,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:30,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:33:30,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:30,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:33:30,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:30,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:33:30,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:30,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:33:30,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:30,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:33:30,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:30,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:30,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:30,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693210020] [2023-12-19 01:33:30,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693210020] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:30,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:30,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:33:30,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570657398] [2023-12-19 01:33:30,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:30,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:33:30,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:30,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:33:30,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:33:30,215 INFO L87 Difference]: Start difference. First operand 1108 states and 1803 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:34,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:34,359 INFO L93 Difference]: Finished difference Result 3684 states and 6095 transitions. [2023-12-19 01:33:34,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:33:34,360 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (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 172 [2023-12-19 01:33:34,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:34,382 INFO L225 Difference]: With dead ends: 3684 [2023-12-19 01:33:34,383 INFO L226 Difference]: Without dead ends: 2596 [2023-12-19 01:33:34,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:33:34,403 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 1632 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 4015 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1652 SdHoareTripleChecker+Valid, 2186 SdHoareTripleChecker+Invalid, 4084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 4015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:34,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1652 Valid, 2186 Invalid, 4084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 4015 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 01:33:34,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2596 states. [2023-12-19 01:33:34,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2596 to 1809. [2023-12-19 01:33:34,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1657 states have (on average 1.6252263126131563) internal successors, (2693), 1663 states have internal predecessors, (2693), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2023-12-19 01:33:34,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 2938 transitions. [2023-12-19 01:33:34,473 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 2938 transitions. Word has length 172 [2023-12-19 01:33:34,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:34,473 INFO L495 AbstractCegarLoop]: Abstraction has 1809 states and 2938 transitions. [2023-12-19 01:33:34,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:34,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 2938 transitions. [2023-12-19 01:33:34,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-19 01:33:34,474 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:34,474 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:34,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 01:33:34,475 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:34,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:34,475 INFO L85 PathProgramCache]: Analyzing trace with hash 471642182, now seen corresponding path program 1 times [2023-12-19 01:33:34,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:34,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011608053] [2023-12-19 01:33:34,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:34,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:34,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:34,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:33:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:34,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:33:34,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:34,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:33:34,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:34,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:33:34,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:34,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:33:34,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:34,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:34,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:34,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011608053] [2023-12-19 01:33:34,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011608053] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:34,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:34,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:33:34,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944999006] [2023-12-19 01:33:34,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:34,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:33:34,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:34,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:33:34,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:33:34,763 INFO L87 Difference]: Start difference. First operand 1809 states and 2938 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:36,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:36,569 INFO L93 Difference]: Finished difference Result 4373 states and 7221 transitions. [2023-12-19 01:33:36,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:33:36,570 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (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 172 [2023-12-19 01:33:36,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:36,584 INFO L225 Difference]: With dead ends: 4373 [2023-12-19 01:33:36,584 INFO L226 Difference]: Without dead ends: 2584 [2023-12-19 01:33:36,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:33:36,606 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 1335 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 1849 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1356 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 1949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:36,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1356 Valid, 944 Invalid, 1949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1849 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 01:33:36,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2584 states. [2023-12-19 01:33:36,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2584 to 1809. [2023-12-19 01:33:36,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1657 states have (on average 1.6222088111044055) internal successors, (2688), 1663 states have internal predecessors, (2688), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2023-12-19 01:33:36,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 2933 transitions. [2023-12-19 01:33:36,845 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 2933 transitions. Word has length 172 [2023-12-19 01:33:36,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:36,845 INFO L495 AbstractCegarLoop]: Abstraction has 1809 states and 2933 transitions. [2023-12-19 01:33:36,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:36,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 2933 transitions. [2023-12-19 01:33:36,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-19 01:33:36,847 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:36,848 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:36,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 01:33:36,848 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:36,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:36,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1892199480, now seen corresponding path program 1 times [2023-12-19 01:33:36,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:36,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115687786] [2023-12-19 01:33:36,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:36,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:36,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:37,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:33:37,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:37,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:33:37,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:37,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:33:37,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:37,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:33:37,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:37,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:33:37,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:37,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:37,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:37,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115687786] [2023-12-19 01:33:37,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115687786] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:37,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:37,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:33:37,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813830952] [2023-12-19 01:33:37,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:37,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:33:37,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:37,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:33:37,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:33:37,246 INFO L87 Difference]: Start difference. First operand 1809 states and 2933 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:39,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:39,107 INFO L93 Difference]: Finished difference Result 4362 states and 7185 transitions. [2023-12-19 01:33:39,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:33:39,108 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (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 172 [2023-12-19 01:33:39,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:39,133 INFO L225 Difference]: With dead ends: 4362 [2023-12-19 01:33:39,134 INFO L226 Difference]: Without dead ends: 2573 [2023-12-19 01:33:39,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:33:39,139 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 1257 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 1886 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1278 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 1958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:39,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1278 Valid, 1121 Invalid, 1958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1886 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 01:33:39,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2573 states. [2023-12-19 01:33:39,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2573 to 1809. [2023-12-19 01:33:39,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1657 states have (on average 1.6191913095956547) internal successors, (2683), 1663 states have internal predecessors, (2683), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2023-12-19 01:33:39,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 2928 transitions. [2023-12-19 01:33:39,253 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 2928 transitions. Word has length 172 [2023-12-19 01:33:39,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:39,253 INFO L495 AbstractCegarLoop]: Abstraction has 1809 states and 2928 transitions. [2023-12-19 01:33:39,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:39,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 2928 transitions. [2023-12-19 01:33:39,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-19 01:33:39,255 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:39,256 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:39,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 01:33:39,257 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:39,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:39,257 INFO L85 PathProgramCache]: Analyzing trace with hash 4779978, now seen corresponding path program 1 times [2023-12-19 01:33:39,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:39,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548446124] [2023-12-19 01:33:39,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:39,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:39,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:39,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:33:39,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:39,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:33:39,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:39,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:33:39,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:39,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:33:39,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:39,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:33:39,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:39,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:39,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:39,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548446124] [2023-12-19 01:33:39,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548446124] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:39,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:39,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:33:39,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966889142] [2023-12-19 01:33:39,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:39,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:33:39,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:39,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:33:39,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:33:39,546 INFO L87 Difference]: Start difference. First operand 1809 states and 2928 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:43,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:43,193 INFO L93 Difference]: Finished difference Result 6264 states and 10276 transitions. [2023-12-19 01:33:43,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:33:43,194 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (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 172 [2023-12-19 01:33:43,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:43,208 INFO L225 Difference]: With dead ends: 6264 [2023-12-19 01:33:43,208 INFO L226 Difference]: Without dead ends: 4475 [2023-12-19 01:33:43,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:33:43,212 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 1619 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 3933 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1639 SdHoareTripleChecker+Valid, 2186 SdHoareTripleChecker+Invalid, 4002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:43,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1639 Valid, 2186 Invalid, 4002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3933 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-19 01:33:43,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4475 states. [2023-12-19 01:33:43,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4475 to 3226. [2023-12-19 01:33:43,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3226 states, 2958 states have (on average 1.6139283299526708) internal successors, (4774), 2968 states have internal predecessors, (4774), 205 states have call successors, (205), 55 states have call predecessors, (205), 62 states have return successors, (238), 210 states have call predecessors, (238), 203 states have call successors, (238) [2023-12-19 01:33:43,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3226 states to 3226 states and 5217 transitions. [2023-12-19 01:33:43,345 INFO L78 Accepts]: Start accepts. Automaton has 3226 states and 5217 transitions. Word has length 172 [2023-12-19 01:33:43,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:43,346 INFO L495 AbstractCegarLoop]: Abstraction has 3226 states and 5217 transitions. [2023-12-19 01:33:43,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:43,346 INFO L276 IsEmpty]: Start isEmpty. Operand 3226 states and 5217 transitions. [2023-12-19 01:33:43,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-19 01:33:43,348 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:43,348 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:43,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 01:33:43,348 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:43,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:43,348 INFO L85 PathProgramCache]: Analyzing trace with hash 343067528, now seen corresponding path program 1 times [2023-12-19 01:33:43,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:43,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068428980] [2023-12-19 01:33:43,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:43,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:43,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:43,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:33:43,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:43,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:33:43,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:43,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:33:43,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:43,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:33:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:43,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:33:43,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:43,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:43,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:43,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068428980] [2023-12-19 01:33:43,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068428980] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:43,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:43,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:33:43,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579483918] [2023-12-19 01:33:43,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:43,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:33:43,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:43,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:33:43,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:33:43,531 INFO L87 Difference]: Start difference. First operand 3226 states and 5217 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:45,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:45,005 INFO L93 Difference]: Finished difference Result 7708 states and 12646 transitions. [2023-12-19 01:33:45,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:33:45,006 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (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 172 [2023-12-19 01:33:45,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:45,026 INFO L225 Difference]: With dead ends: 7708 [2023-12-19 01:33:45,026 INFO L226 Difference]: Without dead ends: 4502 [2023-12-19 01:33:45,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:33:45,041 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 1166 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 1999 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1187 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 2070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:45,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1187 Valid, 1122 Invalid, 2070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1999 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 01:33:45,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4502 states. [2023-12-19 01:33:45,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4502 to 3226. [2023-12-19 01:33:45,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3226 states, 2958 states have (on average 1.6108857336037863) internal successors, (4765), 2968 states have internal predecessors, (4765), 205 states have call successors, (205), 55 states have call predecessors, (205), 62 states have return successors, (238), 210 states have call predecessors, (238), 203 states have call successors, (238) [2023-12-19 01:33:45,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3226 states to 3226 states and 5208 transitions. [2023-12-19 01:33:45,232 INFO L78 Accepts]: Start accepts. Automaton has 3226 states and 5208 transitions. Word has length 172 [2023-12-19 01:33:45,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:45,232 INFO L495 AbstractCegarLoop]: Abstraction has 3226 states and 5208 transitions. [2023-12-19 01:33:45,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:45,233 INFO L276 IsEmpty]: Start isEmpty. Operand 3226 states and 5208 transitions. [2023-12-19 01:33:45,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-19 01:33:45,235 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:45,235 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:45,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 01:33:45,235 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:45,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:45,236 INFO L85 PathProgramCache]: Analyzing trace with hash 769622026, now seen corresponding path program 1 times [2023-12-19 01:33:45,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:45,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944846043] [2023-12-19 01:33:45,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:45,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:45,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:45,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:33:45,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:45,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:33:45,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:45,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:33:45,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:45,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:33:45,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:45,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:33:45,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:45,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:45,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:45,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944846043] [2023-12-19 01:33:45,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944846043] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:45,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:45,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:33:45,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590897775] [2023-12-19 01:33:45,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:45,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:33:45,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:45,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:33:45,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:33:45,435 INFO L87 Difference]: Start difference. First operand 3226 states and 5208 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:49,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:49,365 INFO L93 Difference]: Finished difference Result 11451 states and 18709 transitions. [2023-12-19 01:33:49,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:33:49,365 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (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 172 [2023-12-19 01:33:49,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:49,389 INFO L225 Difference]: With dead ends: 11451 [2023-12-19 01:33:49,389 INFO L226 Difference]: Without dead ends: 8245 [2023-12-19 01:33:49,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:33:49,396 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 1611 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 3895 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1631 SdHoareTripleChecker+Valid, 2186 SdHoareTripleChecker+Invalid, 3964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:49,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1631 Valid, 2186 Invalid, 3964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3895 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 01:33:49,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8245 states. [2023-12-19 01:33:49,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8245 to 6070. [2023-12-19 01:33:49,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6070 states, 5570 states have (on average 1.6062836624775583) internal successors, (8947), 5588 states have internal predecessors, (8947), 381 states have call successors, (381), 103 states have call predecessors, (381), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2023-12-19 01:33:49,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6070 states to 6070 states and 9804 transitions. [2023-12-19 01:33:49,736 INFO L78 Accepts]: Start accepts. Automaton has 6070 states and 9804 transitions. Word has length 172 [2023-12-19 01:33:49,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:49,736 INFO L495 AbstractCegarLoop]: Abstraction has 6070 states and 9804 transitions. [2023-12-19 01:33:49,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:49,737 INFO L276 IsEmpty]: Start isEmpty. Operand 6070 states and 9804 transitions. [2023-12-19 01:33:49,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-19 01:33:49,739 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:49,740 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:49,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 01:33:49,740 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:49,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:49,740 INFO L85 PathProgramCache]: Analyzing trace with hash 229192520, now seen corresponding path program 1 times [2023-12-19 01:33:49,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:49,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987280158] [2023-12-19 01:33:49,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:49,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:49,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:49,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:33:49,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:49,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:33:49,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:49,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:33:49,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:49,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:33:49,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:49,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:33:49,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:49,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:49,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:49,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987280158] [2023-12-19 01:33:49,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987280158] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:49,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:49,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:33:49,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733745824] [2023-12-19 01:33:49,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:49,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:33:49,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:49,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:33:49,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:33:49,961 INFO L87 Difference]: Start difference. First operand 6070 states and 9804 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:54,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:54,340 INFO L93 Difference]: Finished difference Result 21841 states and 35707 transitions. [2023-12-19 01:33:54,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:33:54,341 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (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 172 [2023-12-19 01:33:54,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:54,411 INFO L225 Difference]: With dead ends: 21841 [2023-12-19 01:33:54,412 INFO L226 Difference]: Without dead ends: 15791 [2023-12-19 01:33:54,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:33:54,433 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 1610 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 3882 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1630 SdHoareTripleChecker+Valid, 2186 SdHoareTripleChecker+Invalid, 3951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:54,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1630 Valid, 2186 Invalid, 3951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3882 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 01:33:54,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15791 states. [2023-12-19 01:33:55,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15791 to 11771. [2023-12-19 01:33:55,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11771 states, 10807 states have (on average 1.6034977329508653) internal successors, (17329), 10841 states have internal predecessors, (17329), 733 states have call successors, (733), 199 states have call predecessors, (733), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2023-12-19 01:33:55,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11771 states to 11771 states and 19068 transitions. [2023-12-19 01:33:55,064 INFO L78 Accepts]: Start accepts. Automaton has 11771 states and 19068 transitions. Word has length 172 [2023-12-19 01:33:55,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:55,064 INFO L495 AbstractCegarLoop]: Abstraction has 11771 states and 19068 transitions. [2023-12-19 01:33:55,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:33:55,064 INFO L276 IsEmpty]: Start isEmpty. Operand 11771 states and 19068 transitions. [2023-12-19 01:33:55,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-19 01:33:55,072 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:55,072 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:55,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 01:33:55,073 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:55,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:55,073 INFO L85 PathProgramCache]: Analyzing trace with hash 73211978, now seen corresponding path program 1 times [2023-12-19 01:33:55,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:55,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595283231] [2023-12-19 01:33:55,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:55,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:55,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:55,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:33:55,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:55,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:33:55,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:55,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:33:55,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:55,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:33:55,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:55,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:33:55,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:55,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:55,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:55,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595283231] [2023-12-19 01:33:55,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595283231] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:55,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:55,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:33:55,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312142738] [2023-12-19 01:33:55,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:55,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:33:55,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:55,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:33:55,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:33:55,316 INFO L87 Difference]: Start difference. First operand 11771 states and 19068 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:34:00,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:34:00,390 INFO L93 Difference]: Finished difference Result 42620 states and 69893 transitions. [2023-12-19 01:34:00,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:34:00,391 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (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 172 [2023-12-19 01:34:00,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:34:00,507 INFO L225 Difference]: With dead ends: 42620 [2023-12-19 01:34:00,508 INFO L226 Difference]: Without dead ends: 30869 [2023-12-19 01:34:00,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:34:00,549 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 1609 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 3869 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1629 SdHoareTripleChecker+Valid, 2186 SdHoareTripleChecker+Invalid, 3938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:34:00,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1629 Valid, 2186 Invalid, 3938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3869 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-19 01:34:00,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30869 states. [2023-12-19 01:34:01,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30869 to 23204. [2023-12-19 01:34:01,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23204 states, 21312 states have (on average 1.6018674924924925) internal successors, (34139), 21378 states have internal predecessors, (34139), 1437 states have call successors, (1437), 391 states have call predecessors, (1437), 454 states have return successors, (2228), 1498 states have call predecessors, (2228), 1435 states have call successors, (2228) [2023-12-19 01:34:01,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23204 states to 23204 states and 37804 transitions. [2023-12-19 01:34:01,870 INFO L78 Accepts]: Start accepts. Automaton has 23204 states and 37804 transitions. Word has length 172 [2023-12-19 01:34:01,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:34:01,870 INFO L495 AbstractCegarLoop]: Abstraction has 23204 states and 37804 transitions. [2023-12-19 01:34:01,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:34:01,871 INFO L276 IsEmpty]: Start isEmpty. Operand 23204 states and 37804 transitions. [2023-12-19 01:34:01,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-19 01:34:01,882 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:34:01,882 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:34:01,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 01:34:01,882 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:34:01,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:34:01,883 INFO L85 PathProgramCache]: Analyzing trace with hash 483822344, now seen corresponding path program 1 times [2023-12-19 01:34:01,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:34:01,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39977819] [2023-12-19 01:34:01,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:34:01,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:34:01,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:01,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:34:01,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:02,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:34:02,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:02,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:34:02,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:02,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:34:02,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:02,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:34:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:02,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:34:02,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:34:02,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39977819] [2023-12-19 01:34:02,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39977819] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:34:02,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:34:02,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:34:02,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172775836] [2023-12-19 01:34:02,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:34:02,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:34:02,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:34:02,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:34:02,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:34:02,102 INFO L87 Difference]: Start difference. First operand 23204 states and 37804 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:34:05,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:34:05,388 INFO L93 Difference]: Finished difference Result 54544 states and 90257 transitions. [2023-12-19 01:34:05,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:34:05,388 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (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 172 [2023-12-19 01:34:05,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:34:05,603 INFO L225 Difference]: With dead ends: 54544 [2023-12-19 01:34:05,604 INFO L226 Difference]: Without dead ends: 31360 [2023-12-19 01:34:05,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:34:05,652 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 1172 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 1948 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1193 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 2019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:34:05,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1193 Valid, 1122 Invalid, 2019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1948 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-19 01:34:05,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31360 states. [2023-12-19 01:34:07,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31360 to 23204. [2023-12-19 01:34:07,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23204 states, 21312 states have (on average 1.5988175675675675) internal successors, (34074), 21378 states have internal predecessors, (34074), 1437 states have call successors, (1437), 391 states have call predecessors, (1437), 454 states have return successors, (2228), 1498 states have call predecessors, (2228), 1435 states have call successors, (2228) [2023-12-19 01:34:07,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23204 states to 23204 states and 37739 transitions. [2023-12-19 01:34:07,230 INFO L78 Accepts]: Start accepts. Automaton has 23204 states and 37739 transitions. Word has length 172 [2023-12-19 01:34:07,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:34:07,230 INFO L495 AbstractCegarLoop]: Abstraction has 23204 states and 37739 transitions. [2023-12-19 01:34:07,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:34:07,230 INFO L276 IsEmpty]: Start isEmpty. Operand 23204 states and 37739 transitions. [2023-12-19 01:34:07,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-19 01:34:07,245 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:34:07,246 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:34:07,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-19 01:34:07,246 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:34:07,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:34:07,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1304047478, now seen corresponding path program 1 times [2023-12-19 01:34:07,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:34:07,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749887688] [2023-12-19 01:34:07,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:34:07,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:34:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:07,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:34:07,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:07,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:34:07,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:07,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:34:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:07,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:34:07,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:07,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:34:07,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:07,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:34:07,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:34:07,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749887688] [2023-12-19 01:34:07,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749887688] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:34:07,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:34:07,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:34:07,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772662102] [2023-12-19 01:34:07,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:34:07,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:34:07,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:34:07,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:34:07,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:34:07,483 INFO L87 Difference]: Start difference. First operand 23204 states and 37739 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:34:12,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:34:12,969 INFO L93 Difference]: Finished difference Result 84047 states and 138279 transitions. [2023-12-19 01:34:12,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:34:12,969 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (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 172 [2023-12-19 01:34:12,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:34:13,428 INFO L225 Difference]: With dead ends: 84047 [2023-12-19 01:34:13,428 INFO L226 Difference]: Without dead ends: 60863 [2023-12-19 01:34:13,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:34:13,545 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 1705 mSDsluCounter, 1119 mSDsCounter, 0 mSdLazyCounter, 3195 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1725 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 3306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 3195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:34:13,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1725 Valid, 1416 Invalid, 3306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 3195 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 01:34:13,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60863 states. [2023-12-19 01:34:15,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60863 to 46263. [2023-12-19 01:34:15,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46263 states, 42515 states have (on average 1.5975538045395743) internal successors, (67920), 42645 states have internal predecessors, (67920), 2845 states have call successors, (2845), 775 states have call predecessors, (2845), 902 states have return successors, (5158), 2970 states have call predecessors, (5158), 2843 states have call successors, (5158) [2023-12-19 01:34:15,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46263 states to 46263 states and 75923 transitions. [2023-12-19 01:34:15,997 INFO L78 Accepts]: Start accepts. Automaton has 46263 states and 75923 transitions. Word has length 172 [2023-12-19 01:34:15,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:34:15,997 INFO L495 AbstractCegarLoop]: Abstraction has 46263 states and 75923 transitions. [2023-12-19 01:34:15,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:34:15,997 INFO L276 IsEmpty]: Start isEmpty. Operand 46263 states and 75923 transitions. [2023-12-19 01:34:16,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-19 01:34:16,017 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:34:16,017 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:34:16,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-19 01:34:16,017 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:34:16,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:34:16,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1234399604, now seen corresponding path program 1 times [2023-12-19 01:34:16,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:34:16,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239124753] [2023-12-19 01:34:16,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:34:16,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:34:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:16,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:34:16,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:16,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:34:16,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:16,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:34:16,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:16,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:34:16,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:16,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:34:16,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:16,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:34:16,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:34:16,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239124753] [2023-12-19 01:34:16,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239124753] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:34:16,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:34:16,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:34:16,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52331660] [2023-12-19 01:34:16,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:34:16,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:34:16,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:34:16,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:34:16,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:34:16,334 INFO L87 Difference]: Start difference. First operand 46263 states and 75923 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:34:25,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:34:25,361 INFO L93 Difference]: Finished difference Result 189184 states and 312899 transitions. [2023-12-19 01:34:25,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:34:25,369 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (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 172 [2023-12-19 01:34:25,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:34:25,933 INFO L225 Difference]: With dead ends: 189184 [2023-12-19 01:34:25,933 INFO L226 Difference]: Without dead ends: 142941 [2023-12-19 01:34:26,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:34:26,045 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 2071 mSDsluCounter, 1677 mSDsCounter, 0 mSdLazyCounter, 3789 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2105 SdHoareTripleChecker+Valid, 2179 SdHoareTripleChecker+Invalid, 3861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 3789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:34:26,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2105 Valid, 2179 Invalid, 3861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 3789 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-19 01:34:26,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142941 states. [2023-12-19 01:34:30,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142941 to 92248. [2023-12-19 01:34:31,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92248 states, 84916 states have (on average 1.5976494418013096) internal successors, (135666), 85174 states have internal predecessors, (135666), 5533 states have call successors, (5533), 1543 states have call predecessors, (5533), 1798 states have return successors, (12348), 5786 states have call predecessors, (12348), 5531 states have call successors, (12348) [2023-12-19 01:34:31,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92248 states to 92248 states and 153547 transitions. [2023-12-19 01:34:31,561 INFO L78 Accepts]: Start accepts. Automaton has 92248 states and 153547 transitions. Word has length 172 [2023-12-19 01:34:31,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:34:31,561 INFO L495 AbstractCegarLoop]: Abstraction has 92248 states and 153547 transitions. [2023-12-19 01:34:31,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:34:31,561 INFO L276 IsEmpty]: Start isEmpty. Operand 92248 states and 153547 transitions. [2023-12-19 01:34:31,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-19 01:34:31,602 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:34:31,602 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:34:31,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-19 01:34:31,603 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:34:31,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:34:31,603 INFO L85 PathProgramCache]: Analyzing trace with hash -816510902, now seen corresponding path program 1 times [2023-12-19 01:34:31,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:34:31,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633490536] [2023-12-19 01:34:31,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:34:31,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:34:31,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:31,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:34:31,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:31,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:34:31,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:31,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:34:31,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:31,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:34:31,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:31,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:34:31,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:31,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:34:31,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:34:31,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633490536] [2023-12-19 01:34:31,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633490536] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:34:31,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:34:31,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:34:31,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136851038] [2023-12-19 01:34:31,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:34:31,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:34:31,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:34:31,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:34:31,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:34:31,833 INFO L87 Difference]: Start difference. First operand 92248 states and 153547 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:34:45,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:34:45,074 INFO L93 Difference]: Finished difference Result 373855 states and 626809 transitions. [2023-12-19 01:34:45,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:34:45,075 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (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 172 [2023-12-19 01:34:45,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:34:46,546 INFO L225 Difference]: With dead ends: 373855 [2023-12-19 01:34:46,547 INFO L226 Difference]: Without dead ends: 281627 [2023-12-19 01:34:46,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:34:46,902 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 1710 mSDsluCounter, 1674 mSDsCounter, 0 mSdLazyCounter, 4508 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1729 SdHoareTripleChecker+Valid, 2175 SdHoareTripleChecker+Invalid, 4579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 4508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-19 01:34:46,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1729 Valid, 2175 Invalid, 4579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 4508 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-19 01:34:47,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281627 states. [2023-12-19 01:34:57,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281627 to 182169. [2023-12-19 01:34:57,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182169 states, 167797 states have (on average 1.5961429584557532) internal successors, (267828), 168311 states have internal predecessors, (267828), 10781 states have call successors, (10781), 3079 states have call predecessors, (10781), 3590 states have return successors, (30974), 11290 states have call predecessors, (30974), 10779 states have call successors, (30974) [2023-12-19 01:34:58,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182169 states to 182169 states and 309583 transitions. [2023-12-19 01:34:58,599 INFO L78 Accepts]: Start accepts. Automaton has 182169 states and 309583 transitions. Word has length 172 [2023-12-19 01:34:58,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:34:58,600 INFO L495 AbstractCegarLoop]: Abstraction has 182169 states and 309583 transitions. [2023-12-19 01:34:58,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:34:58,600 INFO L276 IsEmpty]: Start isEmpty. Operand 182169 states and 309583 transitions. [2023-12-19 01:34:58,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-19 01:34:58,669 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:34:58,669 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:34:58,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-19 01:34:58,669 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:34:58,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:34:58,670 INFO L85 PathProgramCache]: Analyzing trace with hash 582442700, now seen corresponding path program 1 times [2023-12-19 01:34:58,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:34:58,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363700665] [2023-12-19 01:34:58,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:34:58,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:34:58,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:58,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:34:58,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:58,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:34:58,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:58,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 01:34:58,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:58,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 01:34:58,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:58,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-19 01:34:58,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:58,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:34:58,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:34:58,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363700665] [2023-12-19 01:34:58,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363700665] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:34:58,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:34:58,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:34:58,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486694551] [2023-12-19 01:34:58,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:34:58,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:34:58,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:34:58,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:34:58,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:34:58,895 INFO L87 Difference]: Start difference. First operand 182169 states and 309583 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (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)