./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/systemc/kundu2.cil.c --full-output --preprocessor.use.memory.slicer false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6ae2ee47 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/systemc/kundu2.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 87760fc84dfa44e1b5109b35af0fae7e5f68f814afbb1ba90e7b46e4e9e3b4bf --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 23:55:07,832 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 23:55:07,870 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-22 23:55:07,874 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 23:55:07,874 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 23:55:07,889 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 23:55:07,889 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 23:55:07,889 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 23:55:07,890 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 23:55:07,890 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 23:55:07,890 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 23:55:07,891 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 23:55:07,891 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 23:55:07,891 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 23:55:07,904 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 23:55:07,904 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 23:55:07,905 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 23:55:07,905 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-22 23:55:07,906 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 23:55:07,906 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-22 23:55:07,907 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 23:55:07,907 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 23:55:07,907 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 23:55:07,907 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 23:55:07,908 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-22 23:55:07,908 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 23:55:07,908 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 23:55:07,909 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 23:55:07,909 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 23:55:07,909 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 23:55:07,910 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 23:55:07,910 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 23:55:07,910 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 23:55:07,911 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 23:55:07,911 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 23:55:07,911 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 23:55:07,911 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 23:55:07,911 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 23:55:07,912 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 23:55:07,912 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 23:55:07,912 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 23:55:07,912 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 23:55:07,912 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87760fc84dfa44e1b5109b35af0fae7e5f68f814afbb1ba90e7b46e4e9e3b4bf Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-22 23:55:08,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 23:55:08,131 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 23:55:08,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 23:55:08,135 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 23:55:08,136 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 23:55:08,136 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/kundu2.cil.c [2023-11-22 23:55:09,105 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 23:55:09,255 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 23:55:09,256 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/kundu2.cil.c [2023-11-22 23:55:09,266 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0af9e2fcc/5183c7db97e94bc48c964baa50ad99c7/FLAG243d48d81 [2023-11-22 23:55:09,276 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0af9e2fcc/5183c7db97e94bc48c964baa50ad99c7 [2023-11-22 23:55:09,278 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 23:55:09,279 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 23:55:09,279 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 23:55:09,280 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 23:55:09,283 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 23:55:09,283 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:55:09" (1/1) ... [2023-11-22 23:55:09,284 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c35ae59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:55:09, skipping insertion in model container [2023-11-22 23:55:09,284 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:55:09" (1/1) ... [2023-11-22 23:55:09,312 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 23:55:09,414 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/kundu2.cil.c[636,649] [2023-11-22 23:55:09,476 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 23:55:09,487 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 23:55:09,495 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/kundu2.cil.c[636,649] [2023-11-22 23:55:09,525 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 23:55:09,542 INFO L206 MainTranslator]: Completed translation [2023-11-22 23:55:09,542 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:55:09 WrapperNode [2023-11-22 23:55:09,543 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 23:55:09,543 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 23:55:09,543 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 23:55:09,544 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 23:55:09,548 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:55:09" (1/1) ... [2023-11-22 23:55:09,572 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:55:09" (1/1) ... [2023-11-22 23:55:09,590 INFO L138 Inliner]: procedures = 34, calls = 40, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 312 [2023-11-22 23:55:09,590 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 23:55:09,591 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 23:55:09,591 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 23:55:09,591 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 23:55:09,598 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:55:09" (1/1) ... [2023-11-22 23:55:09,598 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:55:09" (1/1) ... [2023-11-22 23:55:09,600 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:55:09" (1/1) ... [2023-11-22 23:55:09,600 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:55:09" (1/1) ... [2023-11-22 23:55:09,604 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:55:09" (1/1) ... [2023-11-22 23:55:09,607 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:55:09" (1/1) ... [2023-11-22 23:55:09,608 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:55:09" (1/1) ... [2023-11-22 23:55:09,609 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:55:09" (1/1) ... [2023-11-22 23:55:09,611 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 23:55:09,618 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 23:55:09,618 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 23:55:09,618 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 23:55:09,619 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:55:09" (1/1) ... [2023-11-22 23:55:09,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 23:55:09,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:55:09,662 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-22 23:55:09,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-22 23:55:09,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 23:55:09,699 INFO L130 BoogieDeclarations]: Found specification of procedure write_data [2023-11-22 23:55:09,699 INFO L138 BoogieDeclarations]: Found implementation of procedure write_data [2023-11-22 23:55:09,699 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-11-22 23:55:09,699 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-11-22 23:55:09,699 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-11-22 23:55:09,700 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-11-22 23:55:09,700 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-11-22 23:55:09,700 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-11-22 23:55:09,700 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-22 23:55:09,700 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-22 23:55:09,700 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-11-22 23:55:09,700 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-11-22 23:55:09,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-22 23:55:09,701 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-11-22 23:55:09,701 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-11-22 23:55:09,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 23:55:09,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 23:55:09,765 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 23:55:09,767 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 23:55:10,035 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 23:55:10,071 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 23:55:10,072 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-22 23:55:10,072 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:55:10 BoogieIcfgContainer [2023-11-22 23:55:10,072 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 23:55:10,074 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 23:55:10,074 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 23:55:10,076 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 23:55:10,076 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:55:09" (1/3) ... [2023-11-22 23:55:10,077 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e319c25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:55:10, skipping insertion in model container [2023-11-22 23:55:10,077 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:55:09" (2/3) ... [2023-11-22 23:55:10,077 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e319c25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:55:10, skipping insertion in model container [2023-11-22 23:55:10,077 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:55:10" (3/3) ... [2023-11-22 23:55:10,078 INFO L112 eAbstractionObserver]: Analyzing ICFG kundu2.cil.c [2023-11-22 23:55:10,091 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 23:55:10,092 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-22 23:55:10,134 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 23:55:10,139 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;@2e4b2bf0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 23:55:10,139 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-22 23:55:10,142 INFO L276 IsEmpty]: Start isEmpty. Operand has 121 states, 94 states have (on average 1.5851063829787233) internal successors, (149), 98 states have internal predecessors, (149), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-22 23:55:10,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-22 23:55:10,149 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:55:10,150 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] [2023-11-22 23:55:10,150 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:55:10,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:55:10,154 INFO L85 PathProgramCache]: Analyzing trace with hash 545397817, now seen corresponding path program 1 times [2023-11-22 23:55:10,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:55:10,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329216577] [2023-11-22 23:55:10,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:55:10,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:55:10,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:10,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:55:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:10,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 23:55:10,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:10,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 23:55:10,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:10,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-22 23:55:10,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:10,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-22 23:55:10,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:10,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:55:10,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:55:10,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329216577] [2023-11-22 23:55:10,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329216577] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:55:10,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:55:10,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 23:55:10,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14210156] [2023-11-22 23:55:10,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:55:10,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 23:55:10,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:55:10,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 23:55:10,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 23:55:10,467 INFO L87 Difference]: Start difference. First operand has 121 states, 94 states have (on average 1.5851063829787233) internal successors, (149), 98 states have internal predecessors, (149), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-22 23:55:10,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:55:10,679 INFO L93 Difference]: Finished difference Result 252 states and 392 transitions. [2023-11-22 23:55:10,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 23:55:10,681 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 52 [2023-11-22 23:55:10,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:55:10,688 INFO L225 Difference]: With dead ends: 252 [2023-11-22 23:55:10,688 INFO L226 Difference]: Without dead ends: 133 [2023-11-22 23:55:10,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 23:55:10,693 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 205 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 23:55:10,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 254 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 23:55:10,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-11-22 23:55:10,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 117. [2023-11-22 23:55:10,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 92 states have (on average 1.4891304347826086) internal successors, (137), 95 states have internal predecessors, (137), 18 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-22 23:55:10,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 170 transitions. [2023-11-22 23:55:10,757 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 170 transitions. Word has length 52 [2023-11-22 23:55:10,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:55:10,775 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 170 transitions. [2023-11-22 23:55:10,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-22 23:55:10,775 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 170 transitions. [2023-11-22 23:55:10,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-22 23:55:10,779 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:55:10,779 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] [2023-11-22 23:55:10,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-22 23:55:10,783 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:55:10,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:55:10,788 INFO L85 PathProgramCache]: Analyzing trace with hash 898486199, now seen corresponding path program 1 times [2023-11-22 23:55:10,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:55:10,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319533490] [2023-11-22 23:55:10,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:55:10,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:55:10,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:10,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:55:10,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:10,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 23:55:10,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:10,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 23:55:10,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:10,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-22 23:55:10,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:10,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-22 23:55:10,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:10,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:55:10,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:55:10,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319533490] [2023-11-22 23:55:10,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319533490] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:55:10,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:55:10,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 23:55:10,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124429493] [2023-11-22 23:55:10,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:55:10,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 23:55:10,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:55:10,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 23:55:10,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 23:55:10,919 INFO L87 Difference]: Start difference. First operand 117 states and 170 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-22 23:55:11,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:55:11,169 INFO L93 Difference]: Finished difference Result 362 states and 533 transitions. [2023-11-22 23:55:11,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 23:55:11,170 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 52 [2023-11-22 23:55:11,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:55:11,175 INFO L225 Difference]: With dead ends: 362 [2023-11-22 23:55:11,175 INFO L226 Difference]: Without dead ends: 254 [2023-11-22 23:55:11,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-22 23:55:11,184 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 364 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 23:55:11,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 706 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 23:55:11,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2023-11-22 23:55:11,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 216. [2023-11-22 23:55:11,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 174 states have (on average 1.4770114942528736) internal successors, (257), 178 states have internal predecessors, (257), 29 states have call successors, (29), 13 states have call predecessors, (29), 12 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 23:55:11,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 312 transitions. [2023-11-22 23:55:11,219 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 312 transitions. Word has length 52 [2023-11-22 23:55:11,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:55:11,219 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 312 transitions. [2023-11-22 23:55:11,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-22 23:55:11,220 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 312 transitions. [2023-11-22 23:55:11,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-22 23:55:11,226 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:55:11,228 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] [2023-11-22 23:55:11,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-22 23:55:11,229 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:55:11,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:55:11,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1421806870, now seen corresponding path program 1 times [2023-11-22 23:55:11,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:55:11,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891955129] [2023-11-22 23:55:11,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:55:11,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:55:11,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:11,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:55:11,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:11,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 23:55:11,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:11,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 23:55:11,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:11,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-22 23:55:11,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:11,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-22 23:55:11,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:11,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:55:11,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:55:11,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891955129] [2023-11-22 23:55:11,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891955129] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:55:11,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:55:11,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 23:55:11,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732046165] [2023-11-22 23:55:11,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:55:11,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 23:55:11,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:55:11,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 23:55:11,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 23:55:11,391 INFO L87 Difference]: Start difference. First operand 216 states and 312 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-22 23:55:11,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:55:11,523 INFO L93 Difference]: Finished difference Result 461 states and 681 transitions. [2023-11-22 23:55:11,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 23:55:11,524 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 52 [2023-11-22 23:55:11,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:55:11,528 INFO L225 Difference]: With dead ends: 461 [2023-11-22 23:55:11,528 INFO L226 Difference]: Without dead ends: 254 [2023-11-22 23:55:11,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-22 23:55:11,535 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 74 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 23:55:11,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 534 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 23:55:11,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2023-11-22 23:55:11,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 218. [2023-11-22 23:55:11,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 176 states have (on average 1.4659090909090908) internal successors, (258), 180 states have internal predecessors, (258), 29 states have call successors, (29), 13 states have call predecessors, (29), 12 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 23:55:11,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 313 transitions. [2023-11-22 23:55:11,561 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 313 transitions. Word has length 52 [2023-11-22 23:55:11,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:55:11,561 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 313 transitions. [2023-11-22 23:55:11,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-22 23:55:11,561 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 313 transitions. [2023-11-22 23:55:11,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-22 23:55:11,563 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:55:11,563 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] [2023-11-22 23:55:11,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-22 23:55:11,563 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:55:11,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:55:11,564 INFO L85 PathProgramCache]: Analyzing trace with hash 577801368, now seen corresponding path program 1 times [2023-11-22 23:55:11,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:55:11,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213673894] [2023-11-22 23:55:11,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:55:11,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:55:11,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:11,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:55:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:11,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 23:55:11,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:11,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 23:55:11,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:11,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-22 23:55:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:11,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-22 23:55:11,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:11,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:55:11,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:55:11,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213673894] [2023-11-22 23:55:11,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213673894] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:55:11,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:55:11,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 23:55:11,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420444172] [2023-11-22 23:55:11,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:55:11,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 23:55:11,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:55:11,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 23:55:11,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 23:55:11,656 INFO L87 Difference]: Start difference. First operand 218 states and 313 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-22 23:55:12,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:55:12,063 INFO L93 Difference]: Finished difference Result 903 states and 1335 transitions. [2023-11-22 23:55:12,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 23:55:12,063 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 52 [2023-11-22 23:55:12,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:55:12,067 INFO L225 Difference]: With dead ends: 903 [2023-11-22 23:55:12,067 INFO L226 Difference]: Without dead ends: 694 [2023-11-22 23:55:12,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-11-22 23:55:12,068 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 574 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 23:55:12,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 882 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 23:55:12,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2023-11-22 23:55:12,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 409. [2023-11-22 23:55:12,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 333 states have (on average 1.4534534534534536) internal successors, (484), 339 states have internal predecessors, (484), 51 states have call successors, (51), 25 states have call predecessors, (51), 24 states have return successors, (51), 45 states have call predecessors, (51), 48 states have call successors, (51) [2023-11-22 23:55:12,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 586 transitions. [2023-11-22 23:55:12,098 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 586 transitions. Word has length 52 [2023-11-22 23:55:12,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:55:12,098 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 586 transitions. [2023-11-22 23:55:12,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-22 23:55:12,098 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 586 transitions. [2023-11-22 23:55:12,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-22 23:55:12,099 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:55:12,099 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] [2023-11-22 23:55:12,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-22 23:55:12,099 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:55:12,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:55:12,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1767986603, now seen corresponding path program 1 times [2023-11-22 23:55:12,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:55:12,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413223040] [2023-11-22 23:55:12,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:55:12,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:55:12,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:12,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:55:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:12,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 23:55:12,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:12,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 23:55:12,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:12,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 23:55:12,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:12,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-22 23:55:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:12,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:55:12,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:55:12,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413223040] [2023-11-22 23:55:12,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413223040] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:55:12,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:55:12,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 23:55:12,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823086988] [2023-11-22 23:55:12,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:55:12,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 23:55:12,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:55:12,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 23:55:12,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 23:55:12,154 INFO L87 Difference]: Start difference. First operand 409 states and 586 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-22 23:55:12,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:55:12,283 INFO L93 Difference]: Finished difference Result 880 states and 1300 transitions. [2023-11-22 23:55:12,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 23:55:12,284 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 53 [2023-11-22 23:55:12,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:55:12,286 INFO L225 Difference]: With dead ends: 880 [2023-11-22 23:55:12,286 INFO L226 Difference]: Without dead ends: 480 [2023-11-22 23:55:12,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-22 23:55:12,287 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 76 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 23:55:12,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 511 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 23:55:12,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2023-11-22 23:55:12,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 417. [2023-11-22 23:55:12,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 341 states have (on average 1.4428152492668622) internal successors, (492), 347 states have internal predecessors, (492), 51 states have call successors, (51), 25 states have call predecessors, (51), 24 states have return successors, (51), 45 states have call predecessors, (51), 48 states have call successors, (51) [2023-11-22 23:55:12,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 594 transitions. [2023-11-22 23:55:12,327 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 594 transitions. Word has length 53 [2023-11-22 23:55:12,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:55:12,328 INFO L495 AbstractCegarLoop]: Abstraction has 417 states and 594 transitions. [2023-11-22 23:55:12,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-22 23:55:12,328 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 594 transitions. [2023-11-22 23:55:12,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-22 23:55:12,328 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:55:12,329 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] [2023-11-22 23:55:12,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-22 23:55:12,329 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:55:12,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:55:12,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1825380819, now seen corresponding path program 1 times [2023-11-22 23:55:12,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:55:12,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507743046] [2023-11-22 23:55:12,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:55:12,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:55:12,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:12,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:55:12,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:12,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 23:55:12,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:12,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 23:55:12,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:12,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 23:55:12,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:12,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-22 23:55:12,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:12,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:55:12,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:55:12,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507743046] [2023-11-22 23:55:12,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507743046] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:55:12,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:55:12,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 23:55:12,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865140592] [2023-11-22 23:55:12,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:55:12,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 23:55:12,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:55:12,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 23:55:12,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 23:55:12,384 INFO L87 Difference]: Start difference. First operand 417 states and 594 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-22 23:55:12,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:55:12,508 INFO L93 Difference]: Finished difference Result 896 states and 1314 transitions. [2023-11-22 23:55:12,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 23:55:12,508 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 53 [2023-11-22 23:55:12,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:55:12,510 INFO L225 Difference]: With dead ends: 896 [2023-11-22 23:55:12,510 INFO L226 Difference]: Without dead ends: 488 [2023-11-22 23:55:12,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-22 23:55:12,512 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 54 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 23:55:12,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 503 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 23:55:12,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2023-11-22 23:55:12,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 425. [2023-11-22 23:55:12,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 349 states have (on average 1.4326647564469914) internal successors, (500), 355 states have internal predecessors, (500), 51 states have call successors, (51), 25 states have call predecessors, (51), 24 states have return successors, (51), 45 states have call predecessors, (51), 48 states have call successors, (51) [2023-11-22 23:55:12,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 602 transitions. [2023-11-22 23:55:12,532 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 602 transitions. Word has length 53 [2023-11-22 23:55:12,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:55:12,533 INFO L495 AbstractCegarLoop]: Abstraction has 425 states and 602 transitions. [2023-11-22 23:55:12,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-22 23:55:12,533 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 602 transitions. [2023-11-22 23:55:12,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-22 23:55:12,533 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:55:12,533 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] [2023-11-22 23:55:12,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-22 23:55:12,534 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:55:12,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:55:12,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1684832209, now seen corresponding path program 1 times [2023-11-22 23:55:12,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:55:12,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450305701] [2023-11-22 23:55:12,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:55:12,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:55:12,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:12,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:55:12,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:12,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 23:55:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:12,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 23:55:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:12,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 23:55:12,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:12,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-22 23:55:12,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:12,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:55:12,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:55:12,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450305701] [2023-11-22 23:55:12,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450305701] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:55:12,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:55:12,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 23:55:12,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628030964] [2023-11-22 23:55:12,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:55:12,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 23:55:12,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:55:12,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 23:55:12,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-22 23:55:12,603 INFO L87 Difference]: Start difference. First operand 425 states and 602 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 23:55:12,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:55:12,793 INFO L93 Difference]: Finished difference Result 1333 states and 1903 transitions. [2023-11-22 23:55:12,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 23:55:12,794 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 53 [2023-11-22 23:55:12,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:55:12,797 INFO L225 Difference]: With dead ends: 1333 [2023-11-22 23:55:12,798 INFO L226 Difference]: Without dead ends: 918 [2023-11-22 23:55:12,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-22 23:55:12,800 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 234 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 23:55:12,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 718 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 23:55:12,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2023-11-22 23:55:12,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 792. [2023-11-22 23:55:12,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 652 states have (on average 1.4233128834355828) internal successors, (928), 666 states have internal predecessors, (928), 91 states have call successors, (91), 49 states have call predecessors, (91), 48 states have return successors, (93), 77 states have call predecessors, (93), 88 states have call successors, (93) [2023-11-22 23:55:12,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1112 transitions. [2023-11-22 23:55:12,869 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1112 transitions. Word has length 53 [2023-11-22 23:55:12,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:55:12,870 INFO L495 AbstractCegarLoop]: Abstraction has 792 states and 1112 transitions. [2023-11-22 23:55:12,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 23:55:12,874 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1112 transitions. [2023-11-22 23:55:12,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-22 23:55:12,875 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:55:12,875 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:55:12,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-22 23:55:12,875 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:55:12,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:55:12,876 INFO L85 PathProgramCache]: Analyzing trace with hash -657803255, now seen corresponding path program 1 times [2023-11-22 23:55:12,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:55:12,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215317126] [2023-11-22 23:55:12,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:55:12,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:55:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:12,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:55:12,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:12,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 23:55:12,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:12,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 23:55:12,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:12,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 23:55:12,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:12,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-22 23:55:12,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:12,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 23:55:12,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:12,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:55:12,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:55:12,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215317126] [2023-11-22 23:55:12,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215317126] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:55:12,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697587038] [2023-11-22 23:55:12,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:55:12,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:55:12,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:55:12,983 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) [2023-11-22 23:55:12,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-22 23:55:13,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:13,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 23:55:13,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:55:13,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:55:13,160 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 23:55:13,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:55:13,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697587038] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 23:55:13,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 23:55:13,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 5] total 8 [2023-11-22 23:55:13,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055989770] [2023-11-22 23:55:13,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:55:13,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 23:55:13,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:55:13,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 23:55:13,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-22 23:55:13,235 INFO L87 Difference]: Start difference. First operand 792 states and 1112 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 23:55:13,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:55:13,400 INFO L93 Difference]: Finished difference Result 2202 states and 3110 transitions. [2023-11-22 23:55:13,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 23:55:13,401 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 64 [2023-11-22 23:55:13,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:55:13,406 INFO L225 Difference]: With dead ends: 2202 [2023-11-22 23:55:13,406 INFO L226 Difference]: Without dead ends: 1509 [2023-11-22 23:55:13,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-22 23:55:13,409 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 275 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 23:55:13,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 1121 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 23:55:13,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2023-11-22 23:55:13,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 1480. [2023-11-22 23:55:13,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1480 states, 1224 states have (on average 1.4199346405228759) internal successors, (1738), 1247 states have internal predecessors, (1738), 165 states have call successors, (165), 91 states have call predecessors, (165), 90 states have return successors, (172), 142 states have call predecessors, (172), 162 states have call successors, (172) [2023-11-22 23:55:13,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1480 states to 1480 states and 2075 transitions. [2023-11-22 23:55:13,497 INFO L78 Accepts]: Start accepts. Automaton has 1480 states and 2075 transitions. Word has length 64 [2023-11-22 23:55:13,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:55:13,497 INFO L495 AbstractCegarLoop]: Abstraction has 1480 states and 2075 transitions. [2023-11-22 23:55:13,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 23:55:13,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1480 states and 2075 transitions. [2023-11-22 23:55:13,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-22 23:55:13,498 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:55:13,498 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] [2023-11-22 23:55:13,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-22 23:55:13,704 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 [2023-11-22 23:55:13,705 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:55:13,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:55:13,705 INFO L85 PathProgramCache]: Analyzing trace with hash -486902863, now seen corresponding path program 1 times [2023-11-22 23:55:13,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:55:13,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939931309] [2023-11-22 23:55:13,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:55:13,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:55:13,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:13,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:55:13,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:13,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 23:55:13,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:13,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 23:55:13,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:13,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 23:55:13,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:13,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-22 23:55:13,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:13,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 23:55:13,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:13,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:55:13,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:55:13,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939931309] [2023-11-22 23:55:13,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939931309] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:55:13,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:55:13,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 23:55:13,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737993453] [2023-11-22 23:55:13,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:55:13,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 23:55:13,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:55:13,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 23:55:13,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 23:55:13,767 INFO L87 Difference]: Start difference. First operand 1480 states and 2075 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-22 23:55:14,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:55:14,129 INFO L93 Difference]: Finished difference Result 4662 states and 6646 transitions. [2023-11-22 23:55:14,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-22 23:55:14,129 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 66 [2023-11-22 23:55:14,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:55:14,141 INFO L225 Difference]: With dead ends: 4662 [2023-11-22 23:55:14,141 INFO L226 Difference]: Without dead ends: 3192 [2023-11-22 23:55:14,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-11-22 23:55:14,145 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 349 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 23:55:14,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 596 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 23:55:14,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3192 states. [2023-11-22 23:55:14,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3192 to 2904. [2023-11-22 23:55:14,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2904 states, 2427 states have (on average 1.4009064688916357) internal successors, (3400), 2468 states have internal predecessors, (3400), 292 states have call successors, (292), 170 states have call predecessors, (292), 184 states have return successors, (401), 267 states have call predecessors, (401), 289 states have call successors, (401) [2023-11-22 23:55:14,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2904 states to 2904 states and 4093 transitions. [2023-11-22 23:55:14,282 INFO L78 Accepts]: Start accepts. Automaton has 2904 states and 4093 transitions. Word has length 66 [2023-11-22 23:55:14,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:55:14,282 INFO L495 AbstractCegarLoop]: Abstraction has 2904 states and 4093 transitions. [2023-11-22 23:55:14,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-22 23:55:14,283 INFO L276 IsEmpty]: Start isEmpty. Operand 2904 states and 4093 transitions. [2023-11-22 23:55:14,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-22 23:55:14,284 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:55:14,284 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] [2023-11-22 23:55:14,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-22 23:55:14,284 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:55:14,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:55:14,284 INFO L85 PathProgramCache]: Analyzing trace with hash -285078929, now seen corresponding path program 1 times [2023-11-22 23:55:14,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:55:14,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098512330] [2023-11-22 23:55:14,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:55:14,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:55:14,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:14,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:55:14,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:14,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 23:55:14,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:14,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 23:55:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:14,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 23:55:14,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:14,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-22 23:55:14,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:14,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 23:55:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:14,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:55:14,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:55:14,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098512330] [2023-11-22 23:55:14,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098512330] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:55:14,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:55:14,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 23:55:14,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231050253] [2023-11-22 23:55:14,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:55:14,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 23:55:14,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:55:14,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 23:55:14,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 23:55:14,316 INFO L87 Difference]: Start difference. First operand 2904 states and 4093 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-22 23:55:14,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:55:14,557 INFO L93 Difference]: Finished difference Result 6105 states and 8643 transitions. [2023-11-22 23:55:14,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 23:55:14,557 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 66 [2023-11-22 23:55:14,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:55:14,568 INFO L225 Difference]: With dead ends: 6105 [2023-11-22 23:55:14,568 INFO L226 Difference]: Without dead ends: 3210 [2023-11-22 23:55:14,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-22 23:55:14,574 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 284 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 23:55:14,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 254 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 23:55:14,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3210 states. [2023-11-22 23:55:14,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3210 to 2899. [2023-11-22 23:55:14,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2899 states, 2425 states have (on average 1.4004123711340206) internal successors, (3396), 2465 states have internal predecessors, (3396), 289 states have call successors, (289), 170 states have call predecessors, (289), 184 states have return successors, (397), 264 states have call predecessors, (397), 286 states have call successors, (397) [2023-11-22 23:55:14,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2899 states to 2899 states and 4082 transitions. [2023-11-22 23:55:14,698 INFO L78 Accepts]: Start accepts. Automaton has 2899 states and 4082 transitions. Word has length 66 [2023-11-22 23:55:14,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:55:14,699 INFO L495 AbstractCegarLoop]: Abstraction has 2899 states and 4082 transitions. [2023-11-22 23:55:14,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-22 23:55:14,699 INFO L276 IsEmpty]: Start isEmpty. Operand 2899 states and 4082 transitions. [2023-11-22 23:55:14,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-22 23:55:14,700 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:55:14,700 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] [2023-11-22 23:55:14,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-22 23:55:14,700 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:55:14,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:55:14,701 INFO L85 PathProgramCache]: Analyzing trace with hash -421143662, now seen corresponding path program 1 times [2023-11-22 23:55:14,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:55:14,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687528413] [2023-11-22 23:55:14,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:55:14,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:55:14,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:14,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:55:14,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:14,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 23:55:14,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:14,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 23:55:14,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:14,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 23:55:14,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:14,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-22 23:55:14,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:14,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 23:55:14,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:14,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:55:14,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:55:14,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687528413] [2023-11-22 23:55:14,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687528413] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:55:14,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:55:14,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 23:55:14,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512789473] [2023-11-22 23:55:14,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:55:14,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 23:55:14,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:55:14,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 23:55:14,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 23:55:14,743 INFO L87 Difference]: Start difference. First operand 2899 states and 4082 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 23:55:15,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:55:15,118 INFO L93 Difference]: Finished difference Result 8395 states and 11934 transitions. [2023-11-22 23:55:15,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 23:55:15,118 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 67 [2023-11-22 23:55:15,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:55:15,134 INFO L225 Difference]: With dead ends: 8395 [2023-11-22 23:55:15,135 INFO L226 Difference]: Without dead ends: 5505 [2023-11-22 23:55:15,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-22 23:55:15,141 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 346 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 23:55:15,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 392 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 23:55:15,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5505 states. [2023-11-22 23:55:15,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5505 to 4578. [2023-11-22 23:55:15,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4578 states, 3795 states have (on average 1.361528326745718) internal successors, (5167), 3859 states have internal predecessors, (5167), 475 states have call successors, (475), 283 states have call predecessors, (475), 307 states have return successors, (665), 436 states have call predecessors, (665), 472 states have call successors, (665) [2023-11-22 23:55:15,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4578 states to 4578 states and 6307 transitions. [2023-11-22 23:55:15,321 INFO L78 Accepts]: Start accepts. Automaton has 4578 states and 6307 transitions. Word has length 67 [2023-11-22 23:55:15,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:55:15,321 INFO L495 AbstractCegarLoop]: Abstraction has 4578 states and 6307 transitions. [2023-11-22 23:55:15,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 23:55:15,322 INFO L276 IsEmpty]: Start isEmpty. Operand 4578 states and 6307 transitions. [2023-11-22 23:55:15,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-22 23:55:15,323 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:55:15,323 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] [2023-11-22 23:55:15,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-22 23:55:15,323 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:55:15,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:55:15,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1085136470, now seen corresponding path program 1 times [2023-11-22 23:55:15,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:55:15,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37109750] [2023-11-22 23:55:15,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:55:15,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:55:15,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:15,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:55:15,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:15,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 23:55:15,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:15,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 23:55:15,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:15,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 23:55:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:15,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-22 23:55:15,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:15,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 23:55:15,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:15,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:55:15,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:55:15,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37109750] [2023-11-22 23:55:15,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37109750] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:55:15,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:55:15,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-22 23:55:15,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194899944] [2023-11-22 23:55:15,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:55:15,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 23:55:15,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:55:15,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 23:55:15,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-22 23:55:15,410 INFO L87 Difference]: Start difference. First operand 4578 states and 6307 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 23:55:16,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:55:16,031 INFO L93 Difference]: Finished difference Result 11921 states and 16481 transitions. [2023-11-22 23:55:16,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-22 23:55:16,032 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 68 [2023-11-22 23:55:16,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:55:16,057 INFO L225 Difference]: With dead ends: 11921 [2023-11-22 23:55:16,057 INFO L226 Difference]: Without dead ends: 7510 [2023-11-22 23:55:16,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2023-11-22 23:55:16,068 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 712 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 23:55:16,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 471 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 23:55:16,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7510 states. [2023-11-22 23:55:16,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7510 to 6716. [2023-11-22 23:55:16,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6716 states, 5581 states have (on average 1.3619423042465508) internal successors, (7601), 5661 states have internal predecessors, (7601), 687 states have call successors, (687), 411 states have call predecessors, (687), 447 states have return successors, (971), 644 states have call predecessors, (971), 684 states have call successors, (971) [2023-11-22 23:55:16,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6716 states to 6716 states and 9259 transitions. [2023-11-22 23:55:16,408 INFO L78 Accepts]: Start accepts. Automaton has 6716 states and 9259 transitions. Word has length 68 [2023-11-22 23:55:16,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:55:16,408 INFO L495 AbstractCegarLoop]: Abstraction has 6716 states and 9259 transitions. [2023-11-22 23:55:16,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 23:55:16,409 INFO L276 IsEmpty]: Start isEmpty. Operand 6716 states and 9259 transitions. [2023-11-22 23:55:16,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-22 23:55:16,410 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:55:16,410 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:55:16,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-22 23:55:16,411 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:55:16,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:55:16,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1794577429, now seen corresponding path program 1 times [2023-11-22 23:55:16,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:55:16,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136725687] [2023-11-22 23:55:16,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:55:16,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:55:16,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:16,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:55:16,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:16,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 23:55:16,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:16,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 23:55:16,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:16,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 23:55:16,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:16,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-22 23:55:16,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:16,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 23:55:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:16,469 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-22 23:55:16,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:55:16,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136725687] [2023-11-22 23:55:16,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136725687] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:55:16,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356065908] [2023-11-22 23:55:16,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:55:16,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:55:16,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:55:16,481 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) [2023-11-22 23:55:16,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-22 23:55:16,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:16,540 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-22 23:55:16,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:55:16,566 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:55:16,566 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:55:16,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356065908] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:55:16,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 23:55:16,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 23:55:16,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013553263] [2023-11-22 23:55:16,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:55:16,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 23:55:16,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:55:16,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 23:55:16,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 23:55:16,568 INFO L87 Difference]: Start difference. First operand 6716 states and 9259 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-22 23:55:16,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:55:16,956 INFO L93 Difference]: Finished difference Result 17623 states and 24569 transitions. [2023-11-22 23:55:16,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 23:55:16,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 71 [2023-11-22 23:55:16,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:55:16,998 INFO L225 Difference]: With dead ends: 17623 [2023-11-22 23:55:16,998 INFO L226 Difference]: Without dead ends: 10917 [2023-11-22 23:55:17,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 23:55:17,012 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 122 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 23:55:17,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 425 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 23:55:17,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10917 states. [2023-11-22 23:55:17,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10917 to 10407. [2023-11-22 23:55:17,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10407 states, 8594 states have (on average 1.351873400046544) internal successors, (11618), 8724 states have internal predecessors, (11618), 1097 states have call successors, (1097), 657 states have call predecessors, (1097), 715 states have return successors, (1717), 1027 states have call predecessors, (1717), 1094 states have call successors, (1717) [2023-11-22 23:55:17,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10407 states to 10407 states and 14432 transitions. [2023-11-22 23:55:17,443 INFO L78 Accepts]: Start accepts. Automaton has 10407 states and 14432 transitions. Word has length 71 [2023-11-22 23:55:17,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:55:17,443 INFO L495 AbstractCegarLoop]: Abstraction has 10407 states and 14432 transitions. [2023-11-22 23:55:17,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-22 23:55:17,443 INFO L276 IsEmpty]: Start isEmpty. Operand 10407 states and 14432 transitions. [2023-11-22 23:55:17,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-22 23:55:17,446 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:55:17,446 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:55:17,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-22 23:55:17,652 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,SelfDestructingSolverStorable12 [2023-11-22 23:55:17,652 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:55:17,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:55:17,652 INFO L85 PathProgramCache]: Analyzing trace with hash -913772689, now seen corresponding path program 1 times [2023-11-22 23:55:17,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:55:17,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785359905] [2023-11-22 23:55:17,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:55:17,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:55:17,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:17,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:55:17,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:17,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 23:55:17,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:17,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 23:55:17,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:17,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 23:55:17,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:17,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-22 23:55:17,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:17,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 23:55:17,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:17,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-22 23:55:17,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:17,712 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-22 23:55:17,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:55:17,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785359905] [2023-11-22 23:55:17,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785359905] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:55:17,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:55:17,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-22 23:55:17,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988109088] [2023-11-22 23:55:17,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:55:17,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 23:55:17,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:55:17,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 23:55:17,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-22 23:55:17,714 INFO L87 Difference]: Start difference. First operand 10407 states and 14432 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-22 23:55:18,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:55:18,901 INFO L93 Difference]: Finished difference Result 26070 states and 36370 transitions. [2023-11-22 23:55:18,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-22 23:55:18,902 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 77 [2023-11-22 23:55:18,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:55:18,947 INFO L225 Difference]: With dead ends: 26070 [2023-11-22 23:55:18,948 INFO L226 Difference]: Without dead ends: 16996 [2023-11-22 23:55:18,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-11-22 23:55:18,972 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 746 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-22 23:55:18,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 925 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 834 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-22 23:55:18,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16996 states. [2023-11-22 23:55:19,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16996 to 14303. [2023-11-22 23:55:19,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14303 states, 11894 states have (on average 1.3632924163443754) internal successors, (16215), 12104 states have internal predecessors, (16215), 1425 states have call successors, (1425), 853 states have call predecessors, (1425), 983 states have return successors, (2443), 1347 states have call predecessors, (2443), 1422 states have call successors, (2443) [2023-11-22 23:55:19,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14303 states to 14303 states and 20083 transitions. [2023-11-22 23:55:19,585 INFO L78 Accepts]: Start accepts. Automaton has 14303 states and 20083 transitions. Word has length 77 [2023-11-22 23:55:19,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:55:19,585 INFO L495 AbstractCegarLoop]: Abstraction has 14303 states and 20083 transitions. [2023-11-22 23:55:19,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-22 23:55:19,585 INFO L276 IsEmpty]: Start isEmpty. Operand 14303 states and 20083 transitions. [2023-11-22 23:55:19,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-22 23:55:19,588 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:55:19,588 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:55:19,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-22 23:55:19,589 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:55:19,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:55:19,589 INFO L85 PathProgramCache]: Analyzing trace with hash -725910813, now seen corresponding path program 1 times [2023-11-22 23:55:19,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:55:19,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106316968] [2023-11-22 23:55:19,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:55:19,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:55:19,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:19,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:55:19,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:19,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 23:55:19,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:19,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 23:55:19,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:19,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 23:55:19,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:19,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-22 23:55:19,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:19,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 23:55:19,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:19,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-22 23:55:19,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:19,685 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-22 23:55:19,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:55:19,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106316968] [2023-11-22 23:55:19,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106316968] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:55:19,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:55:19,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-22 23:55:19,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103500594] [2023-11-22 23:55:19,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:55:19,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 23:55:19,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:55:19,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 23:55:19,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-22 23:55:19,687 INFO L87 Difference]: Start difference. First operand 14303 states and 20083 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-22 23:55:21,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:55:21,141 INFO L93 Difference]: Finished difference Result 37271 states and 52445 transitions. [2023-11-22 23:55:21,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-22 23:55:21,142 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 80 [2023-11-22 23:55:21,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:55:21,210 INFO L225 Difference]: With dead ends: 37271 [2023-11-22 23:55:21,211 INFO L226 Difference]: Without dead ends: 24301 [2023-11-22 23:55:21,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2023-11-22 23:55:21,243 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 839 mSDsluCounter, 977 mSDsCounter, 0 mSdLazyCounter, 1317 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 1428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-22 23:55:21,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [871 Valid, 1248 Invalid, 1428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1317 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-22 23:55:21,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24301 states. [2023-11-22 23:55:22,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24301 to 20617. [2023-11-22 23:55:22,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20617 states, 17200 states have (on average 1.369767441860465) internal successors, (23560), 17480 states have internal predecessors, (23560), 2016 states have call successors, (2016), 1207 states have call predecessors, (2016), 1400 states have return successors, (3536), 1931 states have call predecessors, (3536), 2013 states have call successors, (3536) [2023-11-22 23:55:22,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20617 states to 20617 states and 29112 transitions. [2023-11-22 23:55:22,246 INFO L78 Accepts]: Start accepts. Automaton has 20617 states and 29112 transitions. Word has length 80 [2023-11-22 23:55:22,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:55:22,247 INFO L495 AbstractCegarLoop]: Abstraction has 20617 states and 29112 transitions. [2023-11-22 23:55:22,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-22 23:55:22,247 INFO L276 IsEmpty]: Start isEmpty. Operand 20617 states and 29112 transitions. [2023-11-22 23:55:22,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-22 23:55:22,250 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:55:22,250 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:55:22,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-22 23:55:22,251 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:55:22,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:55:22,251 INFO L85 PathProgramCache]: Analyzing trace with hash 980379788, now seen corresponding path program 1 times [2023-11-22 23:55:22,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:55:22,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346984465] [2023-11-22 23:55:22,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:55:22,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:55:22,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:22,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:55:22,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:22,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 23:55:22,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:22,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 23:55:22,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:22,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 23:55:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:22,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-22 23:55:22,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:22,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 23:55:22,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:22,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 23:55:22,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:22,313 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-22 23:55:22,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:55:22,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346984465] [2023-11-22 23:55:22,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346984465] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:55:22,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:55:22,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-22 23:55:22,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114848776] [2023-11-22 23:55:22,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:55:22,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 23:55:22,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:55:22,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 23:55:22,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-22 23:55:22,316 INFO L87 Difference]: Start difference. First operand 20617 states and 29112 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-22 23:55:24,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:55:24,189 INFO L93 Difference]: Finished difference Result 62772 states and 90180 transitions. [2023-11-22 23:55:24,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-22 23:55:24,189 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 86 [2023-11-22 23:55:24,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:55:24,303 INFO L225 Difference]: With dead ends: 62772 [2023-11-22 23:55:24,303 INFO L226 Difference]: Without dead ends: 42169 [2023-11-22 23:55:24,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2023-11-22 23:55:24,343 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 1073 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1088 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 23:55:24,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1088 Valid, 818 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 23:55:24,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42169 states. [2023-11-22 23:55:25,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42169 to 39663. [2023-11-22 23:55:25,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39663 states, 32956 states have (on average 1.3404842820730671) internal successors, (44177), 33491 states have internal predecessors, (44177), 3900 states have call successors, (3900), 2376 states have call predecessors, (3900), 2806 states have return successors, (7008), 3797 states have call predecessors, (7008), 3897 states have call successors, (7008) [2023-11-22 23:55:25,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39663 states to 39663 states and 55085 transitions. [2023-11-22 23:55:25,989 INFO L78 Accepts]: Start accepts. Automaton has 39663 states and 55085 transitions. Word has length 86 [2023-11-22 23:55:25,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:55:25,990 INFO L495 AbstractCegarLoop]: Abstraction has 39663 states and 55085 transitions. [2023-11-22 23:55:25,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-22 23:55:25,990 INFO L276 IsEmpty]: Start isEmpty. Operand 39663 states and 55085 transitions. [2023-11-22 23:55:25,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-22 23:55:25,994 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:55:25,994 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:55:25,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-22 23:55:25,995 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:55:25,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:55:25,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1303924748, now seen corresponding path program 1 times [2023-11-22 23:55:25,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:55:25,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514032524] [2023-11-22 23:55:25,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:55:25,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:55:26,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:26,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:55:26,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:26,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 23:55:26,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:26,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 23:55:26,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:26,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 23:55:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:26,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-22 23:55:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:26,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 23:55:26,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:26,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 23:55:26,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:26,070 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-22 23:55:26,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:55:26,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514032524] [2023-11-22 23:55:26,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514032524] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:55:26,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121470815] [2023-11-22 23:55:26,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:55:26,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:55:26,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:55:26,072 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) [2023-11-22 23:55:26,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-22 23:55:26,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:26,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-22 23:55:26,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:55:26,478 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:55:26,478 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 23:55:26,592 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-22 23:55:26,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121470815] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 23:55:26,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 23:55:26,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 6] total 15 [2023-11-22 23:55:26,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392900034] [2023-11-22 23:55:26,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:55:26,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 23:55:26,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:55:26,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 23:55:26,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-11-22 23:55:26,595 INFO L87 Difference]: Start difference. First operand 39663 states and 55085 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-22 23:55:28,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:55:28,369 INFO L93 Difference]: Finished difference Result 42099 states and 58169 transitions. [2023-11-22 23:55:28,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-22 23:55:28,370 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 87 [2023-11-22 23:55:28,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:55:28,484 INFO L225 Difference]: With dead ends: 42099 [2023-11-22 23:55:28,484 INFO L226 Difference]: Without dead ends: 42096 [2023-11-22 23:55:28,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 180 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2023-11-22 23:55:28,499 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 375 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 23:55:28,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 788 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 23:55:28,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42096 states. [2023-11-22 23:55:30,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42096 to 40635. [2023-11-22 23:55:30,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40635 states, 33747 states have (on average 1.337155895338845) internal successors, (45125), 34300 states have internal predecessors, (45125), 4006 states have call successors, (4006), 2443 states have call predecessors, (4006), 2881 states have return successors, (7155), 3893 states have call predecessors, (7155), 4003 states have call successors, (7155) [2023-11-22 23:55:30,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40635 states to 40635 states and 56286 transitions. [2023-11-22 23:55:30,192 INFO L78 Accepts]: Start accepts. Automaton has 40635 states and 56286 transitions. Word has length 87 [2023-11-22 23:55:30,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:55:30,192 INFO L495 AbstractCegarLoop]: Abstraction has 40635 states and 56286 transitions. [2023-11-22 23:55:30,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-22 23:55:30,193 INFO L276 IsEmpty]: Start isEmpty. Operand 40635 states and 56286 transitions. [2023-11-22 23:55:30,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-22 23:55:30,198 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:55:30,198 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:55:30,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-22 23:55:30,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:55:30,429 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:55:30,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:55:30,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1824724012, now seen corresponding path program 1 times [2023-11-22 23:55:30,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:55:30,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891805928] [2023-11-22 23:55:30,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:55:30,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:55:30,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:30,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:55:30,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:30,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 23:55:30,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:30,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 23:55:30,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:30,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 23:55:30,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:30,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-22 23:55:30,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:30,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 23:55:30,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:30,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-22 23:55:30,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:30,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-22 23:55:30,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:30,514 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-22 23:55:30,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:55:30,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891805928] [2023-11-22 23:55:30,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891805928] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:55:30,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:55:30,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 23:55:30,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888978027] [2023-11-22 23:55:30,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:55:30,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 23:55:30,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:55:30,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 23:55:30,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 23:55:30,515 INFO L87 Difference]: Start difference. First operand 40635 states and 56286 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 4 states have internal predecessors, (67), 3 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-22 23:55:32,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:55:32,792 INFO L93 Difference]: Finished difference Result 84591 states and 117108 transitions. [2023-11-22 23:55:32,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-22 23:55:32,793 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 4 states have internal predecessors, (67), 3 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 89 [2023-11-22 23:55:32,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:55:32,906 INFO L225 Difference]: With dead ends: 84591 [2023-11-22 23:55:32,907 INFO L226 Difference]: Without dead ends: 43970 [2023-11-22 23:55:32,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-11-22 23:55:32,958 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 346 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 23:55:32,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 442 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 23:55:32,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43970 states. [2023-11-22 23:55:34,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43970 to 40579. [2023-11-22 23:55:34,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40579 states, 33579 states have (on average 1.3273474492986688) internal successors, (44571), 34244 states have internal predecessors, (44571), 4006 states have call successors, (4006), 2443 states have call predecessors, (4006), 2993 states have return successors, (6707), 3893 states have call predecessors, (6707), 4003 states have call successors, (6707) [2023-11-22 23:55:34,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40579 states to 40579 states and 55284 transitions. [2023-11-22 23:55:34,742 INFO L78 Accepts]: Start accepts. Automaton has 40579 states and 55284 transitions. Word has length 89 [2023-11-22 23:55:34,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:55:34,743 INFO L495 AbstractCegarLoop]: Abstraction has 40579 states and 55284 transitions. [2023-11-22 23:55:34,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 4 states have internal predecessors, (67), 3 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-22 23:55:34,743 INFO L276 IsEmpty]: Start isEmpty. Operand 40579 states and 55284 transitions. [2023-11-22 23:55:34,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-22 23:55:34,748 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:55:34,748 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:55:34,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-22 23:55:34,748 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:55:34,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:55:34,749 INFO L85 PathProgramCache]: Analyzing trace with hash -903485334, now seen corresponding path program 1 times [2023-11-22 23:55:34,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:55:34,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858260871] [2023-11-22 23:55:34,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:55:34,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:55:34,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:34,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:55:34,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:34,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 23:55:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:34,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 23:55:34,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:34,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 23:55:34,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:34,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-22 23:55:34,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:34,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 23:55:34,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:34,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-22 23:55:34,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:34,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-22 23:55:34,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:34,787 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-22 23:55:34,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:55:34,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858260871] [2023-11-22 23:55:34,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858260871] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:55:34,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:55:34,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 23:55:34,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584508380] [2023-11-22 23:55:34,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:55:34,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 23:55:34,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:55:34,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 23:55:34,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 23:55:34,789 INFO L87 Difference]: Start difference. First operand 40579 states and 55284 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-22 23:55:36,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:55:36,681 INFO L93 Difference]: Finished difference Result 45987 states and 62885 transitions. [2023-11-22 23:55:36,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 23:55:36,682 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 89 [2023-11-22 23:55:36,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:55:36,790 INFO L225 Difference]: With dead ends: 45987 [2023-11-22 23:55:36,790 INFO L226 Difference]: Without dead ends: 43767 [2023-11-22 23:55:36,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-22 23:55:36,807 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 288 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 23:55:36,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 252 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 23:55:36,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43767 states. [2023-11-22 23:55:38,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43767 to 40433. [2023-11-22 23:55:38,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40433 states, 33463 states have (on average 1.3276454591638527) internal successors, (44427), 34126 states have internal predecessors, (44427), 3987 states have call successors, (3987), 2433 states have call predecessors, (3987), 2982 states have return successors, (6686), 3874 states have call predecessors, (6686), 3984 states have call successors, (6686) [2023-11-22 23:55:38,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40433 states to 40433 states and 55100 transitions. [2023-11-22 23:55:38,645 INFO L78 Accepts]: Start accepts. Automaton has 40433 states and 55100 transitions. Word has length 89 [2023-11-22 23:55:38,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:55:38,646 INFO L495 AbstractCegarLoop]: Abstraction has 40433 states and 55100 transitions. [2023-11-22 23:55:38,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-22 23:55:38,646 INFO L276 IsEmpty]: Start isEmpty. Operand 40433 states and 55100 transitions. [2023-11-22 23:55:38,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-22 23:55:38,652 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:55:38,652 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:55:38,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-22 23:55:38,652 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:55:38,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:55:38,653 INFO L85 PathProgramCache]: Analyzing trace with hash 344553963, now seen corresponding path program 1 times [2023-11-22 23:55:38,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:55:38,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542126210] [2023-11-22 23:55:38,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:55:38,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:55:38,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:38,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:55:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:38,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 23:55:38,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:38,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 23:55:38,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:38,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 23:55:38,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:38,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-22 23:55:38,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:38,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 23:55:38,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:38,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-22 23:55:38,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:38,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-22 23:55:38,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:38,712 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-22 23:55:38,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:55:38,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542126210] [2023-11-22 23:55:38,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542126210] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:55:38,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:55:38,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-22 23:55:38,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945327187] [2023-11-22 23:55:38,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:55:38,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 23:55:38,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:55:38,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 23:55:38,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-22 23:55:38,714 INFO L87 Difference]: Start difference. First operand 40433 states and 55100 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 4 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-22 23:55:40,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:55:40,997 INFO L93 Difference]: Finished difference Result 83379 states and 113683 transitions. [2023-11-22 23:55:40,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-22 23:55:40,997 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 4 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 90 [2023-11-22 23:55:40,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:55:41,114 INFO L225 Difference]: With dead ends: 83379 [2023-11-22 23:55:41,114 INFO L226 Difference]: Without dead ends: 42956 [2023-11-22 23:55:41,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2023-11-22 23:55:41,172 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 1154 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1169 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 23:55:41,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1169 Valid, 789 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 23:55:41,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42956 states. [2023-11-22 23:55:43,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42956 to 40548. [2023-11-22 23:55:43,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40548 states, 33578 states have (on average 1.3185716838406099) internal successors, (44275), 34241 states have internal predecessors, (44275), 3987 states have call successors, (3987), 2433 states have call predecessors, (3987), 2982 states have return successors, (6350), 3874 states have call predecessors, (6350), 3984 states have call successors, (6350) [2023-11-22 23:55:43,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40548 states to 40548 states and 54612 transitions. [2023-11-22 23:55:43,317 INFO L78 Accepts]: Start accepts. Automaton has 40548 states and 54612 transitions. Word has length 90 [2023-11-22 23:55:43,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:55:43,317 INFO L495 AbstractCegarLoop]: Abstraction has 40548 states and 54612 transitions. [2023-11-22 23:55:43,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 4 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-22 23:55:43,318 INFO L276 IsEmpty]: Start isEmpty. Operand 40548 states and 54612 transitions. [2023-11-22 23:55:43,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-22 23:55:43,485 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:55:43,485 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:55:43,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-22 23:55:43,486 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:55:43,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:55:43,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1398325679, now seen corresponding path program 1 times [2023-11-22 23:55:43,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:55:43,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277050385] [2023-11-22 23:55:43,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:55:43,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:55:43,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:43,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:55:43,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:43,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 23:55:43,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:43,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 23:55:43,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:43,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 23:55:43,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:43,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-22 23:55:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:43,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 23:55:43,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:43,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-22 23:55:43,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:43,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-22 23:55:43,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:43,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-22 23:55:43,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:55:43,541 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-22 23:55:43,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:55:43,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277050385] [2023-11-22 23:55:43,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277050385] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:55:43,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:55:43,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 23:55:43,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242705014] [2023-11-22 23:55:43,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:55:43,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 23:55:43,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:55:43,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 23:55:43,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 23:55:43,543 INFO L87 Difference]: Start difference. First operand 40548 states and 54612 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9)