./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem16_label27.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem16_label27.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 b8b419a7bad122135c5018a0fcde1c414772cf931d8588f0cdb1172e002f61ab --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:07:14,952 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:07:15,039 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 23:07:15,043 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:07:15,044 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:07:15,072 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:07:15,072 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:07:15,073 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:07:15,074 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:07:15,079 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:07:15,081 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:07:15,082 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:07:15,082 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:07:15,084 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:07:15,084 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:07:15,085 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:07:15,085 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:07:15,086 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:07:15,086 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:07:15,086 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:07:15,087 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:07:15,088 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:07:15,088 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:07:15,090 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:07:15,090 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:07:15,091 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:07:15,092 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:07:15,092 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:07:15,093 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:07:15,093 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:07:15,095 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:07:15,095 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:07:15,095 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:07:15,096 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:07:15,096 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:07:15,096 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:07:15,096 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:07:15,097 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:07:15,097 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:07:15,097 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8b419a7bad122135c5018a0fcde1c414772cf931d8588f0cdb1172e002f61ab [2023-11-06 23:07:15,447 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:07:15,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:07:15,479 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:07:15,480 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:07:15,481 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:07:15,482 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/eca-rers2012/Problem16_label27.c [2023-11-06 23:07:18,716 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:07:19,168 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:07:19,169 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/sv-benchmarks/c/eca-rers2012/Problem16_label27.c [2023-11-06 23:07:19,197 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/data/703e74abf/a877db60087a46e4b7f2ed831638e035/FLAGf3aa4ea2d [2023-11-06 23:07:19,218 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/data/703e74abf/a877db60087a46e4b7f2ed831638e035 [2023-11-06 23:07:19,229 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:07:19,233 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:07:19,238 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:07:19,238 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:07:19,245 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:07:19,245 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:07:19" (1/1) ... [2023-11-06 23:07:19,247 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75536489 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:19, skipping insertion in model container [2023-11-06 23:07:19,247 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:07:19" (1/1) ... [2023-11-06 23:07:19,360 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:07:19,570 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/sv-benchmarks/c/eca-rers2012/Problem16_label27.c[1550,1563] [2023-11-06 23:07:20,112 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:07:20,126 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:07:20,152 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/sv-benchmarks/c/eca-rers2012/Problem16_label27.c[1550,1563] [2023-11-06 23:07:20,453 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:07:20,475 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:07:20,475 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:20 WrapperNode [2023-11-06 23:07:20,476 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:07:20,477 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:07:20,477 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:07:20,478 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:07:20,486 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:20" (1/1) ... [2023-11-06 23:07:20,522 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:20" (1/1) ... [2023-11-06 23:07:20,675 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1769 [2023-11-06 23:07:20,675 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:07:20,676 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:07:20,676 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:07:20,677 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:07:20,687 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:20" (1/1) ... [2023-11-06 23:07:20,687 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:20" (1/1) ... [2023-11-06 23:07:20,698 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:20" (1/1) ... [2023-11-06 23:07:20,699 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:20" (1/1) ... [2023-11-06 23:07:20,762 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:20" (1/1) ... [2023-11-06 23:07:20,787 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:20" (1/1) ... [2023-11-06 23:07:20,814 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:20" (1/1) ... [2023-11-06 23:07:20,826 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:20" (1/1) ... [2023-11-06 23:07:20,851 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:07:20,853 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:07:20,853 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:07:20,853 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:07:20,854 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:20" (1/1) ... [2023-11-06 23:07:20,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:07:20,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:20,890 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:07:20,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:07:20,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:07:20,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:07:20,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:07:20,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:07:21,025 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:07:21,027 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:07:23,391 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:07:23,403 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:07:23,403 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 23:07:23,406 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:07:23 BoogieIcfgContainer [2023-11-06 23:07:23,406 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:07:23,409 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:07:23,409 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:07:23,412 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:07:23,413 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:07:19" (1/3) ... [2023-11-06 23:07:23,413 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6756d4aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:07:23, skipping insertion in model container [2023-11-06 23:07:23,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:20" (2/3) ... [2023-11-06 23:07:23,414 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6756d4aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:07:23, skipping insertion in model container [2023-11-06 23:07:23,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:07:23" (3/3) ... [2023-11-06 23:07:23,415 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label27.c [2023-11-06 23:07:23,435 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:07:23,435 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 23:07:23,498 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:07:23,505 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=LoopsAndPotentialCycles, 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;@63648c34, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:07:23,505 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 23:07:23,512 INFO L276 IsEmpty]: Start isEmpty. Operand has 396 states, 394 states have (on average 1.8350253807106598) internal successors, (723), 395 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:23,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-06 23:07:23,519 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:23,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:23,520 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:23,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:23,526 INFO L85 PathProgramCache]: Analyzing trace with hash -569068670, now seen corresponding path program 1 times [2023-11-06 23:07:23,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:23,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115044947] [2023-11-06 23:07:23,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:23,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:23,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:23,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:23,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:23,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115044947] [2023-11-06 23:07:23,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115044947] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:23,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:23,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:07:23,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272838441] [2023-11-06 23:07:23,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:23,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:07:23,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:23,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:07:23,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:07:23,898 INFO L87 Difference]: Start difference. First operand has 396 states, 394 states have (on average 1.8350253807106598) internal successors, (723), 395 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:25,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:25,971 INFO L93 Difference]: Finished difference Result 1122 states and 2103 transitions. [2023-11-06 23:07:25,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:07:25,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-06 23:07:25,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:25,993 INFO L225 Difference]: With dead ends: 1122 [2023-11-06 23:07:25,994 INFO L226 Difference]: Without dead ends: 662 [2023-11-06 23:07:25,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:07:26,002 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 375 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:26,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 254 Invalid, 1314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 864 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-06 23:07:26,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2023-11-06 23:07:26,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 662. [2023-11-06 23:07:26,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 661 states have (on average 1.518910741301059) internal successors, (1004), 661 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:26,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1004 transitions. [2023-11-06 23:07:26,082 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1004 transitions. Word has length 12 [2023-11-06 23:07:26,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:26,083 INFO L495 AbstractCegarLoop]: Abstraction has 662 states and 1004 transitions. [2023-11-06 23:07:26,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:26,084 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1004 transitions. [2023-11-06 23:07:26,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-06 23:07:26,087 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:26,087 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 23:07:26,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 23:07:26,088 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:26,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:26,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1208748508, now seen corresponding path program 1 times [2023-11-06 23:07:26,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:26,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981843444] [2023-11-06 23:07:26,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:26,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:26,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:26,489 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:26,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:26,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981843444] [2023-11-06 23:07:26,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981843444] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:26,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:26,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:07:26,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069969055] [2023-11-06 23:07:26,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:26,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:07:26,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:26,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:07:26,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:07:26,494 INFO L87 Difference]: Start difference. First operand 662 states and 1004 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:28,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:28,547 INFO L93 Difference]: Finished difference Result 1980 states and 3007 transitions. [2023-11-06 23:07:28,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:07:28,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-11-06 23:07:28,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:28,565 INFO L225 Difference]: With dead ends: 1980 [2023-11-06 23:07:28,566 INFO L226 Difference]: Without dead ends: 1320 [2023-11-06 23:07:28,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:07:28,569 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 269 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 1260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:28,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 216 Invalid, 1260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 961 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-06 23:07:28,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2023-11-06 23:07:28,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1320. [2023-11-06 23:07:28,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 1319 states have (on average 1.4564063684609552) internal successors, (1921), 1319 states have internal predecessors, (1921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:28,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 1921 transitions. [2023-11-06 23:07:28,630 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 1921 transitions. Word has length 80 [2023-11-06 23:07:28,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:28,631 INFO L495 AbstractCegarLoop]: Abstraction has 1320 states and 1921 transitions. [2023-11-06 23:07:28,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:28,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 1921 transitions. [2023-11-06 23:07:28,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-06 23:07:28,635 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:28,636 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:28,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 23:07:28,636 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:28,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:28,637 INFO L85 PathProgramCache]: Analyzing trace with hash 776137925, now seen corresponding path program 1 times [2023-11-06 23:07:28,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:28,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421555116] [2023-11-06 23:07:28,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:28,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:28,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:28,794 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:28,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:28,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421555116] [2023-11-06 23:07:28,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421555116] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:28,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:28,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:07:28,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669260958] [2023-11-06 23:07:28,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:28,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:07:28,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:28,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:07:28,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:07:28,798 INFO L87 Difference]: Start difference. First operand 1320 states and 1921 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:30,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:30,554 INFO L93 Difference]: Finished difference Result 3954 states and 5758 transitions. [2023-11-06 23:07:30,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:07:30,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-11-06 23:07:30,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:30,571 INFO L225 Difference]: With dead ends: 3954 [2023-11-06 23:07:30,572 INFO L226 Difference]: Without dead ends: 2636 [2023-11-06 23:07:30,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:07:30,575 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 369 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 368 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:30,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 155 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [368 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-06 23:07:30,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2636 states. [2023-11-06 23:07:30,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2636 to 2636. [2023-11-06 23:07:30,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2636 states, 2635 states have (on average 1.3248576850094878) internal successors, (3491), 2635 states have internal predecessors, (3491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:30,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2636 states to 2636 states and 3491 transitions. [2023-11-06 23:07:30,667 INFO L78 Accepts]: Start accepts. Automaton has 2636 states and 3491 transitions. Word has length 91 [2023-11-06 23:07:30,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:30,668 INFO L495 AbstractCegarLoop]: Abstraction has 2636 states and 3491 transitions. [2023-11-06 23:07:30,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:30,668 INFO L276 IsEmpty]: Start isEmpty. Operand 2636 states and 3491 transitions. [2023-11-06 23:07:30,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-06 23:07:30,673 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:30,674 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:30,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 23:07:30,674 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:30,675 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:30,675 INFO L85 PathProgramCache]: Analyzing trace with hash 199537731, now seen corresponding path program 1 times [2023-11-06 23:07:30,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:30,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820903833] [2023-11-06 23:07:30,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:30,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:30,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:30,885 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:30,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:30,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820903833] [2023-11-06 23:07:30,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820903833] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:30,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:30,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:07:30,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074508327] [2023-11-06 23:07:30,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:30,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:07:30,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:30,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:07:30,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:07:30,889 INFO L87 Difference]: Start difference. First operand 2636 states and 3491 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:32,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:32,544 INFO L93 Difference]: Finished difference Result 6586 states and 8550 transitions. [2023-11-06 23:07:32,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:07:32,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2023-11-06 23:07:32,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:32,572 INFO L225 Difference]: With dead ends: 6586 [2023-11-06 23:07:32,572 INFO L226 Difference]: Without dead ends: 3952 [2023-11-06 23:07:32,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:07:32,585 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 278 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:32,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 83 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-06 23:07:32,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3952 states. [2023-11-06 23:07:32,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3952 to 3952. [2023-11-06 23:07:32,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3952 states, 3951 states have (on average 1.2171602126044039) internal successors, (4809), 3951 states have internal predecessors, (4809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:32,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3952 states to 3952 states and 4809 transitions. [2023-11-06 23:07:32,701 INFO L78 Accepts]: Start accepts. Automaton has 3952 states and 4809 transitions. Word has length 143 [2023-11-06 23:07:32,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:32,703 INFO L495 AbstractCegarLoop]: Abstraction has 3952 states and 4809 transitions. [2023-11-06 23:07:32,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:32,704 INFO L276 IsEmpty]: Start isEmpty. Operand 3952 states and 4809 transitions. [2023-11-06 23:07:32,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-11-06 23:07:32,715 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:32,715 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:32,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 23:07:32,716 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:32,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:32,717 INFO L85 PathProgramCache]: Analyzing trace with hash -777424065, now seen corresponding path program 1 times [2023-11-06 23:07:32,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:32,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339670004] [2023-11-06 23:07:32,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:32,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:32,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:33,140 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:33,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:33,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339670004] [2023-11-06 23:07:33,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339670004] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:33,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:33,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:07:33,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810258417] [2023-11-06 23:07:33,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:33,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:07:33,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:33,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:07:33,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:07:33,146 INFO L87 Difference]: Start difference. First operand 3952 states and 4809 transitions. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:34,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:34,927 INFO L93 Difference]: Finished difference Result 9547 states and 11836 transitions. [2023-11-06 23:07:34,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:07:34,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 247 [2023-11-06 23:07:34,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:34,958 INFO L225 Difference]: With dead ends: 9547 [2023-11-06 23:07:34,958 INFO L226 Difference]: Without dead ends: 5597 [2023-11-06 23:07:34,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:07:34,965 INFO L413 NwaCegarLoop]: 589 mSDtfsCounter, 320 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:34,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 595 Invalid, 1228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 1011 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-06 23:07:34,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5597 states. [2023-11-06 23:07:35,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5597 to 5597. [2023-11-06 23:07:35,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5597 states, 5596 states have (on average 1.1801286633309507) internal successors, (6604), 5596 states have internal predecessors, (6604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:35,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5597 states to 5597 states and 6604 transitions. [2023-11-06 23:07:35,097 INFO L78 Accepts]: Start accepts. Automaton has 5597 states and 6604 transitions. Word has length 247 [2023-11-06 23:07:35,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:35,098 INFO L495 AbstractCegarLoop]: Abstraction has 5597 states and 6604 transitions. [2023-11-06 23:07:35,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:35,099 INFO L276 IsEmpty]: Start isEmpty. Operand 5597 states and 6604 transitions. [2023-11-06 23:07:35,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2023-11-06 23:07:35,102 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:35,103 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:35,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 23:07:35,103 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:35,104 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:35,104 INFO L85 PathProgramCache]: Analyzing trace with hash 2131504422, now seen corresponding path program 1 times [2023-11-06 23:07:35,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:35,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094395492] [2023-11-06 23:07:35,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:35,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:35,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:35,906 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:35,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:35,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094395492] [2023-11-06 23:07:35,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094395492] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:35,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:35,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:07:35,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093982667] [2023-11-06 23:07:35,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:35,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:07:35,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:35,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:07:35,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:07:35,910 INFO L87 Difference]: Start difference. First operand 5597 states and 6604 transitions. Second operand has 4 states, 4 states have (on average 64.25) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:37,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:37,581 INFO L93 Difference]: Finished difference Result 11538 states and 13564 transitions. [2023-11-06 23:07:37,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:07:37,582 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.25) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 257 [2023-11-06 23:07:37,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:37,612 INFO L225 Difference]: With dead ends: 11538 [2023-11-06 23:07:37,613 INFO L226 Difference]: Without dead ends: 5943 [2023-11-06 23:07:37,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:07:37,620 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 173 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 1435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:37,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 366 Invalid, 1435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-06 23:07:37,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5943 states. [2023-11-06 23:07:37,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5943 to 5926. [2023-11-06 23:07:37,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5926 states, 5925 states have (on average 1.171139240506329) internal successors, (6939), 5925 states have internal predecessors, (6939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:37,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5926 states to 5926 states and 6939 transitions. [2023-11-06 23:07:37,769 INFO L78 Accepts]: Start accepts. Automaton has 5926 states and 6939 transitions. Word has length 257 [2023-11-06 23:07:37,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:37,770 INFO L495 AbstractCegarLoop]: Abstraction has 5926 states and 6939 transitions. [2023-11-06 23:07:37,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.25) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:37,770 INFO L276 IsEmpty]: Start isEmpty. Operand 5926 states and 6939 transitions. [2023-11-06 23:07:37,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2023-11-06 23:07:37,781 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:37,783 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:37,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 23:07:37,783 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:37,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:37,784 INFO L85 PathProgramCache]: Analyzing trace with hash -906618025, now seen corresponding path program 1 times [2023-11-06 23:07:37,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:37,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597891087] [2023-11-06 23:07:37,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:37,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:37,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:38,631 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:38,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:38,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597891087] [2023-11-06 23:07:38,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597891087] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:38,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:38,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 23:07:38,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15450757] [2023-11-06 23:07:38,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:38,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:07:38,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:38,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:07:38,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:07:38,636 INFO L87 Difference]: Start difference. First operand 5926 states and 6939 transitions. Second operand has 7 states, 7 states have (on average 49.142857142857146) internal successors, (344), 6 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:40,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:40,827 INFO L93 Difference]: Finished difference Result 11380 states and 13388 transitions. [2023-11-06 23:07:40,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 23:07:40,832 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 49.142857142857146) internal successors, (344), 6 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 344 [2023-11-06 23:07:40,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:40,860 INFO L225 Difference]: With dead ends: 11380 [2023-11-06 23:07:40,860 INFO L226 Difference]: Without dead ends: 5597 [2023-11-06 23:07:40,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:07:40,868 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 308 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 1521 mSolverCounterSat, 498 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 2019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 498 IncrementalHoareTripleChecker+Valid, 1521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:40,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 280 Invalid, 2019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [498 Valid, 1521 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-06 23:07:40,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5597 states. [2023-11-06 23:07:40,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5597 to 5597. [2023-11-06 23:07:40,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5597 states, 5596 states have (on average 1.0687991422444603) internal successors, (5981), 5596 states have internal predecessors, (5981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:40,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5597 states to 5597 states and 5981 transitions. [2023-11-06 23:07:40,984 INFO L78 Accepts]: Start accepts. Automaton has 5597 states and 5981 transitions. Word has length 344 [2023-11-06 23:07:40,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:40,985 INFO L495 AbstractCegarLoop]: Abstraction has 5597 states and 5981 transitions. [2023-11-06 23:07:40,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 49.142857142857146) internal successors, (344), 6 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:40,985 INFO L276 IsEmpty]: Start isEmpty. Operand 5597 states and 5981 transitions. [2023-11-06 23:07:41,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2023-11-06 23:07:41,011 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:41,011 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:41,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 23:07:41,012 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:41,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:41,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1427787007, now seen corresponding path program 1 times [2023-11-06 23:07:41,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:41,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241879630] [2023-11-06 23:07:41,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:41,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:41,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:41,760 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-06 23:07:41,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:41,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241879630] [2023-11-06 23:07:41,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241879630] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:07:41,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477308491] [2023-11-06 23:07:41,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:41,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:41,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:41,768 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:07:41,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 23:07:42,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:42,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 23:07:42,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:42,638 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-11-06 23:07:42,638 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:07:42,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477308491] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:42,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:07:42,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-11-06 23:07:42,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102741427] [2023-11-06 23:07:42,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:42,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:07:42,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:42,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:07:42,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:07:42,642 INFO L87 Difference]: Start difference. First operand 5597 states and 5981 transitions. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 2 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:43,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:43,706 INFO L93 Difference]: Finished difference Result 7244 states and 7669 transitions. [2023-11-06 23:07:43,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:07:43,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 2 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 351 [2023-11-06 23:07:43,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:43,739 INFO L225 Difference]: With dead ends: 7244 [2023-11-06 23:07:43,739 INFO L226 Difference]: Without dead ends: 7242 [2023-11-06 23:07:43,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:07:43,742 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 108 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:43,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 83 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-06 23:07:43,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7242 states. [2023-11-06 23:07:43,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7242 to 6255. [2023-11-06 23:07:43,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6255 states, 6254 states have (on average 1.0652382475215862) internal successors, (6662), 6254 states have internal predecessors, (6662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:43,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6255 states to 6255 states and 6662 transitions. [2023-11-06 23:07:43,871 INFO L78 Accepts]: Start accepts. Automaton has 6255 states and 6662 transitions. Word has length 351 [2023-11-06 23:07:43,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:43,872 INFO L495 AbstractCegarLoop]: Abstraction has 6255 states and 6662 transitions. [2023-11-06 23:07:43,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 2 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:43,873 INFO L276 IsEmpty]: Start isEmpty. Operand 6255 states and 6662 transitions. [2023-11-06 23:07:43,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2023-11-06 23:07:43,889 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:43,890 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:43,900 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 23:07:44,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-06 23:07:44,101 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:44,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:44,101 INFO L85 PathProgramCache]: Analyzing trace with hash 979288482, now seen corresponding path program 1 times [2023-11-06 23:07:44,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:44,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837893296] [2023-11-06 23:07:44,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:44,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:44,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:45,055 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 566 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-11-06 23:07:45,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:45,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837893296] [2023-11-06 23:07:45,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837893296] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:45,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:45,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:07:45,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277951687] [2023-11-06 23:07:45,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:45,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:07:45,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:45,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:07:45,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:07:45,062 INFO L87 Difference]: Start difference. First operand 6255 states and 6662 transitions. Second operand has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:46,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:46,250 INFO L93 Difference]: Finished difference Result 14482 states and 15546 transitions. [2023-11-06 23:07:46,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:07:46,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 587 [2023-11-06 23:07:46,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:46,269 INFO L225 Difference]: With dead ends: 14482 [2023-11-06 23:07:46,269 INFO L226 Difference]: Without dead ends: 8558 [2023-11-06 23:07:46,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:07:46,277 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 224 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:46,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 38 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-06 23:07:46,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8558 states. [2023-11-06 23:07:46,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8558 to 8558. [2023-11-06 23:07:46,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8558 states, 8557 states have (on average 1.069767441860465) internal successors, (9154), 8557 states have internal predecessors, (9154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:46,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8558 states to 8558 states and 9154 transitions. [2023-11-06 23:07:46,422 INFO L78 Accepts]: Start accepts. Automaton has 8558 states and 9154 transitions. Word has length 587 [2023-11-06 23:07:46,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:46,424 INFO L495 AbstractCegarLoop]: Abstraction has 8558 states and 9154 transitions. [2023-11-06 23:07:46,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:46,425 INFO L276 IsEmpty]: Start isEmpty. Operand 8558 states and 9154 transitions. [2023-11-06 23:07:46,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 677 [2023-11-06 23:07:46,446 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:46,447 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:46,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 23:07:46,448 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:46,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:46,448 INFO L85 PathProgramCache]: Analyzing trace with hash 47581162, now seen corresponding path program 1 times [2023-11-06 23:07:46,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:46,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544365117] [2023-11-06 23:07:46,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:46,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:46,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:47,255 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 325 proven. 0 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2023-11-06 23:07:47,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:47,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544365117] [2023-11-06 23:07:47,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544365117] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:47,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:47,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:07:47,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787693383] [2023-11-06 23:07:47,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:47,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:07:47,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:47,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:07:47,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:07:47,263 INFO L87 Difference]: Start difference. First operand 8558 states and 9154 transitions. Second operand has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:48,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:48,519 INFO L93 Difference]: Finished difference Result 19417 states and 20870 transitions. [2023-11-06 23:07:48,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:07:48,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 676 [2023-11-06 23:07:48,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:48,541 INFO L225 Difference]: With dead ends: 19417 [2023-11-06 23:07:48,542 INFO L226 Difference]: Without dead ends: 11190 [2023-11-06 23:07:48,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:07:48,551 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 220 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:48,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 440 Invalid, 867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-06 23:07:48,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11190 states. [2023-11-06 23:07:48,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11190 to 10203. [2023-11-06 23:07:48,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10203 states, 10202 states have (on average 1.0627327974906882) internal successors, (10842), 10202 states have internal predecessors, (10842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:48,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10203 states to 10203 states and 10842 transitions. [2023-11-06 23:07:48,721 INFO L78 Accepts]: Start accepts. Automaton has 10203 states and 10842 transitions. Word has length 676 [2023-11-06 23:07:48,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:48,722 INFO L495 AbstractCegarLoop]: Abstraction has 10203 states and 10842 transitions. [2023-11-06 23:07:48,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:48,723 INFO L276 IsEmpty]: Start isEmpty. Operand 10203 states and 10842 transitions. [2023-11-06 23:07:48,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2023-11-06 23:07:48,749 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:48,750 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:48,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 23:07:48,750 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:48,751 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:48,751 INFO L85 PathProgramCache]: Analyzing trace with hash -244162789, now seen corresponding path program 1 times [2023-11-06 23:07:48,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:48,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697739280] [2023-11-06 23:07:48,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:48,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:48,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:49,478 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2023-11-06 23:07:49,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:49,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697739280] [2023-11-06 23:07:49,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697739280] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:49,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:49,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:07:49,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119552204] [2023-11-06 23:07:49,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:49,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:07:49,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:49,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:07:49,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:07:49,482 INFO L87 Difference]: Start difference. First operand 10203 states and 10842 transitions. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:50,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:50,675 INFO L93 Difference]: Finished difference Result 25010 states and 26714 transitions. [2023-11-06 23:07:50,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:07:50,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 677 [2023-11-06 23:07:50,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:50,701 INFO L225 Difference]: With dead ends: 25010 [2023-11-06 23:07:50,701 INFO L226 Difference]: Without dead ends: 13164 [2023-11-06 23:07:50,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:07:50,713 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 327 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:50,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 430 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-06 23:07:50,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13164 states. [2023-11-06 23:07:50,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13164 to 12835. [2023-11-06 23:07:50,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12835 states, 12834 states have (on average 1.0526725884369643) internal successors, (13510), 12834 states have internal predecessors, (13510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:50,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12835 states to 12835 states and 13510 transitions. [2023-11-06 23:07:50,987 INFO L78 Accepts]: Start accepts. Automaton has 12835 states and 13510 transitions. Word has length 677 [2023-11-06 23:07:50,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:50,988 INFO L495 AbstractCegarLoop]: Abstraction has 12835 states and 13510 transitions. [2023-11-06 23:07:50,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:50,989 INFO L276 IsEmpty]: Start isEmpty. Operand 12835 states and 13510 transitions. [2023-11-06 23:07:51,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1014 [2023-11-06 23:07:51,014 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:51,016 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-06 23:07:51,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 23:07:51,016 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:51,017 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:51,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1304519700, now seen corresponding path program 1 times [2023-11-06 23:07:51,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:51,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238640388] [2023-11-06 23:07:51,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:51,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:53,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1716 backedges. 652 proven. 734 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2023-11-06 23:07:53,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:53,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238640388] [2023-11-06 23:07:53,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238640388] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:07:53,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502525765] [2023-11-06 23:07:53,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:53,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:53,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:53,472 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:07:53,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 23:07:53,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:53,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 1195 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 23:07:53,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:54,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1716 backedges. 969 proven. 0 refuted. 0 times theorem prover too weak. 747 trivial. 0 not checked. [2023-11-06 23:07:54,467 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:07:54,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502525765] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:54,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:07:54,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-06 23:07:54,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165197382] [2023-11-06 23:07:54,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:54,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:07:54,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:54,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:07:54,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:07:54,472 INFO L87 Difference]: Start difference. First operand 12835 states and 13510 transitions. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:55,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:55,497 INFO L93 Difference]: Finished difference Result 25339 states and 26687 transitions. [2023-11-06 23:07:55,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:07:55,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1013 [2023-11-06 23:07:55,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:55,522 INFO L225 Difference]: With dead ends: 25339 [2023-11-06 23:07:55,522 INFO L226 Difference]: Without dead ends: 12835 [2023-11-06 23:07:55,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1017 GetRequests, 1013 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:07:55,535 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 94 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:55,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 377 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-06 23:07:55,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12835 states. [2023-11-06 23:07:55,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12835 to 12835. [2023-11-06 23:07:55,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12835 states, 12834 states have (on average 1.0470624902602461) internal successors, (13438), 12834 states have internal predecessors, (13438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:55,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12835 states to 12835 states and 13438 transitions. [2023-11-06 23:07:55,699 INFO L78 Accepts]: Start accepts. Automaton has 12835 states and 13438 transitions. Word has length 1013 [2023-11-06 23:07:55,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:55,700 INFO L495 AbstractCegarLoop]: Abstraction has 12835 states and 13438 transitions. [2023-11-06 23:07:55,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:55,701 INFO L276 IsEmpty]: Start isEmpty. Operand 12835 states and 13438 transitions. [2023-11-06 23:07:55,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1117 [2023-11-06 23:07:55,727 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:55,728 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:55,739 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-06 23:07:55,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:55,935 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:55,936 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:55,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1441582007, now seen corresponding path program 1 times [2023-11-06 23:07:55,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:55,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724224590] [2023-11-06 23:07:55,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:55,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:58,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2270 backedges. 1523 proven. 0 refuted. 0 times theorem prover too weak. 747 trivial. 0 not checked. [2023-11-06 23:07:58,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:58,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724224590] [2023-11-06 23:07:58,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724224590] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:58,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:58,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 23:07:58,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083702226] [2023-11-06 23:07:58,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:58,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:07:58,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:58,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:07:58,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:07:58,254 INFO L87 Difference]: Start difference. First operand 12835 states and 13438 transitions. Second operand has 6 states, 6 states have (on average 104.16666666666667) internal successors, (625), 6 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:59,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:59,932 INFO L93 Difference]: Finished difference Result 25372 states and 26576 transitions. [2023-11-06 23:07:59,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 23:07:59,933 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 104.16666666666667) internal successors, (625), 6 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1116 [2023-11-06 23:07:59,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:59,954 INFO L225 Difference]: With dead ends: 25372 [2023-11-06 23:07:59,954 INFO L226 Difference]: Without dead ends: 12868 [2023-11-06 23:07:59,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:07:59,963 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 706 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 1630 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 1718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:59,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [706 Valid, 568 Invalid, 1718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1630 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-06 23:07:59,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12868 states. [2023-11-06 23:08:00,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12868 to 12835. [2023-11-06 23:08:00,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12835 states, 12834 states have (on average 1.045348293595138) internal successors, (13416), 12834 states have internal predecessors, (13416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:08:00,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12835 states to 12835 states and 13416 transitions. [2023-11-06 23:08:00,135 INFO L78 Accepts]: Start accepts. Automaton has 12835 states and 13416 transitions. Word has length 1116 [2023-11-06 23:08:00,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:08:00,136 INFO L495 AbstractCegarLoop]: Abstraction has 12835 states and 13416 transitions. [2023-11-06 23:08:00,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 104.16666666666667) internal successors, (625), 6 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:08:00,137 INFO L276 IsEmpty]: Start isEmpty. Operand 12835 states and 13416 transitions. [2023-11-06 23:08:00,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1131 [2023-11-06 23:08:00,166 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:08:00,167 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-06 23:08:00,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 23:08:00,167 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:08:00,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:00,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1773482560, now seen corresponding path program 1 times [2023-11-06 23:08:00,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:00,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082321204] [2023-11-06 23:08:00,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:00,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:00,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:02,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2105 backedges. 1395 proven. 0 refuted. 0 times theorem prover too weak. 710 trivial. 0 not checked. [2023-11-06 23:08:02,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:02,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082321204] [2023-11-06 23:08:02,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082321204] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:02,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:02,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:08:02,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990758938] [2023-11-06 23:08:02,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:02,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:08:02,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:02,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:08:02,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:08:02,193 INFO L87 Difference]: Start difference. First operand 12835 states and 13416 transitions. Second operand has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:08:03,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:08:03,498 INFO L93 Difference]: Finished difference Result 25348 states and 26508 transitions. [2023-11-06 23:08:03,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:08:03,499 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1130 [2023-11-06 23:08:03,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:08:03,520 INFO L225 Difference]: With dead ends: 25348 [2023-11-06 23:08:03,520 INFO L226 Difference]: Without dead ends: 12844 [2023-11-06 23:08:03,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:08:03,527 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 262 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 1309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-06 23:08:03,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 443 Invalid, 1309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-06 23:08:03,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12844 states. [2023-11-06 23:08:03,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12844 to 12506. [2023-11-06 23:08:03,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12506 states, 12505 states have (on average 1.0458216713314674) internal successors, (13078), 12505 states have internal predecessors, (13078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:08:03,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12506 states to 12506 states and 13078 transitions. [2023-11-06 23:08:03,692 INFO L78 Accepts]: Start accepts. Automaton has 12506 states and 13078 transitions. Word has length 1130 [2023-11-06 23:08:03,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:08:03,694 INFO L495 AbstractCegarLoop]: Abstraction has 12506 states and 13078 transitions. [2023-11-06 23:08:03,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:08:03,694 INFO L276 IsEmpty]: Start isEmpty. Operand 12506 states and 13078 transitions. [2023-11-06 23:08:03,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1133 [2023-11-06 23:08:03,722 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:08:03,723 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:03,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 23:08:03,724 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:08:03,724 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:03,724 INFO L85 PathProgramCache]: Analyzing trace with hash 393686008, now seen corresponding path program 1 times [2023-11-06 23:08:03,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:03,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492768704] [2023-11-06 23:08:03,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:03,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:03,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:04,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2462 backedges. 649 proven. 0 refuted. 0 times theorem prover too weak. 1813 trivial. 0 not checked. [2023-11-06 23:08:04,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:04,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492768704] [2023-11-06 23:08:04,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492768704] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:04,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:04,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:08:04,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285799405] [2023-11-06 23:08:04,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:04,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:08:04,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:04,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:08:04,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:08:04,731 INFO L87 Difference]: Start difference. First operand 12506 states and 13078 transitions. Second operand has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:08:05,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:08:05,745 INFO L93 Difference]: Finished difference Result 26655 states and 27882 transitions. [2023-11-06 23:08:05,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:08:05,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1132 [2023-11-06 23:08:05,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:08:05,769 INFO L225 Difference]: With dead ends: 26655 [2023-11-06 23:08:05,769 INFO L226 Difference]: Without dead ends: 13822 [2023-11-06 23:08:05,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:08:05,777 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 236 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-06 23:08:05,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 415 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-06 23:08:05,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13822 states. [2023-11-06 23:08:05,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13822 to 11519. [2023-11-06 23:08:05,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11519 states, 11518 states have (on average 1.0335995832609828) internal successors, (11905), 11518 states have internal predecessors, (11905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:08:05,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11519 states to 11519 states and 11905 transitions. [2023-11-06 23:08:05,922 INFO L78 Accepts]: Start accepts. Automaton has 11519 states and 11905 transitions. Word has length 1132 [2023-11-06 23:08:05,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:08:05,923 INFO L495 AbstractCegarLoop]: Abstraction has 11519 states and 11905 transitions. [2023-11-06 23:08:05,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:08:05,924 INFO L276 IsEmpty]: Start isEmpty. Operand 11519 states and 11905 transitions. [2023-11-06 23:08:05,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1165 [2023-11-06 23:08:05,958 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:08:05,959 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:05,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 23:08:05,959 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:08:05,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:05,960 INFO L85 PathProgramCache]: Analyzing trace with hash -823349259, now seen corresponding path program 1 times [2023-11-06 23:08:05,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:05,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686782555] [2023-11-06 23:08:05,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:05,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:06,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:06,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2632 backedges. 1879 proven. 0 refuted. 0 times theorem prover too weak. 753 trivial. 0 not checked. [2023-11-06 23:08:06,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:06,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686782555] [2023-11-06 23:08:06,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686782555] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:06,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:06,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:08:06,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017349244] [2023-11-06 23:08:06,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:06,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:08:06,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:06,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:08:06,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:08:06,855 INFO L87 Difference]: Start difference. First operand 11519 states and 11905 transitions. Second operand has 3 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:08:07,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:08:07,933 INFO L93 Difference]: Finished difference Result 23036 states and 23807 transitions. [2023-11-06 23:08:07,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:08:07,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1164 [2023-11-06 23:08:07,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:08:07,945 INFO L225 Difference]: With dead ends: 23036 [2023-11-06 23:08:07,945 INFO L226 Difference]: Without dead ends: 11519 [2023-11-06 23:08:07,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:08:07,952 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 193 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:08:07,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 420 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-06 23:08:07,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11519 states. [2023-11-06 23:08:08,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11519 to 11190. [2023-11-06 23:08:08,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11190 states, 11189 states have (on average 1.0248458307266064) internal successors, (11467), 11189 states have internal predecessors, (11467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:08:08,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11190 states to 11190 states and 11467 transitions. [2023-11-06 23:08:08,079 INFO L78 Accepts]: Start accepts. Automaton has 11190 states and 11467 transitions. Word has length 1164 [2023-11-06 23:08:08,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:08:08,080 INFO L495 AbstractCegarLoop]: Abstraction has 11190 states and 11467 transitions. [2023-11-06 23:08:08,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:08:08,081 INFO L276 IsEmpty]: Start isEmpty. Operand 11190 states and 11467 transitions. [2023-11-06 23:08:08,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1190 [2023-11-06 23:08:08,106 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:08:08,107 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:08,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 23:08:08,108 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:08:08,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:08,109 INFO L85 PathProgramCache]: Analyzing trace with hash 874871941, now seen corresponding path program 1 times [2023-11-06 23:08:08,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:08,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537217260] [2023-11-06 23:08:08,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:08,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:08,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:09,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2782 backedges. 1475 proven. 0 refuted. 0 times theorem prover too weak. 1307 trivial. 0 not checked. [2023-11-06 23:08:09,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:09,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537217260] [2023-11-06 23:08:09,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537217260] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:09,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:09,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:08:09,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989485458] [2023-11-06 23:08:09,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:09,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:08:09,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:09,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:08:09,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:08:09,546 INFO L87 Difference]: Start difference. First operand 11190 states and 11467 transitions. Second operand has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:08:10,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:08:10,541 INFO L93 Difference]: Finished difference Result 22707 states and 23270 transitions. [2023-11-06 23:08:10,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:08:10,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1189 [2023-11-06 23:08:10,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:08:10,549 INFO L225 Difference]: With dead ends: 22707 [2023-11-06 23:08:10,550 INFO L226 Difference]: Without dead ends: 11848 [2023-11-06 23:08:10,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:08:10,556 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 224 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-06 23:08:10,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 432 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-06 23:08:10,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11848 states. [2023-11-06 23:08:10,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11848 to 11848. [2023-11-06 23:08:10,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11848 states, 11847 states have (on average 1.0238879041107454) internal successors, (12130), 11847 states have internal predecessors, (12130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:08:10,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11848 states to 11848 states and 12130 transitions. [2023-11-06 23:08:10,690 INFO L78 Accepts]: Start accepts. Automaton has 11848 states and 12130 transitions. Word has length 1189 [2023-11-06 23:08:10,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:08:10,691 INFO L495 AbstractCegarLoop]: Abstraction has 11848 states and 12130 transitions. [2023-11-06 23:08:10,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:08:10,691 INFO L276 IsEmpty]: Start isEmpty. Operand 11848 states and 12130 transitions. [2023-11-06 23:08:10,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1244 [2023-11-06 23:08:10,717 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:08:10,718 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:10,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 23:08:10,719 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:08:10,719 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:10,720 INFO L85 PathProgramCache]: Analyzing trace with hash 754228544, now seen corresponding path program 1 times [2023-11-06 23:08:10,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:10,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337466965] [2023-11-06 23:08:10,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:10,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:13,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2806 backedges. 2276 proven. 182 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2023-11-06 23:08:13,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:13,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337466965] [2023-11-06 23:08:13,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337466965] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:08:13,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762090950] [2023-11-06 23:08:13,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:13,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:08:13,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:08:13,836 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:08:13,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 23:08:14,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:14,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 1449 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 23:08:14,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:08:17,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2806 backedges. 1496 proven. 201 refuted. 0 times theorem prover too weak. 1109 trivial. 0 not checked. [2023-11-06 23:08:17,975 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:08:23,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2806 backedges. 1496 proven. 201 refuted. 0 times theorem prover too weak. 1109 trivial. 0 not checked. [2023-11-06 23:08:23,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762090950] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:08:23,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:08:23,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 3, 3] total 11 [2023-11-06 23:08:23,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541248093] [2023-11-06 23:08:23,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:08:23,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 23:08:23,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:23,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 23:08:23,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-06 23:08:23,353 INFO L87 Difference]: Start difference. First operand 11848 states and 12130 transitions. Second operand has 11 states, 11 states have (on average 166.54545454545453) internal successors, (1832), 11 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:08:32,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:08:32,344 INFO L93 Difference]: Finished difference Result 35211 states and 36064 transitions. [2023-11-06 23:08:32,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 23:08:32,345 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 166.54545454545453) internal successors, (1832), 11 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1243 [2023-11-06 23:08:32,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:08:32,361 INFO L225 Difference]: With dead ends: 35211 [2023-11-06 23:08:32,361 INFO L226 Difference]: Without dead ends: 23365 [2023-11-06 23:08:32,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2514 GetRequests, 2494 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2023-11-06 23:08:32,369 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 4031 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 9430 mSolverCounterSat, 758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4031 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 10188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 758 IncrementalHoareTripleChecker+Valid, 9430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-11-06 23:08:32,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4031 Valid, 122 Invalid, 10188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [758 Valid, 9430 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2023-11-06 23:08:32,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23365 states. [2023-11-06 23:08:32,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23365 to 15467. [2023-11-06 23:08:32,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15467 states, 15466 states have (on average 1.0215957584378637) internal successors, (15800), 15466 states have internal predecessors, (15800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:08:32,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15467 states to 15467 states and 15800 transitions. [2023-11-06 23:08:32,572 INFO L78 Accepts]: Start accepts. Automaton has 15467 states and 15800 transitions. Word has length 1243 [2023-11-06 23:08:32,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:08:32,573 INFO L495 AbstractCegarLoop]: Abstraction has 15467 states and 15800 transitions. [2023-11-06 23:08:32,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 166.54545454545453) internal successors, (1832), 11 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:08:32,573 INFO L276 IsEmpty]: Start isEmpty. Operand 15467 states and 15800 transitions. [2023-11-06 23:08:32,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1733 [2023-11-06 23:08:32,608 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:08:32,610 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:32,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 23:08:32,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-06 23:08:32,817 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:08:32,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:32,818 INFO L85 PathProgramCache]: Analyzing trace with hash -965535893, now seen corresponding path program 1 times [2023-11-06 23:08:32,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:32,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927563842] [2023-11-06 23:08:32,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:32,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:33,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:36,435 INFO L134 CoverageAnalysis]: Checked inductivity of 5873 backedges. 2291 proven. 156 refuted. 0 times theorem prover too weak. 3426 trivial. 0 not checked. [2023-11-06 23:08:36,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:36,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927563842] [2023-11-06 23:08:36,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927563842] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:08:36,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966524965] [2023-11-06 23:08:36,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:36,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:08:36,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:08:36,439 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:08:36,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 23:08:37,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:37,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 2016 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 23:08:37,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:08:37,656 INFO L134 CoverageAnalysis]: Checked inductivity of 5873 backedges. 2447 proven. 0 refuted. 0 times theorem prover too weak. 3426 trivial. 0 not checked. [2023-11-06 23:08:37,656 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:08:37,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966524965] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:37,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:08:37,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-11-06 23:08:37,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779704531] [2023-11-06 23:08:37,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:37,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:08:37,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:37,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:08:37,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:08:37,661 INFO L87 Difference]: Start difference. First operand 15467 states and 15800 transitions. Second operand has 3 states, 3 states have (on average 243.66666666666666) internal successors, (731), 3 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:08:38,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:08:38,736 INFO L93 Difference]: Finished difference Result 32248 states and 32943 transitions. [2023-11-06 23:08:38,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:08:38,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 243.66666666666666) internal successors, (731), 3 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1732 [2023-11-06 23:08:38,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:08:38,749 INFO L225 Difference]: With dead ends: 32248 [2023-11-06 23:08:38,749 INFO L226 Difference]: Without dead ends: 17112 [2023-11-06 23:08:38,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1736 GetRequests, 1731 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:08:38,756 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 174 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:08:38,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 75 Invalid, 801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-06 23:08:38,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17112 states. [2023-11-06 23:08:38,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17112 to 15467. [2023-11-06 23:08:38,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15467 states, 15466 states have (on average 1.020561231087547) internal successors, (15784), 15466 states have internal predecessors, (15784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:08:38,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15467 states to 15467 states and 15784 transitions. [2023-11-06 23:08:38,925 INFO L78 Accepts]: Start accepts. Automaton has 15467 states and 15784 transitions. Word has length 1732 [2023-11-06 23:08:38,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:08:38,925 INFO L495 AbstractCegarLoop]: Abstraction has 15467 states and 15784 transitions. [2023-11-06 23:08:38,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.66666666666666) internal successors, (731), 3 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:08:38,926 INFO L276 IsEmpty]: Start isEmpty. Operand 15467 states and 15784 transitions. [2023-11-06 23:08:38,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2191 [2023-11-06 23:08:38,956 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:08:38,957 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:38,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 23:08:39,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:08:39,159 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:08:39,159 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:39,159 INFO L85 PathProgramCache]: Analyzing trace with hash 949905861, now seen corresponding path program 1 times [2023-11-06 23:08:39,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:39,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113867788] [2023-11-06 23:08:39,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:39,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:39,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:45,088 INFO L134 CoverageAnalysis]: Checked inductivity of 9372 backedges. 7116 proven. 450 refuted. 0 times theorem prover too weak. 1806 trivial. 0 not checked. [2023-11-06 23:08:45,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:45,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113867788] [2023-11-06 23:08:45,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113867788] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:08:45,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021809836] [2023-11-06 23:08:45,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:45,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:08:45,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:08:45,091 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:08:45,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 23:08:45,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:45,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 2525 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 23:08:45,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:08:46,569 INFO L134 CoverageAnalysis]: Checked inductivity of 9372 backedges. 5800 proven. 0 refuted. 0 times theorem prover too weak. 3572 trivial. 0 not checked. [2023-11-06 23:08:46,569 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:08:46,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021809836] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:46,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:08:46,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-11-06 23:08:46,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287410070] [2023-11-06 23:08:46,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:46,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:08:46,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:46,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:08:46,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:08:46,577 INFO L87 Difference]: Start difference. First operand 15467 states and 15784 transitions. Second operand has 3 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:08:47,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:08:47,540 INFO L93 Difference]: Finished difference Result 30603 states and 31235 transitions. [2023-11-06 23:08:47,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:08:47,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2190 [2023-11-06 23:08:47,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:08:47,552 INFO L225 Difference]: With dead ends: 30603 [2023-11-06 23:08:47,552 INFO L226 Difference]: Without dead ends: 15467 [2023-11-06 23:08:47,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2200 GetRequests, 2194 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:08:47,558 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 120 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 23:08:47,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 425 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 23:08:47,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15467 states. [2023-11-06 23:08:47,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15467 to 15467. [2023-11-06 23:08:47,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15467 states, 15466 states have (on average 1.0203025992499677) internal successors, (15780), 15466 states have internal predecessors, (15780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:08:47,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15467 states to 15467 states and 15780 transitions. [2023-11-06 23:08:47,703 INFO L78 Accepts]: Start accepts. Automaton has 15467 states and 15780 transitions. Word has length 2190 [2023-11-06 23:08:47,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:08:47,704 INFO L495 AbstractCegarLoop]: Abstraction has 15467 states and 15780 transitions. [2023-11-06 23:08:47,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:08:47,705 INFO L276 IsEmpty]: Start isEmpty. Operand 15467 states and 15780 transitions. [2023-11-06 23:08:47,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2320 [2023-11-06 23:08:47,756 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:08:47,757 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:47,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 23:08:47,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:08:47,970 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:08:47,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:47,972 INFO L85 PathProgramCache]: Analyzing trace with hash -893537153, now seen corresponding path program 1 times [2023-11-06 23:08:47,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:47,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571200911] [2023-11-06 23:08:47,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:47,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:48,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:55,044 INFO L134 CoverageAnalysis]: Checked inductivity of 10336 backedges. 4621 proven. 523 refuted. 0 times theorem prover too weak. 5192 trivial. 0 not checked. [2023-11-06 23:08:55,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:55,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571200911] [2023-11-06 23:08:55,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571200911] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:08:55,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222600739] [2023-11-06 23:08:55,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:55,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:08:55,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:08:55,046 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:08:55,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 23:08:55,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:55,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 2668 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:08:55,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:08:56,411 INFO L134 CoverageAnalysis]: Checked inductivity of 10336 backedges. 6336 proven. 0 refuted. 0 times theorem prover too weak. 4000 trivial. 0 not checked. [2023-11-06 23:08:56,412 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:08:56,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222600739] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:56,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:08:56,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-11-06 23:08:56,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943461655] [2023-11-06 23:08:56,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:56,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:08:56,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:56,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:08:56,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:08:56,417 INFO L87 Difference]: Start difference. First operand 15467 states and 15780 transitions. Second operand has 4 states, 4 states have (on average 192.75) internal successors, (771), 4 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:08:58,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:08:58,003 INFO L93 Difference]: Finished difference Result 31590 states and 32234 transitions. [2023-11-06 23:08:58,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:08:58,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 192.75) internal successors, (771), 4 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2319 [2023-11-06 23:08:58,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:08:58,024 INFO L225 Difference]: With dead ends: 31590 [2023-11-06 23:08:58,024 INFO L226 Difference]: Without dead ends: 16454 [2023-11-06 23:08:58,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2327 GetRequests, 2320 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:08:58,036 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 731 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 1192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-06 23:08:58,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 64 Invalid, 1192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1124 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-06 23:08:58,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16454 states. [2023-11-06 23:08:58,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16454 to 15796. [2023-11-06 23:08:58,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15796 states, 15795 states have (on average 1.020386198163976) internal successors, (16117), 15795 states have internal predecessors, (16117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:08:58,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15796 states to 15796 states and 16117 transitions. [2023-11-06 23:08:58,212 INFO L78 Accepts]: Start accepts. Automaton has 15796 states and 16117 transitions. Word has length 2319 [2023-11-06 23:08:58,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:08:58,214 INFO L495 AbstractCegarLoop]: Abstraction has 15796 states and 16117 transitions. [2023-11-06 23:08:58,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.75) internal successors, (771), 4 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:08:58,214 INFO L276 IsEmpty]: Start isEmpty. Operand 15796 states and 16117 transitions. [2023-11-06 23:08:58,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2329 [2023-11-06 23:08:58,267 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:08:58,268 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-06 23:08:58,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 23:08:58,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-06 23:08:58,480 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:08:58,480 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:58,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1826102976, now seen corresponding path program 1 times [2023-11-06 23:08:58,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:58,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562552004] [2023-11-06 23:08:58,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:58,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:58,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:07,493 INFO L134 CoverageAnalysis]: Checked inductivity of 10329 backedges. 4565 proven. 1609 refuted. 0 times theorem prover too weak. 4155 trivial. 0 not checked. [2023-11-06 23:09:07,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:07,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562552004] [2023-11-06 23:09:07,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562552004] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:09:07,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781246729] [2023-11-06 23:09:07,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:07,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:07,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:09:07,500 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:09:07,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 23:09:08,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:08,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 2679 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 23:09:08,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:08,974 INFO L134 CoverageAnalysis]: Checked inductivity of 10329 backedges. 5681 proven. 0 refuted. 0 times theorem prover too weak. 4648 trivial. 0 not checked. [2023-11-06 23:09:08,974 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:09:08,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781246729] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:08,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:09:08,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 11 [2023-11-06 23:09:08,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777449334] [2023-11-06 23:09:08,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:08,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:09:08,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:08,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:09:08,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-06 23:09:08,980 INFO L87 Difference]: Start difference. First operand 15796 states and 16117 transitions. Second operand has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:10,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:10,159 INFO L93 Difference]: Finished difference Result 33235 states and 33894 transitions. [2023-11-06 23:09:10,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:09:10,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2328 [2023-11-06 23:09:10,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:10,172 INFO L225 Difference]: With dead ends: 33235 [2023-11-06 23:09:10,172 INFO L226 Difference]: Without dead ends: 17770 [2023-11-06 23:09:10,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2338 GetRequests, 2329 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-06 23:09:10,179 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 253 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:10,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 424 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-06 23:09:10,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17770 states. [2023-11-06 23:09:10,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17770 to 17112. [2023-11-06 23:09:10,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17112 states, 17111 states have (on average 1.0188183040149612) internal successors, (17433), 17111 states have internal predecessors, (17433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:10,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17112 states to 17112 states and 17433 transitions. [2023-11-06 23:09:10,410 INFO L78 Accepts]: Start accepts. Automaton has 17112 states and 17433 transitions. Word has length 2328 [2023-11-06 23:09:10,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:10,411 INFO L495 AbstractCegarLoop]: Abstraction has 17112 states and 17433 transitions. [2023-11-06 23:09:10,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:10,411 INFO L276 IsEmpty]: Start isEmpty. Operand 17112 states and 17433 transitions. [2023-11-06 23:09:10,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2371 [2023-11-06 23:09:10,444 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:10,445 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-06 23:09:10,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:10,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-06 23:09:10,647 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:09:10,647 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:10,648 INFO L85 PathProgramCache]: Analyzing trace with hash -476817684, now seen corresponding path program 1 times [2023-11-06 23:09:10,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:10,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345077553] [2023-11-06 23:09:10,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:10,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:10,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:19,206 INFO L134 CoverageAnalysis]: Checked inductivity of 10028 backedges. 4440 proven. 1612 refuted. 0 times theorem prover too weak. 3976 trivial. 0 not checked. [2023-11-06 23:09:19,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:19,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345077553] [2023-11-06 23:09:19,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345077553] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:09:19,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548604776] [2023-11-06 23:09:19,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:19,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:19,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:09:19,216 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:09:19,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 23:09:20,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:20,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 2727 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 23:09:20,030 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:20,230 INFO L134 CoverageAnalysis]: Checked inductivity of 10028 backedges. 5397 proven. 0 refuted. 0 times theorem prover too weak. 4631 trivial. 0 not checked. [2023-11-06 23:09:20,230 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:09:20,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548604776] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:20,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:09:20,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 11 [2023-11-06 23:09:20,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351971089] [2023-11-06 23:09:20,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:20,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:09:20,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:20,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:09:20,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-06 23:09:20,236 INFO L87 Difference]: Start difference. First operand 17112 states and 17433 transitions. Second operand has 3 states, 3 states have (on average 226.33333333333334) internal successors, (679), 3 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:21,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:21,369 INFO L93 Difference]: Finished difference Result 36196 states and 36890 transitions. [2023-11-06 23:09:21,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:09:21,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 226.33333333333334) internal successors, (679), 3 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2370 [2023-11-06 23:09:21,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:21,384 INFO L225 Difference]: With dead ends: 36196 [2023-11-06 23:09:21,385 INFO L226 Difference]: Without dead ends: 19415 [2023-11-06 23:09:21,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2380 GetRequests, 2371 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-06 23:09:21,392 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 221 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:21,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 422 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-06 23:09:21,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19415 states. [2023-11-06 23:09:21,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19415 to 18757. [2023-11-06 23:09:21,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18757 states, 18756 states have (on average 1.0180208999786735) internal successors, (19094), 18756 states have internal predecessors, (19094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:21,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18757 states to 18757 states and 19094 transitions. [2023-11-06 23:09:21,636 INFO L78 Accepts]: Start accepts. Automaton has 18757 states and 19094 transitions. Word has length 2370 [2023-11-06 23:09:21,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:21,637 INFO L495 AbstractCegarLoop]: Abstraction has 18757 states and 19094 transitions. [2023-11-06 23:09:21,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 226.33333333333334) internal successors, (679), 3 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:21,637 INFO L276 IsEmpty]: Start isEmpty. Operand 18757 states and 19094 transitions. [2023-11-06 23:09:21,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2502 [2023-11-06 23:09:21,673 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:21,675 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-06 23:09:21,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:21,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:21,885 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:09:21,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:21,886 INFO L85 PathProgramCache]: Analyzing trace with hash -562233559, now seen corresponding path program 1 times [2023-11-06 23:09:21,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:21,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750077893] [2023-11-06 23:09:21,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:21,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:22,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:30,920 INFO L134 CoverageAnalysis]: Checked inductivity of 11091 backedges. 4761 proven. 1743 refuted. 0 times theorem prover too weak. 4587 trivial. 0 not checked. [2023-11-06 23:09:30,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:30,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750077893] [2023-11-06 23:09:30,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750077893] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:09:30,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37844100] [2023-11-06 23:09:30,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:30,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:30,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:09:30,922 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:09:30,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 23:09:31,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:31,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 2855 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 23:09:31,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:35,660 INFO L134 CoverageAnalysis]: Checked inductivity of 11091 backedges. 7574 proven. 0 refuted. 0 times theorem prover too weak. 3517 trivial. 0 not checked. [2023-11-06 23:09:35,660 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:09:35,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37844100] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:35,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:09:35,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2023-11-06 23:09:35,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572311982] [2023-11-06 23:09:35,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:35,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:09:35,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:35,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:09:35,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-06 23:09:35,665 INFO L87 Difference]: Start difference. First operand 18757 states and 19094 transitions. Second operand has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:38,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:38,084 INFO L93 Difference]: Finished difference Result 38170 states and 38866 transitions. [2023-11-06 23:09:38,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:09:38,085 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2501 [2023-11-06 23:09:38,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:38,099 INFO L225 Difference]: With dead ends: 38170 [2023-11-06 23:09:38,100 INFO L226 Difference]: Without dead ends: 19744 [2023-11-06 23:09:38,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2511 GetRequests, 2501 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-06 23:09:38,108 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 350 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:38,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 32 Invalid, 1227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1147 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-06 23:09:38,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19744 states. [2023-11-06 23:09:38,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19744 to 19086. [2023-11-06 23:09:38,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19086 states, 19085 states have (on average 1.018181818181818) internal successors, (19432), 19085 states have internal predecessors, (19432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:38,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19086 states to 19086 states and 19432 transitions. [2023-11-06 23:09:38,393 INFO L78 Accepts]: Start accepts. Automaton has 19086 states and 19432 transitions. Word has length 2501 [2023-11-06 23:09:38,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:38,394 INFO L495 AbstractCegarLoop]: Abstraction has 19086 states and 19432 transitions. [2023-11-06 23:09:38,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:38,394 INFO L276 IsEmpty]: Start isEmpty. Operand 19086 states and 19432 transitions. [2023-11-06 23:09:38,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2641 [2023-11-06 23:09:38,434 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:38,435 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:38,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:38,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:38,645 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:09:38,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:38,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1543819328, now seen corresponding path program 1 times [2023-11-06 23:09:38,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:38,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607043476] [2023-11-06 23:09:38,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:38,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:39,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:43,463 INFO L134 CoverageAnalysis]: Checked inductivity of 13195 backedges. 9558 proven. 172 refuted. 0 times theorem prover too weak. 3465 trivial. 0 not checked. [2023-11-06 23:09:43,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:43,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607043476] [2023-11-06 23:09:43,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607043476] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:09:43,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882777022] [2023-11-06 23:09:43,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:43,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:43,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:09:43,472 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:09:43,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 23:09:44,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:44,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 3008 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:09:44,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:45,324 INFO L134 CoverageAnalysis]: Checked inductivity of 13195 backedges. 4940 proven. 310 refuted. 0 times theorem prover too weak. 7945 trivial. 0 not checked. [2023-11-06 23:09:45,325 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:09:45,647 INFO L134 CoverageAnalysis]: Checked inductivity of 13195 backedges. 5155 proven. 0 refuted. 0 times theorem prover too weak. 8040 trivial. 0 not checked. [2023-11-06 23:09:45,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882777022] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 23:09:45,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-06 23:09:45,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 4] total 10 [2023-11-06 23:09:45,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453708137] [2023-11-06 23:09:45,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:45,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:09:45,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:45,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:09:45,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-06 23:09:45,653 INFO L87 Difference]: Start difference. First operand 19086 states and 19432 transitions. Second operand has 3 states, 3 states have (on average 262.3333333333333) internal successors, (787), 3 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:46,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:46,883 INFO L93 Difference]: Finished difference Result 41460 states and 42232 transitions. [2023-11-06 23:09:46,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:09:46,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 262.3333333333333) internal successors, (787), 3 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2640 [2023-11-06 23:09:46,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:46,900 INFO L225 Difference]: With dead ends: 41460 [2023-11-06 23:09:46,900 INFO L226 Difference]: Without dead ends: 22705 [2023-11-06 23:09:46,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5284 GetRequests, 5276 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-06 23:09:46,908 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 122 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:46,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 53 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-06 23:09:46,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22705 states. [2023-11-06 23:09:47,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22705 to 19415. [2023-11-06 23:09:47,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19415 states, 19414 states have (on average 1.018234263933244) internal successors, (19768), 19414 states have internal predecessors, (19768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:47,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19415 states to 19415 states and 19768 transitions. [2023-11-06 23:09:47,127 INFO L78 Accepts]: Start accepts. Automaton has 19415 states and 19768 transitions. Word has length 2640 [2023-11-06 23:09:47,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:47,128 INFO L495 AbstractCegarLoop]: Abstraction has 19415 states and 19768 transitions. [2023-11-06 23:09:47,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 262.3333333333333) internal successors, (787), 3 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:47,128 INFO L276 IsEmpty]: Start isEmpty. Operand 19415 states and 19768 transitions. [2023-11-06 23:09:47,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2692 [2023-11-06 23:09:47,171 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:47,172 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-06 23:09:47,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:47,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-06 23:09:47,373 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:09:47,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:47,374 INFO L85 PathProgramCache]: Analyzing trace with hash -446189753, now seen corresponding path program 1 times [2023-11-06 23:09:47,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:47,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622180260] [2023-11-06 23:09:47,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:47,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:47,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:55,010 INFO L134 CoverageAnalysis]: Checked inductivity of 12923 backedges. 5412 proven. 632 refuted. 0 times theorem prover too weak. 6879 trivial. 0 not checked. [2023-11-06 23:09:55,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:55,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622180260] [2023-11-06 23:09:55,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622180260] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:09:55,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103595644] [2023-11-06 23:09:55,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:55,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:55,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:09:55,012 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:09:55,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 23:09:55,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:55,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 3066 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 23:09:55,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:56,417 INFO L134 CoverageAnalysis]: Checked inductivity of 12923 backedges. 8038 proven. 0 refuted. 0 times theorem prover too weak. 4885 trivial. 0 not checked. [2023-11-06 23:09:56,418 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:09:56,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103595644] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:56,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:09:56,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-11-06 23:09:56,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754574806] [2023-11-06 23:09:56,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:56,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:09:56,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:56,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:09:56,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:09:56,423 INFO L87 Difference]: Start difference. First operand 19415 states and 19768 transitions. Second operand has 4 states, 4 states have (on average 237.75) internal successors, (951), 4 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:57,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:57,892 INFO L93 Difference]: Finished difference Result 39157 states and 39869 transitions. [2023-11-06 23:09:57,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:09:57,893 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 237.75) internal successors, (951), 4 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2691 [2023-11-06 23:09:57,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:57,908 INFO L225 Difference]: With dead ends: 39157 [2023-11-06 23:09:57,908 INFO L226 Difference]: Without dead ends: 20073 [2023-11-06 23:09:57,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2699 GetRequests, 2692 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:09:57,916 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 469 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 1183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:57,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 64 Invalid, 1183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-06 23:09:57,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20073 states. [2023-11-06 23:09:58,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20073 to 18757. [2023-11-06 23:09:58,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18757 states, 18756 states have (on average 1.0178609511622947) internal successors, (19091), 18756 states have internal predecessors, (19091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:58,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18757 states to 18757 states and 19091 transitions. [2023-11-06 23:09:58,126 INFO L78 Accepts]: Start accepts. Automaton has 18757 states and 19091 transitions. Word has length 2691 [2023-11-06 23:09:58,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:58,127 INFO L495 AbstractCegarLoop]: Abstraction has 18757 states and 19091 transitions. [2023-11-06 23:09:58,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 237.75) internal successors, (951), 4 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:09:58,128 INFO L276 IsEmpty]: Start isEmpty. Operand 18757 states and 19091 transitions. [2023-11-06 23:09:58,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2735 [2023-11-06 23:09:58,171 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:58,172 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-06 23:09:58,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:58,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-06 23:09:58,374 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:09:58,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:58,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1626142055, now seen corresponding path program 1 times [2023-11-06 23:09:58,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:58,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427070000] [2023-11-06 23:09:58,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:58,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:58,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:08,348 INFO L134 CoverageAnalysis]: Checked inductivity of 13054 backedges. 5233 proven. 1976 refuted. 0 times theorem prover too weak. 5845 trivial. 0 not checked. [2023-11-06 23:10:08,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:08,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427070000] [2023-11-06 23:10:08,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427070000] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:10:08,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387030544] [2023-11-06 23:10:08,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:08,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:10:08,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:10:08,351 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:10:08,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f9c58-bb54-462e-9520-03777f2a22f5/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 23:10:09,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:09,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 3109 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 23:10:09,239 INFO L285 TraceCheckSpWp]: Computing forward predicates...