./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label14.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b176f1db-2e72-4c65-8600-359485b8356b/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b176f1db-2e72-4c65-8600-359485b8356b/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_b176f1db-2e72-4c65-8600-359485b8356b/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b176f1db-2e72-4c65-8600-359485b8356b/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label14.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b176f1db-2e72-4c65-8600-359485b8356b/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_b176f1db-2e72-4c65-8600-359485b8356b/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 6b9a8cf062c769ab6372057423b232460c4eac80bd30ee0857d87935f050ecf1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:59:58,728 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:59:58,823 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b176f1db-2e72-4c65-8600-359485b8356b/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 21:59:58,830 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:59:58,831 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:59:58,872 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:59:58,873 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:59:58,874 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:59:58,875 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:59:58,880 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:59:58,881 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:59:58,882 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:59:58,882 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:59:58,884 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:59:58,885 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:59:58,885 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:59:58,886 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:59:58,886 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:59:58,886 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:59:58,887 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:59:58,887 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:59:58,888 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:59:58,888 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:59:58,889 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:59:58,889 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:59:58,890 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:59:58,891 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:59:58,891 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:59:58,891 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:59:58,892 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:59:58,893 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:59:58,894 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:59:58,894 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:59:58,894 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:59:58,894 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:59:58,894 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:59:58,895 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:59:58,895 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:59:58,895 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:59:58,895 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_b176f1db-2e72-4c65-8600-359485b8356b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b176f1db-2e72-4c65-8600-359485b8356b/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b9a8cf062c769ab6372057423b232460c4eac80bd30ee0857d87935f050ecf1 [2023-11-06 21:59:59,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:59:59,294 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:59:59,297 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:59:59,298 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:59:59,299 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:59:59,300 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b176f1db-2e72-4c65-8600-359485b8356b/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/eca-rers2012/Problem13_label14.c [2023-11-06 22:00:02,391 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:00:03,008 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:00:03,009 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b176f1db-2e72-4c65-8600-359485b8356b/sv-benchmarks/c/eca-rers2012/Problem13_label14.c [2023-11-06 22:00:03,054 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b176f1db-2e72-4c65-8600-359485b8356b/bin/uautomizer-verify-WvqO1wxjHP/data/fbd373459/e6bb8d7a7ce843f294332b5481d3cf3b/FLAG6b6553ae9 [2023-11-06 22:00:03,072 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b176f1db-2e72-4c65-8600-359485b8356b/bin/uautomizer-verify-WvqO1wxjHP/data/fbd373459/e6bb8d7a7ce843f294332b5481d3cf3b [2023-11-06 22:00:03,081 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:00:03,084 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:00:03,090 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:00:03,091 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:00:03,096 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:00:03,097 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:00:03" (1/1) ... [2023-11-06 22:00:03,098 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@534d1794 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:03, skipping insertion in model container [2023-11-06 22:00:03,098 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:00:03" (1/1) ... [2023-11-06 22:00:03,294 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:00:03,672 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_b176f1db-2e72-4c65-8600-359485b8356b/sv-benchmarks/c/eca-rers2012/Problem13_label14.c[5911,5924] [2023-11-06 22:00:05,061 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:00:05,073 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:00:05,104 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_b176f1db-2e72-4c65-8600-359485b8356b/sv-benchmarks/c/eca-rers2012/Problem13_label14.c[5911,5924] [2023-11-06 22:00:05,898 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:00:05,929 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:00:05,930 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:05 WrapperNode [2023-11-06 22:00:05,930 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:00:05,932 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:00:05,932 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:00:05,932 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:00:05,940 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:05" (1/1) ... [2023-11-06 22:00:06,022 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:05" (1/1) ... [2023-11-06 22:00:06,623 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5584 [2023-11-06 22:00:06,624 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:00:06,625 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:00:06,626 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:00:06,626 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:00:06,635 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:05" (1/1) ... [2023-11-06 22:00:06,636 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:05" (1/1) ... [2023-11-06 22:00:06,902 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:05" (1/1) ... [2023-11-06 22:00:06,903 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:05" (1/1) ... [2023-11-06 22:00:07,282 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:05" (1/1) ... [2023-11-06 22:00:07,336 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:05" (1/1) ... [2023-11-06 22:00:07,418 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:05" (1/1) ... [2023-11-06 22:00:07,436 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:05" (1/1) ... [2023-11-06 22:00:07,592 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:00:07,594 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:00:07,594 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:00:07,594 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:00:07,595 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:05" (1/1) ... [2023-11-06 22:00:07,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:00:07,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b176f1db-2e72-4c65-8600-359485b8356b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:00:07,635 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b176f1db-2e72-4c65-8600-359485b8356b/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:00:07,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b176f1db-2e72-4c65-8600-359485b8356b/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:00:07,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:00:07,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:00:07,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:00:07,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:00:07,762 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:00:07,765 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:00:14,566 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:00:14,593 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:00:14,593 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:00:14,597 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:00:14 BoogieIcfgContainer [2023-11-06 22:00:14,597 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:00:14,600 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:00:14,600 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:00:14,603 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:00:14,603 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:00:03" (1/3) ... [2023-11-06 22:00:14,604 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@729cc88a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:00:14, skipping insertion in model container [2023-11-06 22:00:14,605 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:05" (2/3) ... [2023-11-06 22:00:14,605 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@729cc88a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:00:14, skipping insertion in model container [2023-11-06 22:00:14,605 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:00:14" (3/3) ... [2023-11-06 22:00:14,610 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label14.c [2023-11-06 22:00:14,630 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:00:14,631 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:00:14,720 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:00:14,726 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;@496d49d1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:00:14,727 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:00:14,739 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 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 22:00:14,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-06 22:00:14,750 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:00:14,751 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:00:14,752 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:00:14,760 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:00:14,761 INFO L85 PathProgramCache]: Analyzing trace with hash 751578873, now seen corresponding path program 1 times [2023-11-06 22:00:14,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:00:14,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79192396] [2023-11-06 22:00:14,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:00:14,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:00:14,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:00:15,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:00:15,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:00:15,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79192396] [2023-11-06 22:00:15,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79192396] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:00:15,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:00:15,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:00:15,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500254193] [2023-11-06 22:00:15,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:00:15,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:00:15,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:00:15,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:00:15,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:00:15,552 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 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 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 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 22:00:24,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:00:24,753 INFO L93 Difference]: Finished difference Result 3829 states and 7206 transitions. [2023-11-06 22:00:24,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:00:24,755 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 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 41 [2023-11-06 22:00:24,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:00:24,798 INFO L225 Difference]: With dead ends: 3829 [2023-11-06 22:00:24,798 INFO L226 Difference]: Without dead ends: 2664 [2023-11-06 22:00:24,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:00:24,809 INFO L413 NwaCegarLoop]: 761 mSDtfsCounter, 2711 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 4246 mSolverCounterSat, 1607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2711 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 5853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1607 IncrementalHoareTripleChecker+Valid, 4246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:00:24,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2711 Valid, 1067 Invalid, 5853 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1607 Valid, 4246 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2023-11-06 22:00:24,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2023-11-06 22:00:24,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 2663. [2023-11-06 22:00:24,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2663 states, 2662 states have (on average 1.460931630353118) internal successors, (3889), 2662 states have internal predecessors, (3889), 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 22:00:24,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 3889 transitions. [2023-11-06 22:00:24,995 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 3889 transitions. Word has length 41 [2023-11-06 22:00:24,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:00:24,996 INFO L495 AbstractCegarLoop]: Abstraction has 2663 states and 3889 transitions. [2023-11-06 22:00:24,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 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 22:00:24,996 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 3889 transitions. [2023-11-06 22:00:25,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-11-06 22:00:25,010 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:00:25,011 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-06 22:00:25,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:00:25,012 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:00:25,012 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:00:25,013 INFO L85 PathProgramCache]: Analyzing trace with hash 791032719, now seen corresponding path program 1 times [2023-11-06 22:00:25,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:00:25,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218134971] [2023-11-06 22:00:25,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:00:25,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:00:25,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:00:25,529 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-06 22:00:25,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:00:25,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218134971] [2023-11-06 22:00:25,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218134971] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:00:25,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:00:25,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:00:25,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389097333] [2023-11-06 22:00:25,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:00:25,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:00:25,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:00:25,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:00:25,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:00:25,537 INFO L87 Difference]: Start difference. First operand 2663 states and 3889 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 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 22:00:30,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:00:30,809 INFO L93 Difference]: Finished difference Result 6142 states and 9712 transitions. [2023-11-06 22:00:30,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:00:30,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 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 166 [2023-11-06 22:00:30,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:00:30,835 INFO L225 Difference]: With dead ends: 6142 [2023-11-06 22:00:30,835 INFO L226 Difference]: Without dead ends: 4268 [2023-11-06 22:00:30,839 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 22:00:30,841 INFO L413 NwaCegarLoop]: 1039 mSDtfsCounter, 743 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 2508 mSolverCounterSat, 778 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 778 IncrementalHoareTripleChecker+Valid, 2508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:00:30,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [743 Valid, 1188 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [778 Valid, 2508 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-11-06 22:00:30,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4268 states. [2023-11-06 22:00:30,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4268 to 4254. [2023-11-06 22:00:30,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4254 states, 4253 states have (on average 1.3515165765342112) internal successors, (5748), 4253 states have internal predecessors, (5748), 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 22:00:30,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4254 states to 4254 states and 5748 transitions. [2023-11-06 22:00:30,950 INFO L78 Accepts]: Start accepts. Automaton has 4254 states and 5748 transitions. Word has length 166 [2023-11-06 22:00:30,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:00:30,954 INFO L495 AbstractCegarLoop]: Abstraction has 4254 states and 5748 transitions. [2023-11-06 22:00:30,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 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 22:00:30,955 INFO L276 IsEmpty]: Start isEmpty. Operand 4254 states and 5748 transitions. [2023-11-06 22:00:30,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-11-06 22:00:30,959 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:00:30,960 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 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 22:00:30,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:00:30,960 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:00:30,961 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:00:30,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1372340963, now seen corresponding path program 1 times [2023-11-06 22:00:30,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:00:30,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548929585] [2023-11-06 22:00:30,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:00:30,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:00:31,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:00:31,361 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-06 22:00:31,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:00:31,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548929585] [2023-11-06 22:00:31,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548929585] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:00:31,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:00:31,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:00:31,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650359353] [2023-11-06 22:00:31,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:00:31,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:00:31,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:00:31,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:00:31,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:00:31,371 INFO L87 Difference]: Start difference. First operand 4254 states and 5748 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 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 22:00:36,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:00:36,519 INFO L93 Difference]: Finished difference Result 10897 states and 15274 transitions. [2023-11-06 22:00:36,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:00:36,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 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 208 [2023-11-06 22:00:36,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:00:36,567 INFO L225 Difference]: With dead ends: 10897 [2023-11-06 22:00:36,567 INFO L226 Difference]: Without dead ends: 7432 [2023-11-06 22:00:36,574 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 22:00:36,575 INFO L413 NwaCegarLoop]: 824 mSDtfsCounter, 905 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 2567 mSolverCounterSat, 755 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 3322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 755 IncrementalHoareTripleChecker+Valid, 2567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:00:36,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 955 Invalid, 3322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [755 Valid, 2567 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-11-06 22:00:36,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7432 states. [2023-11-06 22:00:36,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7432 to 7426. [2023-11-06 22:00:36,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7426 states, 7425 states have (on average 1.288888888888889) internal successors, (9570), 7425 states have internal predecessors, (9570), 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 22:00:36,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7426 states to 7426 states and 9570 transitions. [2023-11-06 22:00:36,758 INFO L78 Accepts]: Start accepts. Automaton has 7426 states and 9570 transitions. Word has length 208 [2023-11-06 22:00:36,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:00:36,759 INFO L495 AbstractCegarLoop]: Abstraction has 7426 states and 9570 transitions. [2023-11-06 22:00:36,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 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 22:00:36,760 INFO L276 IsEmpty]: Start isEmpty. Operand 7426 states and 9570 transitions. [2023-11-06 22:00:36,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-11-06 22:00:36,764 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:00:36,764 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:00:36,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:00:36,765 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:00:36,765 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:00:36,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1651057734, now seen corresponding path program 1 times [2023-11-06 22:00:36,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:00:36,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904941926] [2023-11-06 22:00:36,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:00:36,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:00:36,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:00:37,065 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-06 22:00:37,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:00:37,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904941926] [2023-11-06 22:00:37,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904941926] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:00:37,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:00:37,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:00:37,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148919859] [2023-11-06 22:00:37,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:00:37,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:00:37,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:00:37,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:00:37,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:00:37,069 INFO L87 Difference]: Start difference. First operand 7426 states and 9570 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 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 22:00:42,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:00:42,103 INFO L93 Difference]: Finished difference Result 19619 states and 25904 transitions. [2023-11-06 22:00:42,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:00:42,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 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 222 [2023-11-06 22:00:42,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:00:42,199 INFO L225 Difference]: With dead ends: 19619 [2023-11-06 22:00:42,199 INFO L226 Difference]: Without dead ends: 12982 [2023-11-06 22:00:42,210 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 22:00:42,220 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 907 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 2889 mSolverCounterSat, 540 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 3429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 540 IncrementalHoareTripleChecker+Valid, 2889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:00:42,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 637 Invalid, 3429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [540 Valid, 2889 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-11-06 22:00:42,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12982 states. [2023-11-06 22:00:42,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12982 to 12975. [2023-11-06 22:00:42,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12975 states, 12974 states have (on average 1.2719284723292739) internal successors, (16502), 12974 states have internal predecessors, (16502), 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 22:00:42,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12975 states to 12975 states and 16502 transitions. [2023-11-06 22:00:42,570 INFO L78 Accepts]: Start accepts. Automaton has 12975 states and 16502 transitions. Word has length 222 [2023-11-06 22:00:42,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:00:42,571 INFO L495 AbstractCegarLoop]: Abstraction has 12975 states and 16502 transitions. [2023-11-06 22:00:42,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 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 22:00:42,572 INFO L276 IsEmpty]: Start isEmpty. Operand 12975 states and 16502 transitions. [2023-11-06 22:00:42,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-11-06 22:00:42,577 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:00:42,578 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:00:42,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:00:42,578 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:00:42,579 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:00:42,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1939340195, now seen corresponding path program 1 times [2023-11-06 22:00:42,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:00:42,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13900085] [2023-11-06 22:00:42,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:00:42,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:00:42,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:00:42,916 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-11-06 22:00:42,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:00:42,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13900085] [2023-11-06 22:00:42,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13900085] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:00:42,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:00:42,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:00:42,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478088780] [2023-11-06 22:00:42,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:00:42,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:00:42,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:00:42,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:00:42,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:00:42,920 INFO L87 Difference]: Start difference. First operand 12975 states and 16502 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 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 22:00:47,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:00:47,763 INFO L93 Difference]: Finished difference Result 36180 states and 46592 transitions. [2023-11-06 22:00:47,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:00:47,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 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 238 [2023-11-06 22:00:47,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:00:47,816 INFO L225 Difference]: With dead ends: 36180 [2023-11-06 22:00:47,816 INFO L226 Difference]: Without dead ends: 23994 [2023-11-06 22:00:47,834 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 22:00:47,835 INFO L413 NwaCegarLoop]: 839 mSDtfsCounter, 857 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 2308 mSolverCounterSat, 869 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 3177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 869 IncrementalHoareTripleChecker+Valid, 2308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:00:47,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 986 Invalid, 3177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [869 Valid, 2308 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-11-06 22:00:47,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23994 states. [2023-11-06 22:00:48,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23994 to 22416. [2023-11-06 22:00:48,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22416 states, 22415 states have (on average 1.211153245594468) internal successors, (27148), 22415 states have internal predecessors, (27148), 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 22:00:48,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22416 states to 22416 states and 27148 transitions. [2023-11-06 22:00:48,261 INFO L78 Accepts]: Start accepts. Automaton has 22416 states and 27148 transitions. Word has length 238 [2023-11-06 22:00:48,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:00:48,262 INFO L495 AbstractCegarLoop]: Abstraction has 22416 states and 27148 transitions. [2023-11-06 22:00:48,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 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 22:00:48,262 INFO L276 IsEmpty]: Start isEmpty. Operand 22416 states and 27148 transitions. [2023-11-06 22:00:48,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2023-11-06 22:00:48,268 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:00:48,269 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:00:48,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:00:48,269 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:00:48,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:00:48,271 INFO L85 PathProgramCache]: Analyzing trace with hash -108620366, now seen corresponding path program 1 times [2023-11-06 22:00:48,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:00:48,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439986554] [2023-11-06 22:00:48,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:00:48,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:00:48,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:00:48,562 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-06 22:00:48,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:00:48,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439986554] [2023-11-06 22:00:48,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439986554] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:00:48,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:00:48,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:00:48,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957038400] [2023-11-06 22:00:48,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:00:48,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:00:48,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:00:48,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:00:48,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:00:48,565 INFO L87 Difference]: Start difference. First operand 22416 states and 27148 transitions. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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 22:00:53,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:00:53,605 INFO L93 Difference]: Finished difference Result 55858 states and 69068 transitions. [2023-11-06 22:00:53,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:00:53,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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 281 [2023-11-06 22:00:53,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:00:53,686 INFO L225 Difference]: With dead ends: 55858 [2023-11-06 22:00:53,686 INFO L226 Difference]: Without dead ends: 34231 [2023-11-06 22:00:53,711 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 22:00:53,712 INFO L413 NwaCegarLoop]: 809 mSDtfsCounter, 888 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2381 mSolverCounterSat, 914 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 3295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 914 IncrementalHoareTripleChecker+Valid, 2381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:00:53,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 926 Invalid, 3295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [914 Valid, 2381 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-06 22:00:53,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34231 states. [2023-11-06 22:00:54,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34231 to 33434. [2023-11-06 22:00:54,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33434 states, 33433 states have (on average 1.1906200460622738) internal successors, (39806), 33433 states have internal predecessors, (39806), 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 22:00:54,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33434 states to 33434 states and 39806 transitions. [2023-11-06 22:00:54,239 INFO L78 Accepts]: Start accepts. Automaton has 33434 states and 39806 transitions. Word has length 281 [2023-11-06 22:00:54,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:00:54,240 INFO L495 AbstractCegarLoop]: Abstraction has 33434 states and 39806 transitions. [2023-11-06 22:00:54,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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 22:00:54,241 INFO L276 IsEmpty]: Start isEmpty. Operand 33434 states and 39806 transitions. [2023-11-06 22:00:54,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2023-11-06 22:00:54,257 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:00:54,257 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:00:54,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:00:54,258 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:00:54,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:00:54,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1558582370, now seen corresponding path program 1 times [2023-11-06 22:00:54,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:00:54,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541035505] [2023-11-06 22:00:54,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:00:54,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:00:54,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:00:54,692 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 353 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-06 22:00:54,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:00:54,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541035505] [2023-11-06 22:00:54,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541035505] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:00:54,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:00:54,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:00:54,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083194524] [2023-11-06 22:00:54,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:00:54,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:00:54,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:00:54,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:00:54,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:00:54,696 INFO L87 Difference]: Start difference. First operand 33434 states and 39806 transitions. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 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 22:01:04,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:01:04,855 INFO L93 Difference]: Finished difference Result 117462 states and 141040 transitions. [2023-11-06 22:01:04,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:01:04,865 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 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 329 [2023-11-06 22:01:04,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:01:04,996 INFO L225 Difference]: With dead ends: 117462 [2023-11-06 22:01:04,996 INFO L226 Difference]: Without dead ends: 84817 [2023-11-06 22:01:05,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:01:05,024 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 1740 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 6066 mSolverCounterSat, 1187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1740 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 7253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1187 IncrementalHoareTripleChecker+Valid, 6066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:01:05,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1740 Valid, 691 Invalid, 7253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1187 Valid, 6066 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2023-11-06 22:01:05,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84817 states. [2023-11-06 22:01:05,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84817 to 84687. [2023-11-06 22:01:05,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84687 states, 84686 states have (on average 1.1723425359563564) internal successors, (99281), 84686 states have internal predecessors, (99281), 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 22:01:06,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84687 states to 84687 states and 99281 transitions. [2023-11-06 22:01:06,709 INFO L78 Accepts]: Start accepts. Automaton has 84687 states and 99281 transitions. Word has length 329 [2023-11-06 22:01:06,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:01:06,710 INFO L495 AbstractCegarLoop]: Abstraction has 84687 states and 99281 transitions. [2023-11-06 22:01:06,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 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 22:01:06,710 INFO L276 IsEmpty]: Start isEmpty. Operand 84687 states and 99281 transitions. [2023-11-06 22:01:06,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2023-11-06 22:01:06,722 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:01:06,722 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:01:06,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:01:06,723 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:01:06,723 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:06,724 INFO L85 PathProgramCache]: Analyzing trace with hash -350269877, now seen corresponding path program 1 times [2023-11-06 22:01:06,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:01:06,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727322778] [2023-11-06 22:01:06,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:06,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:01:06,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:07,600 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2023-11-06 22:01:07,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:01:07,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727322778] [2023-11-06 22:01:07,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727322778] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:01:07,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:01:07,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:01:07,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795452932] [2023-11-06 22:01:07,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:01:07,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:01:07,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:01:07,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:01:07,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:01:07,605 INFO L87 Difference]: Start difference. First operand 84687 states and 99281 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 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 22:01:12,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:01:12,794 INFO L93 Difference]: Finished difference Result 158351 states and 186725 transitions. [2023-11-06 22:01:12,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:01:12,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 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 338 [2023-11-06 22:01:12,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:01:12,927 INFO L225 Difference]: With dead ends: 158351 [2023-11-06 22:01:12,927 INFO L226 Difference]: Without dead ends: 84696 [2023-11-06 22:01:12,957 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 22:01:12,958 INFO L413 NwaCegarLoop]: 1020 mSDtfsCounter, 728 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 2705 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 2709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:01:12,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1201 Invalid, 2709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2705 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-06 22:01:13,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84696 states. [2023-11-06 22:01:14,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84696 to 84687. [2023-11-06 22:01:14,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84687 states, 84686 states have (on average 1.1715749946862528) internal successors, (99216), 84686 states have internal predecessors, (99216), 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 22:01:14,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84687 states to 84687 states and 99216 transitions. [2023-11-06 22:01:14,520 INFO L78 Accepts]: Start accepts. Automaton has 84687 states and 99216 transitions. Word has length 338 [2023-11-06 22:01:14,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:01:14,521 INFO L495 AbstractCegarLoop]: Abstraction has 84687 states and 99216 transitions. [2023-11-06 22:01:14,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 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 22:01:14,521 INFO L276 IsEmpty]: Start isEmpty. Operand 84687 states and 99216 transitions. [2023-11-06 22:01:14,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-11-06 22:01:14,528 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:01:14,529 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 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] [2023-11-06 22:01:14,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:01:14,529 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:01:14,530 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:14,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1068831891, now seen corresponding path program 1 times [2023-11-06 22:01:14,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:01:14,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658077283] [2023-11-06 22:01:14,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:14,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:01:14,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:17,021 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 246 proven. 113 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-06 22:01:17,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:01:17,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658077283] [2023-11-06 22:01:17,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658077283] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:01:17,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831369965] [2023-11-06 22:01:17,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:17,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:01:17,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b176f1db-2e72-4c65-8600-359485b8356b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:01:17,026 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b176f1db-2e72-4c65-8600-359485b8356b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:01:17,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b176f1db-2e72-4c65-8600-359485b8356b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:01:17,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:17,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:01:17,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:01:17,542 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-11-06 22:01:17,543 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:01:17,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831369965] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:01:17,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:01:17,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-11-06 22:01:17,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78754899] [2023-11-06 22:01:17,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:01:17,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:01:17,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:01:17,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:01:17,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:01:17,547 INFO L87 Difference]: Start difference. First operand 84687 states and 99216 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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 22:01:22,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:01:22,727 INFO L93 Difference]: Finished difference Result 168583 states and 197637 transitions. [2023-11-06 22:01:22,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:01:22,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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 367 [2023-11-06 22:01:22,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:01:22,833 INFO L225 Difference]: With dead ends: 168583 [2023-11-06 22:01:22,833 INFO L226 Difference]: Without dead ends: 84685 [2023-11-06 22:01:22,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:01:22,869 INFO L413 NwaCegarLoop]: 1365 mSDtfsCounter, 1123 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2467 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 2918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 2467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:01:22,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1123 Valid, 1447 Invalid, 2918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 2467 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-06 22:01:22,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84685 states. [2023-11-06 22:01:24,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84685 to 83897. [2023-11-06 22:01:24,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83897 states, 83896 states have (on average 1.1277891675407647) internal successors, (94617), 83896 states have internal predecessors, (94617), 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 22:01:24,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83897 states to 83897 states and 94617 transitions. [2023-11-06 22:01:24,252 INFO L78 Accepts]: Start accepts. Automaton has 83897 states and 94617 transitions. Word has length 367 [2023-11-06 22:01:24,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:01:24,253 INFO L495 AbstractCegarLoop]: Abstraction has 83897 states and 94617 transitions. [2023-11-06 22:01:24,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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 22:01:24,253 INFO L276 IsEmpty]: Start isEmpty. Operand 83897 states and 94617 transitions. [2023-11-06 22:01:24,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2023-11-06 22:01:24,264 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:01:24,265 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:01:24,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b176f1db-2e72-4c65-8600-359485b8356b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:01:24,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b176f1db-2e72-4c65-8600-359485b8356b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:01:24,478 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:01:24,479 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:24,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1731675346, now seen corresponding path program 1 times [2023-11-06 22:01:24,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:01:24,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699990793] [2023-11-06 22:01:24,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:24,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:01:24,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:24,929 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 484 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2023-11-06 22:01:24,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:01:24,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699990793] [2023-11-06 22:01:24,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699990793] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:01:24,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:01:24,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:01:24,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225509407] [2023-11-06 22:01:24,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:01:24,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:01:24,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:01:24,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:01:24,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:01:24,937 INFO L87 Difference]: Start difference. First operand 83897 states and 94617 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 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 22:01:30,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:01:30,720 INFO L93 Difference]: Finished difference Result 192985 states and 220141 transitions. [2023-11-06 22:01:30,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:01:30,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 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 397 [2023-11-06 22:01:30,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:01:30,831 INFO L225 Difference]: With dead ends: 192985 [2023-11-06 22:01:30,831 INFO L226 Difference]: Without dead ends: 109877 [2023-11-06 22:01:31,051 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 22:01:31,052 INFO L413 NwaCegarLoop]: 859 mSDtfsCounter, 892 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2423 mSolverCounterSat, 933 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 3356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 933 IncrementalHoareTripleChecker+Valid, 2423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:01:31,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [892 Valid, 944 Invalid, 3356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [933 Valid, 2423 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-11-06 22:01:31,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109877 states. [2023-11-06 22:01:32,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109877 to 108283. [2023-11-06 22:01:32,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108283 states, 108282 states have (on average 1.1321364585064924) internal successors, (122590), 108282 states have internal predecessors, (122590), 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 22:01:32,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108283 states to 108283 states and 122590 transitions. [2023-11-06 22:01:32,845 INFO L78 Accepts]: Start accepts. Automaton has 108283 states and 122590 transitions. Word has length 397 [2023-11-06 22:01:32,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:01:32,848 INFO L495 AbstractCegarLoop]: Abstraction has 108283 states and 122590 transitions. [2023-11-06 22:01:32,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 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 22:01:32,848 INFO L276 IsEmpty]: Start isEmpty. Operand 108283 states and 122590 transitions. [2023-11-06 22:01:32,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2023-11-06 22:01:32,872 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:01:32,873 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:01:32,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:01:32,873 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:01:32,874 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:32,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1783059347, now seen corresponding path program 1 times [2023-11-06 22:01:32,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:01:32,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779377516] [2023-11-06 22:01:32,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:32,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:01:32,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:33,333 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 382 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-11-06 22:01:33,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:01:33,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779377516] [2023-11-06 22:01:33,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779377516] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:01:33,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:01:33,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:01:33,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013020673] [2023-11-06 22:01:33,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:01:33,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:01:33,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:01:33,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:01:33,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:01:33,337 INFO L87 Difference]: Start difference. First operand 108283 states and 122590 transitions. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 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 22:01:39,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:01:39,351 INFO L93 Difference]: Finished difference Result 241763 states and 276153 transitions. [2023-11-06 22:01:39,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:01:39,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 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 435 [2023-11-06 22:01:39,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:01:39,515 INFO L225 Difference]: With dead ends: 241763 [2023-11-06 22:01:39,515 INFO L226 Difference]: Without dead ends: 134269 [2023-11-06 22:01:39,549 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 22:01:39,550 INFO L413 NwaCegarLoop]: 1787 mSDtfsCounter, 781 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2555 mSolverCounterSat, 715 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 1938 SdHoareTripleChecker+Invalid, 3270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 715 IncrementalHoareTripleChecker+Valid, 2555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:01:39,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 1938 Invalid, 3270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [715 Valid, 2555 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-11-06 22:01:39,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134269 states. [2023-11-06 22:01:41,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134269 to 134252. [2023-11-06 22:01:41,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134252 states, 134251 states have (on average 1.1154032372198346) internal successors, (149744), 134251 states have internal predecessors, (149744), 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 22:01:41,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134252 states to 134252 states and 149744 transitions. [2023-11-06 22:01:41,791 INFO L78 Accepts]: Start accepts. Automaton has 134252 states and 149744 transitions. Word has length 435 [2023-11-06 22:01:41,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:01:41,792 INFO L495 AbstractCegarLoop]: Abstraction has 134252 states and 149744 transitions. [2023-11-06 22:01:41,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 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 22:01:41,792 INFO L276 IsEmpty]: Start isEmpty. Operand 134252 states and 149744 transitions. [2023-11-06 22:01:41,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2023-11-06 22:01:41,804 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:01:41,804 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2023-11-06 22:01:41,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:01:41,804 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:01:41,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:41,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1750126426, now seen corresponding path program 1 times [2023-11-06 22:01:41,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:01:41,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765767631] [2023-11-06 22:01:41,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:41,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:01:41,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:44,478 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 315 proven. 113 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-06 22:01:44,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:01:44,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765767631] [2023-11-06 22:01:44,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765767631] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:01:44,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326447453] [2023-11-06 22:01:44,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:44,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:01:44,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b176f1db-2e72-4c65-8600-359485b8356b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:01:44,481 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b176f1db-2e72-4c65-8600-359485b8356b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:01:44,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b176f1db-2e72-4c65-8600-359485b8356b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:01:44,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:44,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:01:44,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:01:45,019 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 354 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-11-06 22:01:45,020 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:01:45,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326447453] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:01:45,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:01:45,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-11-06 22:01:45,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668893190] [2023-11-06 22:01:45,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:01:45,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:01:45,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:01:45,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:01:45,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:01:45,023 INFO L87 Difference]: Start difference. First operand 134252 states and 149744 transitions. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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 22:01:50,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:01:50,521 INFO L93 Difference]: Finished difference Result 261381 states and 293523 transitions. [2023-11-06 22:01:50,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:01:50,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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 471 [2023-11-06 22:01:50,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:01:50,705 INFO L225 Difference]: With dead ends: 261381 [2023-11-06 22:01:50,705 INFO L226 Difference]: Without dead ends: 143666 [2023-11-06 22:01:50,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 470 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:01:50,765 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 1135 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 2259 mSolverCounterSat, 853 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 3112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 853 IncrementalHoareTripleChecker+Valid, 2259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:01:50,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1135 Valid, 389 Invalid, 3112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [853 Valid, 2259 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-06 22:01:50,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143666 states. [2023-11-06 22:01:52,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143666 to 143666. [2023-11-06 22:01:52,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143666 states, 143665 states have (on average 1.110381790972053) internal successors, (159523), 143665 states have internal predecessors, (159523), 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 22:01:52,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143666 states to 143666 states and 159523 transitions. [2023-11-06 22:01:52,833 INFO L78 Accepts]: Start accepts. Automaton has 143666 states and 159523 transitions. Word has length 471 [2023-11-06 22:01:52,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:01:52,834 INFO L495 AbstractCegarLoop]: Abstraction has 143666 states and 159523 transitions. [2023-11-06 22:01:52,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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 22:01:52,834 INFO L276 IsEmpty]: Start isEmpty. Operand 143666 states and 159523 transitions. [2023-11-06 22:01:52,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2023-11-06 22:01:52,848 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:01:52,849 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-06 22:01:52,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b176f1db-2e72-4c65-8600-359485b8356b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:01:53,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b176f1db-2e72-4c65-8600-359485b8356b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-06 22:01:53,050 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:01:53,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:53,050 INFO L85 PathProgramCache]: Analyzing trace with hash -274368295, now seen corresponding path program 1 times [2023-11-06 22:01:53,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:01:53,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803388757] [2023-11-06 22:01:53,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:53,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:01:53,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:55,334 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 242 proven. 110 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-06 22:01:55,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:01:55,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803388757] [2023-11-06 22:01:55,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803388757] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:01:55,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147988864] [2023-11-06 22:01:55,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:55,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:01:55,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b176f1db-2e72-4c65-8600-359485b8356b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:01:55,338 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b176f1db-2e72-4c65-8600-359485b8356b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:01:55,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b176f1db-2e72-4c65-8600-359485b8356b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:01:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:55,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:01:55,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:01:57,058 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2023-11-06 22:01:57,059 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:01:57,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147988864] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:01:57,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:01:57,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-06 22:01:57,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593101622] [2023-11-06 22:01:57,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:01:57,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:01:57,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:01:57,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:01:57,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:01:57,067 INFO L87 Difference]: Start difference. First operand 143666 states and 159523 transitions. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 2 states have internal predecessors, (345), 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 22:02:02,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:02:02,181 INFO L93 Difference]: Finished difference Result 274744 states and 305966 transitions. [2023-11-06 22:02:02,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:02:02,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 2 states have internal predecessors, (345), 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 506 [2023-11-06 22:02:02,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:02:02,356 INFO L225 Difference]: With dead ends: 274744 [2023-11-06 22:02:02,356 INFO L226 Difference]: Without dead ends: 147615 [2023-11-06 22:02:02,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 505 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:02:02,416 INFO L413 NwaCegarLoop]: 1012 mSDtfsCounter, 544 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 2448 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 2557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 2448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:02:02,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 1142 Invalid, 2557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 2448 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-06 22:02:02,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147615 states. [2023-11-06 22:02:04,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147615 to 147605. [2023-11-06 22:02:04,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147605 states, 147604 states have (on average 1.108655591989377) internal successors, (163642), 147604 states have internal predecessors, (163642), 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 22:02:04,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147605 states to 147605 states and 163642 transitions. [2023-11-06 22:02:04,779 INFO L78 Accepts]: Start accepts. Automaton has 147605 states and 163642 transitions. Word has length 506 [2023-11-06 22:02:04,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:02:04,780 INFO L495 AbstractCegarLoop]: Abstraction has 147605 states and 163642 transitions. [2023-11-06 22:02:04,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 2 states have internal predecessors, (345), 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 22:02:04,780 INFO L276 IsEmpty]: Start isEmpty. Operand 147605 states and 163642 transitions. [2023-11-06 22:02:04,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2023-11-06 22:02:04,803 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:02:04,803 INFO L195 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-06 22:02:04,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b176f1db-2e72-4c65-8600-359485b8356b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-06 22:02:05,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b176f1db-2e72-4c65-8600-359485b8356b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-06 22:02:05,014 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:02:05,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:05,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1583154431, now seen corresponding path program 1 times [2023-11-06 22:02:05,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:05,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739376085] [2023-11-06 22:02:05,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:05,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:05,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:05,425 INFO L134 CoverageAnalysis]: Checked inductivity of 951 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 757 trivial. 0 not checked. [2023-11-06 22:02:05,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:05,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739376085] [2023-11-06 22:02:05,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739376085] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:02:05,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:02:05,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:02:05,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038299159] [2023-11-06 22:02:05,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:02:05,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:02:05,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:05,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:02:05,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:02:05,429 INFO L87 Difference]: Start difference. First operand 147605 states and 163642 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 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 22:02:09,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:02:09,324 INFO L93 Difference]: Finished difference Result 277082 states and 307974 transitions. [2023-11-06 22:02:09,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:02:09,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 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 526 [2023-11-06 22:02:09,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:02:09,507 INFO L225 Difference]: With dead ends: 277082 [2023-11-06 22:02:09,507 INFO L226 Difference]: Without dead ends: 146014 [2023-11-06 22:02:10,087 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 22:02:10,088 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 1633 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1500 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1633 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 1512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:02:10,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1633 Valid, 297 Invalid, 1512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1500 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-06 22:02:10,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146014 states. [2023-11-06 22:02:11,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146014 to 146013. [2023-11-06 22:02:11,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146013 states, 146012 states have (on average 1.1066350710900474) internal successors, (161582), 146012 states have internal predecessors, (161582), 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 22:02:12,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146013 states to 146013 states and 161582 transitions. [2023-11-06 22:02:12,100 INFO L78 Accepts]: Start accepts. Automaton has 146013 states and 161582 transitions. Word has length 526 [2023-11-06 22:02:12,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:02:12,101 INFO L495 AbstractCegarLoop]: Abstraction has 146013 states and 161582 transitions. [2023-11-06 22:02:12,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 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 22:02:12,102 INFO L276 IsEmpty]: Start isEmpty. Operand 146013 states and 161582 transitions. [2023-11-06 22:02:12,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 565 [2023-11-06 22:02:12,129 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:02:12,129 INFO L195 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-06 22:02:12,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:02:12,129 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:02:12,130 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:12,130 INFO L85 PathProgramCache]: Analyzing trace with hash 89916656, now seen corresponding path program 1 times [2023-11-06 22:02:12,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:12,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328871502] [2023-11-06 22:02:12,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:12,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:12,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:13,301 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 784 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2023-11-06 22:02:13,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:13,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328871502] [2023-11-06 22:02:13,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328871502] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:02:13,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:02:13,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:02:13,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089758043] [2023-11-06 22:02:13,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:02:13,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:02:13,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:13,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:02:13,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:02:13,318 INFO L87 Difference]: Start difference. First operand 146013 states and 161582 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 22:02:19,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:02:19,272 INFO L93 Difference]: Finished difference Result 291244 states and 322385 transitions. [2023-11-06 22:02:19,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:02:19,272 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 564 [2023-11-06 22:02:19,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:02:19,436 INFO L225 Difference]: With dead ends: 291244 [2023-11-06 22:02:19,436 INFO L226 Difference]: Without dead ends: 146020 [2023-11-06 22:02:19,472 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 22:02:19,473 INFO L413 NwaCegarLoop]: 1353 mSDtfsCounter, 831 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2446 mSolverCounterSat, 604 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 1434 SdHoareTripleChecker+Invalid, 3050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 604 IncrementalHoareTripleChecker+Valid, 2446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:02:19,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 1434 Invalid, 3050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [604 Valid, 2446 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-06 22:02:19,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146020 states.