./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/bigshot_s.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a9653d-3784-4ff8-aff0-deda969a8fe8/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a9653d-3784-4ff8-aff0-deda969a8fe8/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_35a9653d-3784-4ff8-aff0-deda969a8fe8/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a9653d-3784-4ff8-aff0-deda969a8fe8/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/bigshot_s.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a9653d-3784-4ff8-aff0-deda969a8fe8/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_35a9653d-3784-4ff8-aff0-deda969a8fe8/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 4d8c741fd238f074816319de9a9bd5d97cd9b35eb7f53a276be973ea0c31ecbe --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:09:54,837 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:09:54,936 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a9653d-3784-4ff8-aff0-deda969a8fe8/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:09:54,940 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:09:54,941 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:09:54,964 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:09:54,965 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:09:54,965 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:09:54,966 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:09:54,967 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:09:54,972 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:09:54,973 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:09:54,974 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:09:54,978 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:09:54,979 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:09:54,980 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:09:54,980 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:09:54,981 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:09:54,981 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:09:54,982 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:09:54,982 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:09:54,983 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:09:54,983 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:09:54,984 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:09:54,984 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:09:54,985 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:09:54,985 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:09:54,986 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:09:54,986 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:09:54,987 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:09:54,987 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:09:54,988 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:09:54,988 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:09:54,989 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:09:54,989 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:09:54,990 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:09:54,990 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:09:54,991 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:09:54,991 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:09:55,003 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_35a9653d-3784-4ff8-aff0-deda969a8fe8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a9653d-3784-4ff8-aff0-deda969a8fe8/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d8c741fd238f074816319de9a9bd5d97cd9b35eb7f53a276be973ea0c31ecbe [2023-11-06 22:09:55,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:09:55,321 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:09:55,324 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:09:55,326 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:09:55,327 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:09:55,328 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a9653d-3784-4ff8-aff0-deda969a8fe8/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread/bigshot_s.i [2023-11-06 22:09:58,368 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:09:58,682 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:09:58,688 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a9653d-3784-4ff8-aff0-deda969a8fe8/sv-benchmarks/c/pthread/bigshot_s.i [2023-11-06 22:09:58,721 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a9653d-3784-4ff8-aff0-deda969a8fe8/bin/uautomizer-verify-WvqO1wxjHP/data/e32efd650/de5b918998564b85931c0ce04268e2e2/FLAG10916b773 [2023-11-06 22:09:58,740 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a9653d-3784-4ff8-aff0-deda969a8fe8/bin/uautomizer-verify-WvqO1wxjHP/data/e32efd650/de5b918998564b85931c0ce04268e2e2 [2023-11-06 22:09:58,747 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:09:58,749 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:09:58,755 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:09:58,755 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:09:58,761 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:09:58,764 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:09:58" (1/1) ... [2023-11-06 22:09:58,766 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c1ea86d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:58, skipping insertion in model container [2023-11-06 22:09:58,766 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:09:58" (1/1) ... [2023-11-06 22:09:58,840 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:09:59,586 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_35a9653d-3784-4ff8-aff0-deda969a8fe8/sv-benchmarks/c/pthread/bigshot_s.i[55202,55215] [2023-11-06 22:09:59,612 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:09:59,628 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:09:59,699 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_35a9653d-3784-4ff8-aff0-deda969a8fe8/sv-benchmarks/c/pthread/bigshot_s.i[55202,55215] [2023-11-06 22:09:59,711 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:09:59,824 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:09:59,825 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:59 WrapperNode [2023-11-06 22:09:59,825 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:09:59,827 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:09:59,827 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:09:59,827 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:09:59,835 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:59" (1/1) ... [2023-11-06 22:09:59,873 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:59" (1/1) ... [2023-11-06 22:09:59,914 INFO L138 Inliner]: procedures = 323, calls = 33, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2023-11-06 22:09:59,914 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:09:59,915 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:09:59,915 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:09:59,916 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:09:59,926 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:59" (1/1) ... [2023-11-06 22:09:59,927 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:59" (1/1) ... [2023-11-06 22:09:59,943 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:59" (1/1) ... [2023-11-06 22:09:59,944 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:59" (1/1) ... [2023-11-06 22:09:59,951 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:59" (1/1) ... [2023-11-06 22:09:59,954 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:59" (1/1) ... [2023-11-06 22:09:59,963 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:59" (1/1) ... [2023-11-06 22:09:59,965 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:59" (1/1) ... [2023-11-06 22:09:59,975 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:09:59,986 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:09:59,986 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:09:59,986 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:09:59,987 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:59" (1/1) ... [2023-11-06 22:09:59,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:10:00,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a9653d-3784-4ff8-aff0-deda969a8fe8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:10:00,024 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a9653d-3784-4ff8-aff0-deda969a8fe8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:10:00,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a9653d-3784-4ff8-aff0-deda969a8fe8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:10:00,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:10:00,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:10:00,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-06 22:10:00,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:10:00,066 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:10:00,066 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:10:00,066 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:10:00,066 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:10:00,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:10:00,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:10:00,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:10:00,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:10:00,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:10:00,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:10:00,069 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:10:00,244 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:10:00,247 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:10:00,466 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:10:00,474 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:10:00,474 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:10:00,477 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:10:00 BoogieIcfgContainer [2023-11-06 22:10:00,477 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:10:00,480 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:10:00,481 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:10:00,484 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:10:00,485 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:09:58" (1/3) ... [2023-11-06 22:10:00,485 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@196ca15d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:10:00, skipping insertion in model container [2023-11-06 22:10:00,486 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:59" (2/3) ... [2023-11-06 22:10:00,486 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@196ca15d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:10:00, skipping insertion in model container [2023-11-06 22:10:00,486 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:10:00" (3/3) ... [2023-11-06 22:10:00,488 INFO L112 eAbstractionObserver]: Analyzing ICFG bigshot_s.i [2023-11-06 22:10:00,498 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:10:00,510 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:10:00,510 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:10:00,511 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:10:00,582 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 22:10:00,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 91 transitions, 196 flow [2023-11-06 22:10:00,681 INFO L124 PetriNetUnfolderBase]: 5/89 cut-off events. [2023-11-06 22:10:00,681 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:10:00,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 89 events. 5/89 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 60 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2023-11-06 22:10:00,685 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 91 transitions, 196 flow [2023-11-06 22:10:00,697 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 74 transitions, 160 flow [2023-11-06 22:10:00,702 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:10:00,720 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 74 transitions, 160 flow [2023-11-06 22:10:00,723 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 74 transitions, 160 flow [2023-11-06 22:10:00,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 74 transitions, 160 flow [2023-11-06 22:10:00,776 INFO L124 PetriNetUnfolderBase]: 4/74 cut-off events. [2023-11-06 22:10:00,777 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:10:00,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 74 events. 4/74 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 53 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2023-11-06 22:10:00,779 INFO L119 LiptonReduction]: Number of co-enabled transitions 156 [2023-11-06 22:10:04,841 INFO L134 LiptonReduction]: Checked pairs total: 192 [2023-11-06 22:10:04,841 INFO L136 LiptonReduction]: Total number of compositions: 70 [2023-11-06 22:10:04,859 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:10:04,866 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;@31278fc1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:10:04,866 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-06 22:10:04,872 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:10:04,873 INFO L124 PetriNetUnfolderBase]: 2/13 cut-off events. [2023-11-06 22:10:04,873 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:10:04,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:04,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:04,875 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:10:04,880 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:04,881 INFO L85 PathProgramCache]: Analyzing trace with hash -2017670719, now seen corresponding path program 1 times [2023-11-06 22:10:04,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:04,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649178941] [2023-11-06 22:10:04,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:04,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:05,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:05,310 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 22:10:05,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:05,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649178941] [2023-11-06 22:10:05,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649178941] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:05,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:10:05,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:10:05,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603942195] [2023-11-06 22:10:05,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:05,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:10:05,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:05,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:10:05,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:10:05,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 161 [2023-11-06 22:10:05,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 14 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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 22:10:05,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:05,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 161 [2023-11-06 22:10:05,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:05,449 INFO L124 PetriNetUnfolderBase]: 5/20 cut-off events. [2023-11-06 22:10:05,449 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:10:05,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 20 events. 5/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 11 event pairs, 2 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 29. Up to 17 conditions per place. [2023-11-06 22:10:05,452 INFO L140 encePairwiseOnDemand]: 159/161 looper letters, 13 selfloop transitions, 1 changer transitions 0/14 dead transitions. [2023-11-06 22:10:05,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 14 transitions, 68 flow [2023-11-06 22:10:05,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:10:05,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:10:05,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 258 transitions. [2023-11-06 22:10:05,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5341614906832298 [2023-11-06 22:10:05,478 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 258 transitions. [2023-11-06 22:10:05,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 258 transitions. [2023-11-06 22:10:05,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:05,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 258 transitions. [2023-11-06 22:10:05,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 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 22:10:05,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 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 22:10:05,496 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 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 22:10:05,498 INFO L175 Difference]: Start difference. First operand has 19 places, 14 transitions, 40 flow. Second operand 3 states and 258 transitions. [2023-11-06 22:10:05,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 14 transitions, 68 flow [2023-11-06 22:10:05,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 14 transitions, 60 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 22:10:05,504 INFO L231 Difference]: Finished difference. Result has 17 places, 13 transitions, 32 flow [2023-11-06 22:10:05,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=32, PETRI_PLACES=17, PETRI_TRANSITIONS=13} [2023-11-06 22:10:05,511 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, -2 predicate places. [2023-11-06 22:10:05,511 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 13 transitions, 32 flow [2023-11-06 22:10:05,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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 22:10:05,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:05,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:05,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:10:05,513 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:10:05,515 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:05,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1873383557, now seen corresponding path program 1 times [2023-11-06 22:10:05,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:05,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300377620] [2023-11-06 22:10:05,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:05,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:05,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:06,264 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 22:10:06,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:06,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300377620] [2023-11-06 22:10:06,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300377620] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:06,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:10:06,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:10:06,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546701330] [2023-11-06 22:10:06,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:06,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:10:06,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:06,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:10:06,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:10:06,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 161 [2023-11-06 22:10:06,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 13 transitions, 32 flow. Second operand has 8 states, 8 states have (on average 67.5) internal successors, (540), 8 states have internal predecessors, (540), 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 22:10:06,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:06,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 161 [2023-11-06 22:10:06,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:06,804 INFO L124 PetriNetUnfolderBase]: 9/28 cut-off events. [2023-11-06 22:10:06,804 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:10:06,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 28 events. 9/28 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 23 event pairs, 1 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 47. Up to 13 conditions per place. [2023-11-06 22:10:06,806 INFO L140 encePairwiseOnDemand]: 157/161 looper letters, 14 selfloop transitions, 5 changer transitions 0/19 dead transitions. [2023-11-06 22:10:06,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 19 transitions, 82 flow [2023-11-06 22:10:06,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:10:06,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:10:06,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 350 transitions. [2023-11-06 22:10:06,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43478260869565216 [2023-11-06 22:10:06,809 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 350 transitions. [2023-11-06 22:10:06,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 350 transitions. [2023-11-06 22:10:06,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:06,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 350 transitions. [2023-11-06 22:10:06,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 70.0) internal successors, (350), 5 states have internal predecessors, (350), 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 22:10:06,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 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 22:10:06,815 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 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 22:10:06,815 INFO L175 Difference]: Start difference. First operand has 17 places, 13 transitions, 32 flow. Second operand 5 states and 350 transitions. [2023-11-06 22:10:06,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 19 transitions, 82 flow [2023-11-06 22:10:06,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 19 transitions, 81 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:10:06,817 INFO L231 Difference]: Finished difference. Result has 22 places, 16 transitions, 58 flow [2023-11-06 22:10:06,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=58, PETRI_PLACES=22, PETRI_TRANSITIONS=16} [2023-11-06 22:10:06,818 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 3 predicate places. [2023-11-06 22:10:06,818 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 16 transitions, 58 flow [2023-11-06 22:10:06,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 67.5) internal successors, (540), 8 states have internal predecessors, (540), 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 22:10:06,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:06,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:06,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:10:06,820 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:10:06,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:06,821 INFO L85 PathProgramCache]: Analyzing trace with hash -292157688, now seen corresponding path program 1 times [2023-11-06 22:10:06,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:06,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027529597] [2023-11-06 22:10:06,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:06,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:06,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:07,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:10:07,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:07,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027529597] [2023-11-06 22:10:07,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027529597] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:10:07,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035715873] [2023-11-06 22:10:07,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:07,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:07,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a9653d-3784-4ff8-aff0-deda969a8fe8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:10:07,379 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a9653d-3784-4ff8-aff0-deda969a8fe8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:10:07,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a9653d-3784-4ff8-aff0-deda969a8fe8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:10:07,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:07,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-06 22:10:07,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:10:07,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:07,626 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 22:10:07,656 INFO L322 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-11-06 22:10:07,657 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2023-11-06 22:10:07,765 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 22:10:07,942 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 22:10:07,945 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2023-11-06 22:10:08,013 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 22:10:08,014 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-11-06 22:10:08,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:10:08,065 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:10:08,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:10:08,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035715873] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:10:08,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:10:08,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 17 [2023-11-06 22:10:08,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540405319] [2023-11-06 22:10:08,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:10:08,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 22:10:08,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:08,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 22:10:08,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:10:09,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 161 [2023-11-06 22:10:09,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 16 transitions, 58 flow. Second operand has 18 states, 18 states have (on average 65.05555555555556) internal successors, (1171), 18 states have internal predecessors, (1171), 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 22:10:09,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:09,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 161 [2023-11-06 22:10:09,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:10,184 INFO L124 PetriNetUnfolderBase]: 15/43 cut-off events. [2023-11-06 22:10:10,184 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-06 22:10:10,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 43 events. 15/43 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 49 event pairs, 1 based on Foata normal form. 1/44 useless extension candidates. Maximal degree in co-relation 109. Up to 14 conditions per place. [2023-11-06 22:10:10,185 INFO L140 encePairwiseOnDemand]: 156/161 looper letters, 17 selfloop transitions, 8 changer transitions 3/28 dead transitions. [2023-11-06 22:10:10,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 28 transitions, 154 flow [2023-11-06 22:10:10,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:10:10,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:10:10,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 534 transitions. [2023-11-06 22:10:10,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41459627329192544 [2023-11-06 22:10:10,190 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 534 transitions. [2023-11-06 22:10:10,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 534 transitions. [2023-11-06 22:10:10,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:10,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 534 transitions. [2023-11-06 22:10:10,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 66.75) internal successors, (534), 8 states have internal predecessors, (534), 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 22:10:10,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 161.0) internal successors, (1449), 9 states have internal predecessors, (1449), 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 22:10:10,199 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 161.0) internal successors, (1449), 9 states have internal predecessors, (1449), 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 22:10:10,199 INFO L175 Difference]: Start difference. First operand has 22 places, 16 transitions, 58 flow. Second operand 8 states and 534 transitions. [2023-11-06 22:10:10,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 28 transitions, 154 flow [2023-11-06 22:10:10,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 28 transitions, 148 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-06 22:10:10,202 INFO L231 Difference]: Finished difference. Result has 31 places, 19 transitions, 98 flow [2023-11-06 22:10:10,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=47, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=98, PETRI_PLACES=31, PETRI_TRANSITIONS=19} [2023-11-06 22:10:10,203 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 12 predicate places. [2023-11-06 22:10:10,203 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 19 transitions, 98 flow [2023-11-06 22:10:10,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 65.05555555555556) internal successors, (1171), 18 states have internal predecessors, (1171), 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 22:10:10,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:10,205 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:10,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a9653d-3784-4ff8-aff0-deda969a8fe8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:10:10,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a9653d-3784-4ff8-aff0-deda969a8fe8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:10,419 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:10:10,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:10,419 INFO L85 PathProgramCache]: Analyzing trace with hash 379808197, now seen corresponding path program 2 times [2023-11-06 22:10:10,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:10,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999977140] [2023-11-06 22:10:10,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:10,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:10,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:11,213 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:10:11,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:11,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999977140] [2023-11-06 22:10:11,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999977140] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:10:11,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008123660] [2023-11-06 22:10:11,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:10:11,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:11,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a9653d-3784-4ff8-aff0-deda969a8fe8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:10:11,221 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a9653d-3784-4ff8-aff0-deda969a8fe8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:10:11,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a9653d-3784-4ff8-aff0-deda969a8fe8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:10:11,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:10:11,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:10:11,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-06 22:10:11,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:10:11,464 INFO L322 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2023-11-06 22:10:11,465 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 32 [2023-11-06 22:10:11,474 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 22:10:11,626 INFO L322 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-11-06 22:10:11,627 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-11-06 22:10:11,683 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 22:10:11,782 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 22:10:11,835 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 22:10:11,889 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 22:10:11,950 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 22:10:11,996 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:10:11,996 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:10:12,107 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_103 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_103) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| 2 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2023-11-06 22:10:12,178 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_103 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_103) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 4)))) is different from false [2023-11-06 22:10:12,407 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2023-11-06 22:10:12,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008123660] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:10:12,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:10:12,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 26 [2023-11-06 22:10:12,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775043342] [2023-11-06 22:10:12,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:10:12,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-06 22:10:12,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:12,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-06 22:10:12,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=528, Unknown=9, NotChecked=94, Total=702 [2023-11-06 22:10:12,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 161 [2023-11-06 22:10:12,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 19 transitions, 98 flow. Second operand has 27 states, 27 states have (on average 42.629629629629626) internal successors, (1151), 27 states have internal predecessors, (1151), 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 22:10:12,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:12,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 161 [2023-11-06 22:10:12,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:13,031 INFO L124 PetriNetUnfolderBase]: 13/40 cut-off events. [2023-11-06 22:10:13,031 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2023-11-06 22:10:13,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 40 events. 13/40 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 35 event pairs, 2 based on Foata normal form. 2/42 useless extension candidates. Maximal degree in co-relation 128. Up to 13 conditions per place. [2023-11-06 22:10:13,033 INFO L140 encePairwiseOnDemand]: 157/161 looper letters, 17 selfloop transitions, 9 changer transitions 0/26 dead transitions. [2023-11-06 22:10:13,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 26 transitions, 171 flow [2023-11-06 22:10:13,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:10:13,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:10:13,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 355 transitions. [2023-11-06 22:10:13,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27562111801242234 [2023-11-06 22:10:13,036 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 355 transitions. [2023-11-06 22:10:13,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 355 transitions. [2023-11-06 22:10:13,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:13,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 355 transitions. [2023-11-06 22:10:13,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 44.375) internal successors, (355), 8 states have internal predecessors, (355), 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 22:10:13,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 161.0) internal successors, (1449), 9 states have internal predecessors, (1449), 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 22:10:13,041 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 161.0) internal successors, (1449), 9 states have internal predecessors, (1449), 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 22:10:13,042 INFO L175 Difference]: Start difference. First operand has 31 places, 19 transitions, 98 flow. Second operand 8 states and 355 transitions. [2023-11-06 22:10:13,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 26 transitions, 171 flow [2023-11-06 22:10:13,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 26 transitions, 145 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-11-06 22:10:13,045 INFO L231 Difference]: Finished difference. Result has 35 places, 20 transitions, 108 flow [2023-11-06 22:10:13,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=108, PETRI_PLACES=35, PETRI_TRANSITIONS=20} [2023-11-06 22:10:13,046 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 16 predicate places. [2023-11-06 22:10:13,046 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 20 transitions, 108 flow [2023-11-06 22:10:13,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 42.629629629629626) internal successors, (1151), 27 states have internal predecessors, (1151), 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 22:10:13,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:13,047 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:13,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a9653d-3784-4ff8-aff0-deda969a8fe8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:10:13,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a9653d-3784-4ff8-aff0-deda969a8fe8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:13,254 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:10:13,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:13,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1111589558, now seen corresponding path program 3 times [2023-11-06 22:10:13,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:13,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369942340] [2023-11-06 22:10:13,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:13,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:13,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:14,054 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:10:14,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:14,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369942340] [2023-11-06 22:10:14,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369942340] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:10:14,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491357180] [2023-11-06 22:10:14,055 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:10:14,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:14,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a9653d-3784-4ff8-aff0-deda969a8fe8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:10:14,061 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a9653d-3784-4ff8-aff0-deda969a8fe8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:10:14,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a9653d-3784-4ff8-aff0-deda969a8fe8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:10:14,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-06 22:10:14,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:10:14,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-06 22:10:14,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:10:14,274 INFO L322 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-11-06 22:10:14,275 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2023-11-06 22:10:14,281 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 22:10:14,377 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 22:10:14,498 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 22:10:14,502 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2023-11-06 22:10:14,576 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 22:10:14,577 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-11-06 22:10:14,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:14,676 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 22:10:14,680 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-11-06 22:10:14,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:14,769 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 22:10:14,769 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-11-06 22:10:14,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:14,874 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 22:10:14,875 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-11-06 22:10:14,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:14,942 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 22:10:14,943 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-11-06 22:10:15,014 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:10:15,015 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:10:28,584 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~mem15#1_53| Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~mem15#1_55| Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_71| Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~mem15#1_54| Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_72| Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_73| Int)) (or (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_73| (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| 1)) (= 66 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| (store (store (store (store (select |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~mem15#1_55|) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_73| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~mem15#1_54|) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_72| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~mem15#1_53|) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_71| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) 0)) c_~v~0.base) c_~v~0.offset)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_72| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_73| 1)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_71| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_72| 1)))) is different from false [2023-11-06 22:10:58,095 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 4 refuted. 3 times theorem prover too weak. 0 trivial. 5 not checked. [2023-11-06 22:10:58,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491357180] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:10:58,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:10:58,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 9] total 29 [2023-11-06 22:10:58,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031950116] [2023-11-06 22:10:58,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:10:58,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-06 22:10:58,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:58,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-06 22:10:58,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=678, Unknown=16, NotChecked=54, Total=870 [2023-11-06 22:10:58,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 161 [2023-11-06 22:10:58,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 20 transitions, 108 flow. Second operand has 30 states, 30 states have (on average 42.6) internal successors, (1278), 30 states have internal predecessors, (1278), 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 22:10:58,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:58,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 161 [2023-11-06 22:10:58,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:59,440 INFO L124 PetriNetUnfolderBase]: 11/37 cut-off events. [2023-11-06 22:10:59,440 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-11-06 22:10:59,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 37 events. 11/37 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 29 event pairs, 1 based on Foata normal form. 3/40 useless extension candidates. Maximal degree in co-relation 111. Up to 10 conditions per place. [2023-11-06 22:10:59,441 INFO L140 encePairwiseOnDemand]: 156/161 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2023-11-06 22:10:59,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 26 transitions, 159 flow [2023-11-06 22:10:59,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:10:59,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-06 22:10:59,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 479 transitions. [2023-11-06 22:10:59,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2704686617730096 [2023-11-06 22:10:59,458 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 479 transitions. [2023-11-06 22:10:59,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 479 transitions. [2023-11-06 22:10:59,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:59,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 479 transitions. [2023-11-06 22:10:59,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 43.54545454545455) internal successors, (479), 11 states have internal predecessors, (479), 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 22:10:59,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 161.0) internal successors, (1932), 12 states have internal predecessors, (1932), 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 22:10:59,467 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 161.0) internal successors, (1932), 12 states have internal predecessors, (1932), 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 22:10:59,467 INFO L175 Difference]: Start difference. First operand has 35 places, 20 transitions, 108 flow. Second operand 11 states and 479 transitions. [2023-11-06 22:10:59,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 26 transitions, 159 flow [2023-11-06 22:10:59,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 26 transitions, 147 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-06 22:10:59,473 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2023-11-06 22:10:59,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2023-11-06 22:10:59,477 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 19 predicate places. [2023-11-06 22:10:59,477 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2023-11-06 22:10:59,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 42.6) internal successors, (1278), 30 states have internal predecessors, (1278), 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 22:10:59,481 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-06 22:10:59,481 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-06 22:10:59,482 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-06 22:10:59,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a9653d-3784-4ff8-aff0-deda969a8fe8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:10:59,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a9653d-3784-4ff8-aff0-deda969a8fe8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:59,693 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2023-11-06 22:10:59,695 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 22:10:59,696 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:10:59,699 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:10:59 BasicIcfg [2023-11-06 22:10:59,699 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:10:59,700 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:10:59,700 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:10:59,700 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:10:59,700 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:10:00" (3/4) ... [2023-11-06 22:10:59,702 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:10:59,706 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-06 22:10:59,706 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-06 22:10:59,711 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-11-06 22:10:59,711 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-06 22:10:59,712 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 22:10:59,712 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 22:10:59,712 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 22:10:59,766 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a9653d-3784-4ff8-aff0-deda969a8fe8/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:10:59,767 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a9653d-3784-4ff8-aff0-deda969a8fe8/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:10:59,767 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:10:59,768 INFO L158 Benchmark]: Toolchain (without parser) took 61018.72ms. Allocated memory was 144.7MB in the beginning and 184.5MB in the end (delta: 39.8MB). Free memory was 97.1MB in the beginning and 101.3MB in the end (delta: -4.1MB). Peak memory consumption was 37.8MB. Max. memory is 16.1GB. [2023-11-06 22:10:59,768 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 144.7MB. Free memory is still 113.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:10:59,768 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1070.91ms. Allocated memory is still 144.7MB. Free memory was 97.1MB in the beginning and 64.6MB in the end (delta: 32.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2023-11-06 22:10:59,769 INFO L158 Benchmark]: Boogie Procedure Inliner took 87.82ms. Allocated memory is still 144.7MB. Free memory was 64.6MB in the beginning and 62.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:10:59,769 INFO L158 Benchmark]: Boogie Preprocessor took 69.77ms. Allocated memory is still 144.7MB. Free memory was 62.0MB in the beginning and 60.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:10:59,769 INFO L158 Benchmark]: RCFGBuilder took 491.61ms. Allocated memory was 144.7MB in the beginning and 184.5MB in the end (delta: 39.8MB). Free memory was 60.4MB in the beginning and 149.8MB in the end (delta: -89.4MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. [2023-11-06 22:10:59,770 INFO L158 Benchmark]: TraceAbstraction took 59218.65ms. Allocated memory is still 184.5MB. Free memory was 149.8MB in the beginning and 105.1MB in the end (delta: 44.7MB). Peak memory consumption was 45.5MB. Max. memory is 16.1GB. [2023-11-06 22:10:59,770 INFO L158 Benchmark]: Witness Printer took 67.41ms. Allocated memory is still 184.5MB. Free memory was 105.1MB in the beginning and 101.3MB in the end (delta: 3.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:10:59,779 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 144.7MB. Free memory is still 113.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1070.91ms. Allocated memory is still 144.7MB. Free memory was 97.1MB in the beginning and 64.6MB in the end (delta: 32.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 87.82ms. Allocated memory is still 144.7MB. Free memory was 64.6MB in the beginning and 62.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 69.77ms. Allocated memory is still 144.7MB. Free memory was 62.0MB in the beginning and 60.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 491.61ms. Allocated memory was 144.7MB in the beginning and 184.5MB in the end (delta: 39.8MB). Free memory was 60.4MB in the beginning and 149.8MB in the end (delta: -89.4MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. * TraceAbstraction took 59218.65ms. Allocated memory is still 184.5MB. Free memory was 149.8MB in the beginning and 105.1MB in the end (delta: 44.7MB). Peak memory consumption was 45.5MB. Max. memory is 16.1GB. * Witness Printer took 67.41ms. Allocated memory is still 184.5MB. Free memory was 105.1MB in the beginning and 101.3MB in the end (delta: 3.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.1s, 77 PlacesBefore, 19 PlacesAfterwards, 74 TransitionsBefore, 14 TransitionsAfterwards, 156 CoEnabledTransitionPairs, 6 FixpointIterations, 33 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 70 TotalNumberOfCompositions, 192 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 174, independent: 163, independent conditional: 0, independent unconditional: 163, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 101, independent: 95, independent conditional: 0, independent unconditional: 95, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 174, independent: 68, independent conditional: 0, independent unconditional: 68, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 101, unknown conditional: 0, unknown unconditional: 101] , Statistics on independence cache: Total cache size (in pairs): 5, Positive cache size: 3, Positive conditional cache size: 0, Positive unconditional cache size: 3, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 1107]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 114 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 59.1s, OverallIterations: 5, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.2s, HoareTripleCheckerStatistics: 7 mSolverCounterUnknown, 867 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 710 mSDsluCounter, 761 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 139 IncrementalHoareTripleChecker+Unchecked, 736 mSDsCounter, 114 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3035 IncrementalHoareTripleChecker+Invalid, 3295 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 114 mSolverCounterUnsat, 25 mSDtfsCounter, 3035 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 156 GetRequests, 50 SyntacticMatches, 8 SemanticMatches, 98 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 45.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=4, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 48.6s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 150 ConstructedInterpolants, 25 QuantifiedInterpolants, 2474 SizeOfPredicates, 19 NumberOfNonLiveVariables, 597 ConjunctsInSsa, 118 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 9/78 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 22:10:59,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a9653d-3784-4ff8-aff0-deda969a8fe8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE