./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_04-priv_multi_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a3928c-9d05-49dc-aec2-451a4e0fb351/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a3928c-9d05-49dc-aec2-451a4e0fb351/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a3928c-9d05-49dc-aec2-451a4e0fb351/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a3928c-9d05-49dc-aec2-451a4e0fb351/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_04-priv_multi_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a3928c-9d05-49dc-aec2-451a4e0fb351/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a3928c-9d05-49dc-aec2-451a4e0fb351/bin/uautomizer-ZsLfNo2U6R --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 d5772eac83993f999ed7a0d2c72e283c734e18136b4020af8f8e407255c20c04 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 16:41:42,476 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 16:41:42,479 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 16:41:42,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 16:41:42,498 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 16:41:42,499 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 16:41:42,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 16:41:42,503 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 16:41:42,504 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 16:41:42,506 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 16:41:42,507 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 16:41:42,508 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 16:41:42,508 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 16:41:42,510 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 16:41:42,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 16:41:42,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 16:41:42,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 16:41:42,514 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 16:41:42,516 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 16:41:42,518 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 16:41:42,519 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 16:41:42,525 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 16:41:42,526 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 16:41:42,527 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 16:41:42,537 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 16:41:42,537 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 16:41:42,538 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 16:41:42,539 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 16:41:42,539 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 16:41:42,540 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 16:41:42,541 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 16:41:42,542 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 16:41:42,542 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 16:41:42,543 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 16:41:42,545 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 16:41:42,545 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 16:41:42,546 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 16:41:42,546 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 16:41:42,546 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 16:41:42,555 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 16:41:42,556 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 16:41:42,560 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a3928c-9d05-49dc-aec2-451a4e0fb351/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 16:41:42,624 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 16:41:42,625 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 16:41:42,625 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 16:41:42,626 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 16:41:42,627 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 16:41:42,627 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 16:41:42,628 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 16:41:42,628 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 16:41:42,628 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 16:41:42,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 16:41:42,630 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 16:41:42,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 16:41:42,630 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 16:41:42,631 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 16:41:42,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 16:41:42,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 16:41:42,631 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 16:41:42,631 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 16:41:42,632 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 16:41:42,632 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 16:41:42,632 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 16:41:42,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 16:41:42,633 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 16:41:42,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 16:41:42,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:41:42,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 16:41:42,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 16:41:42,634 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 16:41:42,634 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 16:41:42,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 16:41:42,635 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 16:41:42,635 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 16:41:42,636 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 16:41:42,636 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 16:41:42,636 INFO L138 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_65a3928c-9d05-49dc-aec2-451a4e0fb351/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a3928c-9d05-49dc-aec2-451a4e0fb351/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d5772eac83993f999ed7a0d2c72e283c734e18136b4020af8f8e407255c20c04 [2022-11-25 16:41:42,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 16:41:42,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 16:41:42,994 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 16:41:42,996 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 16:41:42,996 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 16:41:43,000 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a3928c-9d05-49dc-aec2-451a4e0fb351/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/goblint-regression/13-privatized_04-priv_multi_true.i [2022-11-25 16:41:46,279 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 16:41:46,572 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 16:41:46,573 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a3928c-9d05-49dc-aec2-451a4e0fb351/sv-benchmarks/c/goblint-regression/13-privatized_04-priv_multi_true.i [2022-11-25 16:41:46,590 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a3928c-9d05-49dc-aec2-451a4e0fb351/bin/uautomizer-ZsLfNo2U6R/data/3caeb044a/cafdc54ee7834ff29051fbaa11824ffe/FLAG1bba462b8 [2022-11-25 16:41:46,608 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a3928c-9d05-49dc-aec2-451a4e0fb351/bin/uautomizer-ZsLfNo2U6R/data/3caeb044a/cafdc54ee7834ff29051fbaa11824ffe [2022-11-25 16:41:46,614 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 16:41:46,617 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 16:41:46,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 16:41:46,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 16:41:46,625 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 16:41:46,626 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:41:46" (1/1) ... [2022-11-25 16:41:46,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dacbb19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:41:46, skipping insertion in model container [2022-11-25 16:41:46,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:41:46" (1/1) ... [2022-11-25 16:41:46,636 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 16:41:46,701 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 16:41:46,941 WARN L237 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_65a3928c-9d05-49dc-aec2-451a4e0fb351/sv-benchmarks/c/goblint-regression/13-privatized_04-priv_multi_true.i[1087,1100] [2022-11-25 16:41:47,402 WARN L623 FunctionHandler]: Unknown extern function sleep [2022-11-25 16:41:47,408 WARN L623 FunctionHandler]: Unknown extern function sleep [2022-11-25 16:41:47,413 WARN L623 FunctionHandler]: Unknown extern function sleep [2022-11-25 16:41:47,423 WARN L623 FunctionHandler]: Unknown extern function sleep [2022-11-25 16:41:47,424 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:41:47,439 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 16:41:47,454 WARN L237 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_65a3928c-9d05-49dc-aec2-451a4e0fb351/sv-benchmarks/c/goblint-regression/13-privatized_04-priv_multi_true.i[1087,1100] [2022-11-25 16:41:47,504 WARN L623 FunctionHandler]: Unknown extern function sleep [2022-11-25 16:41:47,512 WARN L623 FunctionHandler]: Unknown extern function sleep [2022-11-25 16:41:47,517 WARN L623 FunctionHandler]: Unknown extern function sleep [2022-11-25 16:41:47,522 WARN L623 FunctionHandler]: Unknown extern function sleep [2022-11-25 16:41:47,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:41:47,596 INFO L208 MainTranslator]: Completed translation [2022-11-25 16:41:47,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:41:47 WrapperNode [2022-11-25 16:41:47,597 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 16:41:47,598 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 16:41:47,598 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 16:41:47,599 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 16:41:47,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:41:47" (1/1) ... [2022-11-25 16:41:47,648 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:41:47" (1/1) ... [2022-11-25 16:41:47,695 INFO L138 Inliner]: procedures = 271, calls = 45, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 105 [2022-11-25 16:41:47,696 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 16:41:47,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 16:41:47,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 16:41:47,697 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 16:41:47,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:41:47" (1/1) ... [2022-11-25 16:41:47,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:41:47" (1/1) ... [2022-11-25 16:41:47,730 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:41:47" (1/1) ... [2022-11-25 16:41:47,731 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:41:47" (1/1) ... [2022-11-25 16:41:47,739 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:41:47" (1/1) ... [2022-11-25 16:41:47,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:41:47" (1/1) ... [2022-11-25 16:41:47,767 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:41:47" (1/1) ... [2022-11-25 16:41:47,769 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:41:47" (1/1) ... [2022-11-25 16:41:47,786 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 16:41:47,787 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 16:41:47,787 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 16:41:47,787 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 16:41:47,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:41:47" (1/1) ... [2022-11-25 16:41:47,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:41:47,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a3928c-9d05-49dc-aec2-451a4e0fb351/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:41:47,828 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a3928c-9d05-49dc-aec2-451a4e0fb351/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 16:41:47,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a3928c-9d05-49dc-aec2-451a4e0fb351/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 16:41:47,869 INFO L130 BoogieDeclarations]: Found specification of procedure sleep [2022-11-25 16:41:47,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 16:41:47,869 INFO L130 BoogieDeclarations]: Found specification of procedure generate [2022-11-25 16:41:47,869 INFO L138 BoogieDeclarations]: Found implementation of procedure generate [2022-11-25 16:41:47,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 16:41:47,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 16:41:47,870 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 16:41:47,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 16:41:47,870 INFO L130 BoogieDeclarations]: Found specification of procedure dispose [2022-11-25 16:41:47,870 INFO L138 BoogieDeclarations]: Found implementation of procedure dispose [2022-11-25 16:41:47,870 INFO L130 BoogieDeclarations]: Found specification of procedure process [2022-11-25 16:41:47,870 INFO L138 BoogieDeclarations]: Found implementation of procedure process [2022-11-25 16:41:47,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 16:41:47,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 16:41:47,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 16:41:47,872 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 16:41:48,238 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 16:41:48,241 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 16:41:48,640 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 16:41:48,649 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 16:41:48,650 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-25 16:41:48,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:41:48 BoogieIcfgContainer [2022-11-25 16:41:48,653 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 16:41:48,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 16:41:48,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 16:41:48,659 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 16:41:48,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 04:41:46" (1/3) ... [2022-11-25 16:41:48,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@586eace0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:41:48, skipping insertion in model container [2022-11-25 16:41:48,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:41:47" (2/3) ... [2022-11-25 16:41:48,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@586eace0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:41:48, skipping insertion in model container [2022-11-25 16:41:48,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:41:48" (3/3) ... [2022-11-25 16:41:48,663 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_04-priv_multi_true.i [2022-11-25 16:41:48,673 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 16:41:48,685 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 16:41:48,686 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 16:41:48,686 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 16:41:48,757 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 16:41:48,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 159 transitions, 333 flow [2022-11-25 16:41:48,872 INFO L130 PetriNetUnfolder]: 12/156 cut-off events. [2022-11-25 16:41:48,872 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 16:41:48,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 156 events. 12/156 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 318 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 124. Up to 2 conditions per place. [2022-11-25 16:41:48,880 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 159 transitions, 333 flow [2022-11-25 16:41:48,886 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 154 places, 156 transitions, 321 flow [2022-11-25 16:41:48,890 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 16:41:48,907 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 154 places, 156 transitions, 321 flow [2022-11-25 16:41:48,910 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 154 places, 156 transitions, 321 flow [2022-11-25 16:41:48,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 156 transitions, 321 flow [2022-11-25 16:41:48,948 INFO L130 PetriNetUnfolder]: 12/156 cut-off events. [2022-11-25 16:41:48,948 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 16:41:48,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 156 events. 12/156 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 317 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 124. Up to 2 conditions per place. [2022-11-25 16:41:48,955 INFO L119 LiptonReduction]: Number of co-enabled transitions 9322 [2022-11-25 16:41:56,026 INFO L134 LiptonReduction]: Checked pairs total: 21617 [2022-11-25 16:41:56,028 INFO L136 LiptonReduction]: Total number of compositions: 140 [2022-11-25 16:41:56,058 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 16:41:56,068 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;@17b787f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 16:41:56,068 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-25 16:41:56,084 INFO L130 PetriNetUnfolder]: 6/36 cut-off events. [2022-11-25 16:41:56,085 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 16:41:56,085 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:41:56,085 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:41:56,086 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-25 16:41:56,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:41:56,093 INFO L85 PathProgramCache]: Analyzing trace with hash -684538487, now seen corresponding path program 1 times [2022-11-25 16:41:56,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:41:56,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188856589] [2022-11-25 16:41:56,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:41:56,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:41:56,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:41:56,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:41:56,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:41:56,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188856589] [2022-11-25 16:41:56,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188856589] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:41:56,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:41:56,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 16:41:56,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520268456] [2022-11-25 16:41:56,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:41:56,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:41:56,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:41:56,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:41:56,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:41:56,946 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 299 [2022-11-25 16:41:56,953 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 46 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 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) [2022-11-25 16:41:56,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:41:56,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 299 [2022-11-25 16:41:56,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:41:59,026 INFO L130 PetriNetUnfolder]: 14111/18988 cut-off events. [2022-11-25 16:41:59,026 INFO L131 PetriNetUnfolder]: For 89/89 co-relation queries the response was YES. [2022-11-25 16:41:59,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37699 conditions, 18988 events. 14111/18988 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 96647 event pairs, 3146 based on Foata normal form. 0/15311 useless extension candidates. Maximal degree in co-relation 37688. Up to 14002 conditions per place. [2022-11-25 16:41:59,145 INFO L137 encePairwiseOnDemand]: 288/299 looper letters, 62 selfloop transitions, 6 changer transitions 0/72 dead transitions. [2022-11-25 16:41:59,146 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 72 transitions, 295 flow [2022-11-25 16:41:59,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:41:59,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:41:59,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 491 transitions. [2022-11-25 16:41:59,165 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5473801560758083 [2022-11-25 16:41:59,165 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 491 transitions. [2022-11-25 16:41:59,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 491 transitions. [2022-11-25 16:41:59,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:41:59,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 491 transitions. [2022-11-25 16:41:59,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 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) [2022-11-25 16:41:59,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 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) [2022-11-25 16:41:59,188 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 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) [2022-11-25 16:41:59,189 INFO L175 Difference]: Start difference. First operand has 48 places, 46 transitions, 101 flow. Second operand 3 states and 491 transitions. [2022-11-25 16:41:59,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 72 transitions, 295 flow [2022-11-25 16:41:59,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 72 transitions, 290 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-25 16:41:59,200 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 126 flow [2022-11-25 16:41:59,203 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2022-11-25 16:41:59,207 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, -2 predicate places. [2022-11-25 16:41:59,210 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 126 flow [2022-11-25 16:41:59,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 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) [2022-11-25 16:41:59,211 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:41:59,212 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:41:59,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 16:41:59,213 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting disposeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-25 16:41:59,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:41:59,214 INFO L85 PathProgramCache]: Analyzing trace with hash 195411627, now seen corresponding path program 1 times [2022-11-25 16:41:59,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:41:59,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429774662] [2022-11-25 16:41:59,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:41:59,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:41:59,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:41:59,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:41:59,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:41:59,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429774662] [2022-11-25 16:41:59,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429774662] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:41:59,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:41:59,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:41:59,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069365849] [2022-11-25 16:41:59,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:41:59,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:41:59,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:41:59,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:41:59,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:41:59,489 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 299 [2022-11-25 16:41:59,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 142.75) internal successors, (571), 4 states have internal predecessors, (571), 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) [2022-11-25 16:41:59,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:41:59,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 299 [2022-11-25 16:41:59,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:42:03,319 INFO L130 PetriNetUnfolder]: 27923/38215 cut-off events. [2022-11-25 16:42:03,320 INFO L131 PetriNetUnfolder]: For 4789/4864 co-relation queries the response was YES. [2022-11-25 16:42:03,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81827 conditions, 38215 events. 27923/38215 cut-off events. For 4789/4864 co-relation queries the response was YES. Maximal size of possible extension queue 749. Compared 208705 event pairs, 5293 based on Foata normal form. 1/32453 useless extension candidates. Maximal degree in co-relation 81816. Up to 13918 conditions per place. [2022-11-25 16:42:03,711 INFO L137 encePairwiseOnDemand]: 293/299 looper letters, 114 selfloop transitions, 6 changer transitions 0/127 dead transitions. [2022-11-25 16:42:03,712 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 127 transitions, 565 flow [2022-11-25 16:42:03,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 16:42:03,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 16:42:03,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 818 transitions. [2022-11-25 16:42:03,716 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5471571906354515 [2022-11-25 16:42:03,716 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 818 transitions. [2022-11-25 16:42:03,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 818 transitions. [2022-11-25 16:42:03,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:42:03,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 818 transitions. [2022-11-25 16:42:03,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 163.6) internal successors, (818), 5 states have internal predecessors, (818), 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) [2022-11-25 16:42:03,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 299.0) internal successors, (1794), 6 states have internal predecessors, (1794), 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) [2022-11-25 16:42:03,725 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 299.0) internal successors, (1794), 6 states have internal predecessors, (1794), 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) [2022-11-25 16:42:03,726 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 126 flow. Second operand 5 states and 818 transitions. [2022-11-25 16:42:03,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 127 transitions, 565 flow [2022-11-25 16:42:03,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 127 transitions, 552 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 16:42:03,747 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 176 flow [2022-11-25 16:42:03,747 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=176, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2022-11-25 16:42:03,748 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 5 predicate places. [2022-11-25 16:42:03,748 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 176 flow [2022-11-25 16:42:03,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 142.75) internal successors, (571), 4 states have internal predecessors, (571), 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) [2022-11-25 16:42:03,750 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:42:03,750 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:42:03,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 16:42:03,751 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-25 16:42:03,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:42:03,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1507450776, now seen corresponding path program 1 times [2022-11-25 16:42:03,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:42:03,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513049062] [2022-11-25 16:42:03,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:42:03,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:42:03,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:42:03,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:42:03,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:42:03,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513049062] [2022-11-25 16:42:03,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513049062] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:42:03,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:42:03,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 16:42:03,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994772761] [2022-11-25 16:42:03,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:42:03,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:42:03,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:42:03,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:42:03,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:42:03,962 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 299 [2022-11-25 16:42:03,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 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) [2022-11-25 16:42:03,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:42:03,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 299 [2022-11-25 16:42:03,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:42:08,989 INFO L130 PetriNetUnfolder]: 42419/59433 cut-off events. [2022-11-25 16:42:08,990 INFO L131 PetriNetUnfolder]: For 23533/24277 co-relation queries the response was YES. [2022-11-25 16:42:09,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141119 conditions, 59433 events. 42419/59433 cut-off events. For 23533/24277 co-relation queries the response was YES. Maximal size of possible extension queue 1622. Compared 378553 event pairs, 10906 based on Foata normal form. 1048/55095 useless extension candidates. Maximal degree in co-relation 141103. Up to 33837 conditions per place. [2022-11-25 16:42:09,493 INFO L137 encePairwiseOnDemand]: 287/299 looper letters, 64 selfloop transitions, 13 changer transitions 0/87 dead transitions. [2022-11-25 16:42:09,493 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 87 transitions, 448 flow [2022-11-25 16:42:09,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:42:09,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:42:09,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 472 transitions. [2022-11-25 16:42:09,495 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5261984392419174 [2022-11-25 16:42:09,495 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 472 transitions. [2022-11-25 16:42:09,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 472 transitions. [2022-11-25 16:42:09,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:42:09,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 472 transitions. [2022-11-25 16:42:09,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 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) [2022-11-25 16:42:09,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 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) [2022-11-25 16:42:09,500 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 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) [2022-11-25 16:42:09,500 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 176 flow. Second operand 3 states and 472 transitions. [2022-11-25 16:42:09,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 87 transitions, 448 flow [2022-11-25 16:42:09,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 87 transitions, 448 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 16:42:09,512 INFO L231 Difference]: Finished difference. Result has 56 places, 61 transitions, 265 flow [2022-11-25 16:42:09,513 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=265, PETRI_PLACES=56, PETRI_TRANSITIONS=61} [2022-11-25 16:42:09,514 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 8 predicate places. [2022-11-25 16:42:09,515 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 61 transitions, 265 flow [2022-11-25 16:42:09,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 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) [2022-11-25 16:42:09,516 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:42:09,516 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:42:09,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 16:42:09,516 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-25 16:42:09,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:42:09,519 INFO L85 PathProgramCache]: Analyzing trace with hash 2045771392, now seen corresponding path program 1 times [2022-11-25 16:42:09,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:42:09,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727737936] [2022-11-25 16:42:09,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:42:09,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:42:09,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:42:09,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:42:09,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:42:09,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727737936] [2022-11-25 16:42:09,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727737936] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:42:09,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:42:09,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:42:09,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719102261] [2022-11-25 16:42:09,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:42:09,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:42:09,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:42:09,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:42:09,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:42:10,022 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 299 [2022-11-25 16:42:10,023 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 61 transitions, 265 flow. Second operand has 4 states, 4 states have (on average 140.75) internal successors, (563), 4 states have internal predecessors, (563), 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) [2022-11-25 16:42:10,024 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:42:10,024 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 299 [2022-11-25 16:42:10,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:42:16,050 INFO L130 PetriNetUnfolder]: 52407/71564 cut-off events. [2022-11-25 16:42:16,050 INFO L131 PetriNetUnfolder]: For 68845/71739 co-relation queries the response was YES. [2022-11-25 16:42:16,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212120 conditions, 71564 events. 52407/71564 cut-off events. For 68845/71739 co-relation queries the response was YES. Maximal size of possible extension queue 1725. Compared 421432 event pairs, 13723 based on Foata normal form. 1796/71768 useless extension candidates. Maximal degree in co-relation 212102. Up to 44439 conditions per place. [2022-11-25 16:42:16,540 INFO L137 encePairwiseOnDemand]: 290/299 looper letters, 143 selfloop transitions, 15 changer transitions 0/164 dead transitions. [2022-11-25 16:42:16,540 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 164 transitions, 1020 flow [2022-11-25 16:42:16,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 16:42:16,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 16:42:16,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 807 transitions. [2022-11-25 16:42:16,543 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.539799331103679 [2022-11-25 16:42:16,544 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 807 transitions. [2022-11-25 16:42:16,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 807 transitions. [2022-11-25 16:42:16,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:42:16,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 807 transitions. [2022-11-25 16:42:16,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 161.4) internal successors, (807), 5 states have internal predecessors, (807), 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) [2022-11-25 16:42:16,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 299.0) internal successors, (1794), 6 states have internal predecessors, (1794), 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) [2022-11-25 16:42:16,550 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 299.0) internal successors, (1794), 6 states have internal predecessors, (1794), 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) [2022-11-25 16:42:16,551 INFO L175 Difference]: Start difference. First operand has 56 places, 61 transitions, 265 flow. Second operand 5 states and 807 transitions. [2022-11-25 16:42:16,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 164 transitions, 1020 flow [2022-11-25 16:42:16,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 164 transitions, 978 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 16:42:16,580 INFO L231 Difference]: Finished difference. Result has 61 places, 70 transitions, 362 flow [2022-11-25 16:42:16,580 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=362, PETRI_PLACES=61, PETRI_TRANSITIONS=70} [2022-11-25 16:42:16,583 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 13 predicate places. [2022-11-25 16:42:16,584 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 70 transitions, 362 flow [2022-11-25 16:42:16,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.75) internal successors, (563), 4 states have internal predecessors, (563), 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) [2022-11-25 16:42:16,584 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:42:16,585 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:42:16,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 16:42:16,585 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-25 16:42:16,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:42:16,586 INFO L85 PathProgramCache]: Analyzing trace with hash -385076378, now seen corresponding path program 1 times [2022-11-25 16:42:16,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:42:16,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339924375] [2022-11-25 16:42:16,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:42:16,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:42:16,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:42:16,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:42:16,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:42:16,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339924375] [2022-11-25 16:42:16,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339924375] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:42:16,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:42:16,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 16:42:16,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608484092] [2022-11-25 16:42:16,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:42:16,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:42:16,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:42:16,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:42:16,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:42:16,963 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 299 [2022-11-25 16:42:16,964 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 70 transitions, 362 flow. Second operand has 4 states, 4 states have (on average 141.25) internal successors, (565), 4 states have internal predecessors, (565), 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) [2022-11-25 16:42:16,964 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:42:16,964 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 299 [2022-11-25 16:42:16,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:42:17,890 INFO L130 PetriNetUnfolder]: 6424/9888 cut-off events. [2022-11-25 16:42:17,890 INFO L131 PetriNetUnfolder]: For 10613/10936 co-relation queries the response was YES. [2022-11-25 16:42:17,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27509 conditions, 9888 events. 6424/9888 cut-off events. For 10613/10936 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 55890 event pairs, 1150 based on Foata normal form. 1125/10949 useless extension candidates. Maximal degree in co-relation 27488. Up to 8064 conditions per place. [2022-11-25 16:42:17,960 INFO L137 encePairwiseOnDemand]: 291/299 looper letters, 55 selfloop transitions, 10 changer transitions 0/76 dead transitions. [2022-11-25 16:42:17,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 76 transitions, 487 flow [2022-11-25 16:42:17,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 16:42:17,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 16:42:17,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 602 transitions. [2022-11-25 16:42:17,964 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5033444816053512 [2022-11-25 16:42:17,964 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 602 transitions. [2022-11-25 16:42:17,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 602 transitions. [2022-11-25 16:42:17,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:42:17,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 602 transitions. [2022-11-25 16:42:17,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 150.5) internal successors, (602), 4 states have internal predecessors, (602), 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) [2022-11-25 16:42:17,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 299.0) internal successors, (1495), 5 states have internal predecessors, (1495), 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) [2022-11-25 16:42:17,973 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 299.0) internal successors, (1495), 5 states have internal predecessors, (1495), 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) [2022-11-25 16:42:17,973 INFO L175 Difference]: Start difference. First operand has 61 places, 70 transitions, 362 flow. Second operand 4 states and 602 transitions. [2022-11-25 16:42:17,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 76 transitions, 487 flow [2022-11-25 16:42:17,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 76 transitions, 479 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-25 16:42:17,986 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 307 flow [2022-11-25 16:42:17,986 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=307, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2022-11-25 16:42:17,989 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 15 predicate places. [2022-11-25 16:42:17,989 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 307 flow [2022-11-25 16:42:17,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 141.25) internal successors, (565), 4 states have internal predecessors, (565), 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) [2022-11-25 16:42:17,990 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:42:17,990 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:42:17,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 16:42:17,991 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting disposeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-25 16:42:17,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:42:17,992 INFO L85 PathProgramCache]: Analyzing trace with hash -575656543, now seen corresponding path program 1 times [2022-11-25 16:42:17,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:42:17,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403849870] [2022-11-25 16:42:17,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:42:17,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:42:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:42:18,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:42:18,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:42:18,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403849870] [2022-11-25 16:42:18,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403849870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:42:18,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:42:18,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 16:42:18,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795120951] [2022-11-25 16:42:18,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:42:18,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 16:42:18,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:42:18,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 16:42:18,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:42:18,341 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 299 [2022-11-25 16:42:18,342 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 307 flow. Second operand has 5 states, 5 states have (on average 135.8) internal successors, (679), 5 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:42:18,342 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:42:18,342 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 299 [2022-11-25 16:42:18,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:42:19,126 INFO L130 PetriNetUnfolder]: 4258/6729 cut-off events. [2022-11-25 16:42:19,126 INFO L131 PetriNetUnfolder]: For 6674/6740 co-relation queries the response was YES. [2022-11-25 16:42:19,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18804 conditions, 6729 events. 4258/6729 cut-off events. For 6674/6740 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 37412 event pairs, 1089 based on Foata normal form. 423/7121 useless extension candidates. Maximal degree in co-relation 18781. Up to 3841 conditions per place. [2022-11-25 16:42:19,160 INFO L137 encePairwiseOnDemand]: 290/299 looper letters, 55 selfloop transitions, 16 changer transitions 0/82 dead transitions. [2022-11-25 16:42:19,161 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 82 transitions, 549 flow [2022-11-25 16:42:19,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 16:42:19,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 16:42:19,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 589 transitions. [2022-11-25 16:42:19,165 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49247491638795987 [2022-11-25 16:42:19,165 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 589 transitions. [2022-11-25 16:42:19,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 589 transitions. [2022-11-25 16:42:19,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:42:19,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 589 transitions. [2022-11-25 16:42:19,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 147.25) internal successors, (589), 4 states have internal predecessors, (589), 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) [2022-11-25 16:42:19,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 299.0) internal successors, (1495), 5 states have internal predecessors, (1495), 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) [2022-11-25 16:42:19,170 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 299.0) internal successors, (1495), 5 states have internal predecessors, (1495), 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) [2022-11-25 16:42:19,170 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 307 flow. Second operand 4 states and 589 transitions. [2022-11-25 16:42:19,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 82 transitions, 549 flow [2022-11-25 16:42:19,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 82 transitions, 526 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-25 16:42:19,184 INFO L231 Difference]: Finished difference. Result has 64 places, 60 transitions, 325 flow [2022-11-25 16:42:19,184 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=325, PETRI_PLACES=64, PETRI_TRANSITIONS=60} [2022-11-25 16:42:19,187 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 16 predicate places. [2022-11-25 16:42:19,187 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 60 transitions, 325 flow [2022-11-25 16:42:19,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 135.8) internal successors, (679), 5 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:42:19,188 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:42:19,188 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:42:19,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 16:42:19,189 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting disposeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-25 16:42:19,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:42:19,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1288836983, now seen corresponding path program 1 times [2022-11-25 16:42:19,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:42:19,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194060517] [2022-11-25 16:42:19,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:42:19,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:42:19,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:42:19,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:42:19,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:42:19,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194060517] [2022-11-25 16:42:19,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194060517] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:42:19,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:42:19,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 16:42:19,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521839403] [2022-11-25 16:42:19,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:42:19,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 16:42:19,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:42:19,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 16:42:19,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-25 16:42:19,684 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 299 [2022-11-25 16:42:19,685 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 60 transitions, 325 flow. Second operand has 8 states, 8 states have (on average 134.375) internal successors, (1075), 8 states have internal predecessors, (1075), 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) [2022-11-25 16:42:19,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:42:19,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 299 [2022-11-25 16:42:19,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:42:22,056 INFO L130 PetriNetUnfolder]: 11687/17362 cut-off events. [2022-11-25 16:42:22,057 INFO L131 PetriNetUnfolder]: For 18224/18224 co-relation queries the response was YES. [2022-11-25 16:42:22,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50265 conditions, 17362 events. 11687/17362 cut-off events. For 18224/18224 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 89406 event pairs, 2041 based on Foata normal form. 766/18125 useless extension candidates. Maximal degree in co-relation 50241. Up to 3798 conditions per place. [2022-11-25 16:42:22,133 INFO L137 encePairwiseOnDemand]: 284/299 looper letters, 344 selfloop transitions, 64 changer transitions 0/410 dead transitions. [2022-11-25 16:42:22,133 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 410 transitions, 2690 flow [2022-11-25 16:42:22,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-25 16:42:22,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-25 16:42:22,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3401 transitions. [2022-11-25 16:42:22,143 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4945470408608405 [2022-11-25 16:42:22,143 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3401 transitions. [2022-11-25 16:42:22,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3401 transitions. [2022-11-25 16:42:22,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:42:22,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3401 transitions. [2022-11-25 16:42:22,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 147.8695652173913) internal successors, (3401), 23 states have internal predecessors, (3401), 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) [2022-11-25 16:42:22,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 299.0) internal successors, (7176), 24 states have internal predecessors, (7176), 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) [2022-11-25 16:42:22,165 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 299.0) internal successors, (7176), 24 states have internal predecessors, (7176), 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) [2022-11-25 16:42:22,165 INFO L175 Difference]: Start difference. First operand has 64 places, 60 transitions, 325 flow. Second operand 23 states and 3401 transitions. [2022-11-25 16:42:22,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 410 transitions, 2690 flow [2022-11-25 16:42:22,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 410 transitions, 2584 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 16:42:22,198 INFO L231 Difference]: Finished difference. Result has 104 places, 115 transitions, 1028 flow [2022-11-25 16:42:22,198 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1028, PETRI_PLACES=104, PETRI_TRANSITIONS=115} [2022-11-25 16:42:22,199 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 56 predicate places. [2022-11-25 16:42:22,199 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 115 transitions, 1028 flow [2022-11-25 16:42:22,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 134.375) internal successors, (1075), 8 states have internal predecessors, (1075), 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) [2022-11-25 16:42:22,200 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:42:22,200 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:42:22,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 16:42:22,200 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-25 16:42:22,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:42:22,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1448677595, now seen corresponding path program 1 times [2022-11-25 16:42:22,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:42:22,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098728052] [2022-11-25 16:42:22,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:42:22,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:42:22,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:42:22,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:42:22,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:42:22,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098728052] [2022-11-25 16:42:22,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098728052] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:42:22,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:42:22,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 16:42:22,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450355827] [2022-11-25 16:42:22,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:42:22,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 16:42:22,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:42:22,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 16:42:22,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:42:22,496 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 299 [2022-11-25 16:42:22,497 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 115 transitions, 1028 flow. Second operand has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 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) [2022-11-25 16:42:22,497 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:42:22,497 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 299 [2022-11-25 16:42:22,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:42:24,304 INFO L130 PetriNetUnfolder]: 10042/15606 cut-off events. [2022-11-25 16:42:24,304 INFO L131 PetriNetUnfolder]: For 87745/88277 co-relation queries the response was YES. [2022-11-25 16:42:24,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60556 conditions, 15606 events. 10042/15606 cut-off events. For 87745/88277 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 88103 event pairs, 4401 based on Foata normal form. 307/15844 useless extension candidates. Maximal degree in co-relation 60511. Up to 6684 conditions per place. [2022-11-25 16:42:24,456 INFO L137 encePairwiseOnDemand]: 291/299 looper letters, 129 selfloop transitions, 24 changer transitions 0/174 dead transitions. [2022-11-25 16:42:24,457 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 174 transitions, 1750 flow [2022-11-25 16:42:24,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 16:42:24,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 16:42:24,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 771 transitions. [2022-11-25 16:42:24,460 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5157190635451505 [2022-11-25 16:42:24,460 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 771 transitions. [2022-11-25 16:42:24,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 771 transitions. [2022-11-25 16:42:24,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:42:24,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 771 transitions. [2022-11-25 16:42:24,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 154.2) internal successors, (771), 5 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:42:24,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 299.0) internal successors, (1794), 6 states have internal predecessors, (1794), 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) [2022-11-25 16:42:24,467 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 299.0) internal successors, (1794), 6 states have internal predecessors, (1794), 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) [2022-11-25 16:42:24,468 INFO L175 Difference]: Start difference. First operand has 104 places, 115 transitions, 1028 flow. Second operand 5 states and 771 transitions. [2022-11-25 16:42:24,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 174 transitions, 1750 flow [2022-11-25 16:42:24,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 174 transitions, 1722 flow, removed 14 selfloop flow, removed 0 redundant places. [2022-11-25 16:42:24,714 INFO L231 Difference]: Finished difference. Result has 109 places, 115 transitions, 1073 flow [2022-11-25 16:42:24,715 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=1000, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1073, PETRI_PLACES=109, PETRI_TRANSITIONS=115} [2022-11-25 16:42:24,715 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 61 predicate places. [2022-11-25 16:42:24,715 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 115 transitions, 1073 flow [2022-11-25 16:42:24,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 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) [2022-11-25 16:42:24,716 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:42:24,716 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:42:24,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 16:42:24,717 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting disposeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-25 16:42:24,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:42:24,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1148061747, now seen corresponding path program 1 times [2022-11-25 16:42:24,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:42:24,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053172054] [2022-11-25 16:42:24,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:42:24,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:42:24,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:42:25,308 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 16:42:25,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:42:25,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053172054] [2022-11-25 16:42:25,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053172054] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:42:25,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242839703] [2022-11-25 16:42:25,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:42:25,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:42:25,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a3928c-9d05-49dc-aec2-451a4e0fb351/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:42:25,315 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a3928c-9d05-49dc-aec2-451a4e0fb351/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:42:25,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a3928c-9d05-49dc-aec2-451a4e0fb351/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 16:42:25,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:42:25,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-25 16:42:25,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:42:25,696 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 16:42:25,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:42:25,859 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 16:42:25,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242839703] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:42:25,863 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:42:25,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2022-11-25 16:42:25,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979785277] [2022-11-25 16:42:25,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:42:25,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 16:42:25,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:42:25,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 16:42:25,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-25 16:42:26,003 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 299 [2022-11-25 16:42:26,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 115 transitions, 1073 flow. Second operand has 9 states, 9 states have (on average 132.77777777777777) internal successors, (1195), 9 states have internal predecessors, (1195), 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) [2022-11-25 16:42:26,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:42:26,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 299 [2022-11-25 16:42:26,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:42:28,561 INFO L130 PetriNetUnfolder]: 8596/12907 cut-off events. [2022-11-25 16:42:28,561 INFO L131 PetriNetUnfolder]: For 75294/75294 co-relation queries the response was YES. [2022-11-25 16:42:28,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45444 conditions, 12907 events. 8596/12907 cut-off events. For 75294/75294 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 65273 event pairs, 1931 based on Foata normal form. 762/13666 useless extension candidates. Maximal degree in co-relation 45396. Up to 4212 conditions per place. [2022-11-25 16:42:28,645 INFO L137 encePairwiseOnDemand]: 284/299 looper letters, 0 selfloop transitions, 0 changer transitions 263/263 dead transitions. [2022-11-25 16:42:28,645 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 263 transitions, 2433 flow [2022-11-25 16:42:28,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 16:42:28,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-25 16:42:28,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2263 transitions. [2022-11-25 16:42:28,653 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4730351170568562 [2022-11-25 16:42:28,654 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2263 transitions. [2022-11-25 16:42:28,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2263 transitions. [2022-11-25 16:42:28,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:42:28,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2263 transitions. [2022-11-25 16:42:28,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 141.4375) internal successors, (2263), 16 states have internal predecessors, (2263), 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) [2022-11-25 16:42:28,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 299.0) internal successors, (5083), 17 states have internal predecessors, (5083), 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) [2022-11-25 16:42:28,670 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 299.0) internal successors, (5083), 17 states have internal predecessors, (5083), 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) [2022-11-25 16:42:28,670 INFO L175 Difference]: Start difference. First operand has 109 places, 115 transitions, 1073 flow. Second operand 16 states and 2263 transitions. [2022-11-25 16:42:28,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 263 transitions, 2433 flow [2022-11-25 16:42:28,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 263 transitions, 2324 flow, removed 17 selfloop flow, removed 6 redundant places. [2022-11-25 16:42:28,888 INFO L231 Difference]: Finished difference. Result has 114 places, 0 transitions, 0 flow [2022-11-25 16:42:28,888 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=879, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=0, PETRI_PLACES=114, PETRI_TRANSITIONS=0} [2022-11-25 16:42:28,889 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 66 predicate places. [2022-11-25 16:42:28,889 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 0 transitions, 0 flow [2022-11-25 16:42:28,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 132.77777777777777) internal successors, (1195), 9 states have internal predecessors, (1195), 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) [2022-11-25 16:42:28,892 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-11-25 16:42:28,893 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 6 remaining) [2022-11-25 16:42:28,893 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-11-25 16:42:28,893 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2022-11-25 16:42:28,893 INFO L805 garLoopResultBuilder]: Registering result SAFE for location disposeErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-11-25 16:42:28,894 INFO L805 garLoopResultBuilder]: Registering result SAFE for location disposeErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-11-25 16:42:28,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a3928c-9d05-49dc-aec2-451a4e0fb351/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 16:42:29,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a3928c-9d05-49dc-aec2-451a4e0fb351/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:42:29,101 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:42:29,106 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 16:42:29,106 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 16:42:29,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 04:42:29 BasicIcfg [2022-11-25 16:42:29,109 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 16:42:29,109 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 16:42:29,109 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 16:42:29,110 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 16:42:29,110 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:41:48" (3/4) ... [2022-11-25 16:42:29,114 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 16:42:29,121 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure process [2022-11-25 16:42:29,121 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure dispose [2022-11-25 16:42:29,121 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure generate [2022-11-25 16:42:29,127 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-11-25 16:42:29,127 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-25 16:42:29,127 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-25 16:42:29,128 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 16:42:29,163 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a3928c-9d05-49dc-aec2-451a4e0fb351/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 16:42:29,164 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 16:42:29,164 INFO L158 Benchmark]: Toolchain (without parser) took 42547.53ms. Allocated memory was 125.8MB in the beginning and 11.3GB in the end (delta: 11.2GB). Free memory was 88.2MB in the beginning and 8.7GB in the end (delta: -8.6GB). Peak memory consumption was 2.6GB. Max. memory is 16.1GB. [2022-11-25 16:42:29,165 INFO L158 Benchmark]: CDTParser took 2.32ms. Allocated memory is still 125.8MB. Free memory was 92.4MB in the beginning and 92.3MB in the end (delta: 79.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 16:42:29,165 INFO L158 Benchmark]: CACSL2BoogieTranslator took 977.11ms. Allocated memory is still 125.8MB. Free memory was 88.0MB in the beginning and 57.4MB in the end (delta: 30.5MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-11-25 16:42:29,165 INFO L158 Benchmark]: Boogie Procedure Inliner took 97.83ms. Allocated memory is still 125.8MB. Free memory was 57.4MB in the beginning and 54.7MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 16:42:29,166 INFO L158 Benchmark]: Boogie Preprocessor took 89.32ms. Allocated memory is still 125.8MB. Free memory was 54.7MB in the beginning and 52.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 16:42:29,166 INFO L158 Benchmark]: RCFGBuilder took 866.19ms. Allocated memory was 125.8MB in the beginning and 155.2MB in the end (delta: 29.4MB). Free memory was 52.0MB in the beginning and 117.9MB in the end (delta: -65.9MB). Peak memory consumption was 25.5MB. Max. memory is 16.1GB. [2022-11-25 16:42:29,167 INFO L158 Benchmark]: TraceAbstraction took 40453.78ms. Allocated memory was 155.2MB in the beginning and 11.3GB in the end (delta: 11.2GB). Free memory was 116.7MB in the beginning and 8.7GB in the end (delta: -8.6GB). Peak memory consumption was 2.6GB. Max. memory is 16.1GB. [2022-11-25 16:42:29,167 INFO L158 Benchmark]: Witness Printer took 54.44ms. Allocated memory is still 11.3GB. Free memory was 8.7GB in the beginning and 8.7GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 16:42:29,177 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.32ms. Allocated memory is still 125.8MB. Free memory was 92.4MB in the beginning and 92.3MB in the end (delta: 79.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 977.11ms. Allocated memory is still 125.8MB. Free memory was 88.0MB in the beginning and 57.4MB in the end (delta: 30.5MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 97.83ms. Allocated memory is still 125.8MB. Free memory was 57.4MB in the beginning and 54.7MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 89.32ms. Allocated memory is still 125.8MB. Free memory was 54.7MB in the beginning and 52.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 866.19ms. Allocated memory was 125.8MB in the beginning and 155.2MB in the end (delta: 29.4MB). Free memory was 52.0MB in the beginning and 117.9MB in the end (delta: -65.9MB). Peak memory consumption was 25.5MB. Max. memory is 16.1GB. * TraceAbstraction took 40453.78ms. Allocated memory was 155.2MB in the beginning and 11.3GB in the end (delta: 11.2GB). Free memory was 116.7MB in the beginning and 8.7GB in the end (delta: -8.6GB). Peak memory consumption was 2.6GB. Max. memory is 16.1GB. * Witness Printer took 54.44ms. Allocated memory is still 11.3GB. Free memory was 8.7GB in the beginning and 8.7GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.1s, 154 PlacesBefore, 48 PlacesAfterwards, 156 TransitionsBefore, 46 TransitionsAfterwards, 9322 CoEnabledTransitionPairs, 8 FixpointIterations, 34 TrivialSequentialCompositions, 78 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 24 ConcurrentYvCompositions, 4 ChoiceCompositions, 140 TotalNumberOfCompositions, 21617 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 11038, independent: 10619, independent conditional: 0, independent unconditional: 10619, dependent: 419, dependent conditional: 0, dependent unconditional: 419, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 6213, independent: 6115, independent conditional: 0, independent unconditional: 6115, dependent: 98, dependent conditional: 0, dependent unconditional: 98, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 6213, independent: 5998, independent conditional: 0, independent unconditional: 5998, dependent: 215, dependent conditional: 0, dependent unconditional: 215, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 215, independent: 117, independent conditional: 0, independent unconditional: 117, dependent: 98, dependent conditional: 0, dependent unconditional: 98, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 447, independent: 181, independent conditional: 0, independent unconditional: 181, dependent: 266, dependent conditional: 0, dependent unconditional: 266, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 11038, independent: 4504, independent conditional: 0, independent unconditional: 4504, dependent: 321, dependent conditional: 0, dependent unconditional: 321, unknown: 6213, unknown conditional: 0, unknown unconditional: 6213] , Statistics on independence cache: Total cache size (in pairs): 553, Positive cache size: 499, Positive conditional cache size: 0, Positive unconditional cache size: 499, Negative cache size: 54, Negative conditional cache size: 0, Negative unconditional cache size: 54, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 216 locations, 6 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: 40.3s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 28.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1252 SdHoareTripleChecker+Valid, 3.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1007 mSDsluCounter, 445 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 396 mSDsCounter, 113 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2988 IncrementalHoareTripleChecker+Invalid, 3101 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 113 mSolverCounterUnsat, 49 mSDtfsCounter, 2988 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 132 GetRequests, 67 SyntacticMatches, 5 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1073occurred in iteration=8, InterpolantAutomatonStates: 68, 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, 0.2s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 189 NumberOfCodeBlocks, 189 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 209 ConstructedInterpolants, 0 QuantifiedInterpolants, 1289 SizeOfPredicates, 8 NumberOfNonLiveVariables, 249 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 11 InterpolantComputations, 8 PerfectInterpolantSequences, 18/24 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-25 16:42:29,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a3928c-9d05-49dc-aec2-451a4e0fb351/bin/uautomizer-ZsLfNo2U6R/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