./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/peterson.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_6a74fd93-7162-4244-bb2d-71255fc742eb/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a74fd93-7162-4244-bb2d-71255fc742eb/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a74fd93-7162-4244-bb2d-71255fc742eb/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a74fd93-7162-4244-bb2d-71255fc742eb/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/peterson.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a74fd93-7162-4244-bb2d-71255fc742eb/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a74fd93-7162-4244-bb2d-71255fc742eb/bin/uautomizer-tPACEb0tL8 --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 ee3d1a41e169e13d6fb9bc974b1d8f7c8de5421cb2dfbc7e3d9a400662188398 --- 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-e04fb08 [2022-11-16 12:40:48,422 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:40:48,425 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:40:48,457 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:40:48,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:40:48,459 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:40:48,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:40:48,462 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:40:48,474 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:40:48,479 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:40:48,480 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:40:48,481 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:40:48,482 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:40:48,483 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:40:48,484 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:40:48,485 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:40:48,485 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:40:48,486 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:40:48,488 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:40:48,490 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:40:48,497 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:40:48,499 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:40:48,503 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:40:48,504 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:40:48,516 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:40:48,521 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:40:48,521 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:40:48,523 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:40:48,524 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:40:48,526 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:40:48,526 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:40:48,527 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:40:48,528 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:40:48,530 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:40:48,531 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:40:48,532 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:40:48,533 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:40:48,533 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:40:48,533 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:40:48,534 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:40:48,535 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:40:48,536 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a74fd93-7162-4244-bb2d-71255fc742eb/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:40:48,580 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:40:48,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:40:48,581 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:40:48,581 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:40:48,582 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:40:48,582 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:40:48,582 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:40:48,583 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:40:48,583 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:40:48,583 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:40:48,584 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:40:48,584 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:40:48,584 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:40:48,584 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:40:48,584 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:40:48,585 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:40:48,585 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:40:48,585 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:40:48,585 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:40:48,585 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:40:48,586 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:40:48,586 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:40:48,586 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:40:48,586 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:40:48,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:40:48,587 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:40:48,587 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:40:48,587 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:40:48,587 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:40:48,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:40:48,588 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:40:48,588 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:40:48,588 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:40:48,589 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_6a74fd93-7162-4244-bb2d-71255fc742eb/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a74fd93-7162-4244-bb2d-71255fc742eb/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ee3d1a41e169e13d6fb9bc974b1d8f7c8de5421cb2dfbc7e3d9a400662188398 [2022-11-16 12:40:48,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:40:48,936 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:40:48,939 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:40:48,940 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:40:48,941 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:40:48,943 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a74fd93-7162-4244-bb2d-71255fc742eb/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread-atomic/peterson.i [2022-11-16 12:40:49,024 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a74fd93-7162-4244-bb2d-71255fc742eb/bin/uautomizer-tPACEb0tL8/data/ac7bf0d78/4946ceb09f6a45afb420c4babbf0c1b2/FLAG36f396f66 [2022-11-16 12:40:49,650 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:40:49,651 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a74fd93-7162-4244-bb2d-71255fc742eb/sv-benchmarks/c/pthread-atomic/peterson.i [2022-11-16 12:40:49,665 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a74fd93-7162-4244-bb2d-71255fc742eb/bin/uautomizer-tPACEb0tL8/data/ac7bf0d78/4946ceb09f6a45afb420c4babbf0c1b2/FLAG36f396f66 [2022-11-16 12:40:49,935 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a74fd93-7162-4244-bb2d-71255fc742eb/bin/uautomizer-tPACEb0tL8/data/ac7bf0d78/4946ceb09f6a45afb420c4babbf0c1b2 [2022-11-16 12:40:49,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:40:49,939 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:40:49,944 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:40:49,944 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:40:49,948 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:40:49,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:40:49" (1/1) ... [2022-11-16 12:40:49,950 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@247ce246 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:49, skipping insertion in model container [2022-11-16 12:40:49,950 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:40:49" (1/1) ... [2022-11-16 12:40:49,958 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:40:49,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:40:50,214 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-16 12:40:50,357 WARN L229 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_6a74fd93-7162-4244-bb2d-71255fc742eb/sv-benchmarks/c/pthread-atomic/peterson.i[30997,31010] [2022-11-16 12:40:50,364 WARN L229 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_6a74fd93-7162-4244-bb2d-71255fc742eb/sv-benchmarks/c/pthread-atomic/peterson.i[31682,31695] [2022-11-16 12:40:50,371 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:40:50,380 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:40:50,397 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-16 12:40:50,419 WARN L229 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_6a74fd93-7162-4244-bb2d-71255fc742eb/sv-benchmarks/c/pthread-atomic/peterson.i[30997,31010] [2022-11-16 12:40:50,421 WARN L229 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_6a74fd93-7162-4244-bb2d-71255fc742eb/sv-benchmarks/c/pthread-atomic/peterson.i[31682,31695] [2022-11-16 12:40:50,425 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:40:50,456 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:40:50,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:50 WrapperNode [2022-11-16 12:40:50,456 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:40:50,458 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:40:50,458 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:40:50,458 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:40:50,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:50" (1/1) ... [2022-11-16 12:40:50,480 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:50" (1/1) ... [2022-11-16 12:40:50,500 INFO L138 Inliner]: procedures = 171, calls = 47, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 43 [2022-11-16 12:40:50,501 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:40:50,502 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:40:50,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:40:50,502 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:40:50,512 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:50" (1/1) ... [2022-11-16 12:40:50,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:50" (1/1) ... [2022-11-16 12:40:50,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:50" (1/1) ... [2022-11-16 12:40:50,516 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:50" (1/1) ... [2022-11-16 12:40:50,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:50" (1/1) ... [2022-11-16 12:40:50,526 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:50" (1/1) ... [2022-11-16 12:40:50,527 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:50" (1/1) ... [2022-11-16 12:40:50,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:50" (1/1) ... [2022-11-16 12:40:50,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:40:50,542 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:40:50,542 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:40:50,542 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:40:50,543 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:50" (1/1) ... [2022-11-16 12:40:50,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:40:50,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a74fd93-7162-4244-bb2d-71255fc742eb/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:40:50,581 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a74fd93-7162-4244-bb2d-71255fc742eb/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:40:50,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a74fd93-7162-4244-bb2d-71255fc742eb/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:40:50,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:40:50,633 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-11-16 12:40:50,633 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-11-16 12:40:50,634 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-16 12:40:50,634 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-16 12:40:50,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:40:50,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 12:40:50,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:40:50,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:40:50,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:40:50,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:40:50,635 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 12:40:50,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:40:50,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:40:50,637 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:40:50,827 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:40:50,829 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:40:51,003 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:40:51,016 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:40:51,016 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 12:40:51,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:40:51 BoogieIcfgContainer [2022-11-16 12:40:51,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:40:51,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:40:51,023 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:40:51,027 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:40:51,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:40:49" (1/3) ... [2022-11-16 12:40:51,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c5e14ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:40:51, skipping insertion in model container [2022-11-16 12:40:51,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:50" (2/3) ... [2022-11-16 12:40:51,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c5e14ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:40:51, skipping insertion in model container [2022-11-16 12:40:51,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:40:51" (3/3) ... [2022-11-16 12:40:51,030 INFO L112 eAbstractionObserver]: Analyzing ICFG peterson.i [2022-11-16 12:40:51,039 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:40:51,054 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:40:51,054 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 12:40:51,055 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:40:51,129 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 12:40:51,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 82 transitions, 180 flow [2022-11-16 12:40:51,216 INFO L130 PetriNetUnfolder]: 6/80 cut-off events. [2022-11-16 12:40:51,216 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 12:40:51,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 80 events. 6/80 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 76 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2022-11-16 12:40:51,222 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 82 transitions, 180 flow [2022-11-16 12:40:51,227 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 70 transitions, 149 flow [2022-11-16 12:40:51,238 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:40:51,246 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;@352a3548, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:40:51,246 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-16 12:40:51,264 INFO L130 PetriNetUnfolder]: 3/46 cut-off events. [2022-11-16 12:40:51,264 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:40:51,265 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:40:51,265 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:40:51,266 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-16 12:40:51,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:51,272 INFO L85 PathProgramCache]: Analyzing trace with hash 913558814, now seen corresponding path program 1 times [2022-11-16 12:40:51,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:51,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505720392] [2022-11-16 12:40:51,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:51,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:51,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:51,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:40:51,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:51,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505720392] [2022-11-16 12:40:51,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505720392] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:40:51,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:40:51,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:40:51,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084120220] [2022-11-16 12:40:51,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:40:51,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:40:51,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:51,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:40:51,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:40:51,657 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 82 [2022-11-16 12:40:51,663 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 70 transitions, 149 flow. Second operand has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 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) [2022-11-16 12:40:51,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:40:51,668 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 82 [2022-11-16 12:40:51,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:40:51,729 INFO L130 PetriNetUnfolder]: 2/66 cut-off events. [2022-11-16 12:40:51,729 INFO L131 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2022-11-16 12:40:51,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 66 events. 2/66 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 76 event pairs, 0 based on Foata normal form. 7/69 useless extension candidates. Maximal degree in co-relation 46. Up to 4 conditions per place. [2022-11-16 12:40:51,732 INFO L137 encePairwiseOnDemand]: 78/82 looper letters, 3 selfloop transitions, 0 changer transitions 0/66 dead transitions. [2022-11-16 12:40:51,732 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 66 transitions, 147 flow [2022-11-16 12:40:51,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:40:51,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 12:40:51,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 155 transitions. [2022-11-16 12:40:51,750 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9451219512195121 [2022-11-16 12:40:51,751 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 155 transitions. [2022-11-16 12:40:51,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 155 transitions. [2022-11-16 12:40:51,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:40:51,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 155 transitions. [2022-11-16 12:40:51,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 77.5) internal successors, (155), 2 states have internal predecessors, (155), 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) [2022-11-16 12:40:51,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 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) [2022-11-16 12:40:51,770 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 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) [2022-11-16 12:40:51,772 INFO L175 Difference]: Start difference. First operand has 71 places, 70 transitions, 149 flow. Second operand 2 states and 155 transitions. [2022-11-16 12:40:51,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 66 transitions, 147 flow [2022-11-16 12:40:51,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 66 transitions, 142 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:40:51,789 INFO L231 Difference]: Finished difference. Result has 69 places, 66 transitions, 136 flow [2022-11-16 12:40:51,791 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=136, PETRI_PLACES=69, PETRI_TRANSITIONS=66} [2022-11-16 12:40:51,798 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, -2 predicate places. [2022-11-16 12:40:51,798 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 66 transitions, 136 flow [2022-11-16 12:40:51,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 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) [2022-11-16 12:40:51,799 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:40:51,800 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:40:51,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:40:51,800 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-16 12:40:51,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:51,803 INFO L85 PathProgramCache]: Analyzing trace with hash 913588605, now seen corresponding path program 1 times [2022-11-16 12:40:51,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:51,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770793579] [2022-11-16 12:40:51,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:51,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:51,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:52,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:40:52,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:52,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770793579] [2022-11-16 12:40:52,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770793579] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:40:52,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:40:52,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:40:52,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890408188] [2022-11-16 12:40:52,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:40:52,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:40:52,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:52,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:40:52,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:40:52,047 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 82 [2022-11-16 12:40:52,051 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 66 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 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) [2022-11-16 12:40:52,051 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:40:52,052 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 82 [2022-11-16 12:40:52,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:40:52,145 INFO L130 PetriNetUnfolder]: 16/145 cut-off events. [2022-11-16 12:40:52,145 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-16 12:40:52,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 145 events. 16/145 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 477 event pairs, 4 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 197. Up to 24 conditions per place. [2022-11-16 12:40:52,147 INFO L137 encePairwiseOnDemand]: 77/82 looper letters, 11 selfloop transitions, 3 changer transitions 0/70 dead transitions. [2022-11-16 12:40:52,148 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 70 transitions, 173 flow [2022-11-16 12:40:52,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:40:52,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:40:52,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 217 transitions. [2022-11-16 12:40:52,150 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8821138211382114 [2022-11-16 12:40:52,150 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 217 transitions. [2022-11-16 12:40:52,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 217 transitions. [2022-11-16 12:40:52,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:40:52,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 217 transitions. [2022-11-16 12:40:52,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:52,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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) [2022-11-16 12:40:52,154 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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) [2022-11-16 12:40:52,154 INFO L175 Difference]: Start difference. First operand has 69 places, 66 transitions, 136 flow. Second operand 3 states and 217 transitions. [2022-11-16 12:40:52,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 70 transitions, 173 flow [2022-11-16 12:40:52,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 70 transitions, 173 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:40:52,157 INFO L231 Difference]: Finished difference. Result has 73 places, 67 transitions, 156 flow [2022-11-16 12:40:52,157 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=73, PETRI_TRANSITIONS=67} [2022-11-16 12:40:52,158 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 2 predicate places. [2022-11-16 12:40:52,158 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 67 transitions, 156 flow [2022-11-16 12:40:52,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 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) [2022-11-16 12:40:52,159 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:40:52,159 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:40:52,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:40:52,160 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-16 12:40:52,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:52,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1791839526, now seen corresponding path program 1 times [2022-11-16 12:40:52,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:52,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875395695] [2022-11-16 12:40:52,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:52,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:52,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:52,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:40:52,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:52,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875395695] [2022-11-16 12:40:52,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875395695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:40:52,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:40:52,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:40:52,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119823575] [2022-11-16 12:40:52,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:40:52,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:40:52,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:52,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:40:52,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:40:52,300 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 82 [2022-11-16 12:40:52,300 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:52,300 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:40:52,300 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 82 [2022-11-16 12:40:52,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:40:52,381 INFO L130 PetriNetUnfolder]: 10/127 cut-off events. [2022-11-16 12:40:52,381 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2022-11-16 12:40:52,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 127 events. 10/127 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 369 event pairs, 5 based on Foata normal form. 7/129 useless extension candidates. Maximal degree in co-relation 191. Up to 22 conditions per place. [2022-11-16 12:40:52,383 INFO L137 encePairwiseOnDemand]: 78/82 looper letters, 9 selfloop transitions, 2 changer transitions 1/68 dead transitions. [2022-11-16 12:40:52,383 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 68 transitions, 183 flow [2022-11-16 12:40:52,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:40:52,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:40:52,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 215 transitions. [2022-11-16 12:40:52,385 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8739837398373984 [2022-11-16 12:40:52,385 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 215 transitions. [2022-11-16 12:40:52,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 215 transitions. [2022-11-16 12:40:52,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:40:52,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 215 transitions. [2022-11-16 12:40:52,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 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) [2022-11-16 12:40:52,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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) [2022-11-16 12:40:52,389 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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) [2022-11-16 12:40:52,389 INFO L175 Difference]: Start difference. First operand has 73 places, 67 transitions, 156 flow. Second operand 3 states and 215 transitions. [2022-11-16 12:40:52,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 68 transitions, 183 flow [2022-11-16 12:40:52,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 68 transitions, 177 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:40:52,392 INFO L231 Difference]: Finished difference. Result has 74 places, 67 transitions, 160 flow [2022-11-16 12:40:52,392 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=74, PETRI_TRANSITIONS=67} [2022-11-16 12:40:52,393 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 3 predicate places. [2022-11-16 12:40:52,393 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 67 transitions, 160 flow [2022-11-16 12:40:52,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:52,393 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:40:52,394 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:40:52,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:40:52,394 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-16 12:40:52,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:52,395 INFO L85 PathProgramCache]: Analyzing trace with hash -557335110, now seen corresponding path program 1 times [2022-11-16 12:40:52,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:52,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892732672] [2022-11-16 12:40:52,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:52,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:52,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:40:52,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:52,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892732672] [2022-11-16 12:40:52,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892732672] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:40:52,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:40:52,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:40:52,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108703132] [2022-11-16 12:40:52,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:40:52,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:40:52,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:52,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:40:52,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:40:52,565 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 82 [2022-11-16 12:40:52,566 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 67 transitions, 160 flow. Second operand has 6 states, 6 states have (on average 61.833333333333336) internal successors, (371), 6 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:52,566 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:40:52,566 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 82 [2022-11-16 12:40:52,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:40:52,771 INFO L130 PetriNetUnfolder]: 83/326 cut-off events. [2022-11-16 12:40:52,771 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-11-16 12:40:52,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 555 conditions, 326 events. 83/326 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1546 event pairs, 9 based on Foata normal form. 0/307 useless extension candidates. Maximal degree in co-relation 549. Up to 48 conditions per place. [2022-11-16 12:40:52,774 INFO L137 encePairwiseOnDemand]: 72/82 looper letters, 26 selfloop transitions, 13 changer transitions 19/108 dead transitions. [2022-11-16 12:40:52,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 108 transitions, 363 flow [2022-11-16 12:40:52,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:40:52,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 12:40:52,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 662 transitions. [2022-11-16 12:40:52,777 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8073170731707318 [2022-11-16 12:40:52,778 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 662 transitions. [2022-11-16 12:40:52,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 662 transitions. [2022-11-16 12:40:52,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:40:52,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 662 transitions. [2022-11-16 12:40:52,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 66.2) internal successors, (662), 10 states have internal predecessors, (662), 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) [2022-11-16 12:40:52,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 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) [2022-11-16 12:40:52,784 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 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) [2022-11-16 12:40:52,784 INFO L175 Difference]: Start difference. First operand has 74 places, 67 transitions, 160 flow. Second operand 10 states and 662 transitions. [2022-11-16 12:40:52,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 108 transitions, 363 flow [2022-11-16 12:40:52,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 108 transitions, 361 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:40:52,788 INFO L231 Difference]: Finished difference. Result has 91 places, 79 transitions, 266 flow [2022-11-16 12:40:52,789 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=266, PETRI_PLACES=91, PETRI_TRANSITIONS=79} [2022-11-16 12:40:52,790 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 20 predicate places. [2022-11-16 12:40:52,790 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 79 transitions, 266 flow [2022-11-16 12:40:52,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 61.833333333333336) internal successors, (371), 6 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:52,790 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:40:52,790 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:40:52,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:40:52,791 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-16 12:40:52,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:52,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1394871162, now seen corresponding path program 2 times [2022-11-16 12:40:52,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:52,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336106856] [2022-11-16 12:40:52,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:52,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:52,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:52,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:40:52,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:52,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336106856] [2022-11-16 12:40:52,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336106856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:40:52,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:40:52,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:40:52,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087797674] [2022-11-16 12:40:52,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:40:52,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:40:52,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:52,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:40:52,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:40:52,905 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 82 [2022-11-16 12:40:52,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 79 transitions, 266 flow. Second operand has 6 states, 6 states have (on average 61.833333333333336) internal successors, (371), 6 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:52,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:40:52,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 82 [2022-11-16 12:40:52,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:40:53,098 INFO L130 PetriNetUnfolder]: 93/308 cut-off events. [2022-11-16 12:40:53,099 INFO L131 PetriNetUnfolder]: For 207/224 co-relation queries the response was YES. [2022-11-16 12:40:53,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 798 conditions, 308 events. 93/308 cut-off events. For 207/224 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1327 event pairs, 8 based on Foata normal form. 7/306 useless extension candidates. Maximal degree in co-relation 784. Up to 55 conditions per place. [2022-11-16 12:40:53,101 INFO L137 encePairwiseOnDemand]: 72/82 looper letters, 0 selfloop transitions, 0 changer transitions 114/114 dead transitions. [2022-11-16 12:40:53,102 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 114 transitions, 523 flow [2022-11-16 12:40:53,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:40:53,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 12:40:53,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 656 transitions. [2022-11-16 12:40:53,104 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8 [2022-11-16 12:40:53,104 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 656 transitions. [2022-11-16 12:40:53,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 656 transitions. [2022-11-16 12:40:53,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:40:53,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 656 transitions. [2022-11-16 12:40:53,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 65.6) internal successors, (656), 10 states have internal predecessors, (656), 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) [2022-11-16 12:40:53,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 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) [2022-11-16 12:40:53,109 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 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) [2022-11-16 12:40:53,109 INFO L175 Difference]: Start difference. First operand has 91 places, 79 transitions, 266 flow. Second operand 10 states and 656 transitions. [2022-11-16 12:40:53,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 114 transitions, 523 flow [2022-11-16 12:40:53,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 114 transitions, 493 flow, removed 14 selfloop flow, removed 3 redundant places. [2022-11-16 12:40:53,115 INFO L231 Difference]: Finished difference. Result has 91 places, 0 transitions, 0 flow [2022-11-16 12:40:53,116 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=91, PETRI_TRANSITIONS=0} [2022-11-16 12:40:53,116 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 20 predicate places. [2022-11-16 12:40:53,117 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 0 transitions, 0 flow [2022-11-16 12:40:53,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 61.833333333333336) internal successors, (371), 6 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:53,120 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-11-16 12:40:53,120 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-11-16 12:40:53,120 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-11-16 12:40:53,121 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2022-11-16 12:40:53,121 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-11-16 12:40:53,121 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-11-16 12:40:53,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:40:53,122 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2022-11-16 12:40:53,127 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 12:40:53,128 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:40:53,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:40:53 BasicIcfg [2022-11-16 12:40:53,133 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:40:53,134 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:40:53,134 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:40:53,134 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:40:53,135 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:40:51" (3/4) ... [2022-11-16 12:40:53,137 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 12:40:53,143 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2022-11-16 12:40:53,143 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2022-11-16 12:40:53,147 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-11-16 12:40:53,147 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-16 12:40:53,147 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 12:40:53,147 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 12:40:53,176 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a74fd93-7162-4244-bb2d-71255fc742eb/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 12:40:53,176 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:40:53,177 INFO L158 Benchmark]: Toolchain (without parser) took 3237.63ms. Allocated memory is still 134.2MB. Free memory was 99.2MB in the beginning and 45.2MB in the end (delta: 54.0MB). Peak memory consumption was 53.9MB. Max. memory is 16.1GB. [2022-11-16 12:40:53,177 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 86.0MB. Free memory was 57.5MB in the beginning and 57.4MB in the end (delta: 30.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:40:53,177 INFO L158 Benchmark]: CACSL2BoogieTranslator took 513.28ms. Allocated memory is still 134.2MB. Free memory was 98.8MB in the beginning and 100.6MB in the end (delta: -1.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 12:40:53,178 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.40ms. Allocated memory is still 134.2MB. Free memory was 100.6MB in the beginning and 98.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:40:53,178 INFO L158 Benchmark]: Boogie Preprocessor took 39.42ms. Allocated memory is still 134.2MB. Free memory was 98.6MB in the beginning and 97.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:40:53,178 INFO L158 Benchmark]: RCFGBuilder took 478.06ms. Allocated memory is still 134.2MB. Free memory was 97.0MB in the beginning and 84.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 12:40:53,179 INFO L158 Benchmark]: TraceAbstraction took 2110.77ms. Allocated memory is still 134.2MB. Free memory was 83.4MB in the beginning and 47.3MB in the end (delta: 36.1MB). Peak memory consumption was 37.6MB. Max. memory is 16.1GB. [2022-11-16 12:40:53,179 INFO L158 Benchmark]: Witness Printer took 41.95ms. Allocated memory is still 134.2MB. Free memory was 47.3MB in the beginning and 45.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:40:53,181 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 86.0MB. Free memory was 57.5MB in the beginning and 57.4MB in the end (delta: 30.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 513.28ms. Allocated memory is still 134.2MB. Free memory was 98.8MB in the beginning and 100.6MB in the end (delta: -1.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.40ms. Allocated memory is still 134.2MB. Free memory was 100.6MB in the beginning and 98.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.42ms. Allocated memory is still 134.2MB. Free memory was 98.6MB in the beginning and 97.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 478.06ms. Allocated memory is still 134.2MB. Free memory was 97.0MB in the beginning and 84.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2110.77ms. Allocated memory is still 134.2MB. Free memory was 83.4MB in the beginning and 47.3MB in the end (delta: 36.1MB). Peak memory consumption was 37.6MB. Max. memory is 16.1GB. * Witness Printer took 41.95ms. Allocated memory is still 134.2MB. Free memory was 47.3MB in the beginning and 45.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 753]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 725]: 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 5 procedures, 111 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: 2.0s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 83 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 83 mSDsluCounter, 114 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 53 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 248 IncrementalHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 61 mSDtfsCounter, 248 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=266occurred in iteration=4, InterpolantAutomatonStates: 28, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 187 NumberOfCodeBlocks, 187 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 182 ConstructedInterpolants, 0 QuantifiedInterpolants, 262 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 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! [2022-11-16 12:40:53,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a74fd93-7162-4244-bb2d-71255fc742eb/bin/uautomizer-tPACEb0tL8/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