./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-nondet/nondet-loop-bound-variant-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 2329fc70 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_4cb9dfb0-e4ca-4505-8103-c53cd33be11d/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb9dfb0-e4ca-4505-8103-c53cd33be11d/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb9dfb0-e4ca-4505-8103-c53cd33be11d/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb9dfb0-e4ca-4505-8103-c53cd33be11d/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-nondet/nondet-loop-bound-variant-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb9dfb0-e4ca-4505-8103-c53cd33be11d/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb9dfb0-e4ca-4505-8103-c53cd33be11d/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dc1a8bd7c922f93873ec39bdce92396c491017d4a5984ae9a59a0e03f4bb08ec --- 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-2329fc7 [2022-12-13 14:04:29,544 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 14:04:29,545 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 14:04:29,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 14:04:29,563 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 14:04:29,564 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 14:04:29,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 14:04:29,566 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 14:04:29,568 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 14:04:29,568 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 14:04:29,569 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 14:04:29,570 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 14:04:29,571 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 14:04:29,572 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 14:04:29,573 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 14:04:29,574 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 14:04:29,574 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 14:04:29,575 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 14:04:29,577 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 14:04:29,578 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 14:04:29,580 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 14:04:29,581 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 14:04:29,582 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 14:04:29,583 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 14:04:29,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 14:04:29,586 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 14:04:29,586 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 14:04:29,587 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 14:04:29,588 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 14:04:29,589 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 14:04:29,589 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 14:04:29,589 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 14:04:29,590 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 14:04:29,591 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 14:04:29,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 14:04:29,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 14:04:29,592 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 14:04:29,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 14:04:29,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 14:04:29,594 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 14:04:29,594 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 14:04:29,595 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb9dfb0-e4ca-4505-8103-c53cd33be11d/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-12-13 14:04:29,615 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 14:04:29,636 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 14:04:29,636 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 14:04:29,637 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 14:04:29,637 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 14:04:29,638 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 14:04:29,638 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 14:04:29,639 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 14:04:29,639 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 14:04:29,639 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 14:04:29,639 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 14:04:29,639 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 14:04:29,640 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 14:04:29,640 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 14:04:29,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 14:04:29,640 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 14:04:29,640 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 14:04:29,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 14:04:29,641 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-13 14:04:29,641 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 14:04:29,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 14:04:29,641 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 14:04:29,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 14:04:29,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 14:04:29,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 14:04:29,642 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 14:04:29,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:04:29,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 14:04:29,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 14:04:29,643 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 14:04:29,643 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 14:04:29,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 14:04:29,644 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 14:04:29,644 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 14:04:29,644 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 14:04:29,644 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 14:04:29,644 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 14:04:29,645 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_4cb9dfb0-e4ca-4505-8103-c53cd33be11d/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb9dfb0-e4ca-4505-8103-c53cd33be11d/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc1a8bd7c922f93873ec39bdce92396c491017d4a5984ae9a59a0e03f4bb08ec [2022-12-13 14:04:29,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 14:04:29,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 14:04:29,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 14:04:29,851 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 14:04:29,851 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 14:04:29,853 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb9dfb0-e4ca-4505-8103-c53cd33be11d/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-nondet/nondet-loop-bound-variant-2.i [2022-12-13 14:04:32,389 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 14:04:32,537 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 14:04:32,537 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb9dfb0-e4ca-4505-8103-c53cd33be11d/sv-benchmarks/c/pthread-nondet/nondet-loop-bound-variant-2.i [2022-12-13 14:04:32,545 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb9dfb0-e4ca-4505-8103-c53cd33be11d/bin/uautomizer-uyxdKDjOR8/data/e12c0e207/6df6058da98447afb50fcfdb7da29492/FLAG3f7239973 [2022-12-13 14:04:32,555 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb9dfb0-e4ca-4505-8103-c53cd33be11d/bin/uautomizer-uyxdKDjOR8/data/e12c0e207/6df6058da98447afb50fcfdb7da29492 [2022-12-13 14:04:32,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 14:04:32,558 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 14:04:32,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 14:04:32,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 14:04:32,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 14:04:32,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:04:32" (1/1) ... [2022-12-13 14:04:32,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4054192b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:04:32, skipping insertion in model container [2022-12-13 14:04:32,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:04:32" (1/1) ... [2022-12-13 14:04:32,568 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 14:04:32,589 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 14:04:32,783 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_4cb9dfb0-e4ca-4505-8103-c53cd33be11d/sv-benchmarks/c/pthread-nondet/nondet-loop-bound-variant-2.i[30035,30048] [2022-12-13 14:04:32,800 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:04:32,811 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 14:04:32,841 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_4cb9dfb0-e4ca-4505-8103-c53cd33be11d/sv-benchmarks/c/pthread-nondet/nondet-loop-bound-variant-2.i[30035,30048] [2022-12-13 14:04:32,848 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:04:32,874 INFO L208 MainTranslator]: Completed translation [2022-12-13 14:04:32,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:04:32 WrapperNode [2022-12-13 14:04:32,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 14:04:32,875 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 14:04:32,875 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 14:04:32,875 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 14:04:32,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:04:32" (1/1) ... [2022-12-13 14:04:32,894 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:04:32" (1/1) ... [2022-12-13 14:04:32,914 INFO L138 Inliner]: procedures = 171, calls = 26, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 110 [2022-12-13 14:04:32,915 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 14:04:32,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 14:04:32,915 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 14:04:32,916 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 14:04:32,923 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:04:32" (1/1) ... [2022-12-13 14:04:32,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:04:32" (1/1) ... [2022-12-13 14:04:32,926 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:04:32" (1/1) ... [2022-12-13 14:04:32,926 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:04:32" (1/1) ... [2022-12-13 14:04:32,931 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:04:32" (1/1) ... [2022-12-13 14:04:32,934 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:04:32" (1/1) ... [2022-12-13 14:04:32,936 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:04:32" (1/1) ... [2022-12-13 14:04:32,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:04:32" (1/1) ... [2022-12-13 14:04:32,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 14:04:32,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 14:04:32,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 14:04:32,941 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 14:04:32,942 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:04:32" (1/1) ... [2022-12-13 14:04:32,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:04:32,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb9dfb0-e4ca-4505-8103-c53cd33be11d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:04:32,968 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb9dfb0-e4ca-4505-8103-c53cd33be11d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 14:04:32,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb9dfb0-e4ca-4505-8103-c53cd33be11d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 14:04:32,996 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-12-13 14:04:32,996 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-12-13 14:04:32,997 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-12-13 14:04:32,997 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-12-13 14:04:32,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 14:04:32,997 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 14:04:32,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 14:04:32,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 14:04:32,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 14:04:32,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 14:04:32,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 14:04:32,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 14:04:32,999 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 14:04:33,100 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 14:04:33,101 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 14:04:33,271 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 14:04:33,277 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 14:04:33,278 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 14:04:33,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:04:33 BoogieIcfgContainer [2022-12-13 14:04:33,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 14:04:33,281 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 14:04:33,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 14:04:33,284 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 14:04:33,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 02:04:32" (1/3) ... [2022-12-13 14:04:33,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45699f64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:04:33, skipping insertion in model container [2022-12-13 14:04:33,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:04:32" (2/3) ... [2022-12-13 14:04:33,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45699f64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:04:33, skipping insertion in model container [2022-12-13 14:04:33,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:04:33" (3/3) ... [2022-12-13 14:04:33,286 INFO L112 eAbstractionObserver]: Analyzing ICFG nondet-loop-bound-variant-2.i [2022-12-13 14:04:33,292 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 14:04:33,300 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 14:04:33,300 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-12-13 14:04:33,300 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 14:04:33,348 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 14:04:33,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 138 transitions, 286 flow [2022-12-13 14:04:33,416 INFO L130 PetriNetUnfolder]: 7/154 cut-off events. [2022-12-13 14:04:33,416 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 14:04:33,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 154 events. 7/154 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 190 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 101. Up to 4 conditions per place. [2022-12-13 14:04:33,421 INFO L82 GeneralOperation]: Start removeDead. Operand has 138 places, 138 transitions, 286 flow [2022-12-13 14:04:33,424 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 137 places, 137 transitions, 282 flow [2022-12-13 14:04:33,427 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 14:04:33,435 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 137 transitions, 282 flow [2022-12-13 14:04:33,438 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 137 transitions, 282 flow [2022-12-13 14:04:33,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 137 transitions, 282 flow [2022-12-13 14:04:33,463 INFO L130 PetriNetUnfolder]: 7/154 cut-off events. [2022-12-13 14:04:33,463 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 14:04:33,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 154 events. 7/154 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 190 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 101. Up to 4 conditions per place. [2022-12-13 14:04:33,465 INFO L119 LiptonReduction]: Number of co-enabled transitions 3398 [2022-12-13 14:04:36,951 INFO L134 LiptonReduction]: Checked pairs total: 9975 [2022-12-13 14:04:36,951 INFO L136 LiptonReduction]: Total number of compositions: 140 [2022-12-13 14:04:36,961 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 14:04:36,966 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;@4e753e9b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 14:04:36,966 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-12-13 14:04:36,967 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 14:04:36,967 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 14:04:36,967 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:04:36,967 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 14:04:36,968 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2022-12-13 14:04:36,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:04:36,971 INFO L85 PathProgramCache]: Analyzing trace with hash 522, now seen corresponding path program 1 times [2022-12-13 14:04:36,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:04:36,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123944] [2022-12-13 14:04:36,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:04:36,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:04:37,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:04:37,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:04:37,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:04:37,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123944] [2022-12-13 14:04:37,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123944] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:04:37,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:04:37,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 14:04:37,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669108106] [2022-12-13 14:04:37,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:04:37,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 14:04:37,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:04:37,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 14:04:37,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 14:04:37,078 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 278 [2022-12-13 14:04:37,079 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 34 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 131.5) internal successors, (263), 2 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:04:37,079 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:04:37,079 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 278 [2022-12-13 14:04:37,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:04:37,132 INFO L130 PetriNetUnfolder]: 111/278 cut-off events. [2022-12-13 14:04:37,132 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 14:04:37,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 278 events. 111/278 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1441 event pairs, 99 based on Foata normal form. 49/276 useless extension candidates. Maximal degree in co-relation 485. Up to 197 conditions per place. [2022-12-13 14:04:37,135 INFO L137 encePairwiseOnDemand]: 272/278 looper letters, 15 selfloop transitions, 0 changer transitions 0/28 dead transitions. [2022-12-13 14:04:37,135 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 94 flow [2022-12-13 14:04:37,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 14:04:37,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 14:04:37,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 283 transitions. [2022-12-13 14:04:37,145 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5089928057553957 [2022-12-13 14:04:37,146 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 283 transitions. [2022-12-13 14:04:37,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 283 transitions. [2022-12-13 14:04:37,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:04:37,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 283 transitions. [2022-12-13 14:04:37,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 141.5) internal successors, (283), 2 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:04:37,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 278.0) internal successors, (834), 3 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:04:37,155 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 278.0) internal successors, (834), 3 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:04:37,156 INFO L175 Difference]: Start difference. First operand has 37 places, 34 transitions, 76 flow. Second operand 2 states and 283 transitions. [2022-12-13 14:04:37,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 94 flow [2022-12-13 14:04:37,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 93 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 14:04:37,160 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 63 flow [2022-12-13 14:04:37,161 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=63, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2022-12-13 14:04:37,164 INFO L288 CegarLoopForPetriNet]: 37 programPoint places, -4 predicate places. [2022-12-13 14:04:37,164 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 63 flow [2022-12-13 14:04:37,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 131.5) internal successors, (263), 2 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:04:37,165 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:04:37,165 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 14:04:37,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 14:04:37,165 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2022-12-13 14:04:37,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:04:37,166 INFO L85 PathProgramCache]: Analyzing trace with hash 16020827, now seen corresponding path program 1 times [2022-12-13 14:04:37,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:04:37,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130493819] [2022-12-13 14:04:37,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:04:37,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:04:37,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:04:37,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:04:37,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:04:37,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130493819] [2022-12-13 14:04:37,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130493819] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:04:37,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:04:37,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:04:37,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422884648] [2022-12-13 14:04:37,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:04:37,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:04:37,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:04:37,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:04:37,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:04:37,257 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 278 [2022-12-13 14:04:37,258 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 63 flow. Second operand has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:04:37,258 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:04:37,258 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 278 [2022-12-13 14:04:37,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:04:37,322 INFO L130 PetriNetUnfolder]: 240/496 cut-off events. [2022-12-13 14:04:37,322 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 14:04:37,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 942 conditions, 496 events. 240/496 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2625 event pairs, 141 based on Foata normal form. 0/419 useless extension candidates. Maximal degree in co-relation 938. Up to 330 conditions per place. [2022-12-13 14:04:37,325 INFO L137 encePairwiseOnDemand]: 272/278 looper letters, 25 selfloop transitions, 4 changer transitions 0/37 dead transitions. [2022-12-13 14:04:37,325 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 37 transitions, 142 flow [2022-12-13 14:04:37,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:04:37,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:04:37,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 400 transitions. [2022-12-13 14:04:37,327 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47961630695443647 [2022-12-13 14:04:37,328 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 400 transitions. [2022-12-13 14:04:37,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 400 transitions. [2022-12-13 14:04:37,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:04:37,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 400 transitions. [2022-12-13 14:04:37,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:04:37,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:04:37,331 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:04:37,331 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 63 flow. Second operand 3 states and 400 transitions. [2022-12-13 14:04:37,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 37 transitions, 142 flow [2022-12-13 14:04:37,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 37 transitions, 142 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 14:04:37,332 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 91 flow [2022-12-13 14:04:37,332 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2022-12-13 14:04:37,333 INFO L288 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2022-12-13 14:04:37,333 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 91 flow [2022-12-13 14:04:37,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:04:37,333 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:04:37,333 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 14:04:37,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 14:04:37,334 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2022-12-13 14:04:37,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:04:37,334 INFO L85 PathProgramCache]: Analyzing trace with hash 496712068, now seen corresponding path program 1 times [2022-12-13 14:04:37,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:04:37,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304780769] [2022-12-13 14:04:37,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:04:37,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:04:37,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:04:37,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:04:37,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:04:37,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304780769] [2022-12-13 14:04:37,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304780769] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:04:37,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:04:37,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:04:37,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923654755] [2022-12-13 14:04:37,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:04:37,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:04:37,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:04:37,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:04:37,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:04:37,395 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 278 [2022-12-13 14:04:37,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:04:37,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:04:37,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 278 [2022-12-13 14:04:37,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:04:37,453 INFO L130 PetriNetUnfolder]: 326/643 cut-off events. [2022-12-13 14:04:37,453 INFO L131 PetriNetUnfolder]: For 135/135 co-relation queries the response was YES. [2022-12-13 14:04:37,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1399 conditions, 643 events. 326/643 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3068 event pairs, 271 based on Foata normal form. 0/562 useless extension candidates. Maximal degree in co-relation 1393. Up to 547 conditions per place. [2022-12-13 14:04:37,456 INFO L137 encePairwiseOnDemand]: 274/278 looper letters, 19 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2022-12-13 14:04:37,456 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 27 transitions, 125 flow [2022-12-13 14:04:37,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:04:37,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:04:37,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 366 transitions. [2022-12-13 14:04:37,458 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43884892086330934 [2022-12-13 14:04:37,458 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 366 transitions. [2022-12-13 14:04:37,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 366 transitions. [2022-12-13 14:04:37,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:04:37,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 366 transitions. [2022-12-13 14:04:37,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:04:37,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:04:37,461 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:04:37,461 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 91 flow. Second operand 3 states and 366 transitions. [2022-12-13 14:04:37,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 27 transitions, 125 flow [2022-12-13 14:04:37,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 27 transitions, 117 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 14:04:37,463 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 79 flow [2022-12-13 14:04:37,463 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=79, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2022-12-13 14:04:37,464 INFO L288 CegarLoopForPetriNet]: 37 programPoint places, -4 predicate places. [2022-12-13 14:04:37,464 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 79 flow [2022-12-13 14:04:37,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:04:37,464 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:04:37,464 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 14:04:37,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 14:04:37,465 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2022-12-13 14:04:37,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:04:37,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1093808717, now seen corresponding path program 1 times [2022-12-13 14:04:37,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:04:37,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883035802] [2022-12-13 14:04:37,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:04:37,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:04:37,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 14:04:37,487 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 14:04:37,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 14:04:37,518 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 14:04:37,519 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 14:04:37,519 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-12-13 14:04:37,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2022-12-13 14:04:37,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2022-12-13 14:04:37,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2022-12-13 14:04:37,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2022-12-13 14:04:37,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2022-12-13 14:04:37,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2022-12-13 14:04:37,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2022-12-13 14:04:37,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2022-12-13 14:04:37,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2022-12-13 14:04:37,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2022-12-13 14:04:37,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 17 remaining) [2022-12-13 14:04:37,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2022-12-13 14:04:37,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2022-12-13 14:04:37,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2022-12-13 14:04:37,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2022-12-13 14:04:37,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2022-12-13 14:04:37,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 14:04:37,523 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-12-13 14:04:37,525 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 14:04:37,525 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 14:04:37,542 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 14:04:37,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 189 places, 188 transitions, 400 flow [2022-12-13 14:04:37,561 INFO L130 PetriNetUnfolder]: 10/208 cut-off events. [2022-12-13 14:04:37,561 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 14:04:37,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 208 events. 10/208 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 361 event pairs, 0 based on Foata normal form. 0/180 useless extension candidates. Maximal degree in co-relation 217. Up to 6 conditions per place. [2022-12-13 14:04:37,562 INFO L82 GeneralOperation]: Start removeDead. Operand has 189 places, 188 transitions, 400 flow [2022-12-13 14:04:37,563 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 169 transitions, 353 flow [2022-12-13 14:04:37,563 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 14:04:37,563 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 169 places, 169 transitions, 353 flow [2022-12-13 14:04:37,564 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 169 places, 169 transitions, 353 flow [2022-12-13 14:04:37,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 169 transitions, 353 flow [2022-12-13 14:04:37,580 INFO L130 PetriNetUnfolder]: 10/208 cut-off events. [2022-12-13 14:04:37,580 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 14:04:37,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 208 events. 10/208 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 360 event pairs, 0 based on Foata normal form. 0/180 useless extension candidates. Maximal degree in co-relation 157. Up to 6 conditions per place. [2022-12-13 14:04:37,584 INFO L119 LiptonReduction]: Number of co-enabled transitions 7896 [2022-12-13 14:04:40,660 INFO L134 LiptonReduction]: Checked pairs total: 33316 [2022-12-13 14:04:40,660 INFO L136 LiptonReduction]: Total number of compositions: 160 [2022-12-13 14:04:40,662 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 14:04:40,662 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;@4e753e9b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 14:04:40,662 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-12-13 14:04:40,663 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 14:04:40,663 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 14:04:40,663 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:04:40,663 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 14:04:40,663 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2022-12-13 14:04:40,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:04:40,664 INFO L85 PathProgramCache]: Analyzing trace with hash 917, now seen corresponding path program 1 times [2022-12-13 14:04:40,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:04:40,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253093347] [2022-12-13 14:04:40,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:04:40,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:04:40,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:04:40,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:04:40,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:04:40,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253093347] [2022-12-13 14:04:40,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253093347] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:04:40,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:04:40,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 14:04:40,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306565818] [2022-12-13 14:04:40,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:04:40,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 14:04:40,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:04:40,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 14:04:40,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 14:04:40,672 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 348 [2022-12-13 14:04:40,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 55 transitions, 125 flow. Second operand has 2 states, 2 states have (on average 176.5) internal successors, (353), 2 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:04:40,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:04:40,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 348 [2022-12-13 14:04:40,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:04:40,924 INFO L130 PetriNetUnfolder]: 1889/3829 cut-off events. [2022-12-13 14:04:40,924 INFO L131 PetriNetUnfolder]: For 99/99 co-relation queries the response was YES. [2022-12-13 14:04:40,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6658 conditions, 3829 events. 1889/3829 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 29610 event pairs, 1665 based on Foata normal form. 399/3741 useless extension candidates. Maximal degree in co-relation 6647. Up to 2691 conditions per place. [2022-12-13 14:04:40,943 INFO L137 encePairwiseOnDemand]: 342/348 looper letters, 24 selfloop transitions, 0 changer transitions 0/49 dead transitions. [2022-12-13 14:04:40,943 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 49 transitions, 161 flow [2022-12-13 14:04:40,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 14:04:40,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 14:04:40,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 382 transitions. [2022-12-13 14:04:40,945 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5488505747126436 [2022-12-13 14:04:40,945 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 382 transitions. [2022-12-13 14:04:40,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 382 transitions. [2022-12-13 14:04:40,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:04:40,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 382 transitions. [2022-12-13 14:04:40,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 191.0) internal successors, (382), 2 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:04:40,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 348.0) internal successors, (1044), 3 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:04:40,950 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 348.0) internal successors, (1044), 3 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:04:40,950 INFO L175 Difference]: Start difference. First operand has 59 places, 55 transitions, 125 flow. Second operand 2 states and 382 transitions. [2022-12-13 14:04:40,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 49 transitions, 161 flow [2022-12-13 14:04:40,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 49 transitions, 158 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 14:04:40,952 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 110 flow [2022-12-13 14:04:40,953 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=348, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=110, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2022-12-13 14:04:40,954 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, -4 predicate places. [2022-12-13 14:04:40,954 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 110 flow [2022-12-13 14:04:40,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 176.5) internal successors, (353), 2 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:04:40,954 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:04:40,955 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 14:04:40,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 14:04:40,955 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2022-12-13 14:04:40,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:04:40,955 INFO L85 PathProgramCache]: Analyzing trace with hash 28191958, now seen corresponding path program 1 times [2022-12-13 14:04:40,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:04:40,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341575873] [2022-12-13 14:04:40,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:04:40,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:04:40,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:04:40,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:04:40,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:04:40,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341575873] [2022-12-13 14:04:40,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341575873] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:04:40,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:04:40,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:04:40,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515040108] [2022-12-13 14:04:40,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:04:40,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:04:40,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:04:40,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:04:40,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:04:41,017 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 348 [2022-12-13 14:04:41,018 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:04:41,018 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:04:41,018 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 348 [2022-12-13 14:04:41,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:04:41,851 INFO L130 PetriNetUnfolder]: 7541/12559 cut-off events. [2022-12-13 14:04:41,852 INFO L131 PetriNetUnfolder]: For 185/185 co-relation queries the response was YES. [2022-12-13 14:04:41,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23580 conditions, 12559 events. 7541/12559 cut-off events. For 185/185 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 97687 event pairs, 2891 based on Foata normal form. 0/10945 useless extension candidates. Maximal degree in co-relation 23575. Up to 6854 conditions per place. [2022-12-13 14:04:41,909 INFO L137 encePairwiseOnDemand]: 337/348 looper letters, 53 selfloop transitions, 8 changer transitions 0/77 dead transitions. [2022-12-13 14:04:41,909 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 77 transitions, 296 flow [2022-12-13 14:04:41,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:04:41,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:04:41,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 547 transitions. [2022-12-13 14:04:41,911 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5239463601532567 [2022-12-13 14:04:41,911 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 547 transitions. [2022-12-13 14:04:41,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 547 transitions. [2022-12-13 14:04:41,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:04:41,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 547 transitions. [2022-12-13 14:04:41,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.33333333333334) internal successors, (547), 3 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:04:41,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 348.0) internal successors, (1392), 4 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:04:41,915 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 348.0) internal successors, (1392), 4 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:04:41,915 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 110 flow. Second operand 3 states and 547 transitions. [2022-12-13 14:04:41,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 77 transitions, 296 flow [2022-12-13 14:04:41,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 77 transitions, 296 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 14:04:41,916 INFO L231 Difference]: Finished difference. Result has 59 places, 57 transitions, 180 flow [2022-12-13 14:04:41,917 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=348, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=59, PETRI_TRANSITIONS=57} [2022-12-13 14:04:41,917 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, 0 predicate places. [2022-12-13 14:04:41,917 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 57 transitions, 180 flow [2022-12-13 14:04:41,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:04:41,918 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:04:41,918 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 14:04:41,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 14:04:41,918 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2022-12-13 14:04:41,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:04:41,918 INFO L85 PathProgramCache]: Analyzing trace with hash 874019813, now seen corresponding path program 1 times [2022-12-13 14:04:41,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:04:41,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120266242] [2022-12-13 14:04:41,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:04:41,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:04:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:04:41,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:04:41,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:04:41,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120266242] [2022-12-13 14:04:41,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120266242] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:04:41,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:04:41,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:04:41,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995661193] [2022-12-13 14:04:41,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:04:41,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:04:41,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:04:41,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:04:41,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:04:41,974 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 348 [2022-12-13 14:04:41,975 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 57 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:04:41,975 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:04:41,976 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 348 [2022-12-13 14:04:41,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:04:42,943 INFO L130 PetriNetUnfolder]: 11073/17641 cut-off events. [2022-12-13 14:04:42,943 INFO L131 PetriNetUnfolder]: For 2907/2907 co-relation queries the response was YES. [2022-12-13 14:04:42,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37406 conditions, 17641 events. 11073/17641 cut-off events. For 2907/2907 co-relation queries the response was YES. Maximal size of possible extension queue 735. Compared 124833 event pairs, 9113 based on Foata normal form. 0/15403 useless extension candidates. Maximal degree in co-relation 37399. Up to 15129 conditions per place. [2022-12-13 14:04:43,037 INFO L137 encePairwiseOnDemand]: 343/348 looper letters, 31 selfloop transitions, 1 changer transitions 0/53 dead transitions. [2022-12-13 14:04:43,037 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 53 transitions, 236 flow [2022-12-13 14:04:43,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:04:43,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:04:43,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2022-12-13 14:04:43,041 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47509578544061304 [2022-12-13 14:04:43,041 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 496 transitions. [2022-12-13 14:04:43,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 496 transitions. [2022-12-13 14:04:43,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:04:43,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 496 transitions. [2022-12-13 14:04:43,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:04:43,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 348.0) internal successors, (1392), 4 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:04:43,050 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 348.0) internal successors, (1392), 4 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:04:43,050 INFO L175 Difference]: Start difference. First operand has 59 places, 57 transitions, 180 flow. Second operand 3 states and 496 transitions. [2022-12-13 14:04:43,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 53 transitions, 236 flow [2022-12-13 14:04:43,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 53 transitions, 220 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 14:04:43,075 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 158 flow [2022-12-13 14:04:43,076 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=348, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=55, PETRI_TRANSITIONS=53} [2022-12-13 14:04:43,076 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, -4 predicate places. [2022-12-13 14:04:43,076 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 158 flow [2022-12-13 14:04:43,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:04:43,077 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:04:43,077 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:04:43,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 14:04:43,077 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr2Err2ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2022-12-13 14:04:43,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:04:43,077 INFO L85 PathProgramCache]: Analyzing trace with hash 26543499, now seen corresponding path program 1 times [2022-12-13 14:04:43,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:04:43,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522998478] [2022-12-13 14:04:43,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:04:43,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:04:43,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:04:43,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:04:43,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:04:43,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522998478] [2022-12-13 14:04:43,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522998478] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:04:43,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:04:43,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:04:43,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780672870] [2022-12-13 14:04:43,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:04:43,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:04:43,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:04:43,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:04:43,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:04:43,137 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 348 [2022-12-13 14:04:43,138 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 53 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:04:43,138 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:04:43,138 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 348 [2022-12-13 14:04:43,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:04:43,890 INFO L130 PetriNetUnfolder]: 6853/11499 cut-off events. [2022-12-13 14:04:43,890 INFO L131 PetriNetUnfolder]: For 1139/1139 co-relation queries the response was YES. [2022-12-13 14:04:43,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23784 conditions, 11499 events. 6853/11499 cut-off events. For 1139/1139 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 88992 event pairs, 4540 based on Foata normal form. 0/9928 useless extension candidates. Maximal degree in co-relation 23777. Up to 8730 conditions per place. [2022-12-13 14:04:43,937 INFO L137 encePairwiseOnDemand]: 342/348 looper letters, 43 selfloop transitions, 9 changer transitions 0/72 dead transitions. [2022-12-13 14:04:43,937 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 72 transitions, 317 flow [2022-12-13 14:04:43,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:04:43,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:04:43,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 540 transitions. [2022-12-13 14:04:43,939 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5172413793103449 [2022-12-13 14:04:43,939 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 540 transitions. [2022-12-13 14:04:43,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 540 transitions. [2022-12-13 14:04:43,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:04:43,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 540 transitions. [2022-12-13 14:04:43,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:04:43,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 348.0) internal successors, (1392), 4 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:04:43,943 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 348.0) internal successors, (1392), 4 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:04:43,943 INFO L175 Difference]: Start difference. First operand has 55 places, 53 transitions, 158 flow. Second operand 3 states and 540 transitions. [2022-12-13 14:04:43,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 72 transitions, 317 flow [2022-12-13 14:04:43,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 72 transitions, 316 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 14:04:43,946 INFO L231 Difference]: Finished difference. Result has 57 places, 60 transitions, 226 flow [2022-12-13 14:04:43,946 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=348, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=57, PETRI_TRANSITIONS=60} [2022-12-13 14:04:43,947 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, -2 predicate places. [2022-12-13 14:04:43,947 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 60 transitions, 226 flow [2022-12-13 14:04:43,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:04:43,948 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:04:43,948 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:04:43,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 14:04:43,948 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2022-12-13 14:04:43,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:04:43,949 INFO L85 PathProgramCache]: Analyzing trace with hash -85973581, now seen corresponding path program 1 times [2022-12-13 14:04:43,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:04:43,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035808794] [2022-12-13 14:04:43,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:04:43,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:04:43,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 14:04:43,975 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 14:04:43,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 14:04:44,003 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 14:04:44,003 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 14:04:44,004 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (21 of 22 remaining) [2022-12-13 14:04:44,004 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2022-12-13 14:04:44,004 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2022-12-13 14:04:44,004 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2022-12-13 14:04:44,005 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2022-12-13 14:04:44,005 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2022-12-13 14:04:44,005 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2022-12-13 14:04:44,005 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2022-12-13 14:04:44,006 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2022-12-13 14:04:44,006 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2022-12-13 14:04:44,006 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2022-12-13 14:04:44,006 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 22 remaining) [2022-12-13 14:04:44,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 22 remaining) [2022-12-13 14:04:44,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2022-12-13 14:04:44,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2022-12-13 14:04:44,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2022-12-13 14:04:44,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2022-12-13 14:04:44,008 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2022-12-13 14:04:44,008 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2022-12-13 14:04:44,008 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2022-12-13 14:04:44,008 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2022-12-13 14:04:44,009 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2022-12-13 14:04:44,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 14:04:44,009 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-12-13 14:04:44,013 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2022-12-13 14:04:44,014 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 14:04:44,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 02:04:44 BasicIcfg [2022-12-13 14:04:44,059 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 14:04:44,060 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 14:04:44,060 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 14:04:44,060 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 14:04:44,060 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:04:33" (3/4) ... [2022-12-13 14:04:44,063 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 14:04:44,063 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 14:04:44,064 INFO L158 Benchmark]: Toolchain (without parser) took 11506.18ms. Allocated memory was 178.3MB in the beginning and 729.8MB in the end (delta: 551.6MB). Free memory was 136.7MB in the beginning and 403.7MB in the end (delta: -266.9MB). Peak memory consumption was 287.3MB. Max. memory is 16.1GB. [2022-12-13 14:04:44,064 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 178.3MB. Free memory is still 147.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 14:04:44,065 INFO L158 Benchmark]: CACSL2BoogieTranslator took 316.03ms. Allocated memory is still 178.3MB. Free memory was 136.7MB in the beginning and 116.7MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-12-13 14:04:44,065 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.55ms. Allocated memory is still 178.3MB. Free memory was 116.7MB in the beginning and 114.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 14:04:44,065 INFO L158 Benchmark]: Boogie Preprocessor took 24.56ms. Allocated memory is still 178.3MB. Free memory was 114.8MB in the beginning and 113.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 14:04:44,066 INFO L158 Benchmark]: RCFGBuilder took 338.83ms. Allocated memory is still 178.3MB. Free memory was 113.2MB in the beginning and 97.4MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-13 14:04:44,066 INFO L158 Benchmark]: TraceAbstraction took 10777.94ms. Allocated memory was 178.3MB in the beginning and 729.8MB in the end (delta: 551.6MB). Free memory was 96.9MB in the beginning and 403.7MB in the end (delta: -306.7MB). Peak memory consumption was 247.5MB. Max. memory is 16.1GB. [2022-12-13 14:04:44,066 INFO L158 Benchmark]: Witness Printer took 3.91ms. Allocated memory is still 729.8MB. Free memory is still 403.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 14:04:44,068 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 178.3MB. Free memory is still 147.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 316.03ms. Allocated memory is still 178.3MB. Free memory was 136.7MB in the beginning and 116.7MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.55ms. Allocated memory is still 178.3MB. Free memory was 116.7MB in the beginning and 114.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.56ms. Allocated memory is still 178.3MB. Free memory was 114.8MB in the beginning and 113.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 338.83ms. Allocated memory is still 178.3MB. Free memory was 113.2MB in the beginning and 97.4MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 10777.94ms. Allocated memory was 178.3MB in the beginning and 729.8MB in the end (delta: 551.6MB). Free memory was 96.9MB in the beginning and 403.7MB in the end (delta: -306.7MB). Peak memory consumption was 247.5MB. Max. memory is 16.1GB. * Witness Printer took 3.91ms. Allocated memory is still 729.8MB. Free memory is still 403.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.5s, 137 PlacesBefore, 37 PlacesAfterwards, 137 TransitionsBefore, 34 TransitionsAfterwards, 3398 CoEnabledTransitionPairs, 7 FixpointIterations, 66 TrivialSequentialCompositions, 47 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 17 ConcurrentYvCompositions, 3 ChoiceCompositions, 140 TotalNumberOfCompositions, 9975 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5008, independent: 4705, independent conditional: 0, independent unconditional: 4705, dependent: 303, dependent conditional: 0, dependent unconditional: 303, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2081, independent: 2030, independent conditional: 0, independent unconditional: 2030, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5008, independent: 2675, independent conditional: 0, independent unconditional: 2675, dependent: 252, dependent conditional: 0, dependent unconditional: 252, unknown: 2081, unknown conditional: 0, unknown unconditional: 2081] , Statistics on independence cache: Total cache size (in pairs): 174, Positive cache size: 151, Positive conditional cache size: 0, Positive unconditional cache size: 151, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.1s, 169 PlacesBefore, 59 PlacesAfterwards, 169 TransitionsBefore, 55 TransitionsAfterwards, 7896 CoEnabledTransitionPairs, 8 FixpointIterations, 69 TrivialSequentialCompositions, 61 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 20 ConcurrentYvCompositions, 4 ChoiceCompositions, 160 TotalNumberOfCompositions, 33316 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 12868, independent: 12219, independent conditional: 0, independent unconditional: 12219, dependent: 649, dependent conditional: 0, dependent unconditional: 649, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4544, independent: 4471, independent conditional: 0, independent unconditional: 4471, dependent: 73, dependent conditional: 0, dependent unconditional: 73, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 12868, independent: 7748, independent conditional: 0, independent unconditional: 7748, dependent: 576, dependent conditional: 0, dependent unconditional: 576, unknown: 4544, unknown conditional: 0, unknown unconditional: 4544] , Statistics on independence cache: Total cache size (in pairs): 450, Positive cache size: 412, Positive conditional cache size: 0, Positive unconditional cache size: 412, Negative cache size: 38, Negative conditional cache size: 0, Negative unconditional cache size: 38, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - DataRaceFoundResult [Line: 694]: Data race detected Data race detected The following path leads to a data race: [L690] 0 volatile int x; [L691] 0 volatile int n; [L692] 0 pthread_mutex_t mut = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L708] 0 pthread_t t1, t2; [L709] 0 x = 0 [L710] 0 n = __VERIFIER_nondet_uint() [L711] EXPR 0 n >= (10/2) [L711] EXPR 0 n >= (10/2) && n < 10 [L711] EXPR 0 n < 10 [L711] EXPR 0 n >= (10/2) && n < 10 [L711] CALL 0 assume_abort_if_not(n >= (10/2) && n < 10) [L687] COND FALSE 0 !(!cond) [L711] RET 0 assume_abort_if_not(n >= (10/2) && n < 10) [L712] FCALL, FORK 0 pthread_create(&t1, 0, thr1, 0) VAL [\old(argc)=49, argc=49, argv={50:51}, argv={50:51}, mut={3:0}, n=5, pthread_create(&t1, 0, thr1, 0)=10, t1={6:0}, t2={7:0}, x=0] [L713] 0 int i = 0; VAL [\old(argc)=49, argc=49, argv={50:51}, argv={50:51}, i=0, mut={3:0}, n=5, t1={6:0}, t2={7:0}, x=0] [L713] 0 i < n [L713] COND TRUE 0 i < n [L694] 1 x <= n VAL [arg={0:0}, arg={0:0}, mut={3:0}, n=5, x=0] [L714] FCALL, FORK 0 pthread_create(&t2, 0, thr2, 0) VAL [\old(argc)=49, argc=49, argv={50:51}, argv={50:51}, i=0, mut={3:0}, n=5, pthread_create(&t2, 0, thr2, 0)=11, t1={6:0}, t2={7:0}, x=0] [L697] 2 int t; [L698] 2 int k = __VERIFIER_nondet_uint(); [L699] CALL 2 assume_abort_if_not(k >= (10/2) && k <= 10) [L687] COND FALSE 2 !(!cond) [L699] RET 2 assume_abort_if_not(k >= (10/2) && k <= 10) [L701] 2 t = x VAL [arg={0:0}, arg={0:0}, k=5, mut={3:0}, n=5, t=0, x=0] [L702] 2 k == n [L702] COND TRUE 2 k == n VAL [arg={0:0}, arg={0:0}, k=5, mut={3:0}, n=5, t=0, x=0] [L703] 2 x = t + 1 VAL [arg={0:0}, arg={0:0}, k=5, mut={3:0}, n=5, t=0, x=1, x = t + 1=52] [L694] 1 x <= n VAL [arg={0:0}, arg={0:0}, mut={3:0}, n=5, x=1] Now there is a data race on ~x~0 between C: x = t + 1 [703] and C: x <= n [694] - UnprovableResult [Line: 701]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 709]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 710]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 711]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 711]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 712]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 181 locations, 17 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: 4.2s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 90 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 44 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 83 IncrementalHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 8 mSDtfsCounter, 83 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=2, InterpolantAutomatonStates: 8, 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 7 procedures, 228 locations, 22 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: 6.5s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 182 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 87 mSDsluCounter, 27 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 38 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 251 IncrementalHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 38 mSolverCounterUnsat, 27 mSDtfsCounter, 251 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred in iteration=4, InterpolantAutomatonStates: 11, 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 27 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 RESULT: Ultimate proved your program to be incorrect! [2022-12-13 14:04:44,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cb9dfb0-e4ca-4505-8103-c53cd33be11d/bin/uautomizer-uyxdKDjOR8/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE