./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_03-munge_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2454b36a-fa76-4346-86dc-592b1f1177ff/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2454b36a-fa76-4346-86dc-592b1f1177ff/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2454b36a-fa76-4346-86dc-592b1f1177ff/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2454b36a-fa76-4346-86dc-592b1f1177ff/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_03-munge_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2454b36a-fa76-4346-86dc-592b1f1177ff/bin/uautomizer-tPACEb0tL8/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2454b36a-fa76-4346-86dc-592b1f1177ff/bin/uautomizer-tPACEb0tL8 --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 7df5d4e763d99c6ca9aa3d4daa03dcc5b8b9d65829db9a89ff85ebe5a14f3ac3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:15:16,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:15:16,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:15:16,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:15:16,697 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:15:16,698 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:15:16,701 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:15:16,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:15:16,710 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:15:16,713 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:15:16,715 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:15:16,718 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:15:16,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:15:16,722 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:15:16,728 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:15:16,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:15:16,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:15:16,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:15:16,737 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:15:16,742 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:15:16,746 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:15:16,748 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:15:16,749 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:15:16,751 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:15:16,756 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:15:16,761 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:15:16,762 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:15:16,763 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:15:16,764 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:15:16,766 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:15:16,766 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:15:16,767 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:15:16,769 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:15:16,771 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:15:16,772 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:15:16,773 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:15:16,773 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:15:16,774 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:15:16,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:15:16,775 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:15:16,776 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:15:16,777 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2454b36a-fa76-4346-86dc-592b1f1177ff/bin/uautomizer-tPACEb0tL8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-16 11:15:16,818 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:15:16,818 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:15:16,819 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:15:16,819 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:15:16,820 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:15:16,820 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:15:16,821 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:15:16,821 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:15:16,822 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:15:16,822 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:15:16,823 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:15:16,823 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:15:16,824 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:15:16,824 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:15:16,824 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:15:16,824 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:15:16,824 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:15:16,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:15:16,825 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-16 11:15:16,825 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:15:16,825 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:15:16,826 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:15:16,826 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:15:16,826 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:15:16,826 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:15:16,826 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:15:16,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:15:16,827 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:15:16,827 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:15:16,827 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:15:16,828 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:15:16,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:15:16,828 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:15:16,828 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:15:16,829 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:15:16,829 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2454b36a-fa76-4346-86dc-592b1f1177ff/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2454b36a-fa76-4346-86dc-592b1f1177ff/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7df5d4e763d99c6ca9aa3d4daa03dcc5b8b9d65829db9a89ff85ebe5a14f3ac3 [2022-11-16 11:15:17,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:15:17,126 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:15:17,129 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:15:17,131 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:15:17,132 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:15:17,133 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2454b36a-fa76-4346-86dc-592b1f1177ff/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/28-race_reach_03-munge_racing.i [2022-11-16 11:15:17,210 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2454b36a-fa76-4346-86dc-592b1f1177ff/bin/uautomizer-tPACEb0tL8/data/475e29ab6/0c5b6341fa594dbba4c77e51c30771b4/FLAGa00d4b9b2 [2022-11-16 11:15:17,801 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:15:17,802 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2454b36a-fa76-4346-86dc-592b1f1177ff/sv-benchmarks/c/goblint-regression/28-race_reach_03-munge_racing.i [2022-11-16 11:15:17,824 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2454b36a-fa76-4346-86dc-592b1f1177ff/bin/uautomizer-tPACEb0tL8/data/475e29ab6/0c5b6341fa594dbba4c77e51c30771b4/FLAGa00d4b9b2 [2022-11-16 11:15:18,053 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2454b36a-fa76-4346-86dc-592b1f1177ff/bin/uautomizer-tPACEb0tL8/data/475e29ab6/0c5b6341fa594dbba4c77e51c30771b4 [2022-11-16 11:15:18,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:15:18,058 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:15:18,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:15:18,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:15:18,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:15:18,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:15:18" (1/1) ... [2022-11-16 11:15:18,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75dac240 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:15:18, skipping insertion in model container [2022-11-16 11:15:18,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:15:18" (1/1) ... [2022-11-16 11:15:18,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:15:18,105 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:15:18,518 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2454b36a-fa76-4346-86dc-592b1f1177ff/sv-benchmarks/c/goblint-regression/28-race_reach_03-munge_racing.i[30176,30189] [2022-11-16 11:15:18,544 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:15:18,556 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:15:18,588 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2454b36a-fa76-4346-86dc-592b1f1177ff/sv-benchmarks/c/goblint-regression/28-race_reach_03-munge_racing.i[30176,30189] [2022-11-16 11:15:18,600 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:15:18,634 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:15:18,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:15:18 WrapperNode [2022-11-16 11:15:18,635 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:15:18,636 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:15:18,636 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:15:18,637 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:15:18,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:15:18" (1/1) ... [2022-11-16 11:15:18,658 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:15:18" (1/1) ... [2022-11-16 11:15:18,688 INFO L138 Inliner]: procedures = 172, calls = 43, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 237 [2022-11-16 11:15:18,689 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:15:18,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:15:18,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:15:18,690 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:15:18,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:15:18" (1/1) ... [2022-11-16 11:15:18,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:15:18" (1/1) ... [2022-11-16 11:15:18,703 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:15:18" (1/1) ... [2022-11-16 11:15:18,703 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:15:18" (1/1) ... [2022-11-16 11:15:18,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:15:18" (1/1) ... [2022-11-16 11:15:18,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:15:18" (1/1) ... [2022-11-16 11:15:18,730 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:15:18" (1/1) ... [2022-11-16 11:15:18,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:15:18" (1/1) ... [2022-11-16 11:15:18,735 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:15:18,736 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:15:18,736 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:15:18,736 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:15:18,750 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:15:18" (1/1) ... [2022-11-16 11:15:18,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:15:18,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2454b36a-fa76-4346-86dc-592b1f1177ff/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:15:18,784 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2454b36a-fa76-4346-86dc-592b1f1177ff/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:15:18,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2454b36a-fa76-4346-86dc-592b1f1177ff/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:15:18,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:15:18,850 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-16 11:15:18,851 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-16 11:15:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:15:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 11:15:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:15:18,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:15:18,852 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-11-16 11:15:18,852 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-11-16 11:15:18,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:15:18,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:15:18,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:15:18,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:15:18,855 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:15:19,036 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:15:19,038 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:15:19,441 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:15:19,450 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:15:19,450 INFO L300 CfgBuilder]: Removed 24 assume(true) statements. [2022-11-16 11:15:19,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:15:19 BoogieIcfgContainer [2022-11-16 11:15:19,453 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:15:19,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:15:19,455 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:15:19,459 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:15:19,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:15:18" (1/3) ... [2022-11-16 11:15:19,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c11d2bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:15:19, skipping insertion in model container [2022-11-16 11:15:19,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:15:18" (2/3) ... [2022-11-16 11:15:19,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c11d2bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:15:19, skipping insertion in model container [2022-11-16 11:15:19,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:15:19" (3/3) ... [2022-11-16 11:15:19,462 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_03-munge_racing.i [2022-11-16 11:15:19,470 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:15:19,483 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:15:19,484 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-16 11:15:19,484 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:15:19,639 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-16 11:15:19,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 229 places, 256 transitions, 534 flow [2022-11-16 11:15:19,971 INFO L130 PetriNetUnfolder]: 58/474 cut-off events. [2022-11-16 11:15:19,972 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-16 11:15:19,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 494 conditions, 474 events. 58/474 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2321 event pairs, 0 based on Foata normal form. 0/387 useless extension candidates. Maximal degree in co-relation 257. Up to 8 conditions per place. [2022-11-16 11:15:19,990 INFO L82 GeneralOperation]: Start removeDead. Operand has 229 places, 256 transitions, 534 flow [2022-11-16 11:15:20,005 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 229 places, 256 transitions, 534 flow [2022-11-16 11:15:20,023 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:15:20,029 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;@4ec7b875, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:15:20,030 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2022-11-16 11:15:20,040 INFO L130 PetriNetUnfolder]: 5/92 cut-off events. [2022-11-16 11:15:20,040 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:15:20,041 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:15:20,041 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:15:20,042 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr4ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-16 11:15:20,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:15:20,048 INFO L85 PathProgramCache]: Analyzing trace with hash 426725136, now seen corresponding path program 1 times [2022-11-16 11:15:20,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:15:20,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322470694] [2022-11-16 11:15:20,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:20,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:15:20,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:15:20,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:15:20,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:15:20,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322470694] [2022-11-16 11:15:20,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322470694] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:15:20,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:15:20,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:15:20,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801380491] [2022-11-16 11:15:20,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:15:20,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:15:20,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:15:20,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:15:20,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:15:20,396 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 256 [2022-11-16 11:15:20,407 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 256 transitions, 534 flow. Second operand has 2 states, 2 states have (on average 223.0) internal successors, (446), 2 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:20,408 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:15:20,409 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 256 [2022-11-16 11:15:20,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:15:20,586 INFO L130 PetriNetUnfolder]: 11/424 cut-off events. [2022-11-16 11:15:20,586 INFO L131 PetriNetUnfolder]: For 33/43 co-relation queries the response was YES. [2022-11-16 11:15:20,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 456 conditions, 424 events. 11/424 cut-off events. For 33/43 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2060 event pairs, 0 based on Foata normal form. 95/475 useless extension candidates. Maximal degree in co-relation 229. Up to 12 conditions per place. [2022-11-16 11:15:20,596 INFO L137 encePairwiseOnDemand]: 230/256 looper letters, 6 selfloop transitions, 0 changer transitions 0/228 dead transitions. [2022-11-16 11:15:20,597 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 228 transitions, 490 flow [2022-11-16 11:15:20,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:15:20,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 11:15:20,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 476 transitions. [2022-11-16 11:15:20,628 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9296875 [2022-11-16 11:15:20,629 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 476 transitions. [2022-11-16 11:15:20,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 476 transitions. [2022-11-16 11:15:20,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:15:20,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 476 transitions. [2022-11-16 11:15:20,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 238.0) internal successors, (476), 2 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:20,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 256.0) internal successors, (768), 3 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:20,654 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 256.0) internal successors, (768), 3 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:20,656 INFO L175 Difference]: Start difference. First operand has 229 places, 256 transitions, 534 flow. Second operand 2 states and 476 transitions. [2022-11-16 11:15:20,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 228 transitions, 490 flow [2022-11-16 11:15:20,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 228 transitions, 490 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:15:20,671 INFO L231 Difference]: Finished difference. Result has 228 places, 228 transitions, 478 flow [2022-11-16 11:15:20,674 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=478, PETRI_PLACES=228, PETRI_TRANSITIONS=228} [2022-11-16 11:15:20,680 INFO L288 CegarLoopForPetriNet]: 229 programPoint places, -1 predicate places. [2022-11-16 11:15:20,681 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 228 transitions, 478 flow [2022-11-16 11:15:20,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 223.0) internal successors, (446), 2 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:20,682 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:15:20,683 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:15:20,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:15:20,684 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr4ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-16 11:15:20,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:15:20,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1251646608, now seen corresponding path program 1 times [2022-11-16 11:15:20,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:15:20,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420807234] [2022-11-16 11:15:20,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:20,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:15:20,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:15:20,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:15:20,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:15:20,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420807234] [2022-11-16 11:15:20,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420807234] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:15:20,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:15:20,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:15:20,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167866104] [2022-11-16 11:15:20,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:15:21,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:15:21,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:15:21,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:15:21,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:15:21,003 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 256 [2022-11-16 11:15:21,004 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 228 transitions, 478 flow. Second operand has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:21,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:15:21,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 256 [2022-11-16 11:15:21,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:15:21,145 INFO L130 PetriNetUnfolder]: 8/339 cut-off events. [2022-11-16 11:15:21,145 INFO L131 PetriNetUnfolder]: For 27/43 co-relation queries the response was YES. [2022-11-16 11:15:21,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 377 conditions, 339 events. 8/339 cut-off events. For 27/43 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1241 event pairs, 0 based on Foata normal form. 2/308 useless extension candidates. Maximal degree in co-relation 372. Up to 15 conditions per place. [2022-11-16 11:15:21,151 INFO L137 encePairwiseOnDemand]: 253/256 looper letters, 13 selfloop transitions, 2 changer transitions 0/230 dead transitions. [2022-11-16 11:15:21,151 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 230 transitions, 512 flow [2022-11-16 11:15:21,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:15:21,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:15:21,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 661 transitions. [2022-11-16 11:15:21,154 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8606770833333334 [2022-11-16 11:15:21,154 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 661 transitions. [2022-11-16 11:15:21,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 661 transitions. [2022-11-16 11:15:21,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:15:21,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 661 transitions. [2022-11-16 11:15:21,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:21,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:21,161 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:21,161 INFO L175 Difference]: Start difference. First operand has 228 places, 228 transitions, 478 flow. Second operand 3 states and 661 transitions. [2022-11-16 11:15:21,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 230 transitions, 512 flow [2022-11-16 11:15:21,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 230 transitions, 512 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:15:21,168 INFO L231 Difference]: Finished difference. Result has 231 places, 228 transitions, 486 flow [2022-11-16 11:15:21,169 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=486, PETRI_PLACES=231, PETRI_TRANSITIONS=228} [2022-11-16 11:15:21,169 INFO L288 CegarLoopForPetriNet]: 229 programPoint places, 2 predicate places. [2022-11-16 11:15:21,170 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 228 transitions, 486 flow [2022-11-16 11:15:21,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:21,171 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:15:21,171 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:15:21,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:15:21,171 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr4ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-16 11:15:21,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:15:21,172 INFO L85 PathProgramCache]: Analyzing trace with hash -214365241, now seen corresponding path program 1 times [2022-11-16 11:15:21,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:15:21,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120216603] [2022-11-16 11:15:21,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:21,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:15:21,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:15:21,200 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:15:21,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:15:21,252 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:15:21,256 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:15:21,257 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (23 of 24 remaining) [2022-11-16 11:15:21,260 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (22 of 24 remaining) [2022-11-16 11:15:21,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (21 of 24 remaining) [2022-11-16 11:15:21,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (20 of 24 remaining) [2022-11-16 11:15:21,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (19 of 24 remaining) [2022-11-16 11:15:21,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (18 of 24 remaining) [2022-11-16 11:15:21,263 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (17 of 24 remaining) [2022-11-16 11:15:21,264 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 24 remaining) [2022-11-16 11:15:21,264 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 24 remaining) [2022-11-16 11:15:21,265 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 24 remaining) [2022-11-16 11:15:21,265 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 24 remaining) [2022-11-16 11:15:21,265 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 24 remaining) [2022-11-16 11:15:21,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 24 remaining) [2022-11-16 11:15:21,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 24 remaining) [2022-11-16 11:15:21,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 24 remaining) [2022-11-16 11:15:21,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 24 remaining) [2022-11-16 11:15:21,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 24 remaining) [2022-11-16 11:15:21,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 24 remaining) [2022-11-16 11:15:21,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 24 remaining) [2022-11-16 11:15:21,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 24 remaining) [2022-11-16 11:15:21,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 24 remaining) [2022-11-16 11:15:21,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 24 remaining) [2022-11-16 11:15:21,272 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 24 remaining) [2022-11-16 11:15:21,274 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 24 remaining) [2022-11-16 11:15:21,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:15:21,275 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-16 11:15:21,278 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:15:21,278 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-16 11:15:21,392 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-16 11:15:21,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 361 places, 412 transitions, 872 flow [2022-11-16 11:15:21,903 INFO L130 PetriNetUnfolder]: 197/1423 cut-off events. [2022-11-16 11:15:21,903 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-11-16 11:15:21,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1520 conditions, 1423 events. 197/1423 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 9396 event pairs, 1 based on Foata normal form. 0/1167 useless extension candidates. Maximal degree in co-relation 857. Up to 32 conditions per place. [2022-11-16 11:15:21,937 INFO L82 GeneralOperation]: Start removeDead. Operand has 361 places, 412 transitions, 872 flow [2022-11-16 11:15:21,971 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 361 places, 412 transitions, 872 flow [2022-11-16 11:15:21,973 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:15:21,974 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;@4ec7b875, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:15:21,974 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2022-11-16 11:15:21,987 INFO L130 PetriNetUnfolder]: 5/93 cut-off events. [2022-11-16 11:15:21,987 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:15:21,987 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:15:21,988 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:15:21,988 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr4ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 30 more)] === [2022-11-16 11:15:21,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:15:21,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1110975216, now seen corresponding path program 1 times [2022-11-16 11:15:21,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:15:21,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431815161] [2022-11-16 11:15:21,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:21,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:15:22,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:15:22,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:15:22,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:15:22,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431815161] [2022-11-16 11:15:22,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431815161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:15:22,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:15:22,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:15:22,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171028900] [2022-11-16 11:15:22,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:15:22,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:15:22,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:15:22,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:15:22,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:15:22,040 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 348 out of 412 [2022-11-16 11:15:22,042 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 412 transitions, 872 flow. Second operand has 2 states, 2 states have (on average 349.0) internal successors, (698), 2 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:22,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:15:22,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 348 of 412 [2022-11-16 11:15:22,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:15:22,623 INFO L130 PetriNetUnfolder]: 65/1283 cut-off events. [2022-11-16 11:15:22,623 INFO L131 PetriNetUnfolder]: For 237/324 co-relation queries the response was YES. [2022-11-16 11:15:22,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1453 conditions, 1283 events. 65/1283 cut-off events. For 237/324 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 8923 event pairs, 1 based on Foata normal form. 790/1932 useless extension candidates. Maximal degree in co-relation 801. Up to 73 conditions per place. [2022-11-16 11:15:22,655 INFO L137 encePairwiseOnDemand]: 364/412 looper letters, 12 selfloop transitions, 0 changer transitions 0/360 dead transitions. [2022-11-16 11:15:22,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 360 transitions, 792 flow [2022-11-16 11:15:22,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:15:22,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 11:15:22,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 756 transitions. [2022-11-16 11:15:22,658 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9174757281553398 [2022-11-16 11:15:22,659 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 756 transitions. [2022-11-16 11:15:22,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 756 transitions. [2022-11-16 11:15:22,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:15:22,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 756 transitions. [2022-11-16 11:15:22,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 378.0) internal successors, (756), 2 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:22,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 412.0) internal successors, (1236), 3 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:22,668 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 412.0) internal successors, (1236), 3 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:22,669 INFO L175 Difference]: Start difference. First operand has 361 places, 412 transitions, 872 flow. Second operand 2 states and 756 transitions. [2022-11-16 11:15:22,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 360 transitions, 792 flow [2022-11-16 11:15:22,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 360 transitions, 792 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:15:22,679 INFO L231 Difference]: Finished difference. Result has 358 places, 360 transitions, 768 flow [2022-11-16 11:15:22,685 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=768, PETRI_PLACES=358, PETRI_TRANSITIONS=360} [2022-11-16 11:15:22,688 INFO L288 CegarLoopForPetriNet]: 361 programPoint places, -3 predicate places. [2022-11-16 11:15:22,688 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 360 transitions, 768 flow [2022-11-16 11:15:22,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 349.0) internal successors, (698), 2 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:22,689 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:15:22,689 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:15:22,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:15:22,690 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr4ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 30 more)] === [2022-11-16 11:15:22,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:15:22,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1505620336, now seen corresponding path program 1 times [2022-11-16 11:15:22,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:15:22,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4725083] [2022-11-16 11:15:22,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:22,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:15:22,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:15:22,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:15:22,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:15:22,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4725083] [2022-11-16 11:15:22,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4725083] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:15:22,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:15:22,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:15:22,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224734705] [2022-11-16 11:15:22,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:15:22,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:15:22,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:15:22,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:15:22,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:15:22,824 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 341 out of 412 [2022-11-16 11:15:22,826 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 360 transitions, 768 flow. Second operand has 3 states, 3 states have (on average 342.0) internal successors, (1026), 3 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:22,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:15:22,826 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 341 of 412 [2022-11-16 11:15:22,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:15:23,337 INFO L130 PetriNetUnfolder]: 60/1123 cut-off events. [2022-11-16 11:15:23,337 INFO L131 PetriNetUnfolder]: For 242/384 co-relation queries the response was YES. [2022-11-16 11:15:23,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1299 conditions, 1123 events. 60/1123 cut-off events. For 242/384 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 7301 event pairs, 2 based on Foata normal form. 2/1005 useless extension candidates. Maximal degree in co-relation 1292. Up to 80 conditions per place. [2022-11-16 11:15:23,373 INFO L137 encePairwiseOnDemand]: 409/412 looper letters, 21 selfloop transitions, 2 changer transitions 0/364 dead transitions. [2022-11-16 11:15:23,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 364 transitions, 822 flow [2022-11-16 11:15:23,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:15:23,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:15:23,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1047 transitions. [2022-11-16 11:15:23,378 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8470873786407767 [2022-11-16 11:15:23,378 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1047 transitions. [2022-11-16 11:15:23,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1047 transitions. [2022-11-16 11:15:23,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:15:23,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1047 transitions. [2022-11-16 11:15:23,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 349.0) internal successors, (1047), 3 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:23,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 412.0) internal successors, (1648), 4 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:23,389 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 412.0) internal successors, (1648), 4 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:23,389 INFO L175 Difference]: Start difference. First operand has 358 places, 360 transitions, 768 flow. Second operand 3 states and 1047 transitions. [2022-11-16 11:15:23,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 364 transitions, 822 flow [2022-11-16 11:15:23,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 364 transitions, 822 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:15:23,401 INFO L231 Difference]: Finished difference. Result has 361 places, 361 transitions, 780 flow [2022-11-16 11:15:23,402 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=780, PETRI_PLACES=361, PETRI_TRANSITIONS=361} [2022-11-16 11:15:23,402 INFO L288 CegarLoopForPetriNet]: 361 programPoint places, 0 predicate places. [2022-11-16 11:15:23,403 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 361 transitions, 780 flow [2022-11-16 11:15:23,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 342.0) internal successors, (1026), 3 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:23,404 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:15:23,404 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:15:23,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:15:23,405 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1_funErr4ASSERT_VIOLATIONDATA_RACE === [t2_funErr4ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 30 more)] === [2022-11-16 11:15:23,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:15:23,406 INFO L85 PathProgramCache]: Analyzing trace with hash 344599479, now seen corresponding path program 1 times [2022-11-16 11:15:23,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:15:23,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027820769] [2022-11-16 11:15:23,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:23,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:15:23,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:15:23,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:15:23,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:15:23,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027820769] [2022-11-16 11:15:23,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027820769] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:15:23,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:15:23,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:15:23,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108957824] [2022-11-16 11:15:23,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:15:23,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:15:23,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:15:23,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:15:23,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:15:23,469 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 412 [2022-11-16 11:15:23,471 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 361 transitions, 780 flow. Second operand has 3 states, 3 states have (on average 289.0) internal successors, (867), 3 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:23,471 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:15:23,472 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 412 [2022-11-16 11:15:23,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand