./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.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_452fe0c3-da90-4352-8c3e-c8e6c1434e16/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452fe0c3-da90-4352-8c3e-c8e6c1434e16/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_452fe0c3-da90-4352-8c3e-c8e6c1434e16/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452fe0c3-da90-4352-8c3e-c8e6c1434e16/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452fe0c3-da90-4352-8c3e-c8e6c1434e16/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_452fe0c3-da90-4352-8c3e-c8e6c1434e16/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 1fe12ce8951e45860142b9cebaa325eef531c18fa917882c03ee5396afb187f5 --- 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 22:12:45,732 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 22:12:45,733 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 22:12:45,747 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 22:12:45,747 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 22:12:45,748 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 22:12:45,749 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 22:12:45,750 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 22:12:45,751 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 22:12:45,752 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 22:12:45,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 22:12:45,753 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 22:12:45,754 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 22:12:45,754 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 22:12:45,755 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 22:12:45,756 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 22:12:45,757 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 22:12:45,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 22:12:45,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 22:12:45,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 22:12:45,761 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 22:12:45,762 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 22:12:45,763 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 22:12:45,763 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 22:12:45,766 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 22:12:45,766 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 22:12:45,766 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 22:12:45,767 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 22:12:45,767 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 22:12:45,768 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 22:12:45,768 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 22:12:45,769 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 22:12:45,769 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 22:12:45,770 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 22:12:45,770 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 22:12:45,771 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 22:12:45,771 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 22:12:45,771 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 22:12:45,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 22:12:45,772 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 22:12:45,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 22:12:45,773 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452fe0c3-da90-4352-8c3e-c8e6c1434e16/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-12-13 22:12:45,788 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 22:12:45,788 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 22:12:45,789 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 22:12:45,789 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 22:12:45,789 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 22:12:45,789 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 22:12:45,790 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 22:12:45,790 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 22:12:45,790 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 22:12:45,790 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 22:12:45,791 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 22:12:45,791 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 22:12:45,791 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 22:12:45,791 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 22:12:45,791 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 22:12:45,791 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 22:12:45,791 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 22:12:45,792 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 22:12:45,792 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-13 22:12:45,792 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 22:12:45,792 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 22:12:45,792 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 22:12:45,792 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 22:12:45,793 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 22:12:45,793 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 22:12:45,793 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 22:12:45,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:12:45,793 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 22:12:45,793 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 22:12:45,794 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 22:12:45,794 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 22:12:45,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 22:12:45,794 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 22:12:45,794 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 22:12:45,794 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 22:12:45,795 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 22:12:45,795 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 22:12:45,795 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_452fe0c3-da90-4352-8c3e-c8e6c1434e16/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452fe0c3-da90-4352-8c3e-c8e6c1434e16/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fe12ce8951e45860142b9cebaa325eef531c18fa917882c03ee5396afb187f5 [2022-12-13 22:12:45,959 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 22:12:45,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 22:12:45,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 22:12:45,983 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 22:12:45,984 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 22:12:45,985 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452fe0c3-da90-4352-8c3e-c8e6c1434e16/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i [2022-12-13 22:12:48,548 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 22:12:48,700 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 22:12:48,701 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452fe0c3-da90-4352-8c3e-c8e6c1434e16/sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i [2022-12-13 22:12:48,710 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452fe0c3-da90-4352-8c3e-c8e6c1434e16/bin/uautomizer-uyxdKDjOR8/data/ff9eeb5d6/12c699b430a84f5c983f16a3eecd6d23/FLAG14c2b8f7f [2022-12-13 22:12:48,721 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452fe0c3-da90-4352-8c3e-c8e6c1434e16/bin/uautomizer-uyxdKDjOR8/data/ff9eeb5d6/12c699b430a84f5c983f16a3eecd6d23 [2022-12-13 22:12:48,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 22:12:48,724 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 22:12:48,726 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 22:12:48,726 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 22:12:48,729 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 22:12:48,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:12:48" (1/1) ... [2022-12-13 22:12:48,731 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46fc64a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:12:48, skipping insertion in model container [2022-12-13 22:12:48,731 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:12:48" (1/1) ... [2022-12-13 22:12:48,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 22:12:48,770 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 22:12:48,979 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_452fe0c3-da90-4352-8c3e-c8e6c1434e16/sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i[30176,30189] [2022-12-13 22:12:48,998 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:12:49,008 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 22:12:49,033 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_452fe0c3-da90-4352-8c3e-c8e6c1434e16/sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i[30176,30189] [2022-12-13 22:12:49,040 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:12:49,067 INFO L208 MainTranslator]: Completed translation [2022-12-13 22:12:49,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:12:49 WrapperNode [2022-12-13 22:12:49,068 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 22:12:49,068 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 22:12:49,069 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 22:12:49,069 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 22:12:49,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:12:49" (1/1) ... [2022-12-13 22:12:49,084 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:12:49" (1/1) ... [2022-12-13 22:12:49,102 INFO L138 Inliner]: procedures = 172, calls = 33, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 125 [2022-12-13 22:12:49,103 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 22:12:49,103 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 22:12:49,103 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 22:12:49,103 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 22:12:49,110 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:12:49" (1/1) ... [2022-12-13 22:12:49,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:12:49" (1/1) ... [2022-12-13 22:12:49,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:12:49" (1/1) ... [2022-12-13 22:12:49,113 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:12:49" (1/1) ... [2022-12-13 22:12:49,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:12:49" (1/1) ... [2022-12-13 22:12:49,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:12:49" (1/1) ... [2022-12-13 22:12:49,121 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:12:49" (1/1) ... [2022-12-13 22:12:49,122 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:12:49" (1/1) ... [2022-12-13 22:12:49,124 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 22:12:49,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 22:12:49,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 22:12:49,125 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 22:12:49,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:12:49" (1/1) ... [2022-12-13 22:12:49,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:12:49,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452fe0c3-da90-4352-8c3e-c8e6c1434e16/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:12:49,152 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452fe0c3-da90-4352-8c3e-c8e6c1434e16/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 22:12:49,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452fe0c3-da90-4352-8c3e-c8e6c1434e16/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 22:12:49,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 22:12:49,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 22:12:49,187 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 22:12:49,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 22:12:49,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 22:12:49,187 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 22:12:49,187 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 22:12:49,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 22:12:49,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 22:12:49,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 22:12:49,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 22:12:49,189 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 22:12:49,285 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 22:12:49,287 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 22:12:49,499 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 22:12:49,505 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 22:12:49,505 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-12-13 22:12:49,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:12:49 BoogieIcfgContainer [2022-12-13 22:12:49,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 22:12:49,509 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 22:12:49,509 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 22:12:49,511 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 22:12:49,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 10:12:48" (1/3) ... [2022-12-13 22:12:49,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32de7f42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:12:49, skipping insertion in model container [2022-12-13 22:12:49,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:12:49" (2/3) ... [2022-12-13 22:12:49,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32de7f42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:12:49, skipping insertion in model container [2022-12-13 22:12:49,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:12:49" (3/3) ... [2022-12-13 22:12:49,514 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_05-lockfuns_racefree.i [2022-12-13 22:12:49,520 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 22:12:49,529 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 22:12:49,529 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-12-13 22:12:49,529 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 22:12:49,578 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 22:12:49,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 139 transitions, 286 flow [2022-12-13 22:12:49,654 INFO L130 PetriNetUnfolder]: 17/188 cut-off events. [2022-12-13 22:12:49,654 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 22:12:49,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 188 events. 17/188 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 557 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 103. Up to 4 conditions per place. [2022-12-13 22:12:49,659 INFO L82 GeneralOperation]: Start removeDead. Operand has 130 places, 139 transitions, 286 flow [2022-12-13 22:12:49,662 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 139 transitions, 286 flow [2022-12-13 22:12:49,665 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 22:12:49,673 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 130 places, 139 transitions, 286 flow [2022-12-13 22:12:49,675 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 130 places, 139 transitions, 286 flow [2022-12-13 22:12:49,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 139 transitions, 286 flow [2022-12-13 22:12:49,705 INFO L130 PetriNetUnfolder]: 17/188 cut-off events. [2022-12-13 22:12:49,705 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 22:12:49,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 188 events. 17/188 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 557 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 103. Up to 4 conditions per place. [2022-12-13 22:12:49,720 INFO L119 LiptonReduction]: Number of co-enabled transitions 5390 [2022-12-13 22:12:51,959 INFO L134 LiptonReduction]: Checked pairs total: 11209 [2022-12-13 22:12:51,959 INFO L136 LiptonReduction]: Total number of compositions: 109 [2022-12-13 22:12:51,969 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 22:12:51,974 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;@21c97a0e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 22:12:51,974 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-12-13 22:12:51,977 INFO L130 PetriNetUnfolder]: 0/9 cut-off events. [2022-12-13 22:12:51,977 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 22:12:51,977 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:12:51,978 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 22:12:51,978 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-12-13 22:12:51,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:12:51,983 INFO L85 PathProgramCache]: Analyzing trace with hash 16128169, now seen corresponding path program 1 times [2022-12-13 22:12:51,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:12:51,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463361687] [2022-12-13 22:12:51,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:12:51,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:12:52,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:12:52,152 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 22:12:52,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:12:52,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463361687] [2022-12-13 22:12:52,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463361687] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:12:52,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:12:52,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 22:12:52,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300502936] [2022-12-13 22:12:52,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:12:52,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:12:52,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:12:52,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:12:52,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:12:52,190 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 248 [2022-12-13 22:12:52,192 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 47 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 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 22:12:52,192 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:12:52,192 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 248 [2022-12-13 22:12:52,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:12:52,277 INFO L130 PetriNetUnfolder]: 120/317 cut-off events. [2022-12-13 22:12:52,277 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 22:12:52,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 605 conditions, 317 events. 120/317 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1455 event pairs, 0 based on Foata normal form. 35/319 useless extension candidates. Maximal degree in co-relation 559. Up to 255 conditions per place. [2022-12-13 22:12:52,280 INFO L137 encePairwiseOnDemand]: 236/248 looper letters, 35 selfloop transitions, 2 changer transitions 2/51 dead transitions. [2022-12-13 22:12:52,280 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 51 transitions, 188 flow [2022-12-13 22:12:52,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:12:52,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:12:52,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 418 transitions. [2022-12-13 22:12:52,291 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5618279569892473 [2022-12-13 22:12:52,292 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 418 transitions. [2022-12-13 22:12:52,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 418 transitions. [2022-12-13 22:12:52,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:12:52,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 418 transitions. [2022-12-13 22:12:52,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 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 22:12:52,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 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 22:12:52,301 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 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 22:12:52,303 INFO L175 Difference]: Start difference. First operand has 41 places, 47 transitions, 102 flow. Second operand 3 states and 418 transitions. [2022-12-13 22:12:52,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 51 transitions, 188 flow [2022-12-13 22:12:52,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 51 transitions, 188 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 22:12:52,307 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 85 flow [2022-12-13 22:12:52,308 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2022-12-13 22:12:52,311 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2022-12-13 22:12:52,311 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 85 flow [2022-12-13 22:12:52,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 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 22:12:52,311 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:12:52,311 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 22:12:52,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 22:12:52,312 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-12-13 22:12:52,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:12:52,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1708207017, now seen corresponding path program 1 times [2022-12-13 22:12:52,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:12:52,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730656012] [2022-12-13 22:12:52,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:12:52,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:12:52,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 22:12:52,335 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 22:12:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 22:12:52,358 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 22:12:52,359 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 22:12:52,360 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-12-13 22:12:52,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2022-12-13 22:12:52,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2022-12-13 22:12:52,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2022-12-13 22:12:52,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2022-12-13 22:12:52,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2022-12-13 22:12:52,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2022-12-13 22:12:52,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2022-12-13 22:12:52,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2022-12-13 22:12:52,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2022-12-13 22:12:52,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2022-12-13 22:12:52,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 22:12:52,363 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 22:12:52,365 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 22:12:52,365 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 22:12:52,391 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 22:12:52,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 190 transitions, 398 flow [2022-12-13 22:12:52,423 INFO L130 PetriNetUnfolder]: 31/319 cut-off events. [2022-12-13 22:12:52,423 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 22:12:52,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 319 events. 31/319 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1153 event pairs, 0 based on Foata normal form. 0/269 useless extension candidates. Maximal degree in co-relation 190. Up to 8 conditions per place. [2022-12-13 22:12:52,425 INFO L82 GeneralOperation]: Start removeDead. Operand has 176 places, 190 transitions, 398 flow [2022-12-13 22:12:52,427 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 190 transitions, 398 flow [2022-12-13 22:12:52,427 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 22:12:52,427 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 176 places, 190 transitions, 398 flow [2022-12-13 22:12:52,427 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 176 places, 190 transitions, 398 flow [2022-12-13 22:12:52,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 190 transitions, 398 flow [2022-12-13 22:12:52,452 INFO L130 PetriNetUnfolder]: 31/319 cut-off events. [2022-12-13 22:12:52,452 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 22:12:52,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 319 events. 31/319 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1153 event pairs, 0 based on Foata normal form. 0/269 useless extension candidates. Maximal degree in co-relation 190. Up to 8 conditions per place. [2022-12-13 22:12:52,460 INFO L119 LiptonReduction]: Number of co-enabled transitions 16660 [2022-12-13 22:12:54,505 INFO L134 LiptonReduction]: Checked pairs total: 48860 [2022-12-13 22:12:54,505 INFO L136 LiptonReduction]: Total number of compositions: 131 [2022-12-13 22:12:54,508 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 22:12:54,509 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;@21c97a0e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 22:12:54,509 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-12-13 22:12:54,511 INFO L130 PetriNetUnfolder]: 0/10 cut-off events. [2022-12-13 22:12:54,512 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 22:12:54,512 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:12:54,512 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 22:12:54,512 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-12-13 22:12:54,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:12:54,513 INFO L85 PathProgramCache]: Analyzing trace with hash 27576812, now seen corresponding path program 1 times [2022-12-13 22:12:54,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:12:54,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264552996] [2022-12-13 22:12:54,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:12:54,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:12:54,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:12:54,554 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 22:12:54,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:12:54,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264552996] [2022-12-13 22:12:54,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264552996] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:12:54,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:12:54,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 22:12:54,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123738378] [2022-12-13 22:12:54,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:12:54,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:12:54,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:12:54,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:12:54,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:12:54,565 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 321 [2022-12-13 22:12:54,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 82 transitions, 182 flow. Second operand has 3 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 22:12:54,565 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:12:54,565 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 321 [2022-12-13 22:12:54,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:12:54,971 INFO L130 PetriNetUnfolder]: 2472/5105 cut-off events. [2022-12-13 22:12:54,971 INFO L131 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2022-12-13 22:12:54,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9161 conditions, 5105 events. 2472/5105 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 37747 event pairs, 2188 based on Foata normal form. 523/5081 useless extension candidates. Maximal degree in co-relation 6103. Up to 3973 conditions per place. [2022-12-13 22:12:54,990 INFO L137 encePairwiseOnDemand]: 303/321 looper letters, 46 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2022-12-13 22:12:54,990 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 79 transitions, 272 flow [2022-12-13 22:12:54,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:12:54,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:12:54,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 562 transitions. [2022-12-13 22:12:54,993 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5835929387331257 [2022-12-13 22:12:54,993 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 562 transitions. [2022-12-13 22:12:54,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 562 transitions. [2022-12-13 22:12:54,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:12:54,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 562 transitions. [2022-12-13 22:12:54,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 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 22:12:54,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 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 22:12:54,997 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 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 22:12:54,998 INFO L175 Difference]: Start difference. First operand has 71 places, 82 transitions, 182 flow. Second operand 3 states and 562 transitions. [2022-12-13 22:12:54,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 79 transitions, 272 flow [2022-12-13 22:12:54,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 79 transitions, 272 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 22:12:54,999 INFO L231 Difference]: Finished difference. Result has 73 places, 68 transitions, 164 flow [2022-12-13 22:12:55,000 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=73, PETRI_TRANSITIONS=68} [2022-12-13 22:12:55,000 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 2 predicate places. [2022-12-13 22:12:55,000 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 68 transitions, 164 flow [2022-12-13 22:12:55,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 22:12:55,001 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:12:55,001 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:12:55,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 22:12:55,001 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-12-13 22:12:55,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:12:55,002 INFO L85 PathProgramCache]: Analyzing trace with hash 927272488, now seen corresponding path program 1 times [2022-12-13 22:12:55,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:12:55,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440141881] [2022-12-13 22:12:55,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:12:55,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:12:55,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:12:55,030 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 22:12:55,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:12:55,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440141881] [2022-12-13 22:12:55,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440141881] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:12:55,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:12:55,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 22:12:55,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235957020] [2022-12-13 22:12:55,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:12:55,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:12:55,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:12:55,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:12:55,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:12:55,064 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 321 [2022-12-13 22:12:55,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 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 22:12:55,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:12:55,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 321 [2022-12-13 22:12:55,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:12:56,194 INFO L130 PetriNetUnfolder]: 8976/16023 cut-off events. [2022-12-13 22:12:56,194 INFO L131 PetriNetUnfolder]: For 871/871 co-relation queries the response was YES. [2022-12-13 22:12:56,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31426 conditions, 16023 events. 8976/16023 cut-off events. For 871/871 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 120024 event pairs, 3358 based on Foata normal form. 0/14842 useless extension candidates. Maximal degree in co-relation 31320. Up to 7883 conditions per place. [2022-12-13 22:12:56,264 INFO L137 encePairwiseOnDemand]: 302/321 looper letters, 81 selfloop transitions, 14 changer transitions 0/112 dead transitions. [2022-12-13 22:12:56,264 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 112 transitions, 460 flow [2022-12-13 22:12:56,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:12:56,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:12:56,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 545 transitions. [2022-12-13 22:12:56,268 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5659397715472482 [2022-12-13 22:12:56,268 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 545 transitions. [2022-12-13 22:12:56,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 545 transitions. [2022-12-13 22:12:56,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:12:56,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 545 transitions. [2022-12-13 22:12:56,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 181.66666666666666) internal successors, (545), 3 states have internal predecessors, (545), 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 22:12:56,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 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 22:12:56,272 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 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 22:12:56,272 INFO L175 Difference]: Start difference. First operand has 73 places, 68 transitions, 164 flow. Second operand 3 states and 545 transitions. [2022-12-13 22:12:56,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 112 transitions, 460 flow [2022-12-13 22:12:56,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 112 transitions, 457 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 22:12:56,275 INFO L231 Difference]: Finished difference. Result has 76 places, 82 transitions, 284 flow [2022-12-13 22:12:56,276 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=284, PETRI_PLACES=76, PETRI_TRANSITIONS=82} [2022-12-13 22:12:56,276 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 5 predicate places. [2022-12-13 22:12:56,276 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 82 transitions, 284 flow [2022-12-13 22:12:56,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 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 22:12:56,277 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:12:56,277 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-13 22:12:56,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 22:12:56,277 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-12-13 22:12:56,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:12:56,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1370480819, now seen corresponding path program 1 times [2022-12-13 22:12:56,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:12:56,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963622561] [2022-12-13 22:12:56,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:12:56,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:12:56,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 22:12:56,291 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 22:12:56,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 22:12:56,304 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 22:12:56,305 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 22:12:56,305 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2022-12-13 22:12:56,305 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2022-12-13 22:12:56,305 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2022-12-13 22:12:56,305 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2022-12-13 22:12:56,305 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2022-12-13 22:12:56,306 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2022-12-13 22:12:56,306 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2022-12-13 22:12:56,306 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2022-12-13 22:12:56,306 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2022-12-13 22:12:56,306 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2022-12-13 22:12:56,306 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2022-12-13 22:12:56,307 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2022-12-13 22:12:56,307 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2022-12-13 22:12:56,307 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2022-12-13 22:12:56,307 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2022-12-13 22:12:56,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 22:12:56,307 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-13 22:12:56,308 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 22:12:56,308 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 22:12:56,336 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 22:12:56,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 222 places, 241 transitions, 512 flow [2022-12-13 22:12:56,417 INFO L130 PetriNetUnfolder]: 50/495 cut-off events. [2022-12-13 22:12:56,417 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 22:12:56,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 523 conditions, 495 events. 50/495 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2003 event pairs, 1 based on Foata normal form. 0/417 useless extension candidates. Maximal degree in co-relation 327. Up to 16 conditions per place. [2022-12-13 22:12:56,421 INFO L82 GeneralOperation]: Start removeDead. Operand has 222 places, 241 transitions, 512 flow [2022-12-13 22:12:56,426 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 222 places, 241 transitions, 512 flow [2022-12-13 22:12:56,426 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 22:12:56,427 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 222 places, 241 transitions, 512 flow [2022-12-13 22:12:56,427 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 222 places, 241 transitions, 512 flow [2022-12-13 22:12:56,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 222 places, 241 transitions, 512 flow [2022-12-13 22:12:56,498 INFO L130 PetriNetUnfolder]: 50/495 cut-off events. [2022-12-13 22:12:56,498 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 22:12:56,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 523 conditions, 495 events. 50/495 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2003 event pairs, 1 based on Foata normal form. 0/417 useless extension candidates. Maximal degree in co-relation 327. Up to 16 conditions per place. [2022-12-13 22:12:56,517 INFO L119 LiptonReduction]: Number of co-enabled transitions 32634 [2022-12-13 22:12:59,113 INFO L134 LiptonReduction]: Checked pairs total: 119203 [2022-12-13 22:12:59,113 INFO L136 LiptonReduction]: Total number of compositions: 156 [2022-12-13 22:12:59,115 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 22:12:59,116 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;@21c97a0e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 22:12:59,116 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-12-13 22:12:59,117 INFO L130 PetriNetUnfolder]: 0/10 cut-off events. [2022-12-13 22:12:59,117 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 22:12:59,117 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:12:59,117 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 22:12:59,118 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 22:12:59,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:12:59,118 INFO L85 PathProgramCache]: Analyzing trace with hash 41368906, now seen corresponding path program 1 times [2022-12-13 22:12:59,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:12:59,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282044551] [2022-12-13 22:12:59,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:12:59,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:12:59,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:12:59,142 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 22:12:59,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:12:59,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282044551] [2022-12-13 22:12:59,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282044551] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:12:59,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:12:59,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 22:12:59,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713067903] [2022-12-13 22:12:59,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:12:59,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:12:59,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:12:59,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:12:59,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:12:59,153 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 397 [2022-12-13 22:12:59,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 113 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 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 22:12:59,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:12:59,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 397 [2022-12-13 22:12:59,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:13:03,793 INFO L130 PetriNetUnfolder]: 43367/71560 cut-off events. [2022-12-13 22:13:03,793 INFO L131 PetriNetUnfolder]: For 1359/1359 co-relation queries the response was YES. [2022-12-13 22:13:03,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133230 conditions, 71560 events. 43367/71560 cut-off events. For 1359/1359 co-relation queries the response was YES. Maximal size of possible extension queue 1803. Compared 629794 event pairs, 41684 based on Foata normal form. 7483/72357 useless extension candidates. Maximal degree in co-relation 55625. Up to 60642 conditions per place. [2022-12-13 22:13:04,151 INFO L137 encePairwiseOnDemand]: 373/397 looper letters, 58 selfloop transitions, 2 changer transitions 0/104 dead transitions. [2022-12-13 22:13:04,151 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 104 transitions, 358 flow [2022-12-13 22:13:04,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:13:04,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:13:04,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 709 transitions. [2022-12-13 22:13:04,154 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5952980688497062 [2022-12-13 22:13:04,154 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 709 transitions. [2022-12-13 22:13:04,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 709 transitions. [2022-12-13 22:13:04,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:13:04,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 709 transitions. [2022-12-13 22:13:04,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 236.33333333333334) internal successors, (709), 3 states have internal predecessors, (709), 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 22:13:04,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 397.0) internal successors, (1588), 4 states have internal predecessors, (1588), 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 22:13:04,159 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 397.0) internal successors, (1588), 4 states have internal predecessors, (1588), 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 22:13:04,159 INFO L175 Difference]: Start difference. First operand has 97 places, 113 transitions, 256 flow. Second operand 3 states and 709 transitions. [2022-12-13 22:13:04,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 104 transitions, 358 flow [2022-12-13 22:13:04,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 104 transitions, 358 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 22:13:04,163 INFO L231 Difference]: Finished difference. Result has 99 places, 93 transitions, 226 flow [2022-12-13 22:13:04,163 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=99, PETRI_TRANSITIONS=93} [2022-12-13 22:13:04,164 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, 2 predicate places. [2022-12-13 22:13:04,164 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 93 transitions, 226 flow [2022-12-13 22:13:04,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 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 22:13:04,165 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:13:04,165 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:13:04,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 22:13:04,165 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 22:13:04,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:13:04,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1926894685, now seen corresponding path program 1 times [2022-12-13 22:13:04,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:13:04,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976931959] [2022-12-13 22:13:04,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:13:04,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:13:04,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:04,195 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 22:13:04,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:13:04,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976931959] [2022-12-13 22:13:04,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976931959] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:13:04,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:13:04,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 22:13:04,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911837306] [2022-12-13 22:13:04,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:13:04,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:13:04,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:13:04,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:13:04,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:13:04,239 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 397 [2022-12-13 22:13:04,241 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 93 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 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 22:13:04,241 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:13:04,241 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 397 [2022-12-13 22:13:04,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:13:31,027 INFO L130 PetriNetUnfolder]: 302019/455617 cut-off events. [2022-12-13 22:13:31,028 INFO L131 PetriNetUnfolder]: For 21037/21037 co-relation queries the response was YES. [2022-12-13 22:13:31,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 898276 conditions, 455617 events. 302019/455617 cut-off events. For 21037/21037 co-relation queries the response was YES. Maximal size of possible extension queue 7857. Compared 4087018 event pairs, 124500 based on Foata normal form. 0/421562 useless extension candidates. Maximal degree in co-relation 898169. Up to 222080 conditions per place. [2022-12-13 22:13:33,150 INFO L137 encePairwiseOnDemand]: 370/397 looper letters, 111 selfloop transitions, 20 changer transitions 0/154 dead transitions. [2022-12-13 22:13:33,150 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 154 transitions, 638 flow [2022-12-13 22:13:33,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:13:33,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:13:33,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 688 transitions. [2022-12-13 22:13:33,153 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5776658270361041 [2022-12-13 22:13:33,153 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 688 transitions. [2022-12-13 22:13:33,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 688 transitions. [2022-12-13 22:13:33,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:13:33,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 688 transitions. [2022-12-13 22:13:33,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 229.33333333333334) internal successors, (688), 3 states have internal predecessors, (688), 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 22:13:33,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 397.0) internal successors, (1588), 4 states have internal predecessors, (1588), 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 22:13:33,157 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 397.0) internal successors, (1588), 4 states have internal predecessors, (1588), 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 22:13:33,157 INFO L175 Difference]: Start difference. First operand has 99 places, 93 transitions, 226 flow. Second operand 3 states and 688 transitions. [2022-12-13 22:13:33,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 154 transitions, 638 flow [2022-12-13 22:13:33,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 154 transitions, 635 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 22:13:33,173 INFO L231 Difference]: Finished difference. Result has 102 places, 113 transitions, 398 flow [2022-12-13 22:13:33,174 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=398, PETRI_PLACES=102, PETRI_TRANSITIONS=113} [2022-12-13 22:13:33,174 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, 5 predicate places. [2022-12-13 22:13:33,174 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 113 transitions, 398 flow [2022-12-13 22:13:33,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 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 22:13:33,175 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:13:33,175 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:13:33,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 22:13:33,175 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 22:13:33,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:13:33,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1834111048, now seen corresponding path program 1 times [2022-12-13 22:13:33,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:13:33,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375498931] [2022-12-13 22:13:33,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:13:33,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:13:33,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:33,199 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 22:13:33,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:13:33,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375498931] [2022-12-13 22:13:33,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375498931] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:13:33,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:13:33,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 22:13:33,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365322721] [2022-12-13 22:13:33,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:13:33,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:13:33,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:13:33,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:13:33,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:13:33,240 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 397 [2022-12-13 22:13:33,241 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 113 transitions, 398 flow. Second operand has 3 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:13:33,241 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:13:33,241 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 397 [2022-12-13 22:13:33,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:14:00,334 INFO L130 PetriNetUnfolder]: 281645/433823 cut-off events. [2022-12-13 22:14:00,334 INFO L131 PetriNetUnfolder]: For 225216/231333 co-relation queries the response was YES. [2022-12-13 22:14:01,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1047985 conditions, 433823 events. 281645/433823 cut-off events. For 225216/231333 co-relation queries the response was YES. Maximal size of possible extension queue 8666. Compared 4051964 event pairs, 184730 based on Foata normal form. 119/394362 useless extension candidates. Maximal degree in co-relation 350531. Up to 342386 conditions per place. [2022-12-13 22:14:02,645 INFO L137 encePairwiseOnDemand]: 384/397 looper letters, 105 selfloop transitions, 22 changer transitions 0/168 dead transitions. [2022-12-13 22:14:02,645 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 168 transitions, 846 flow [2022-12-13 22:14:02,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:14:02,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:14:02,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 684 transitions. [2022-12-13 22:14:02,648 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5743073047858942 [2022-12-13 22:14:02,648 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 684 transitions. [2022-12-13 22:14:02,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 684 transitions. [2022-12-13 22:14:02,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:14:02,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 684 transitions. [2022-12-13 22:14:02,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 228.0) internal successors, (684), 3 states have internal predecessors, (684), 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 22:14:02,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 397.0) internal successors, (1588), 4 states have internal predecessors, (1588), 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 22:14:02,652 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 397.0) internal successors, (1588), 4 states have internal predecessors, (1588), 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 22:14:02,652 INFO L175 Difference]: Start difference. First operand has 102 places, 113 transitions, 398 flow. Second operand 3 states and 684 transitions. [2022-12-13 22:14:02,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 168 transitions, 846 flow [2022-12-13 22:14:03,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 168 transitions, 786 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 22:14:03,021 INFO L231 Difference]: Finished difference. Result has 104 places, 133 transitions, 564 flow [2022-12-13 22:14:03,021 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=564, PETRI_PLACES=104, PETRI_TRANSITIONS=133} [2022-12-13 22:14:03,022 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, 7 predicate places. [2022-12-13 22:14:03,022 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 133 transitions, 564 flow [2022-12-13 22:14:03,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:14:03,023 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:14:03,023 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-12-13 22:14:03,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 22:14:03,023 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 22:14:03,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:14:03,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1086314329, now seen corresponding path program 1 times [2022-12-13 22:14:03,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:14:03,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952769108] [2022-12-13 22:14:03,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:14:03,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:14:03,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 22:14:03,035 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 22:14:03,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 22:14:03,045 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 22:14:03,046 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 22:14:03,046 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2022-12-13 22:14:03,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2022-12-13 22:14:03,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2022-12-13 22:14:03,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (15 of 19 remaining) [2022-12-13 22:14:03,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (14 of 19 remaining) [2022-12-13 22:14:03,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (13 of 19 remaining) [2022-12-13 22:14:03,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2022-12-13 22:14:03,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2022-12-13 22:14:03,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2022-12-13 22:14:03,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2022-12-13 22:14:03,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 19 remaining) [2022-12-13 22:14:03,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 19 remaining) [2022-12-13 22:14:03,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 19 remaining) [2022-12-13 22:14:03,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 19 remaining) [2022-12-13 22:14:03,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 19 remaining) [2022-12-13 22:14:03,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2022-12-13 22:14:03,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 19 remaining) [2022-12-13 22:14:03,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2022-12-13 22:14:03,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2022-12-13 22:14:03,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 22:14:03,048 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-12-13 22:14:03,048 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 22:14:03,048 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-12-13 22:14:03,070 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 22:14:03,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 268 places, 292 transitions, 628 flow [2022-12-13 22:14:03,162 INFO L130 PetriNetUnfolder]: 81/763 cut-off events. [2022-12-13 22:14:03,162 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-13 22:14:03,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 818 conditions, 763 events. 81/763 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3415 event pairs, 6 based on Foata normal form. 0/645 useless extension candidates. Maximal degree in co-relation 515. Up to 32 conditions per place. [2022-12-13 22:14:03,167 INFO L82 GeneralOperation]: Start removeDead. Operand has 268 places, 292 transitions, 628 flow [2022-12-13 22:14:03,171 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 268 places, 292 transitions, 628 flow [2022-12-13 22:14:03,171 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 22:14:03,171 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 268 places, 292 transitions, 628 flow [2022-12-13 22:14:03,172 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 268 places, 292 transitions, 628 flow [2022-12-13 22:14:03,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 268 places, 292 transitions, 628 flow [2022-12-13 22:14:03,251 INFO L130 PetriNetUnfolder]: 81/763 cut-off events. [2022-12-13 22:14:03,252 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-13 22:14:03,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 818 conditions, 763 events. 81/763 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3415 event pairs, 6 based on Foata normal form. 0/645 useless extension candidates. Maximal degree in co-relation 515. Up to 32 conditions per place. [2022-12-13 22:14:03,279 INFO L119 LiptonReduction]: Number of co-enabled transitions 53704 [2022-12-13 22:14:05,615 INFO L134 LiptonReduction]: Checked pairs total: 179722 [2022-12-13 22:14:05,615 INFO L136 LiptonReduction]: Total number of compositions: 181 [2022-12-13 22:14:05,616 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 22:14:05,617 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;@21c97a0e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 22:14:05,617 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-12-13 22:14:05,618 INFO L130 PetriNetUnfolder]: 0/10 cut-off events. [2022-12-13 22:14:05,618 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 22:14:05,618 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:14:05,618 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 22:14:05,618 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2022-12-13 22:14:05,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:14:05,619 INFO L85 PathProgramCache]: Analyzing trace with hash 57499694, now seen corresponding path program 1 times [2022-12-13 22:14:05,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:14:05,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371233338] [2022-12-13 22:14:05,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:14:05,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:14:05,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:14:05,636 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 22:14:05,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:14:05,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371233338] [2022-12-13 22:14:05,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371233338] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:14:05,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:14:05,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 22:14:05,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814961251] [2022-12-13 22:14:05,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:14:05,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:14:05,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:14:05,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:14:05,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:14:05,646 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 473 [2022-12-13 22:14:05,648 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 144 transitions, 332 flow. Second operand has 3 states, 3 states have (on average 251.33333333333334) internal successors, (754), 3 states have internal predecessors, (754), 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 22:14:05,648 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:14:05,648 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 473 [2022-12-13 22:14:05,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:15:15,114 INFO L130 PetriNetUnfolder]: 667680/980280 cut-off events. [2022-12-13 22:15:15,114 INFO L131 PetriNetUnfolder]: For 25615/25615 co-relation queries the response was YES. [2022-12-13 22:15:17,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1859589 conditions, 980280 events. 667680/980280 cut-off events. For 25615/25615 co-relation queries the response was YES. Maximal size of possible extension queue 19098. Compared 9449864 event pairs, 631204 based on Foata normal form. 151989/1059851 useless extension candidates. Maximal degree in co-relation 499834. Up to 864805 conditions per place. [2022-12-13 22:15:21,512 INFO L137 encePairwiseOnDemand]: 443/473 looper letters, 70 selfloop transitions, 2 changer transitions 0/129 dead transitions. [2022-12-13 22:15:21,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 129 transitions, 446 flow [2022-12-13 22:15:21,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:15:21,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:15:21,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 856 transitions. [2022-12-13 22:15:21,516 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6032417195207893 [2022-12-13 22:15:21,516 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 856 transitions. [2022-12-13 22:15:21,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 856 transitions. [2022-12-13 22:15:21,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:15:21,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 856 transitions. [2022-12-13 22:15:21,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 285.3333333333333) internal successors, (856), 3 states have internal predecessors, (856), 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 22:15:21,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 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 22:15:21,521 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 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 22:15:21,521 INFO L175 Difference]: Start difference. First operand has 123 places, 144 transitions, 332 flow. Second operand 3 states and 856 transitions. [2022-12-13 22:15:21,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 129 transitions, 446 flow [2022-12-13 22:15:21,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 129 transitions, 446 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 22:15:21,540 INFO L231 Difference]: Finished difference. Result has 125 places, 118 transitions, 290 flow [2022-12-13 22:15:21,540 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=290, PETRI_PLACES=125, PETRI_TRANSITIONS=118} [2022-12-13 22:15:21,541 INFO L288 CegarLoopForPetriNet]: 123 programPoint places, 2 predicate places. [2022-12-13 22:15:21,541 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 118 transitions, 290 flow [2022-12-13 22:15:21,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 251.33333333333334) internal successors, (754), 3 states have internal predecessors, (754), 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 22:15:21,541 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:15:21,542 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:15:21,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 22:15:21,542 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2022-12-13 22:15:21,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:15:21,542 INFO L85 PathProgramCache]: Analyzing trace with hash -2113463243, now seen corresponding path program 1 times [2022-12-13 22:15:21,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:15:21,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114112889] [2022-12-13 22:15:21,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:15:21,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:15:21,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:21,571 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 22:15:21,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:15:21,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114112889] [2022-12-13 22:15:21,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114112889] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:15:21,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:15:21,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 22:15:21,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468650371] [2022-12-13 22:15:21,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:15:21,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:15:21,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:15:21,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:15:21,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:15:21,618 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 473 [2022-12-13 22:15:21,619 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 118 transitions, 290 flow. Second operand has 3 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 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 22:15:21,619 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:15:21,619 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 473 [2022-12-13 22:15:21,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand