./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-lit/fkp2013_variant-1.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_22aa6fb0-3cc4-4472-934c-eac388e16e8a/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22aa6fb0-3cc4-4472-934c-eac388e16e8a/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_22aa6fb0-3cc4-4472-934c-eac388e16e8a/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22aa6fb0-3cc4-4472-934c-eac388e16e8a/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-lit/fkp2013_variant-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22aa6fb0-3cc4-4472-934c-eac388e16e8a/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_22aa6fb0-3cc4-4472-934c-eac388e16e8a/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 6f1a33edf94ce8e584ad249b95ad5bb2102c6ab4d820eebd8874b39ecbf22785 --- 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 18:42:18,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:42:18,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:42:18,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:42:18,725 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:42:18,726 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:42:18,727 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:42:18,728 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:42:18,729 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:42:18,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:42:18,730 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:42:18,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:42:18,732 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:42:18,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:42:18,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:42:18,734 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:42:18,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:42:18,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:42:18,736 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:42:18,737 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:42:18,738 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:42:18,739 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:42:18,740 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:42:18,741 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:42:18,743 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:42:18,743 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:42:18,744 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:42:18,744 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:42:18,745 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:42:18,745 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:42:18,746 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:42:18,746 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:42:18,747 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:42:18,747 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:42:18,748 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:42:18,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:42:18,748 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:42:18,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:42:18,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:42:18,749 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:42:18,750 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:42:18,751 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22aa6fb0-3cc4-4472-934c-eac388e16e8a/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-12-13 18:42:18,765 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:42:18,765 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:42:18,766 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:42:18,766 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:42:18,766 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 18:42:18,766 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 18:42:18,767 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:42:18,767 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:42:18,767 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:42:18,767 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:42:18,767 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 18:42:18,767 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 18:42:18,768 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:42:18,768 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 18:42:18,768 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:42:18,768 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 18:42:18,768 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 18:42:18,768 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 18:42:18,768 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-13 18:42:18,768 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 18:42:18,768 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 18:42:18,769 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:42:18,769 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 18:42:18,769 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:42:18,769 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:42:18,769 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 18:42:18,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:42:18,769 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:42:18,769 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 18:42:18,770 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 18:42:18,770 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 18:42:18,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 18:42:18,770 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 18:42:18,770 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 18:42:18,770 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 18:42:18,770 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 18:42:18,770 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 18:42:18,770 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_22aa6fb0-3cc4-4472-934c-eac388e16e8a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22aa6fb0-3cc4-4472-934c-eac388e16e8a/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f1a33edf94ce8e584ad249b95ad5bb2102c6ab4d820eebd8874b39ecbf22785 [2022-12-13 18:42:18,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:42:18,970 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:42:18,972 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:42:18,973 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:42:18,974 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:42:18,975 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22aa6fb0-3cc4-4472-934c-eac388e16e8a/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-lit/fkp2013_variant-1.i [2022-12-13 18:42:21,481 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:42:21,658 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:42:21,659 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22aa6fb0-3cc4-4472-934c-eac388e16e8a/sv-benchmarks/c/pthread-lit/fkp2013_variant-1.i [2022-12-13 18:42:21,667 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22aa6fb0-3cc4-4472-934c-eac388e16e8a/bin/uautomizer-uyxdKDjOR8/data/3f88f2045/7e595702be9b4b9e9b42795142bcd59d/FLAG5a7741f03 [2022-12-13 18:42:22,056 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22aa6fb0-3cc4-4472-934c-eac388e16e8a/bin/uautomizer-uyxdKDjOR8/data/3f88f2045/7e595702be9b4b9e9b42795142bcd59d [2022-12-13 18:42:22,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:42:22,059 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:42:22,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:42:22,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:42:22,063 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:42:22,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:42:22" (1/1) ... [2022-12-13 18:42:22,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a21367c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:42:22, skipping insertion in model container [2022-12-13 18:42:22,064 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:42:22" (1/1) ... [2022-12-13 18:42:22,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:42:22,090 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:42:22,267 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_22aa6fb0-3cc4-4472-934c-eac388e16e8a/sv-benchmarks/c/pthread-lit/fkp2013_variant-1.i[30003,30016] [2022-12-13 18:42:22,281 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:42:22,287 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:42:22,309 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_22aa6fb0-3cc4-4472-934c-eac388e16e8a/sv-benchmarks/c/pthread-lit/fkp2013_variant-1.i[30003,30016] [2022-12-13 18:42:22,313 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:42:22,332 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:42:22,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:42:22 WrapperNode [2022-12-13 18:42:22,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:42:22,334 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:42:22,334 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:42:22,334 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:42:22,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:42:22" (1/1) ... [2022-12-13 18:42:22,347 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:42:22" (1/1) ... [2022-12-13 18:42:22,360 INFO L138 Inliner]: procedures = 172, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 80 [2022-12-13 18:42:22,361 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:42:22,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:42:22,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:42:22,361 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:42:22,367 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:42:22" (1/1) ... [2022-12-13 18:42:22,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:42:22" (1/1) ... [2022-12-13 18:42:22,369 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:42:22" (1/1) ... [2022-12-13 18:42:22,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:42:22" (1/1) ... [2022-12-13 18:42:22,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:42:22" (1/1) ... [2022-12-13 18:42:22,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:42:22" (1/1) ... [2022-12-13 18:42:22,375 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:42:22" (1/1) ... [2022-12-13 18:42:22,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:42:22" (1/1) ... [2022-12-13 18:42:22,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:42:22,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:42:22,379 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:42:22,379 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:42:22,379 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:42:22" (1/1) ... [2022-12-13 18:42:22,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:42:22,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22aa6fb0-3cc4-4472-934c-eac388e16e8a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:42:22,403 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22aa6fb0-3cc4-4472-934c-eac388e16e8a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 18:42:22,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22aa6fb0-3cc4-4472-934c-eac388e16e8a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 18:42:22,432 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-12-13 18:42:22,433 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-12-13 18:42:22,433 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-12-13 18:42:22,433 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-12-13 18:42:22,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 18:42:22,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 18:42:22,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 18:42:22,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 18:42:22,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 18:42:22,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:42:22,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:42:22,435 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 18:42:22,544 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:42:22,546 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:42:22,693 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:42:22,701 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:42:22,701 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 18:42:22,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:42:22 BoogieIcfgContainer [2022-12-13 18:42:22,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:42:22,706 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 18:42:22,706 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 18:42:22,709 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 18:42:22,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:42:22" (1/3) ... [2022-12-13 18:42:22,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1229fc2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:42:22, skipping insertion in model container [2022-12-13 18:42:22,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:42:22" (2/3) ... [2022-12-13 18:42:22,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1229fc2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:42:22, skipping insertion in model container [2022-12-13 18:42:22,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:42:22" (3/3) ... [2022-12-13 18:42:22,712 INFO L112 eAbstractionObserver]: Analyzing ICFG fkp2013_variant-1.i [2022-12-13 18:42:22,721 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 18:42:22,732 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 18:42:22,733 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-12-13 18:42:22,733 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 18:42:22,784 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 18:42:22,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 109 transitions, 228 flow [2022-12-13 18:42:22,869 INFO L130 PetriNetUnfolder]: 4/125 cut-off events. [2022-12-13 18:42:22,869 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:42:22,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 125 events. 4/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 165 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 89. Up to 4 conditions per place. [2022-12-13 18:42:22,874 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 109 transitions, 228 flow [2022-12-13 18:42:22,879 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 108 transitions, 224 flow [2022-12-13 18:42:22,882 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:42:22,892 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 111 places, 108 transitions, 224 flow [2022-12-13 18:42:22,894 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 111 places, 108 transitions, 224 flow [2022-12-13 18:42:22,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 108 transitions, 224 flow [2022-12-13 18:42:22,913 INFO L130 PetriNetUnfolder]: 4/125 cut-off events. [2022-12-13 18:42:22,913 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:42:22,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 125 events. 4/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 166 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 89. Up to 4 conditions per place. [2022-12-13 18:42:22,915 INFO L119 LiptonReduction]: Number of co-enabled transitions 2120 [2022-12-13 18:42:24,848 INFO L134 LiptonReduction]: Checked pairs total: 6324 [2022-12-13 18:42:24,849 INFO L136 LiptonReduction]: Total number of compositions: 108 [2022-12-13 18:42:24,859 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:42:24,864 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;@3cd2e2c8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:42:24,864 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-12-13 18:42:24,865 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 18:42:24,865 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:42:24,865 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:42:24,865 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 18:42:24,866 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2022-12-13 18:42:24,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:42:24,869 INFO L85 PathProgramCache]: Analyzing trace with hash 401, now seen corresponding path program 1 times [2022-12-13 18:42:24,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:42:24,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900343656] [2022-12-13 18:42:24,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:42:24,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:42:24,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:42:24,950 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 18:42:24,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:42:24,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900343656] [2022-12-13 18:42:24,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900343656] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:42:24,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:42:24,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 18:42:24,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179395268] [2022-12-13 18:42:24,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:42:24,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 18:42:24,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:42:24,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 18:42:24,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 18:42:24,975 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 217 [2022-12-13 18:42:24,976 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 66 flow. Second operand has 2 states, 2 states have (on average 103.5) internal successors, (207), 2 states have internal predecessors, (207), 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 18:42:24,976 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:42:24,976 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 217 [2022-12-13 18:42:24,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:42:25,037 INFO L130 PetriNetUnfolder]: 117/284 cut-off events. [2022-12-13 18:42:25,037 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 18:42:25,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 524 conditions, 284 events. 117/284 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1422 event pairs, 117 based on Foata normal form. 47/297 useless extension candidates. Maximal degree in co-relation 514. Up to 215 conditions per place. [2022-12-13 18:42:25,039 INFO L137 encePairwiseOnDemand]: 212/217 looper letters, 14 selfloop transitions, 0 changer transitions 0/24 dead transitions. [2022-12-13 18:42:25,040 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 24 transitions, 84 flow [2022-12-13 18:42:25,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 18:42:25,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 18:42:25,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 225 transitions. [2022-12-13 18:42:25,049 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5184331797235023 [2022-12-13 18:42:25,050 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 225 transitions. [2022-12-13 18:42:25,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 225 transitions. [2022-12-13 18:42:25,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:42:25,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 225 transitions. [2022-12-13 18:42:25,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 112.5) internal successors, (225), 2 states have internal predecessors, (225), 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 18:42:25,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 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 18:42:25,058 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 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 18:42:25,059 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 66 flow. Second operand 2 states and 225 transitions. [2022-12-13 18:42:25,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 24 transitions, 84 flow [2022-12-13 18:42:25,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 24 transitions, 83 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 18:42:25,062 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 55 flow [2022-12-13 18:42:25,064 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=55, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2022-12-13 18:42:25,067 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, -3 predicate places. [2022-12-13 18:42:25,067 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 55 flow [2022-12-13 18:42:25,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 103.5) internal successors, (207), 2 states have internal predecessors, (207), 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 18:42:25,067 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:42:25,067 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 18:42:25,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 18:42:25,067 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2022-12-13 18:42:25,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:42:25,068 INFO L85 PathProgramCache]: Analyzing trace with hash 12450843, now seen corresponding path program 1 times [2022-12-13 18:42:25,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:42:25,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838740574] [2022-12-13 18:42:25,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:42:25,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:42:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:42:25,136 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 18:42:25,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:42:25,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838740574] [2022-12-13 18:42:25,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838740574] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:42:25,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:42:25,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:42:25,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28937618] [2022-12-13 18:42:25,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:42:25,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:42:25,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:42:25,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:42:25,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:42:25,154 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 217 [2022-12-13 18:42:25,155 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 55 flow. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 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 18:42:25,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:42:25,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 217 [2022-12-13 18:42:25,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:42:25,224 INFO L130 PetriNetUnfolder]: 225/479 cut-off events. [2022-12-13 18:42:25,224 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 18:42:25,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 917 conditions, 479 events. 225/479 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2524 event pairs, 122 based on Foata normal form. 0/426 useless extension candidates. Maximal degree in co-relation 913. Up to 293 conditions per place. [2022-12-13 18:42:25,227 INFO L137 encePairwiseOnDemand]: 211/217 looper letters, 24 selfloop transitions, 4 changer transitions 0/34 dead transitions. [2022-12-13 18:42:25,227 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 34 transitions, 134 flow [2022-12-13 18:42:25,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:42:25,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:42:25,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 315 transitions. [2022-12-13 18:42:25,229 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4838709677419355 [2022-12-13 18:42:25,229 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 315 transitions. [2022-12-13 18:42:25,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 315 transitions. [2022-12-13 18:42:25,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:42:25,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 315 transitions. [2022-12-13 18:42:25,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 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 18:42:25,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 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 18:42:25,232 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 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 18:42:25,232 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 55 flow. Second operand 3 states and 315 transitions. [2022-12-13 18:42:25,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 34 transitions, 134 flow [2022-12-13 18:42:25,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 34 transitions, 134 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 18:42:25,234 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 83 flow [2022-12-13 18:42:25,234 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2022-12-13 18:42:25,234 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2022-12-13 18:42:25,234 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 83 flow [2022-12-13 18:42:25,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 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 18:42:25,235 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:42:25,235 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 18:42:25,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 18:42:25,235 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2022-12-13 18:42:25,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:42:25,235 INFO L85 PathProgramCache]: Analyzing trace with hash 386019563, now seen corresponding path program 1 times [2022-12-13 18:42:25,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:42:25,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275670488] [2022-12-13 18:42:25,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:42:25,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:42:25,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:42:25,276 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 18:42:25,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:42:25,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275670488] [2022-12-13 18:42:25,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275670488] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:42:25,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:42:25,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:42:25,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807606000] [2022-12-13 18:42:25,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:42:25,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:42:25,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:42:25,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:42:25,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:42:25,291 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 217 [2022-12-13 18:42:25,291 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 83 flow. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 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 18:42:25,291 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:42:25,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 217 [2022-12-13 18:42:25,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:42:25,356 INFO L130 PetriNetUnfolder]: 256/516 cut-off events. [2022-12-13 18:42:25,356 INFO L131 PetriNetUnfolder]: For 126/126 co-relation queries the response was YES. [2022-12-13 18:42:25,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1164 conditions, 516 events. 256/516 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2495 event pairs, 241 based on Foata normal form. 0/464 useless extension candidates. Maximal degree in co-relation 1158. Up to 452 conditions per place. [2022-12-13 18:42:25,360 INFO L137 encePairwiseOnDemand]: 214/217 looper letters, 17 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2022-12-13 18:42:25,360 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 24 transitions, 115 flow [2022-12-13 18:42:25,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:42:25,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:42:25,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2022-12-13 18:42:25,362 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45622119815668205 [2022-12-13 18:42:25,362 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2022-12-13 18:42:25,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2022-12-13 18:42:25,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:42:25,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2022-12-13 18:42:25,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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 18:42:25,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 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 18:42:25,364 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 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 18:42:25,364 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 83 flow. Second operand 3 states and 297 transitions. [2022-12-13 18:42:25,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 24 transitions, 115 flow [2022-12-13 18:42:25,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 24 transitions, 107 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:42:25,366 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 73 flow [2022-12-13 18:42:25,366 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2022-12-13 18:42:25,366 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, -2 predicate places. [2022-12-13 18:42:25,366 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 73 flow [2022-12-13 18:42:25,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 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 18:42:25,367 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:42:25,367 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 18:42:25,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 18:42:25,367 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2022-12-13 18:42:25,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:42:25,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1802568741, now seen corresponding path program 1 times [2022-12-13 18:42:25,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:42:25,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113751719] [2022-12-13 18:42:25,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:42:25,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:42:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:42:25,394 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:42:25,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:42:25,419 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 18:42:25,419 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 18:42:25,420 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2022-12-13 18:42:25,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (12 of 14 remaining) [2022-12-13 18:42:25,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (11 of 14 remaining) [2022-12-13 18:42:25,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 14 remaining) [2022-12-13 18:42:25,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 14 remaining) [2022-12-13 18:42:25,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 14 remaining) [2022-12-13 18:42:25,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (7 of 14 remaining) [2022-12-13 18:42:25,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (6 of 14 remaining) [2022-12-13 18:42:25,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (5 of 14 remaining) [2022-12-13 18:42:25,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 14 remaining) [2022-12-13 18:42:25,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (3 of 14 remaining) [2022-12-13 18:42:25,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (2 of 14 remaining) [2022-12-13 18:42:25,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 14 remaining) [2022-12-13 18:42:25,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 14 remaining) [2022-12-13 18:42:25,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 18:42:25,423 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-12-13 18:42:25,425 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 18:42:25,425 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 18:42:25,443 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 18:42:25,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 143 transitions, 310 flow [2022-12-13 18:42:25,458 INFO L130 PetriNetUnfolder]: 5/162 cut-off events. [2022-12-13 18:42:25,458 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 18:42:25,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 162 events. 5/162 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 240 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 171. Up to 6 conditions per place. [2022-12-13 18:42:25,459 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 143 transitions, 310 flow [2022-12-13 18:42:25,460 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 123 transitions, 261 flow [2022-12-13 18:42:25,460 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:42:25,460 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 128 places, 123 transitions, 261 flow [2022-12-13 18:42:25,460 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 128 places, 123 transitions, 261 flow [2022-12-13 18:42:25,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 123 transitions, 261 flow [2022-12-13 18:42:25,472 INFO L130 PetriNetUnfolder]: 5/162 cut-off events. [2022-12-13 18:42:25,472 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 18:42:25,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 162 events. 5/162 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 239 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 128. Up to 6 conditions per place. [2022-12-13 18:42:25,475 INFO L119 LiptonReduction]: Number of co-enabled transitions 3724 [2022-12-13 18:42:27,343 INFO L134 LiptonReduction]: Checked pairs total: 15031 [2022-12-13 18:42:27,343 INFO L136 LiptonReduction]: Total number of compositions: 114 [2022-12-13 18:42:27,344 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:42:27,345 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;@3cd2e2c8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:42:27,345 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-12-13 18:42:27,345 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 18:42:27,345 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:42:27,345 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:42:27,345 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 18:42:27,346 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-12-13 18:42:27,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:42:27,346 INFO L85 PathProgramCache]: Analyzing trace with hash 694, now seen corresponding path program 1 times [2022-12-13 18:42:27,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:42:27,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523956076] [2022-12-13 18:42:27,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:42:27,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:42:27,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:42:27,352 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 18:42:27,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:42:27,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523956076] [2022-12-13 18:42:27,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523956076] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:42:27,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:42:27,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 18:42:27,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805985475] [2022-12-13 18:42:27,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:42:27,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 18:42:27,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:42:27,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 18:42:27,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 18:42:27,353 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 257 [2022-12-13 18:42:27,354 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 93 flow. Second operand has 2 states, 2 states have (on average 133.5) internal successors, (267), 2 states have internal predecessors, (267), 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 18:42:27,354 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:42:27,354 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 257 [2022-12-13 18:42:27,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:42:27,457 INFO L130 PetriNetUnfolder]: 621/1333 cut-off events. [2022-12-13 18:42:27,457 INFO L131 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2022-12-13 18:42:27,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2378 conditions, 1333 events. 621/1333 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 8906 event pairs, 621 based on Foata normal form. 84/1233 useless extension candidates. Maximal degree in co-relation 2367. Up to 959 conditions per place. [2022-12-13 18:42:27,462 INFO L137 encePairwiseOnDemand]: 253/257 looper letters, 17 selfloop transitions, 0 changer transitions 0/35 dead transitions. [2022-12-13 18:42:27,462 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 35 transitions, 119 flow [2022-12-13 18:42:27,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 18:42:27,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 18:42:27,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 287 transitions. [2022-12-13 18:42:27,463 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5583657587548638 [2022-12-13 18:42:27,463 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 287 transitions. [2022-12-13 18:42:27,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 287 transitions. [2022-12-13 18:42:27,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:42:27,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 287 transitions. [2022-12-13 18:42:27,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 143.5) internal successors, (287), 2 states have internal predecessors, (287), 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 18:42:27,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 257.0) internal successors, (771), 3 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:42:27,466 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 257.0) internal successors, (771), 3 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:42:27,466 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 93 flow. Second operand 2 states and 287 transitions. [2022-12-13 18:42:27,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 35 transitions, 119 flow [2022-12-13 18:42:27,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 35 transitions, 116 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 18:42:27,467 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 82 flow [2022-12-13 18:42:27,467 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=82, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2022-12-13 18:42:27,467 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2022-12-13 18:42:27,467 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 82 flow [2022-12-13 18:42:27,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 133.5) internal successors, (267), 2 states have internal predecessors, (267), 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 18:42:27,468 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:42:27,468 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 18:42:27,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 18:42:27,468 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-12-13 18:42:27,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:42:27,468 INFO L85 PathProgramCache]: Analyzing trace with hash 21401601, now seen corresponding path program 1 times [2022-12-13 18:42:27,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:42:27,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017921769] [2022-12-13 18:42:27,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:42:27,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:42:27,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:42:27,501 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 18:42:27,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:42:27,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017921769] [2022-12-13 18:42:27,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017921769] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:42:27,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:42:27,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:42:27,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253676336] [2022-12-13 18:42:27,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:42:27,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:42:27,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:42:27,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:42:27,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:42:27,525 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 257 [2022-12-13 18:42:27,526 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 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 18:42:27,526 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:42:27,526 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 257 [2022-12-13 18:42:27,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:42:27,825 INFO L130 PetriNetUnfolder]: 2296/4256 cut-off events. [2022-12-13 18:42:27,826 INFO L131 PetriNetUnfolder]: For 78/78 co-relation queries the response was YES. [2022-12-13 18:42:27,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7915 conditions, 4256 events. 2296/4256 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 31331 event pairs, 901 based on Foata normal form. 0/3766 useless extension candidates. Maximal degree in co-relation 7910. Up to 2076 conditions per place. [2022-12-13 18:42:27,842 INFO L137 encePairwiseOnDemand]: 246/257 looper letters, 33 selfloop transitions, 8 changer transitions 0/53 dead transitions. [2022-12-13 18:42:27,842 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 53 transitions, 208 flow [2022-12-13 18:42:27,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:42:27,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:42:27,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 398 transitions. [2022-12-13 18:42:27,844 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.51621271076524 [2022-12-13 18:42:27,844 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 398 transitions. [2022-12-13 18:42:27,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 398 transitions. [2022-12-13 18:42:27,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:42:27,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 398 transitions. [2022-12-13 18:42:27,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 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 18:42:27,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 257.0) internal successors, (1028), 4 states have internal predecessors, (1028), 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 18:42:27,846 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 257.0) internal successors, (1028), 4 states have internal predecessors, (1028), 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 18:42:27,846 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 82 flow. Second operand 3 states and 398 transitions. [2022-12-13 18:42:27,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 53 transitions, 208 flow [2022-12-13 18:42:27,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 208 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 18:42:27,847 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 152 flow [2022-12-13 18:42:27,848 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2022-12-13 18:42:27,848 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 1 predicate places. [2022-12-13 18:42:27,848 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 152 flow [2022-12-13 18:42:27,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 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 18:42:27,849 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:42:27,849 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 18:42:27,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 18:42:27,849 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-12-13 18:42:27,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:42:27,849 INFO L85 PathProgramCache]: Analyzing trace with hash 663480788, now seen corresponding path program 1 times [2022-12-13 18:42:27,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:42:27,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384932454] [2022-12-13 18:42:27,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:42:27,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:42:27,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:42:27,874 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 18:42:27,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:42:27,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384932454] [2022-12-13 18:42:27,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384932454] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:42:27,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:42:27,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:42:27,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290386464] [2022-12-13 18:42:27,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:42:27,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:42:27,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:42:27,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:42:27,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:42:27,889 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 257 [2022-12-13 18:42:27,890 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 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 18:42:27,890 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:42:27,890 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 257 [2022-12-13 18:42:27,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:42:28,194 INFO L130 PetriNetUnfolder]: 2467/4688 cut-off events. [2022-12-13 18:42:28,194 INFO L131 PetriNetUnfolder]: For 2316/2355 co-relation queries the response was YES. [2022-12-13 18:42:28,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10842 conditions, 4688 events. 2467/4688 cut-off events. For 2316/2355 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 34983 event pairs, 1987 based on Foata normal form. 0/4196 useless extension candidates. Maximal degree in co-relation 10835. Up to 3438 conditions per place. [2022-12-13 18:42:28,216 INFO L137 encePairwiseOnDemand]: 254/257 looper letters, 23 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2022-12-13 18:42:28,216 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 41 transitions, 196 flow [2022-12-13 18:42:28,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:42:28,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:42:28,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 381 transitions. [2022-12-13 18:42:28,217 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49416342412451364 [2022-12-13 18:42:28,217 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 381 transitions. [2022-12-13 18:42:28,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 381 transitions. [2022-12-13 18:42:28,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:42:28,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 381 transitions. [2022-12-13 18:42:28,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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 18:42:28,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 257.0) internal successors, (1028), 4 states have internal predecessors, (1028), 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 18:42:28,220 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 257.0) internal successors, (1028), 4 states have internal predecessors, (1028), 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 18:42:28,220 INFO L175 Difference]: Start difference. First operand has 47 places, 43 transitions, 152 flow. Second operand 3 states and 381 transitions. [2022-12-13 18:42:28,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 41 transitions, 196 flow [2022-12-13 18:42:28,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 41 transitions, 180 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:42:28,232 INFO L231 Difference]: Finished difference. Result has 45 places, 41 transitions, 134 flow [2022-12-13 18:42:28,232 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=45, PETRI_TRANSITIONS=41} [2022-12-13 18:42:28,233 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -1 predicate places. [2022-12-13 18:42:28,233 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 41 transitions, 134 flow [2022-12-13 18:42:28,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 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 18:42:28,233 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:42:28,233 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:42:28,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 18:42:28,234 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr2Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-12-13 18:42:28,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:42:28,234 INFO L85 PathProgramCache]: Analyzing trace with hash -386392, now seen corresponding path program 1 times [2022-12-13 18:42:28,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:42:28,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908156945] [2022-12-13 18:42:28,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:42:28,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:42:28,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:42:28,300 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 18:42:28,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:42:28,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908156945] [2022-12-13 18:42:28,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908156945] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:42:28,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:42:28,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:42:28,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812703951] [2022-12-13 18:42:28,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:42:28,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:42:28,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:42:28,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:42:28,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:42:28,335 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 257 [2022-12-13 18:42:28,336 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 41 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 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 18:42:28,336 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:42:28,336 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 257 [2022-12-13 18:42:28,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:42:28,676 INFO L130 PetriNetUnfolder]: 2127/4103 cut-off events. [2022-12-13 18:42:28,676 INFO L131 PetriNetUnfolder]: For 871/923 co-relation queries the response was YES. [2022-12-13 18:42:28,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8724 conditions, 4103 events. 2127/4103 cut-off events. For 871/923 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 31527 event pairs, 1248 based on Foata normal form. 0/3415 useless extension candidates. Maximal degree in co-relation 8717. Up to 2555 conditions per place. [2022-12-13 18:42:28,693 INFO L137 encePairwiseOnDemand]: 251/257 looper letters, 28 selfloop transitions, 9 changer transitions 0/55 dead transitions. [2022-12-13 18:42:28,693 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 55 transitions, 253 flow [2022-12-13 18:42:28,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:42:28,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:42:28,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 396 transitions. [2022-12-13 18:42:28,695 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5136186770428015 [2022-12-13 18:42:28,695 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 396 transitions. [2022-12-13 18:42:28,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 396 transitions. [2022-12-13 18:42:28,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:42:28,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 396 transitions. [2022-12-13 18:42:28,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 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 18:42:28,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 257.0) internal successors, (1028), 4 states have internal predecessors, (1028), 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 18:42:28,697 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 257.0) internal successors, (1028), 4 states have internal predecessors, (1028), 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 18:42:28,697 INFO L175 Difference]: Start difference. First operand has 45 places, 41 transitions, 134 flow. Second operand 3 states and 396 transitions. [2022-12-13 18:42:28,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 55 transitions, 253 flow [2022-12-13 18:42:28,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 55 transitions, 252 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 18:42:28,699 INFO L231 Difference]: Finished difference. Result has 47 places, 48 transitions, 202 flow [2022-12-13 18:42:28,699 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=47, PETRI_TRANSITIONS=48} [2022-12-13 18:42:28,699 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 1 predicate places. [2022-12-13 18:42:28,699 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 48 transitions, 202 flow [2022-12-13 18:42:28,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 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 18:42:28,700 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:42:28,700 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:42:28,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 18:42:28,700 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-12-13 18:42:28,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:42:28,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1112734695, now seen corresponding path program 1 times [2022-12-13 18:42:28,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:42:28,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261538182] [2022-12-13 18:42:28,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:42:28,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:42:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:42:28,713 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:42:28,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:42:28,722 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 18:42:28,722 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 18:42:28,723 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (17 of 18 remaining) [2022-12-13 18:42:28,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2022-12-13 18:42:28,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2022-12-13 18:42:28,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2022-12-13 18:42:28,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2022-12-13 18:42:28,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining) [2022-12-13 18:42:28,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2022-12-13 18:42:28,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2022-12-13 18:42:28,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2022-12-13 18:42:28,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2022-12-13 18:42:28,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 18 remaining) [2022-12-13 18:42:28,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2022-12-13 18:42:28,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2022-12-13 18:42:28,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2022-12-13 18:42:28,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2022-12-13 18:42:28,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2022-12-13 18:42:28,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2022-12-13 18:42:28,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2022-12-13 18:42:28,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 18:42:28,725 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-12-13 18:42:28,729 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2022-12-13 18:42:28,729 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 18:42:28,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 06:42:28 BasicIcfg [2022-12-13 18:42:28,766 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 18:42:28,766 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 18:42:28,766 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 18:42:28,767 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 18:42:28,767 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:42:22" (3/4) ... [2022-12-13 18:42:28,769 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 18:42:28,769 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 18:42:28,770 INFO L158 Benchmark]: Toolchain (without parser) took 6710.29ms. Allocated memory was 146.8MB in the beginning and 262.1MB in the end (delta: 115.3MB). Free memory was 111.6MB in the beginning and 179.8MB in the end (delta: -68.2MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2022-12-13 18:42:28,770 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 146.8MB. Free memory is still 120.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 18:42:28,770 INFO L158 Benchmark]: CACSL2BoogieTranslator took 273.05ms. Allocated memory is still 146.8MB. Free memory was 111.2MB in the beginning and 91.8MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-13 18:42:28,770 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.18ms. Allocated memory is still 146.8MB. Free memory was 91.8MB in the beginning and 89.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 18:42:28,770 INFO L158 Benchmark]: Boogie Preprocessor took 16.74ms. Allocated memory is still 146.8MB. Free memory was 89.6MB in the beginning and 88.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 18:42:28,771 INFO L158 Benchmark]: RCFGBuilder took 324.92ms. Allocated memory is still 146.8MB. Free memory was 88.1MB in the beginning and 74.6MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 18:42:28,771 INFO L158 Benchmark]: TraceAbstraction took 6060.08ms. Allocated memory was 146.8MB in the beginning and 262.1MB in the end (delta: 115.3MB). Free memory was 73.9MB in the beginning and 179.8MB in the end (delta: -105.9MB). Peak memory consumption was 65.0MB. Max. memory is 16.1GB. [2022-12-13 18:42:28,771 INFO L158 Benchmark]: Witness Printer took 2.79ms. Allocated memory is still 262.1MB. Free memory is still 179.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 18:42:28,773 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 146.8MB. Free memory is still 120.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 273.05ms. Allocated memory is still 146.8MB. Free memory was 111.2MB in the beginning and 91.8MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.18ms. Allocated memory is still 146.8MB. Free memory was 91.8MB in the beginning and 89.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.74ms. Allocated memory is still 146.8MB. Free memory was 89.6MB in the beginning and 88.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 324.92ms. Allocated memory is still 146.8MB. Free memory was 88.1MB in the beginning and 74.6MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6060.08ms. Allocated memory was 146.8MB in the beginning and 262.1MB in the end (delta: 115.3MB). Free memory was 73.9MB in the beginning and 179.8MB in the end (delta: -105.9MB). Peak memory consumption was 65.0MB. Max. memory is 16.1GB. * Witness Printer took 2.79ms. Allocated memory is still 262.1MB. Free memory is still 179.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 111 PlacesBefore, 33 PlacesAfterwards, 108 TransitionsBefore, 29 TransitionsAfterwards, 2120 CoEnabledTransitionPairs, 7 FixpointIterations, 59 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 108 TotalNumberOfCompositions, 6324 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3427, independent: 3180, independent conditional: 0, independent unconditional: 3180, dependent: 247, dependent conditional: 0, dependent unconditional: 247, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1236, independent: 1201, independent conditional: 0, independent unconditional: 1201, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3427, independent: 1979, independent conditional: 0, independent unconditional: 1979, dependent: 212, dependent conditional: 0, dependent unconditional: 212, unknown: 1236, unknown conditional: 0, unknown unconditional: 1236] , Statistics on independence cache: Total cache size (in pairs): 129, Positive cache size: 111, Positive conditional cache size: 0, Positive unconditional cache size: 111, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 128 PlacesBefore, 46 PlacesAfterwards, 123 TransitionsBefore, 39 TransitionsAfterwards, 3724 CoEnabledTransitionPairs, 8 FixpointIterations, 62 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 114 TotalNumberOfCompositions, 15031 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6570, independent: 6153, independent conditional: 0, independent unconditional: 6153, dependent: 417, dependent conditional: 0, dependent unconditional: 417, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2045, independent: 1994, independent conditional: 0, independent unconditional: 1994, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6570, independent: 4159, independent conditional: 0, independent unconditional: 4159, dependent: 366, dependent conditional: 0, dependent unconditional: 366, unknown: 2045, unknown conditional: 0, unknown unconditional: 2045] , Statistics on independence cache: Total cache size (in pairs): 259, Positive cache size: 233, Positive conditional cache size: 0, Positive unconditional cache size: 233, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - DataRaceFoundResult [Line: 700]: Data race detected Data race detected The following path leads to a data race: [L697] 0 volatile int x; [L698] 0 volatile int n; [L710] 0 pthread_t t1, t2; [L711] 0 int i; [L712] 0 x = 0 [L713] 0 n = __VERIFIER_nondet_int() [L714] EXPR 0 n > 0 [L714] CALL 0 assume_abort_if_not(n > 0) [L686] COND FALSE 0 !(!cond) [L714] RET 0 assume_abort_if_not(n > 0) [L715] FCALL, FORK 0 pthread_create(&t1, 0, thr1, 0) VAL [\old(argc)=49, argc=49, argv={50:51}, argv={50:51}, n=1, pthread_create(&t1, 0, thr1, 0)=-2, t1={3:0}, t2={5:0}, x=0] [L716] 0 i = 0 VAL [\old(argc)=49, argc=49, argv={50:51}, argv={50:51}, i=0, n=1, t1={3:0}, t2={5:0}, x=0] [L716] 0 i < n [L716] COND TRUE 0 i < n [L700] 1 x <= n VAL [arg={0:0}, arg={0:0}, n=1, x=0] [L717] FCALL, FORK 0 pthread_create(&t2, 0, thr2, 0) VAL [\old(argc)=49, arg={0:0}, argc=49, argv={50:51}, argv={50:51}, i=0, n=1, pthread_create(&t2, 0, thr2, 0)=-1, t1={3:0}, t2={5:0}, x=0] [L704] 2 int t; [L705] 2 t = x VAL [arg={0:0}, arg={0:0}, n=1, t=0, x=0] [L706] 2 x = t + 1 VAL [arg={0:0}, arg={0:0}, n=1, t=0, x=1, x = t + 1=52] [L700] 1 x <= n VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, n=1, t=0, x=1, x = t + 1=52] Now there is a data race on ~x~0 between C: x = t + 1 [706] and C: x <= n [700] - UnprovableResult [Line: 705]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 706]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 712]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 716]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 715]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 717]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 141 locations, 14 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.6s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 61 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 35 mSDsluCounter, 5 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 81 IncrementalHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 5 mSDtfsCounter, 81 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83occurred in iteration=2, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 7 procedures, 174 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.3s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 167 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 66 mSDsluCounter, 47 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 192 IncrementalHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 47 mSDtfsCounter, 192 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=202occurred in iteration=4, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 24 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-12-13 18:42:28,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22aa6fb0-3cc4-4472-934c-eac388e16e8a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE