./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39fb21d9-befd-44e5-a280-8236fe96f8c6/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39fb21d9-befd-44e5-a280-8236fe96f8c6/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_39fb21d9-befd-44e5-a280-8236fe96f8c6/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39fb21d9-befd-44e5-a280-8236fe96f8c6/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39fb21d9-befd-44e5-a280-8236fe96f8c6/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_39fb21d9-befd-44e5-a280-8236fe96f8c6/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 7cd6aaa75855c8ee03a174376352b142cf57dd56532b968b1b6c916585172927 --- 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 19:52:30,955 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:52:30,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:52:30,974 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:52:30,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:52:30,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:52:30,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:52:30,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:52:30,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:52:30,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:52:30,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:52:30,982 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:52:30,982 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:52:30,983 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:52:30,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:52:30,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:52:30,985 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:52:30,986 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:52:30,988 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:52:30,989 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:52:30,990 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:52:30,992 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:52:30,993 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:52:30,993 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:52:30,996 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:52:30,997 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:52:30,997 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:52:30,998 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:52:30,998 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:52:30,999 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:52:30,999 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:52:31,000 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:52:31,001 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:52:31,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:52:31,002 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:52:31,002 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:52:31,003 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:52:31,003 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:52:31,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:52:31,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:52:31,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:52:31,007 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39fb21d9-befd-44e5-a280-8236fe96f8c6/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-12-13 19:52:31,025 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:52:31,025 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:52:31,026 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:52:31,026 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:52:31,026 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:52:31,026 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:52:31,027 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:52:31,027 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:52:31,027 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:52:31,028 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:52:31,028 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 19:52:31,028 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 19:52:31,028 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:52:31,028 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 19:52:31,028 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:52:31,029 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 19:52:31,029 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:52:31,029 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 19:52:31,029 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-13 19:52:31,029 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 19:52:31,029 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:52:31,029 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:52:31,030 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 19:52:31,030 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:52:31,030 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:52:31,030 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:52:31,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:52:31,030 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:52:31,031 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:52:31,031 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 19:52:31,031 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:52:31,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 19:52:31,031 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:52:31,031 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 19:52:31,031 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:52:31,032 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:52:31,032 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:52:31,032 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_39fb21d9-befd-44e5-a280-8236fe96f8c6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39fb21d9-befd-44e5-a280-8236fe96f8c6/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cd6aaa75855c8ee03a174376352b142cf57dd56532b968b1b6c916585172927 [2022-12-13 19:52:31,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:52:31,243 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:52:31,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:52:31,246 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:52:31,247 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:52:31,247 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39fb21d9-befd-44e5-a280-8236fe96f8c6/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i [2022-12-13 19:52:33,741 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:52:33,959 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:52:33,959 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39fb21d9-befd-44e5-a280-8236fe96f8c6/sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i [2022-12-13 19:52:33,971 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39fb21d9-befd-44e5-a280-8236fe96f8c6/bin/uautomizer-uyxdKDjOR8/data/f591eb684/10959aa67fcf46c7b050e5829a24757e/FLAGf21e03ec4 [2022-12-13 19:52:34,334 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39fb21d9-befd-44e5-a280-8236fe96f8c6/bin/uautomizer-uyxdKDjOR8/data/f591eb684/10959aa67fcf46c7b050e5829a24757e [2022-12-13 19:52:34,339 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:52:34,341 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:52:34,343 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:52:34,344 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:52:34,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:52:34,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:52:34" (1/1) ... [2022-12-13 19:52:34,350 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a332502 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:52:34, skipping insertion in model container [2022-12-13 19:52:34,350 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:52:34" (1/1) ... [2022-12-13 19:52:34,357 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:52:34,385 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:52:34,575 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_39fb21d9-befd-44e5-a280-8236fe96f8c6/sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i[30176,30189] [2022-12-13 19:52:34,599 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:52:34,610 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:52:34,645 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_39fb21d9-befd-44e5-a280-8236fe96f8c6/sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i[30176,30189] [2022-12-13 19:52:34,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:52:34,690 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:52:34,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:52:34 WrapperNode [2022-12-13 19:52:34,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:52:34,692 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:52:34,692 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:52:34,692 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:52:34,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:52:34" (1/1) ... [2022-12-13 19:52:34,711 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:52:34" (1/1) ... [2022-12-13 19:52:34,729 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 94 [2022-12-13 19:52:34,730 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:52:34,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:52:34,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:52:34,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:52:34,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:52:34" (1/1) ... [2022-12-13 19:52:34,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:52:34" (1/1) ... [2022-12-13 19:52:34,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:52:34" (1/1) ... [2022-12-13 19:52:34,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:52:34" (1/1) ... [2022-12-13 19:52:34,756 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:52:34" (1/1) ... [2022-12-13 19:52:34,761 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:52:34" (1/1) ... [2022-12-13 19:52:34,763 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:52:34" (1/1) ... [2022-12-13 19:52:34,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:52:34" (1/1) ... [2022-12-13 19:52:34,767 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:52:34,768 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:52:34,768 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:52:34,768 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:52:34,769 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:52:34" (1/1) ... [2022-12-13 19:52:34,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:52:34,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39fb21d9-befd-44e5-a280-8236fe96f8c6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:52:34,799 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39fb21d9-befd-44e5-a280-8236fe96f8c6/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:52:34,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39fb21d9-befd-44e5-a280-8236fe96f8c6/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:52:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 19:52:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 19:52:34,837 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 19:52:34,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:52:34,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 19:52:34,837 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 19:52:34,837 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 19:52:34,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 19:52:34,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 19:52:34,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:52:34,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:52:34,839 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 19:52:34,933 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:52:34,935 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:52:35,154 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:52:35,159 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:52:35,159 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-12-13 19:52:35,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:52:35 BoogieIcfgContainer [2022-12-13 19:52:35,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:52:35,163 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:52:35,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:52:35,165 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:52:35,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:52:34" (1/3) ... [2022-12-13 19:52:35,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b440165 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:52:35, skipping insertion in model container [2022-12-13 19:52:35,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:52:34" (2/3) ... [2022-12-13 19:52:35,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b440165 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:52:35, skipping insertion in model container [2022-12-13 19:52:35,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:52:35" (3/3) ... [2022-12-13 19:52:35,168 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_12-ptr_racefree.i [2022-12-13 19:52:35,174 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 19:52:35,190 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:52:35,190 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-12-13 19:52:35,190 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 19:52:35,259 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 19:52:35,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 162 transitions, 332 flow [2022-12-13 19:52:35,342 INFO L130 PetriNetUnfolder]: 17/211 cut-off events. [2022-12-13 19:52:35,342 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 19:52:35,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 211 events. 17/211 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 623 event pairs, 0 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 115. Up to 4 conditions per place. [2022-12-13 19:52:35,347 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 162 transitions, 332 flow [2022-12-13 19:52:35,351 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 153 places, 162 transitions, 332 flow [2022-12-13 19:52:35,354 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 19:52:35,362 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 153 places, 162 transitions, 332 flow [2022-12-13 19:52:35,364 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 153 places, 162 transitions, 332 flow [2022-12-13 19:52:35,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 162 transitions, 332 flow [2022-12-13 19:52:35,397 INFO L130 PetriNetUnfolder]: 17/211 cut-off events. [2022-12-13 19:52:35,397 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 19:52:35,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 211 events. 17/211 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 623 event pairs, 0 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 115. Up to 4 conditions per place. [2022-12-13 19:52:35,400 INFO L119 LiptonReduction]: Number of co-enabled transitions 6710 [2022-12-13 19:52:37,793 INFO L134 LiptonReduction]: Checked pairs total: 26138 [2022-12-13 19:52:37,794 INFO L136 LiptonReduction]: Total number of compositions: 106 [2022-12-13 19:52:37,804 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:52:37,808 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;@2c40bc4c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:52:37,808 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-12-13 19:52:37,812 INFO L130 PetriNetUnfolder]: 0/23 cut-off events. [2022-12-13 19:52:37,812 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 19:52:37,812 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:52:37,812 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 19:52:37,813 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-12-13 19:52:37,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:52:37,816 INFO L85 PathProgramCache]: Analyzing trace with hash -200291664, now seen corresponding path program 1 times [2022-12-13 19:52:37,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:52:37,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410961530] [2022-12-13 19:52:37,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:52:37,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:52:37,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:52:37,904 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:52:37,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:52:37,933 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:52:37,935 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 19:52:37,935 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-12-13 19:52:37,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2022-12-13 19:52:37,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2022-12-13 19:52:37,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2022-12-13 19:52:37,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2022-12-13 19:52:37,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2022-12-13 19:52:37,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2022-12-13 19:52:37,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2022-12-13 19:52:37,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2022-12-13 19:52:37,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2022-12-13 19:52:37,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2022-12-13 19:52:37,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 19:52:37,939 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-13 19:52:37,942 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 19:52:37,942 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 19:52:37,972 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 19:52:37,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 225 transitions, 468 flow [2022-12-13 19:52:38,019 INFO L130 PetriNetUnfolder]: 31/354 cut-off events. [2022-12-13 19:52:38,019 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 19:52:38,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 368 conditions, 354 events. 31/354 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1344 event pairs, 0 based on Foata normal form. 0/304 useless extension candidates. Maximal degree in co-relation 213. Up to 8 conditions per place. [2022-12-13 19:52:38,026 INFO L82 GeneralOperation]: Start removeDead. Operand has 211 places, 225 transitions, 468 flow [2022-12-13 19:52:38,028 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 211 places, 225 transitions, 468 flow [2022-12-13 19:52:38,028 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 19:52:38,028 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 211 places, 225 transitions, 468 flow [2022-12-13 19:52:38,029 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 211 places, 225 transitions, 468 flow [2022-12-13 19:52:38,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 225 transitions, 468 flow [2022-12-13 19:52:38,063 INFO L130 PetriNetUnfolder]: 31/354 cut-off events. [2022-12-13 19:52:38,064 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 19:52:38,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 368 conditions, 354 events. 31/354 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1344 event pairs, 0 based on Foata normal form. 0/304 useless extension candidates. Maximal degree in co-relation 213. Up to 8 conditions per place. [2022-12-13 19:52:38,074 INFO L119 LiptonReduction]: Number of co-enabled transitions 22204 [2022-12-13 19:52:40,351 INFO L134 LiptonReduction]: Checked pairs total: 112630 [2022-12-13 19:52:40,351 INFO L136 LiptonReduction]: Total number of compositions: 131 [2022-12-13 19:52:40,353 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:52:40,353 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;@2c40bc4c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:52:40,354 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-12-13 19:52:40,359 INFO L130 PetriNetUnfolder]: 2/41 cut-off events. [2022-12-13 19:52:40,359 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 19:52:40,359 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:52:40,359 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:52:40,359 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-12-13 19:52:40,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:52:40,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1853184166, now seen corresponding path program 1 times [2022-12-13 19:52:40,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:52:40,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853642350] [2022-12-13 19:52:40,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:52:40,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:52:40,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:52:40,474 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 19:52:40,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:52:40,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853642350] [2022-12-13 19:52:40,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853642350] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:52:40,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:52:40,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:52:40,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665421531] [2022-12-13 19:52:40,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:52:40,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:52:40,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:52:40,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:52:40,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:52:40,515 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 356 [2022-12-13 19:52:40,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 114 transitions, 246 flow. Second operand has 3 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 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 19:52:40,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:52:40,518 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 356 [2022-12-13 19:52:40,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:52:41,389 INFO L130 PetriNetUnfolder]: 3146/8037 cut-off events. [2022-12-13 19:52:41,389 INFO L131 PetriNetUnfolder]: For 69/69 co-relation queries the response was YES. [2022-12-13 19:52:41,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13155 conditions, 8037 events. 3146/8037 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 70758 event pairs, 2981 based on Foata normal form. 691/8155 useless extension candidates. Maximal degree in co-relation 9353. Up to 5023 conditions per place. [2022-12-13 19:52:41,435 INFO L137 encePairwiseOnDemand]: 339/356 looper letters, 51 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2022-12-13 19:52:41,435 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 114 transitions, 352 flow [2022-12-13 19:52:41,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:52:41,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:52:41,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 671 transitions. [2022-12-13 19:52:41,450 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6282771535580525 [2022-12-13 19:52:41,450 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 671 transitions. [2022-12-13 19:52:41,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 671 transitions. [2022-12-13 19:52:41,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:52:41,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 671 transitions. [2022-12-13 19:52:41,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 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 19:52:41,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 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 19:52:41,469 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 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 19:52:41,471 INFO L175 Difference]: Start difference. First operand has 103 places, 114 transitions, 246 flow. Second operand 3 states and 671 transitions. [2022-12-13 19:52:41,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 114 transitions, 352 flow [2022-12-13 19:52:41,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 114 transitions, 352 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 19:52:41,478 INFO L231 Difference]: Finished difference. Result has 106 places, 101 transitions, 230 flow [2022-12-13 19:52:41,479 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=106, PETRI_TRANSITIONS=101} [2022-12-13 19:52:41,483 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, 3 predicate places. [2022-12-13 19:52:41,483 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 101 transitions, 230 flow [2022-12-13 19:52:41,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 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 19:52:41,484 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:52:41,484 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-13 19:52:41,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 19:52:41,484 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-12-13 19:52:41,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:52:41,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1565121627, now seen corresponding path program 1 times [2022-12-13 19:52:41,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:52:41,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238862499] [2022-12-13 19:52:41,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:52:41,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:52:41,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:52:41,508 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:52:41,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:52:41,530 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:52:41,530 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 19:52:41,531 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2022-12-13 19:52:41,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2022-12-13 19:52:41,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2022-12-13 19:52:41,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2022-12-13 19:52:41,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2022-12-13 19:52:41,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2022-12-13 19:52:41,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2022-12-13 19:52:41,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2022-12-13 19:52:41,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2022-12-13 19:52:41,533 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2022-12-13 19:52:41,533 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2022-12-13 19:52:41,533 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2022-12-13 19:52:41,533 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2022-12-13 19:52:41,533 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2022-12-13 19:52:41,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2022-12-13 19:52:41,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 19:52:41,534 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 19:52:41,535 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 19:52:41,535 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 19:52:41,565 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 19:52:41,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 269 places, 288 transitions, 606 flow [2022-12-13 19:52:41,656 INFO L130 PetriNetUnfolder]: 50/542 cut-off events. [2022-12-13 19:52:41,656 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 19:52:41,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 570 conditions, 542 events. 50/542 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2318 event pairs, 1 based on Foata normal form. 0/464 useless extension candidates. Maximal degree in co-relation 362. Up to 16 conditions per place. [2022-12-13 19:52:41,659 INFO L82 GeneralOperation]: Start removeDead. Operand has 269 places, 288 transitions, 606 flow [2022-12-13 19:52:41,663 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 269 places, 288 transitions, 606 flow [2022-12-13 19:52:41,663 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 19:52:41,663 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 269 places, 288 transitions, 606 flow [2022-12-13 19:52:41,663 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 269 places, 288 transitions, 606 flow [2022-12-13 19:52:41,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 269 places, 288 transitions, 606 flow [2022-12-13 19:52:41,719 INFO L130 PetriNetUnfolder]: 50/542 cut-off events. [2022-12-13 19:52:41,719 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 19:52:41,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 570 conditions, 542 events. 50/542 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2318 event pairs, 1 based on Foata normal form. 0/464 useless extension candidates. Maximal degree in co-relation 362. Up to 16 conditions per place. [2022-12-13 19:52:41,744 INFO L119 LiptonReduction]: Number of co-enabled transitions 45018 [2022-12-13 19:52:44,188 INFO L134 LiptonReduction]: Checked pairs total: 214656 [2022-12-13 19:52:44,188 INFO L136 LiptonReduction]: Total number of compositions: 156 [2022-12-13 19:52:44,191 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:52:44,191 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;@2c40bc4c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:52:44,192 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-12-13 19:52:44,194 INFO L130 PetriNetUnfolder]: 2/48 cut-off events. [2022-12-13 19:52:44,194 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 19:52:44,194 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:52:44,194 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:52:44,195 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 19:52:44,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:52:44,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1642850782, now seen corresponding path program 1 times [2022-12-13 19:52:44,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:52:44,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746339267] [2022-12-13 19:52:44,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:52:44,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:52:44,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:52:44,227 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 19:52:44,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:52:44,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746339267] [2022-12-13 19:52:44,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746339267] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:52:44,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:52:44,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:52:44,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140638835] [2022-12-13 19:52:44,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:52:44,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:52:44,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:52:44,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:52:44,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:52:44,239 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 444 [2022-12-13 19:52:44,240 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 157 transitions, 344 flow. Second operand has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 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 19:52:44,240 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:52:44,240 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 444 [2022-12-13 19:52:44,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:52:55,459 INFO L130 PetriNetUnfolder]: 65023/129201 cut-off events. [2022-12-13 19:52:55,459 INFO L131 PetriNetUnfolder]: For 2286/2286 co-relation queries the response was YES. [2022-12-13 19:52:55,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221202 conditions, 129201 events. 65023/129201 cut-off events. For 2286/2286 co-relation queries the response was YES. Maximal size of possible extension queue 2695. Compared 1452520 event pairs, 42073 based on Foata normal form. 11159/130944 useless extension candidates. Maximal degree in co-relation 13354. Up to 90443 conditions per place. [2022-12-13 19:52:56,153 INFO L137 encePairwiseOnDemand]: 421/444 looper letters, 65 selfloop transitions, 2 changer transitions 0/151 dead transitions. [2022-12-13 19:52:56,153 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 151 transitions, 466 flow [2022-12-13 19:52:56,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:52:56,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:52:56,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 856 transitions. [2022-12-13 19:52:56,156 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6426426426426426 [2022-12-13 19:52:56,156 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 856 transitions. [2022-12-13 19:52:56,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 856 transitions. [2022-12-13 19:52:56,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:52:56,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 856 transitions. [2022-12-13 19:52:56,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 285.3333333333333) internal successors, (856), 3 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:52:56,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 444.0) internal successors, (1776), 4 states have internal predecessors, (1776), 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 19:52:56,166 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 444.0) internal successors, (1776), 4 states have internal predecessors, (1776), 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 19:52:56,166 INFO L175 Difference]: Start difference. First operand has 141 places, 157 transitions, 344 flow. Second operand 3 states and 856 transitions. [2022-12-13 19:52:56,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 151 transitions, 466 flow [2022-12-13 19:52:56,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 151 transitions, 466 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 19:52:56,172 INFO L231 Difference]: Finished difference. Result has 144 places, 138 transitions, 316 flow [2022-12-13 19:52:56,172 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=444, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=316, PETRI_PLACES=144, PETRI_TRANSITIONS=138} [2022-12-13 19:52:56,173 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 3 predicate places. [2022-12-13 19:52:56,173 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 138 transitions, 316 flow [2022-12-13 19:52:56,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 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 19:52:56,174 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:52:56,174 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:52:56,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 19:52:56,174 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 19:52:56,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:52:56,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1284210263, now seen corresponding path program 1 times [2022-12-13 19:52:56,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:52:56,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622786268] [2022-12-13 19:52:56,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:52:56,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:52:56,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:52:56,459 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 19:52:56,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:52:56,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622786268] [2022-12-13 19:52:56,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622786268] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:52:56,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:52:56,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:52:56,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930385296] [2022-12-13 19:52:56,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:52:56,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:52:56,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:52:56,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:52:56,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:52:56,891 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 444 [2022-12-13 19:52:56,893 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 138 transitions, 316 flow. Second operand has 6 states, 6 states have (on average 220.66666666666666) internal successors, (1324), 6 states have internal predecessors, (1324), 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 19:52:56,893 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:52:56,893 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 444 [2022-12-13 19:52:56,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:53:48,426 INFO L130 PetriNetUnfolder]: 450635/677791 cut-off events. [2022-12-13 19:53:48,426 INFO L131 PetriNetUnfolder]: For 40770/40770 co-relation queries the response was YES. [2022-12-13 19:53:49,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1332860 conditions, 677791 events. 450635/677791 cut-off events. For 40770/40770 co-relation queries the response was YES. Maximal size of possible extension queue 10854. Compared 6317650 event pairs, 274655 based on Foata normal form. 0/645894 useless extension candidates. Maximal degree in co-relation 1332666. Up to 472980 conditions per place. [2022-12-13 19:53:51,992 INFO L137 encePairwiseOnDemand]: 414/444 looper letters, 224 selfloop transitions, 76 changer transitions 0/354 dead transitions. [2022-12-13 19:53:51,993 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 354 transitions, 1448 flow [2022-12-13 19:53:51,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:53:51,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 19:53:51,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1611 transitions. [2022-12-13 19:53:51,996 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6047297297297297 [2022-12-13 19:53:51,996 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1611 transitions. [2022-12-13 19:53:51,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1611 transitions. [2022-12-13 19:53:51,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:53:51,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1611 transitions. [2022-12-13 19:53:52,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 268.5) internal successors, (1611), 6 states have internal predecessors, (1611), 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 19:53:52,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 444.0) internal successors, (3108), 7 states have internal predecessors, (3108), 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 19:53:52,004 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 444.0) internal successors, (3108), 7 states have internal predecessors, (3108), 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 19:53:52,004 INFO L175 Difference]: Start difference. First operand has 144 places, 138 transitions, 316 flow. Second operand 6 states and 1611 transitions. [2022-12-13 19:53:52,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 354 transitions, 1448 flow [2022-12-13 19:53:52,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 354 transitions, 1442 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:53:52,026 INFO L231 Difference]: Finished difference. Result has 153 places, 212 transitions, 822 flow [2022-12-13 19:53:52,027 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=444, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=822, PETRI_PLACES=153, PETRI_TRANSITIONS=212} [2022-12-13 19:53:52,027 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 12 predicate places. [2022-12-13 19:53:52,028 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 212 transitions, 822 flow [2022-12-13 19:53:52,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 220.66666666666666) internal successors, (1324), 6 states have internal predecessors, (1324), 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 19:53:52,028 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:53:52,028 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:53:52,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 19:53:52,029 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 19:53:52,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:53:52,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1594081506, now seen corresponding path program 1 times [2022-12-13 19:53:52,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:53:52,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992490474] [2022-12-13 19:53:52,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:53:52,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:53:52,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:53:52,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:53:52,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:53:52,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992490474] [2022-12-13 19:53:52,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992490474] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:53:52,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240027785] [2022-12-13 19:53:52,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:53:52,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:53:52,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39fb21d9-befd-44e5-a280-8236fe96f8c6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:53:52,067 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39fb21d9-befd-44e5-a280-8236fe96f8c6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:53:52,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39fb21d9-befd-44e5-a280-8236fe96f8c6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 19:53:52,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:53:52,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:53:52,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:53:52,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:53:52,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:53:52,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:53:52,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240027785] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:53:52,180 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:53:52,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 19:53:52,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998139098] [2022-12-13 19:53:52,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:53:52,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:53:52,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:53:52,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:53:52,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:53:52,201 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 444 [2022-12-13 19:53:52,203 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 212 transitions, 822 flow. Second operand has 7 states, 7 states have (on average 255.14285714285714) internal successors, (1786), 7 states have internal predecessors, (1786), 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 19:53:52,203 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:53:52,203 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 444 [2022-12-13 19:53:52,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:54:00,442 INFO L130 PetriNetUnfolder]: 50096/97981 cut-off events. [2022-12-13 19:54:00,442 INFO L131 PetriNetUnfolder]: For 46717/50977 co-relation queries the response was YES. [2022-12-13 19:54:00,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220404 conditions, 97981 events. 50096/97981 cut-off events. For 46717/50977 co-relation queries the response was YES. Maximal size of possible extension queue 2125. Compared 1044396 event pairs, 8766 based on Foata normal form. 6313/99336 useless extension candidates. Maximal degree in co-relation 58663. Up to 42084 conditions per place. [2022-12-13 19:54:01,018 INFO L137 encePairwiseOnDemand]: 441/444 looper letters, 161 selfloop transitions, 4 changer transitions 0/292 dead transitions. [2022-12-13 19:54:01,018 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 292 transitions, 1441 flow [2022-12-13 19:54:01,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:54:01,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 19:54:01,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1640 transitions. [2022-12-13 19:54:01,021 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6156156156156156 [2022-12-13 19:54:01,021 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1640 transitions. [2022-12-13 19:54:01,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1640 transitions. [2022-12-13 19:54:01,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:54:01,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1640 transitions. [2022-12-13 19:54:01,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 273.3333333333333) internal successors, (1640), 6 states have internal predecessors, (1640), 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 19:54:01,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 444.0) internal successors, (3108), 7 states have internal predecessors, (3108), 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 19:54:01,029 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 444.0) internal successors, (3108), 7 states have internal predecessors, (3108), 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 19:54:01,029 INFO L175 Difference]: Start difference. First operand has 153 places, 212 transitions, 822 flow. Second operand 6 states and 1640 transitions. [2022-12-13 19:54:01,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 292 transitions, 1441 flow [2022-12-13 19:54:01,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 292 transitions, 1435 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-12-13 19:54:01,292 INFO L231 Difference]: Finished difference. Result has 137 places, 189 transitions, 769 flow [2022-12-13 19:54:01,292 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=444, PETRI_DIFFERENCE_MINUEND_FLOW=757, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=769, PETRI_PLACES=137, PETRI_TRANSITIONS=189} [2022-12-13 19:54:01,292 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, -4 predicate places. [2022-12-13 19:54:01,292 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 189 transitions, 769 flow [2022-12-13 19:54:01,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 255.14285714285714) internal successors, (1786), 7 states have internal predecessors, (1786), 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 19:54:01,293 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:54:01,293 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-12-13 19:54:01,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39fb21d9-befd-44e5-a280-8236fe96f8c6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 19:54:01,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39fb21d9-befd-44e5-a280-8236fe96f8c6/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 19:54:01,495 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 19:54:01,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:54:01,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1624617000, now seen corresponding path program 1 times [2022-12-13 19:54:01,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:54:01,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508802175] [2022-12-13 19:54:01,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:54:01,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:54:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:54:01,518 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:54:01,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:54:01,529 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:54:01,529 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 19:54:01,530 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2022-12-13 19:54:01,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2022-12-13 19:54:01,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2022-12-13 19:54:01,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (15 of 19 remaining) [2022-12-13 19:54:01,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (14 of 19 remaining) [2022-12-13 19:54:01,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (13 of 19 remaining) [2022-12-13 19:54:01,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2022-12-13 19:54:01,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2022-12-13 19:54:01,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2022-12-13 19:54:01,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2022-12-13 19:54:01,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 19 remaining) [2022-12-13 19:54:01,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 19 remaining) [2022-12-13 19:54:01,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 19 remaining) [2022-12-13 19:54:01,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 19 remaining) [2022-12-13 19:54:01,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 19 remaining) [2022-12-13 19:54:01,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2022-12-13 19:54:01,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 19 remaining) [2022-12-13 19:54:01,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2022-12-13 19:54:01,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2022-12-13 19:54:01,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 19:54:01,531 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-12-13 19:54:01,532 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 19:54:01,532 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-12-13 19:54:01,568 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 19:54:01,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 327 places, 351 transitions, 746 flow [2022-12-13 19:54:01,679 INFO L130 PetriNetUnfolder]: 81/822 cut-off events. [2022-12-13 19:54:01,679 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-13 19:54:01,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 877 conditions, 822 events. 81/822 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3881 event pairs, 6 based on Foata normal form. 0/704 useless extension candidates. Maximal degree in co-relation 562. Up to 32 conditions per place. [2022-12-13 19:54:01,685 INFO L82 GeneralOperation]: Start removeDead. Operand has 327 places, 351 transitions, 746 flow [2022-12-13 19:54:01,690 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 327 places, 351 transitions, 746 flow [2022-12-13 19:54:01,690 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 19:54:01,690 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 327 places, 351 transitions, 746 flow [2022-12-13 19:54:01,690 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 327 places, 351 transitions, 746 flow [2022-12-13 19:54:01,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 327 places, 351 transitions, 746 flow [2022-12-13 19:54:01,795 INFO L130 PetriNetUnfolder]: 81/822 cut-off events. [2022-12-13 19:54:01,795 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-13 19:54:01,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 877 conditions, 822 events. 81/822 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3881 event pairs, 6 based on Foata normal form. 0/704 useless extension candidates. Maximal degree in co-relation 562. Up to 32 conditions per place. [2022-12-13 19:54:01,831 INFO L119 LiptonReduction]: Number of co-enabled transitions 75640 [2022-12-13 19:54:04,756 INFO L134 LiptonReduction]: Checked pairs total: 427926 [2022-12-13 19:54:04,757 INFO L136 LiptonReduction]: Total number of compositions: 178 [2022-12-13 19:54:04,758 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:54:04,758 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;@2c40bc4c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:54:04,758 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-12-13 19:54:04,762 INFO L130 PetriNetUnfolder]: 2/41 cut-off events. [2022-12-13 19:54:04,762 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 19:54:04,762 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:54:04,762 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:54:04,762 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2022-12-13 19:54:04,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:54:04,762 INFO L85 PathProgramCache]: Analyzing trace with hash 44778791, now seen corresponding path program 1 times [2022-12-13 19:54:04,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:54:04,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352966650] [2022-12-13 19:54:04,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:54:04,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:54:04,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:54:04,789 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 19:54:04,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:54:04,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352966650] [2022-12-13 19:54:04,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352966650] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:54:04,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:54:04,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:54:04,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976057864] [2022-12-13 19:54:04,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:54:04,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:54:04,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:54:04,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:54:04,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:54:04,798 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 529 [2022-12-13 19:54:04,799 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 200 transitions, 444 flow. Second operand has 3 states, 3 states have (on average 310.0) internal successors, (930), 3 states have internal predecessors, (930), 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 19:54:04,800 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:54:04,800 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 529 [2022-12-13 19:54:04,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand