./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread/singleton_with-uninit-problems-b.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 5e519f3a 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_772d1955-3438-470c-a6a3-30196e254823/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772d1955-3438-470c-a6a3-30196e254823/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772d1955-3438-470c-a6a3-30196e254823/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772d1955-3438-470c-a6a3-30196e254823/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/singleton_with-uninit-problems-b.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772d1955-3438-470c-a6a3-30196e254823/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772d1955-3438-470c-a6a3-30196e254823/bin/uautomizer-Dbtcem3rbc --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 ee95c6207d65de8bda179fc4eddfd8312f741d4c9ea2d4ac3b4363fbcaae8d19 --- 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-5e519f3 [2022-11-02 20:37:32,456 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:37:32,459 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:37:32,503 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:37:32,504 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:37:32,505 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:37:32,506 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:37:32,509 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:37:32,512 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:37:32,515 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:37:32,517 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:37:32,520 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:37:32,521 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:37:32,524 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:37:32,526 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:37:32,528 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:37:32,531 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:37:32,536 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:37:32,538 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:37:32,540 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:37:32,543 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:37:32,546 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:37:32,547 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:37:32,550 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:37:32,557 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:37:32,562 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:37:32,563 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:37:32,564 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:37:32,565 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:37:32,567 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:37:32,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:37:32,568 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:37:32,570 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:37:32,571 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:37:32,573 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:37:32,574 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:37:32,575 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:37:32,575 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:37:32,575 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:37:32,576 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:37:32,577 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:37:32,578 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772d1955-3438-470c-a6a3-30196e254823/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-02 20:37:32,609 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:37:32,612 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:37:32,613 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:37:32,613 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:37:32,615 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:37:32,615 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:37:32,616 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:37:32,616 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:37:32,616 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:37:32,617 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:37:32,618 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:37:32,618 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:37:32,618 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:37:32,618 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:37:32,619 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:37:32,619 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:37:32,619 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:37:32,619 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:37:32,620 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-02 20:37:32,620 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:37:32,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:37:32,620 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:37:32,620 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:37:32,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:37:32,621 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:37:32,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:37:32,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:37:32,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:37:32,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:37:32,623 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:37:32,623 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:37:32,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:37:32,623 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:37:32,624 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:37:32,624 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:37:32,624 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772d1955-3438-470c-a6a3-30196e254823/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772d1955-3438-470c-a6a3-30196e254823/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ee95c6207d65de8bda179fc4eddfd8312f741d4c9ea2d4ac3b4363fbcaae8d19 [2022-11-02 20:37:32,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:37:32,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:37:33,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:37:33,002 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:37:33,002 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:37:33,004 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772d1955-3438-470c-a6a3-30196e254823/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread/singleton_with-uninit-problems-b.i [2022-11-02 20:37:33,071 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772d1955-3438-470c-a6a3-30196e254823/bin/uautomizer-Dbtcem3rbc/data/748a17890/88207909f0354518996969b51fd7c5e4/FLAG0bb30b203 [2022-11-02 20:37:33,697 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:37:33,700 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772d1955-3438-470c-a6a3-30196e254823/sv-benchmarks/c/pthread/singleton_with-uninit-problems-b.i [2022-11-02 20:37:33,720 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772d1955-3438-470c-a6a3-30196e254823/bin/uautomizer-Dbtcem3rbc/data/748a17890/88207909f0354518996969b51fd7c5e4/FLAG0bb30b203 [2022-11-02 20:37:33,938 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772d1955-3438-470c-a6a3-30196e254823/bin/uautomizer-Dbtcem3rbc/data/748a17890/88207909f0354518996969b51fd7c5e4 [2022-11-02 20:37:33,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:37:33,943 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:37:33,945 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:37:33,945 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:37:33,949 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:37:33,950 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:37:33" (1/1) ... [2022-11-02 20:37:33,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5daa51dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:37:33, skipping insertion in model container [2022-11-02 20:37:33,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:37:33" (1/1) ... [2022-11-02 20:37:33,960 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:37:34,006 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:37:34,594 WARN L230 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_772d1955-3438-470c-a6a3-30196e254823/sv-benchmarks/c/pthread/singleton_with-uninit-problems-b.i[55223,55236] [2022-11-02 20:37:34,633 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:37:34,641 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:37:34,672 WARN L230 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_772d1955-3438-470c-a6a3-30196e254823/sv-benchmarks/c/pthread/singleton_with-uninit-problems-b.i[55223,55236] [2022-11-02 20:37:34,685 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:37:34,752 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:37:34,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:37:34 WrapperNode [2022-11-02 20:37:34,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:37:34,754 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:37:34,754 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:37:34,754 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:37:34,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:37:34" (1/1) ... [2022-11-02 20:37:34,791 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:37:34" (1/1) ... [2022-11-02 20:37:34,840 INFO L138 Inliner]: procedures = 323, calls = 48, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 54 [2022-11-02 20:37:34,840 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:37:34,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:37:34,842 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:37:34,842 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:37:34,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:37:34" (1/1) ... [2022-11-02 20:37:34,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:37:34" (1/1) ... [2022-11-02 20:37:34,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:37:34" (1/1) ... [2022-11-02 20:37:34,872 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:37:34" (1/1) ... [2022-11-02 20:37:34,884 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:37:34" (1/1) ... [2022-11-02 20:37:34,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:37:34" (1/1) ... [2022-11-02 20:37:34,906 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:37:34" (1/1) ... [2022-11-02 20:37:34,908 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:37:34" (1/1) ... [2022-11-02 20:37:34,911 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:37:34,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:37:34,912 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:37:34,912 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:37:34,913 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:37:34" (1/1) ... [2022-11-02 20:37:34,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:37:34,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772d1955-3438-470c-a6a3-30196e254823/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:37:34,974 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772d1955-3438-470c-a6a3-30196e254823/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:37:34,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772d1955-3438-470c-a6a3-30196e254823/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:37:35,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:37:35,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:37:35,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:37:35,016 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2022-11-02 20:37:35,016 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2022-11-02 20:37:35,016 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 20:37:35,017 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 20:37:35,017 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 20:37:35,017 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 20:37:35,017 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-02 20:37:35,017 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-02 20:37:35,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:37:35,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:37:35,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:37:35,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:37:35,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:37:35,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:37:35,020 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:37:35,252 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:37:35,254 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:37:35,737 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:37:35,767 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:37:35,767 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 20:37:35,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:37:35 BoogieIcfgContainer [2022-11-02 20:37:35,769 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:37:35,772 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:37:35,772 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:37:35,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:37:35,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:37:33" (1/3) ... [2022-11-02 20:37:35,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b7c396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:37:35, skipping insertion in model container [2022-11-02 20:37:35,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:37:34" (2/3) ... [2022-11-02 20:37:35,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b7c396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:37:35, skipping insertion in model container [2022-11-02 20:37:35,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:37:35" (3/3) ... [2022-11-02 20:37:35,779 INFO L112 eAbstractionObserver]: Analyzing ICFG singleton_with-uninit-problems-b.i [2022-11-02 20:37:35,788 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:37:35,797 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:37:35,798 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2022-11-02 20:37:35,798 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:37:36,018 INFO L144 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2022-11-02 20:37:36,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 318 places, 309 transitions, 725 flow [2022-11-02 20:37:36,176 INFO L130 PetriNetUnfolder]: 7/222 cut-off events. [2022-11-02 20:37:36,176 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-02 20:37:36,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 222 events. 7/222 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 212 event pairs, 0 based on Foata normal form. 0/196 useless extension candidates. Maximal degree in co-relation 189. Up to 3 conditions per place. [2022-11-02 20:37:36,184 INFO L82 GeneralOperation]: Start removeDead. Operand has 318 places, 309 transitions, 725 flow [2022-11-02 20:37:36,190 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 215 places, 201 transitions, 453 flow [2022-11-02 20:37:36,201 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:37:36,208 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;@6e3f1ce5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:37:36,209 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2022-11-02 20:37:36,218 INFO L130 PetriNetUnfolder]: 0/32 cut-off events. [2022-11-02 20:37:36,218 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:37:36,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:37:36,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:37:36,220 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2022-11-02 20:37:36,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:37:36,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1993139042, now seen corresponding path program 1 times [2022-11-02 20:37:36,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:37:36,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923132079] [2022-11-02 20:37:36,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:37:36,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:37:36,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:37,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:37:37,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:37:37,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923132079] [2022-11-02 20:37:37,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923132079] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:37:37,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:37:37,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:37:37,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653757283] [2022-11-02 20:37:37,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:37:37,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:37:37,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:37:37,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:37:37,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:37:37,183 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 311 [2022-11-02 20:37:37,189 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 201 transitions, 453 flow. Second operand has 6 states, 6 states have (on average 195.66666666666666) internal successors, (1174), 6 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:37:37,189 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:37:37,189 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 311 [2022-11-02 20:37:37,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:38:12,137 INFO L130 PetriNetUnfolder]: 112378/156329 cut-off events. [2022-11-02 20:38:12,137 INFO L131 PetriNetUnfolder]: For 3114/3174 co-relation queries the response was YES. [2022-11-02 20:38:12,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305182 conditions, 156329 events. 112378/156329 cut-off events. For 3114/3174 co-relation queries the response was YES. Maximal size of possible extension queue 5324. Compared 1159938 event pairs, 52264 based on Foata normal form. 4/117326 useless extension candidates. Maximal degree in co-relation 305102. Up to 95611 conditions per place. [2022-11-02 20:38:14,069 INFO L137 encePairwiseOnDemand]: 301/311 looper letters, 291 selfloop transitions, 21 changer transitions 0/439 dead transitions. [2022-11-02 20:38:14,070 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 439 transitions, 1736 flow [2022-11-02 20:38:14,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:38:14,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:38:14,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1477 transitions. [2022-11-02 20:38:14,098 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7915326902465166 [2022-11-02 20:38:14,099 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1477 transitions. [2022-11-02 20:38:14,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1477 transitions. [2022-11-02 20:38:14,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:38:14,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1477 transitions. [2022-11-02 20:38:14,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 246.16666666666666) internal successors, (1477), 6 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:14,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 311.0) internal successors, (2177), 7 states have internal predecessors, (2177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:14,127 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 311.0) internal successors, (2177), 7 states have internal predecessors, (2177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:14,129 INFO L175 Difference]: Start difference. First operand has 215 places, 201 transitions, 453 flow. Second operand 6 states and 1477 transitions. [2022-11-02 20:38:14,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 439 transitions, 1736 flow [2022-11-02 20:38:14,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 439 transitions, 1580 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-11-02 20:38:14,234 INFO L231 Difference]: Finished difference. Result has 213 places, 221 transitions, 561 flow [2022-11-02 20:38:14,236 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=561, PETRI_PLACES=213, PETRI_TRANSITIONS=221} [2022-11-02 20:38:14,244 INFO L287 CegarLoopForPetriNet]: 215 programPoint places, -2 predicate places. [2022-11-02 20:38:14,244 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 221 transitions, 561 flow [2022-11-02 20:38:14,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 195.66666666666666) internal successors, (1174), 6 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:14,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:38:14,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:14,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:38:14,248 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2022-11-02 20:38:14,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:14,249 INFO L85 PathProgramCache]: Analyzing trace with hash 572303943, now seen corresponding path program 1 times [2022-11-02 20:38:14,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:14,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41504563] [2022-11-02 20:38:14,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:14,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:14,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:14,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:14,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41504563] [2022-11-02 20:38:14,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41504563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:14,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:38:14,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:38:14,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299972163] [2022-11-02 20:38:14,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:14,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:38:14,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:14,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:38:14,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:38:14,352 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 311 [2022-11-02 20:38:14,354 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 221 transitions, 561 flow. Second operand has 3 states, 3 states have (on average 256.6666666666667) internal successors, (770), 3 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:14,354 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:38:14,354 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 311 [2022-11-02 20:38:14,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:38:17,270 INFO L130 PetriNetUnfolder]: 6047/20369 cut-off events. [2022-11-02 20:38:17,270 INFO L131 PetriNetUnfolder]: For 2967/3655 co-relation queries the response was YES. [2022-11-02 20:38:17,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34161 conditions, 20369 events. 6047/20369 cut-off events. For 2967/3655 co-relation queries the response was YES. Maximal size of possible extension queue 1496. Compared 262065 event pairs, 2960 based on Foata normal form. 0/15719 useless extension candidates. Maximal degree in co-relation 22717. Up to 4062 conditions per place. [2022-11-02 20:38:17,492 INFO L137 encePairwiseOnDemand]: 308/311 looper letters, 37 selfloop transitions, 2 changer transitions 0/220 dead transitions. [2022-11-02 20:38:17,492 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 220 transitions, 637 flow [2022-11-02 20:38:17,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:38:17,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:38:17,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 805 transitions. [2022-11-02 20:38:17,495 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8628081457663451 [2022-11-02 20:38:17,495 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 805 transitions. [2022-11-02 20:38:17,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 805 transitions. [2022-11-02 20:38:17,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:38:17,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 805 transitions. [2022-11-02 20:38:17,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 268.3333333333333) internal successors, (805), 3 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:17,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:17,502 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:17,502 INFO L175 Difference]: Start difference. First operand has 213 places, 221 transitions, 561 flow. Second operand 3 states and 805 transitions. [2022-11-02 20:38:17,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 220 transitions, 637 flow [2022-11-02 20:38:17,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 220 transitions, 637 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:38:17,578 INFO L231 Difference]: Finished difference. Result has 214 places, 220 transitions, 563 flow [2022-11-02 20:38:17,578 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=559, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=563, PETRI_PLACES=214, PETRI_TRANSITIONS=220} [2022-11-02 20:38:17,579 INFO L287 CegarLoopForPetriNet]: 215 programPoint places, -1 predicate places. [2022-11-02 20:38:17,579 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 220 transitions, 563 flow [2022-11-02 20:38:17,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 256.6666666666667) internal successors, (770), 3 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:17,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:38:17,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:17,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:38:17,581 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread0Err0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2022-11-02 20:38:17,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:17,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1499866840, now seen corresponding path program 1 times [2022-11-02 20:38:17,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:17,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800980178] [2022-11-02 20:38:17,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:17,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:17,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:18,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:18,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:18,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800980178] [2022-11-02 20:38:18,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800980178] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:18,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:38:18,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:38:18,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742957736] [2022-11-02 20:38:18,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:18,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:38:18,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:18,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:38:18,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:38:18,172 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 311 [2022-11-02 20:38:18,174 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 220 transitions, 563 flow. Second operand has 6 states, 6 states have (on average 196.66666666666666) internal successors, (1180), 6 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:18,174 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:38:18,175 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 311 [2022-11-02 20:38:18,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand