./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b34a86-4663-422c-bb47-b6805d5c4de3/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b34a86-4663-422c-bb47-b6805d5c4de3/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b34a86-4663-422c-bb47-b6805d5c4de3/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b34a86-4663-422c-bb47-b6805d5c4de3/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b34a86-4663-422c-bb47-b6805d5c4de3/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b34a86-4663-422c-bb47-b6805d5c4de3/bin/uautomizer-ZsLfNo2U6R --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 4ce97f399f5ab540e05119d9433f4e1bfecfe892f8e87faddc6435387a55a4d6 --- 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-38b53e6 [2022-11-25 16:49:56,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 16:49:56,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 16:49:56,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 16:49:56,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 16:49:56,719 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 16:49:56,722 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 16:49:56,725 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 16:49:56,727 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 16:49:56,733 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 16:49:56,735 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 16:49:56,737 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 16:49:56,738 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 16:49:56,741 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 16:49:56,743 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 16:49:56,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 16:49:56,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 16:49:56,749 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 16:49:56,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 16:49:56,757 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 16:49:56,759 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 16:49:56,762 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 16:49:56,763 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 16:49:56,764 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 16:49:56,775 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 16:49:56,775 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 16:49:56,776 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 16:49:56,778 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 16:49:56,779 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 16:49:56,780 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 16:49:56,780 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 16:49:56,781 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 16:49:56,783 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 16:49:56,784 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 16:49:56,787 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 16:49:56,787 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 16:49:56,788 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 16:49:56,788 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 16:49:56,789 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 16:49:56,790 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 16:49:56,791 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 16:49:56,792 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b34a86-4663-422c-bb47-b6805d5c4de3/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-25 16:49:56,829 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 16:49:56,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 16:49:56,834 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 16:49:56,835 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 16:49:56,836 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 16:49:56,836 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 16:49:56,837 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 16:49:56,837 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 16:49:56,838 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 16:49:56,838 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 16:49:56,839 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 16:49:56,840 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 16:49:56,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 16:49:56,840 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 16:49:56,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 16:49:56,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 16:49:56,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 16:49:56,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 16:49:56,842 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-25 16:49:56,842 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 16:49:56,842 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 16:49:56,843 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 16:49:56,843 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 16:49:56,843 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 16:49:56,844 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 16:49:56,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 16:49:56,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:49:56,845 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 16:49:56,845 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 16:49:56,846 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 16:49:56,846 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 16:49:56,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 16:49:56,847 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 16:49:56,847 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 16:49:56,848 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 16:49:56,848 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 16:49:56,848 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_14b34a86-4663-422c-bb47-b6805d5c4de3/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b34a86-4663-422c-bb47-b6805d5c4de3/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ce97f399f5ab540e05119d9433f4e1bfecfe892f8e87faddc6435387a55a4d6 [2022-11-25 16:49:57,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 16:49:57,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 16:49:57,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 16:49:57,307 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 16:49:57,307 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 16:49:57,309 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b34a86-4663-422c-bb47-b6805d5c4de3/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i [2022-11-25 16:50:00,339 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 16:50:00,732 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 16:50:00,736 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b34a86-4663-422c-bb47-b6805d5c4de3/sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i [2022-11-25 16:50:00,752 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b34a86-4663-422c-bb47-b6805d5c4de3/bin/uautomizer-ZsLfNo2U6R/data/8adaecee7/fe86f9aca1c8417e8f17033added5bff/FLAG5fa50b5fd [2022-11-25 16:50:00,806 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b34a86-4663-422c-bb47-b6805d5c4de3/bin/uautomizer-ZsLfNo2U6R/data/8adaecee7/fe86f9aca1c8417e8f17033added5bff [2022-11-25 16:50:00,809 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 16:50:00,810 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 16:50:00,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 16:50:00,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 16:50:00,818 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 16:50:00,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:50:00" (1/1) ... [2022-11-25 16:50:00,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a7a1b9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:50:00, skipping insertion in model container [2022-11-25 16:50:00,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:50:00" (1/1) ... [2022-11-25 16:50:00,829 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 16:50:00,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 16:50:01,219 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_14b34a86-4663-422c-bb47-b6805d5c4de3/sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i[30176,30189] [2022-11-25 16:50:01,271 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:50:01,289 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 16:50:01,350 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_14b34a86-4663-422c-bb47-b6805d5c4de3/sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i[30176,30189] [2022-11-25 16:50:01,375 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:50:01,424 INFO L208 MainTranslator]: Completed translation [2022-11-25 16:50:01,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:50:01 WrapperNode [2022-11-25 16:50:01,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 16:50:01,426 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 16:50:01,426 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 16:50:01,427 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 16:50:01,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:50:01" (1/1) ... [2022-11-25 16:50:01,472 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:50:01" (1/1) ... [2022-11-25 16:50:01,509 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 81 [2022-11-25 16:50:01,509 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 16:50:01,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 16:50:01,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 16:50:01,511 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 16:50:01,522 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:50:01" (1/1) ... [2022-11-25 16:50:01,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:50:01" (1/1) ... [2022-11-25 16:50:01,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:50:01" (1/1) ... [2022-11-25 16:50:01,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:50:01" (1/1) ... [2022-11-25 16:50:01,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:50:01" (1/1) ... [2022-11-25 16:50:01,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:50:01" (1/1) ... [2022-11-25 16:50:01,569 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:50:01" (1/1) ... [2022-11-25 16:50:01,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:50:01" (1/1) ... [2022-11-25 16:50:01,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 16:50:01,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 16:50:01,575 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 16:50:01,575 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 16:50:01,576 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:50:01" (1/1) ... [2022-11-25 16:50:01,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:50:01,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b34a86-4663-422c-bb47-b6805d5c4de3/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:50:01,616 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b34a86-4663-422c-bb47-b6805d5c4de3/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 16:50:01,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b34a86-4663-422c-bb47-b6805d5c4de3/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 16:50:01,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 16:50:01,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 16:50:01,670 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 16:50:01,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 16:50:01,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 16:50:01,670 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-25 16:50:01,671 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-25 16:50:01,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 16:50:01,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 16:50:01,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 16:50:01,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 16:50:01,673 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 16:50:01,814 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 16:50:01,816 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 16:50:02,268 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 16:50:02,277 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 16:50:02,277 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2022-11-25 16:50:02,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:50:02 BoogieIcfgContainer [2022-11-25 16:50:02,280 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 16:50:02,283 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 16:50:02,283 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 16:50:02,295 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 16:50:02,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 04:50:00" (1/3) ... [2022-11-25 16:50:02,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73ec4413 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:50:02, skipping insertion in model container [2022-11-25 16:50:02,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:50:01" (2/3) ... [2022-11-25 16:50:02,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73ec4413 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:50:02, skipping insertion in model container [2022-11-25 16:50:02,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:50:02" (3/3) ... [2022-11-25 16:50:02,301 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_22-deref_read_racefree.i [2022-11-25 16:50:02,311 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 16:50:02,325 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 16:50:02,325 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-25 16:50:02,326 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 16:50:02,426 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 16:50:02,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 156 transitions, 317 flow [2022-11-25 16:50:02,569 INFO L130 PetriNetUnfolder]: 14/206 cut-off events. [2022-11-25 16:50:02,569 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 16:50:02,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 206 events. 14/206 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 575 event pairs, 0 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 121. Up to 4 conditions per place. [2022-11-25 16:50:02,593 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 156 transitions, 317 flow [2022-11-25 16:50:02,605 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 149 places, 156 transitions, 317 flow [2022-11-25 16:50:02,610 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 16:50:02,639 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 149 places, 156 transitions, 317 flow [2022-11-25 16:50:02,644 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 149 places, 156 transitions, 317 flow [2022-11-25 16:50:02,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 156 transitions, 317 flow [2022-11-25 16:50:02,701 INFO L130 PetriNetUnfolder]: 14/206 cut-off events. [2022-11-25 16:50:02,701 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 16:50:02,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 206 events. 14/206 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 575 event pairs, 0 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 121. Up to 4 conditions per place. [2022-11-25 16:50:02,709 INFO L119 LiptonReduction]: Number of co-enabled transitions 7392 [2022-11-25 16:50:08,188 INFO L134 LiptonReduction]: Checked pairs total: 39564 [2022-11-25 16:50:08,189 INFO L136 LiptonReduction]: Total number of compositions: 152 [2022-11-25 16:50:08,206 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 16:50:08,214 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;@4e48a6a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 16:50:08,214 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-25 16:50:08,218 INFO L130 PetriNetUnfolder]: 0/3 cut-off events. [2022-11-25 16:50:08,219 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 16:50:08,219 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:50:08,220 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 16:50:08,220 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-25 16:50:08,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:50:08,226 INFO L85 PathProgramCache]: Analyzing trace with hash 18623, now seen corresponding path program 1 times [2022-11-25 16:50:08,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:50:08,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117949963] [2022-11-25 16:50:08,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:08,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:50:08,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:08,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:50:08,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:50:08,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117949963] [2022-11-25 16:50:08,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117949963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:50:08,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:50:08,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 16:50:08,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369078891] [2022-11-25 16:50:08,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:50:08,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 16:50:08,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:50:08,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 16:50:08,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 16:50:08,518 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 308 [2022-11-25 16:50:08,524 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 63 transitions, 131 flow. Second operand has 2 states, 2 states have (on average 145.0) internal successors, (290), 2 states have internal predecessors, (290), 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) [2022-11-25 16:50:08,524 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:50:08,524 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 308 [2022-11-25 16:50:08,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:50:08,768 INFO L130 PetriNetUnfolder]: 135/493 cut-off events. [2022-11-25 16:50:08,768 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 16:50:08,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 803 conditions, 493 events. 135/493 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2319 event pairs, 135 based on Foata normal form. 10/480 useless extension candidates. Maximal degree in co-relation 771. Up to 305 conditions per place. [2022-11-25 16:50:08,778 INFO L137 encePairwiseOnDemand]: 295/308 looper letters, 26 selfloop transitions, 0 changer transitions 0/50 dead transitions. [2022-11-25 16:50:08,778 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 50 transitions, 157 flow [2022-11-25 16:50:08,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 16:50:08,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 16:50:08,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 327 transitions. [2022-11-25 16:50:08,804 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5308441558441559 [2022-11-25 16:50:08,805 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 327 transitions. [2022-11-25 16:50:08,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 327 transitions. [2022-11-25 16:50:08,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:50:08,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 327 transitions. [2022-11-25 16:50:08,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 163.5) internal successors, (327), 2 states have internal predecessors, (327), 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) [2022-11-25 16:50:08,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 308.0) internal successors, (924), 3 states have internal predecessors, (924), 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) [2022-11-25 16:50:08,831 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 308.0) internal successors, (924), 3 states have internal predecessors, (924), 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) [2022-11-25 16:50:08,833 INFO L175 Difference]: Start difference. First operand has 58 places, 63 transitions, 131 flow. Second operand 2 states and 327 transitions. [2022-11-25 16:50:08,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 50 transitions, 157 flow [2022-11-25 16:50:08,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 50 transitions, 157 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 16:50:08,840 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 105 flow [2022-11-25 16:50:08,843 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=105, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2022-11-25 16:50:08,847 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, -4 predicate places. [2022-11-25 16:50:08,847 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 105 flow [2022-11-25 16:50:08,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 145.0) internal successors, (290), 2 states have internal predecessors, (290), 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) [2022-11-25 16:50:08,848 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:50:08,848 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-11-25 16:50:08,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 16:50:08,849 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-25 16:50:08,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:50:08,863 INFO L85 PathProgramCache]: Analyzing trace with hash 16251969, now seen corresponding path program 1 times [2022-11-25 16:50:08,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:50:08,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268333515] [2022-11-25 16:50:08,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:08,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:50:08,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 16:50:08,907 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 16:50:08,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 16:50:08,948 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 16:50:08,948 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 16:50:08,950 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-25 16:50:08,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2022-11-25 16:50:08,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2022-11-25 16:50:08,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2022-11-25 16:50:08,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2022-11-25 16:50:08,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2022-11-25 16:50:08,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2022-11-25 16:50:08,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2022-11-25 16:50:08,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2022-11-25 16:50:08,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2022-11-25 16:50:08,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2022-11-25 16:50:08,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2022-11-25 16:50:08,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2022-11-25 16:50:08,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2022-11-25 16:50:08,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2022-11-25 16:50:08,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2022-11-25 16:50:08,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2022-11-25 16:50:08,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 16:50:08,958 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-25 16:50:08,961 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 16:50:08,961 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-25 16:50:08,991 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 16:50:08,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 212 places, 223 transitions, 458 flow [2022-11-25 16:50:09,055 INFO L130 PetriNetUnfolder]: 24/328 cut-off events. [2022-11-25 16:50:09,055 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 16:50:09,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 338 conditions, 328 events. 24/328 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1251 event pairs, 0 based on Foata normal form. 0/277 useless extension candidates. Maximal degree in co-relation 207. Up to 6 conditions per place. [2022-11-25 16:50:09,060 INFO L82 GeneralOperation]: Start removeDead. Operand has 212 places, 223 transitions, 458 flow [2022-11-25 16:50:09,064 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 212 places, 223 transitions, 458 flow [2022-11-25 16:50:09,065 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 16:50:09,065 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 212 places, 223 transitions, 458 flow [2022-11-25 16:50:09,065 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 212 places, 223 transitions, 458 flow [2022-11-25 16:50:09,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 212 places, 223 transitions, 458 flow [2022-11-25 16:50:09,122 INFO L130 PetriNetUnfolder]: 24/328 cut-off events. [2022-11-25 16:50:09,122 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 16:50:09,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 338 conditions, 328 events. 24/328 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1251 event pairs, 0 based on Foata normal form. 0/277 useless extension candidates. Maximal degree in co-relation 207. Up to 6 conditions per place. [2022-11-25 16:50:09,140 INFO L119 LiptonReduction]: Number of co-enabled transitions 23628 [2022-11-25 16:50:16,112 INFO L134 LiptonReduction]: Checked pairs total: 182312 [2022-11-25 16:50:16,113 INFO L136 LiptonReduction]: Total number of compositions: 208 [2022-11-25 16:50:16,117 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 16:50:16,119 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;@4e48a6a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 16:50:16,119 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-11-25 16:50:16,122 INFO L130 PetriNetUnfolder]: 0/2 cut-off events. [2022-11-25 16:50:16,122 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 16:50:16,123 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:50:16,123 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 16:50:16,123 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-25 16:50:16,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:50:16,124 INFO L85 PathProgramCache]: Analyzing trace with hash 33908, now seen corresponding path program 1 times [2022-11-25 16:50:16,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:50:16,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671714632] [2022-11-25 16:50:16,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:16,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:50:16,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:16,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:50:16,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:50:16,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671714632] [2022-11-25 16:50:16,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671714632] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:50:16,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:50:16,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 16:50:16,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817154187] [2022-11-25 16:50:16,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:50:16,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 16:50:16,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:50:16,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 16:50:16,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 16:50:16,182 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 431 [2022-11-25 16:50:16,183 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 110 transitions, 232 flow. Second operand has 2 states, 2 states have (on average 205.0) internal successors, (410), 2 states have internal predecessors, (410), 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) [2022-11-25 16:50:16,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:50:16,183 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 431 [2022-11-25 16:50:16,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:50:17,866 INFO L130 PetriNetUnfolder]: 4116/9683 cut-off events. [2022-11-25 16:50:17,866 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2022-11-25 16:50:17,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16265 conditions, 9683 events. 4116/9683 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 82228 event pairs, 4116 based on Foata normal form. 310/9460 useless extension candidates. Maximal degree in co-relation 13272. Up to 6526 conditions per place. [2022-11-25 16:50:17,943 INFO L137 encePairwiseOnDemand]: 410/431 looper letters, 40 selfloop transitions, 0 changer transitions 0/89 dead transitions. [2022-11-25 16:50:17,944 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 89 transitions, 270 flow [2022-11-25 16:50:17,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 16:50:17,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 16:50:17,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 469 transitions. [2022-11-25 16:50:17,948 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5440835266821346 [2022-11-25 16:50:17,948 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 469 transitions. [2022-11-25 16:50:17,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 469 transitions. [2022-11-25 16:50:17,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:50:17,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 469 transitions. [2022-11-25 16:50:17,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 234.5) internal successors, (469), 2 states have internal predecessors, (469), 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) [2022-11-25 16:50:17,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 431.0) internal successors, (1293), 3 states have internal predecessors, (1293), 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) [2022-11-25 16:50:17,957 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 431.0) internal successors, (1293), 3 states have internal predecessors, (1293), 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) [2022-11-25 16:50:17,957 INFO L175 Difference]: Start difference. First operand has 101 places, 110 transitions, 232 flow. Second operand 2 states and 469 transitions. [2022-11-25 16:50:17,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 89 transitions, 270 flow [2022-11-25 16:50:17,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 89 transitions, 268 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-25 16:50:17,962 INFO L231 Difference]: Finished difference. Result has 95 places, 89 transitions, 188 flow [2022-11-25 16:50:17,963 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=431, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=188, PETRI_PLACES=95, PETRI_TRANSITIONS=89} [2022-11-25 16:50:17,964 INFO L288 CegarLoopForPetriNet]: 101 programPoint places, -6 predicate places. [2022-11-25 16:50:17,964 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 89 transitions, 188 flow [2022-11-25 16:50:17,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 205.0) internal successors, (410), 2 states have internal predecessors, (410), 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) [2022-11-25 16:50:17,965 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:50:17,965 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:50:17,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 16:50:17,966 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-25 16:50:17,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:50:17,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1775745260, now seen corresponding path program 1 times [2022-11-25 16:50:17,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:50:17,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343261566] [2022-11-25 16:50:17,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:17,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:50:18,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:18,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:50:18,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:50:18,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343261566] [2022-11-25 16:50:18,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343261566] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:50:18,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:50:18,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:50:18,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59006613] [2022-11-25 16:50:18,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:50:18,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:50:18,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:50:18,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:50:18,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:50:18,119 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 431 [2022-11-25 16:50:18,120 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 89 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 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) [2022-11-25 16:50:18,120 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:50:18,120 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 431 [2022-11-25 16:50:18,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:50:19,478 INFO L130 PetriNetUnfolder]: 4116/9780 cut-off events. [2022-11-25 16:50:19,478 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-11-25 16:50:19,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16365 conditions, 9780 events. 4116/9780 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 84833 event pairs, 1890 based on Foata normal form. 0/9342 useless extension candidates. Maximal degree in co-relation 16360. Up to 6502 conditions per place. [2022-11-25 16:50:19,543 INFO L137 encePairwiseOnDemand]: 428/431 looper letters, 54 selfloop transitions, 2 changer transitions 0/105 dead transitions. [2022-11-25 16:50:19,544 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 105 transitions, 332 flow [2022-11-25 16:50:19,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:50:19,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:50:19,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 657 transitions. [2022-11-25 16:50:19,553 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5081206496519721 [2022-11-25 16:50:19,553 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 657 transitions. [2022-11-25 16:50:19,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 657 transitions. [2022-11-25 16:50:19,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:50:19,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 657 transitions. [2022-11-25 16:50:19,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 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) [2022-11-25 16:50:19,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 431.0) internal successors, (1724), 4 states have internal predecessors, (1724), 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) [2022-11-25 16:50:19,559 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 431.0) internal successors, (1724), 4 states have internal predecessors, (1724), 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) [2022-11-25 16:50:19,560 INFO L175 Difference]: Start difference. First operand has 95 places, 89 transitions, 188 flow. Second operand 3 states and 657 transitions. [2022-11-25 16:50:19,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 105 transitions, 332 flow [2022-11-25 16:50:19,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 105 transitions, 332 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 16:50:19,564 INFO L231 Difference]: Finished difference. Result has 98 places, 90 transitions, 200 flow [2022-11-25 16:50:19,564 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=431, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=98, PETRI_TRANSITIONS=90} [2022-11-25 16:50:19,567 INFO L288 CegarLoopForPetriNet]: 101 programPoint places, -3 predicate places. [2022-11-25 16:50:19,567 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 90 transitions, 200 flow [2022-11-25 16:50:19,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 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) [2022-11-25 16:50:19,568 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:50:19,568 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-25 16:50:19,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 16:50:19,569 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-25 16:50:19,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:50:19,570 INFO L85 PathProgramCache]: Analyzing trace with hash -863158431, now seen corresponding path program 1 times [2022-11-25 16:50:19,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:50:19,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671649320] [2022-11-25 16:50:19,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:19,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:50:19,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 16:50:19,621 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 16:50:19,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 16:50:19,640 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 16:50:19,641 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 16:50:19,641 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2022-11-25 16:50:19,641 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (21 of 23 remaining) [2022-11-25 16:50:19,642 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (20 of 23 remaining) [2022-11-25 16:50:19,642 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 23 remaining) [2022-11-25 16:50:19,642 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (18 of 23 remaining) [2022-11-25 16:50:19,642 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (17 of 23 remaining) [2022-11-25 16:50:19,643 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (16 of 23 remaining) [2022-11-25 16:50:19,643 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (15 of 23 remaining) [2022-11-25 16:50:19,643 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 23 remaining) [2022-11-25 16:50:19,643 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (13 of 23 remaining) [2022-11-25 16:50:19,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (12 of 23 remaining) [2022-11-25 16:50:19,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 23 remaining) [2022-11-25 16:50:19,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 23 remaining) [2022-11-25 16:50:19,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 23 remaining) [2022-11-25 16:50:19,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 23 remaining) [2022-11-25 16:50:19,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 23 remaining) [2022-11-25 16:50:19,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 23 remaining) [2022-11-25 16:50:19,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 23 remaining) [2022-11-25 16:50:19,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 23 remaining) [2022-11-25 16:50:19,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 23 remaining) [2022-11-25 16:50:19,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 23 remaining) [2022-11-25 16:50:19,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 23 remaining) [2022-11-25 16:50:19,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 23 remaining) [2022-11-25 16:50:19,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 16:50:19,647 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-25 16:50:19,648 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 16:50:19,648 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-25 16:50:19,682 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 16:50:19,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 275 places, 290 transitions, 601 flow [2022-11-25 16:50:19,839 INFO L130 PetriNetUnfolder]: 34/450 cut-off events. [2022-11-25 16:50:19,840 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-25 16:50:19,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 450 events. 34/450 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1935 event pairs, 0 based on Foata normal form. 0/378 useless extension candidates. Maximal degree in co-relation 332. Up to 8 conditions per place. [2022-11-25 16:50:19,847 INFO L82 GeneralOperation]: Start removeDead. Operand has 275 places, 290 transitions, 601 flow [2022-11-25 16:50:19,851 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 275 places, 290 transitions, 601 flow [2022-11-25 16:50:19,851 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 16:50:19,852 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 275 places, 290 transitions, 601 flow [2022-11-25 16:50:19,852 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 275 places, 290 transitions, 601 flow [2022-11-25 16:50:19,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 275 places, 290 transitions, 601 flow [2022-11-25 16:50:19,933 INFO L130 PetriNetUnfolder]: 34/450 cut-off events. [2022-11-25 16:50:19,933 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-25 16:50:19,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 450 events. 34/450 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1935 event pairs, 0 based on Foata normal form. 0/378 useless extension candidates. Maximal degree in co-relation 332. Up to 8 conditions per place. [2022-11-25 16:50:19,964 INFO L119 LiptonReduction]: Number of co-enabled transitions 48708 [2022-11-25 16:50:29,753 INFO L134 LiptonReduction]: Checked pairs total: 440408 [2022-11-25 16:50:29,753 INFO L136 LiptonReduction]: Total number of compositions: 264 [2022-11-25 16:50:29,755 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 16:50:29,756 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;@4e48a6a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 16:50:29,756 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2022-11-25 16:50:29,758 INFO L130 PetriNetUnfolder]: 0/3 cut-off events. [2022-11-25 16:50:29,758 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 16:50:29,758 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:50:29,759 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 16:50:29,759 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2022-11-25 16:50:29,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:50:29,759 INFO L85 PathProgramCache]: Analyzing trace with hash 53161, now seen corresponding path program 1 times [2022-11-25 16:50:29,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:50:29,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543443975] [2022-11-25 16:50:29,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:29,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:50:29,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:29,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:50:29,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:50:29,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543443975] [2022-11-25 16:50:29,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543443975] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:50:29,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:50:29,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 16:50:29,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488470131] [2022-11-25 16:50:29,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:50:29,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 16:50:29,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:50:29,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 16:50:29,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 16:50:29,779 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 554 [2022-11-25 16:50:29,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 154 transitions, 329 flow. Second operand has 2 states, 2 states have (on average 265.0) internal successors, (530), 2 states have internal predecessors, (530), 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) [2022-11-25 16:50:29,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:50:29,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 554 [2022-11-25 16:50:29,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:50:49,525 INFO L130 PetriNetUnfolder]: 95466/174491 cut-off events. [2022-11-25 16:50:49,525 INFO L131 PetriNetUnfolder]: For 1429/1429 co-relation queries the response was YES. [2022-11-25 16:50:50,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307113 conditions, 174491 events. 95466/174491 cut-off events. For 1429/1429 co-relation queries the response was YES. Maximal size of possible extension queue 3429. Compared 1847900 event pairs, 95466 based on Foata normal form. 7060/171684 useless extension candidates. Maximal degree in co-relation 180721. Up to 131626 conditions per place. [2022-11-25 16:50:51,093 INFO L137 encePairwiseOnDemand]: 525/554 looper letters, 55 selfloop transitions, 0 changer transitions 0/125 dead transitions. [2022-11-25 16:50:51,093 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 125 transitions, 381 flow [2022-11-25 16:50:51,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 16:50:51,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 16:50:51,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 612 transitions. [2022-11-25 16:50:51,096 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5523465703971119 [2022-11-25 16:50:51,096 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 612 transitions. [2022-11-25 16:50:51,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 612 transitions. [2022-11-25 16:50:51,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:50:51,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 612 transitions. [2022-11-25 16:50:51,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 306.0) internal successors, (612), 2 states have internal predecessors, (612), 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) [2022-11-25 16:50:51,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 554.0) internal successors, (1662), 3 states have internal predecessors, (1662), 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) [2022-11-25 16:50:51,105 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 554.0) internal successors, (1662), 3 states have internal predecessors, (1662), 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) [2022-11-25 16:50:51,105 INFO L175 Difference]: Start difference. First operand has 141 places, 154 transitions, 329 flow. Second operand 2 states and 612 transitions. [2022-11-25 16:50:51,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 125 transitions, 381 flow [2022-11-25 16:50:51,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 125 transitions, 375 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-11-25 16:50:51,115 INFO L231 Difference]: Finished difference. Result has 133 places, 125 transitions, 265 flow [2022-11-25 16:50:51,117 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=265, PETRI_PLACES=133, PETRI_TRANSITIONS=125} [2022-11-25 16:50:51,120 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, -8 predicate places. [2022-11-25 16:50:51,120 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 125 transitions, 265 flow [2022-11-25 16:50:51,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 265.0) internal successors, (530), 2 states have internal predecessors, (530), 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) [2022-11-25 16:50:51,121 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:50:51,121 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:50:51,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 16:50:51,122 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2022-11-25 16:50:51,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:50:51,122 INFO L85 PathProgramCache]: Analyzing trace with hash -905995184, now seen corresponding path program 1 times [2022-11-25 16:50:51,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:50:51,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579138911] [2022-11-25 16:50:51,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:51,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:50:51,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:51,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:50:51,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:50:51,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579138911] [2022-11-25 16:50:51,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579138911] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:50:51,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:50:51,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:50:51,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554224454] [2022-11-25 16:50:51,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:50:51,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:50:51,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:50:51,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:50:51,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:50:51,208 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 554 [2022-11-25 16:50:51,209 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 125 transitions, 265 flow. Second operand has 3 states, 3 states have (on average 261.6666666666667) internal successors, (785), 3 states have internal predecessors, (785), 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) [2022-11-25 16:50:51,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:50:51,210 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 554 [2022-11-25 16:50:51,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand