./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 6b4ec56b 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_d06b8714-f2d8-42ce-86d7-74b85d8baf55/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b8714-f2d8-42ce-86d7-74b85d8baf55/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b8714-f2d8-42ce-86d7-74b85d8baf55/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b8714-f2d8-42ce-86d7-74b85d8baf55/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b8714-f2d8-42ce-86d7-74b85d8baf55/bin/uautomizer-ug76WZFUDN/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b8714-f2d8-42ce-86d7-74b85d8baf55/bin/uautomizer-ug76WZFUDN --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 c7fdb1595c27c144c3bf111946260cb3946663200a2d53f7fba5455031291c4f --- 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-6b4ec56 [2022-11-20 12:31:03,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:31:03,718 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:31:03,759 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:31:03,759 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:31:03,763 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:31:03,765 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:31:03,769 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:31:03,771 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:31:03,776 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:31:03,778 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:31:03,781 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:31:03,782 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:31:03,784 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:31:03,787 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:31:03,791 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:31:03,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:31:03,794 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:31:03,796 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:31:03,802 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:31:03,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:31:03,806 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:31:03,808 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:31:03,809 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:31:03,819 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:31:03,820 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:31:03,820 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:31:03,821 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:31:03,823 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:31:03,824 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:31:03,824 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:31:03,825 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:31:03,828 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:31:03,829 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:31:03,831 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:31:03,831 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:31:03,832 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:31:03,833 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:31:03,833 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:31:03,834 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:31:03,835 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:31:03,836 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b8714-f2d8-42ce-86d7-74b85d8baf55/bin/uautomizer-ug76WZFUDN/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-20 12:31:03,874 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:31:03,875 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:31:03,875 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:31:03,876 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:31:03,877 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:31:03,877 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:31:03,878 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:31:03,878 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:31:03,878 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:31:03,879 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:31:03,880 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:31:03,880 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:31:03,880 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:31:03,880 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:31:03,880 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:31:03,881 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:31:03,881 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:31:03,881 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:31:03,881 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-20 12:31:03,882 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:31:03,882 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:31:03,882 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:31:03,882 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:31:03,883 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:31:03,883 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:31:03,883 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:31:03,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:31:03,884 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:31:03,884 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:31:03,884 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:31:03,885 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:31:03,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:31:03,885 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:31:03,885 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:31:03,886 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:31:03,886 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_d06b8714-f2d8-42ce-86d7-74b85d8baf55/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b8714-f2d8-42ce-86d7-74b85d8baf55/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7fdb1595c27c144c3bf111946260cb3946663200a2d53f7fba5455031291c4f [2022-11-20 12:31:04,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:31:04,248 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:31:04,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:31:04,254 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:31:04,254 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:31:04,255 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b8714-f2d8-42ce-86d7-74b85d8baf55/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c [2022-11-20 12:31:07,352 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:31:07,609 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:31:07,610 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b8714-f2d8-42ce-86d7-74b85d8baf55/sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c [2022-11-20 12:31:07,619 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b8714-f2d8-42ce-86d7-74b85d8baf55/bin/uautomizer-ug76WZFUDN/data/2e112ecb5/bc3d5b81277f4a77bdf9c8c8c6924457/FLAGc1367a0fa [2022-11-20 12:31:07,638 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b8714-f2d8-42ce-86d7-74b85d8baf55/bin/uautomizer-ug76WZFUDN/data/2e112ecb5/bc3d5b81277f4a77bdf9c8c8c6924457 [2022-11-20 12:31:07,641 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:31:07,643 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:31:07,646 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:31:07,646 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:31:07,649 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:31:07,650 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:31:07" (1/1) ... [2022-11-20 12:31:07,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27bee26f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:31:07, skipping insertion in model container [2022-11-20 12:31:07,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:31:07" (1/1) ... [2022-11-20 12:31:07,659 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:31:07,682 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:31:07,928 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_d06b8714-f2d8-42ce-86d7-74b85d8baf55/sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c[2695,2708] [2022-11-20 12:31:07,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:31:07,948 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:31:07,992 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_d06b8714-f2d8-42ce-86d7-74b85d8baf55/sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c[2695,2708] [2022-11-20 12:31:07,996 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:31:08,012 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:31:08,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:31:08 WrapperNode [2022-11-20 12:31:08,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:31:08,013 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:31:08,013 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:31:08,014 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:31:08,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:31:08" (1/1) ... [2022-11-20 12:31:08,032 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:31:08" (1/1) ... [2022-11-20 12:31:08,071 INFO L138 Inliner]: procedures = 25, calls = 37, calls flagged for inlining = 15, calls inlined = 19, statements flattened = 334 [2022-11-20 12:31:08,071 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:31:08,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:31:08,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:31:08,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:31:08,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:31:08" (1/1) ... [2022-11-20 12:31:08,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:31:08" (1/1) ... [2022-11-20 12:31:08,095 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:31:08" (1/1) ... [2022-11-20 12:31:08,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:31:08" (1/1) ... [2022-11-20 12:31:08,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:31:08" (1/1) ... [2022-11-20 12:31:08,127 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:31:08" (1/1) ... [2022-11-20 12:31:08,142 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:31:08" (1/1) ... [2022-11-20 12:31:08,144 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:31:08" (1/1) ... [2022-11-20 12:31:08,148 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:31:08,149 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:31:08,149 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:31:08,149 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:31:08,150 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:31:08" (1/1) ... [2022-11-20 12:31:08,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:31:08,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b8714-f2d8-42ce-86d7-74b85d8baf55/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:31:08,204 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b8714-f2d8-42ce-86d7-74b85d8baf55/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:31:08,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b8714-f2d8-42ce-86d7-74b85d8baf55/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:31:08,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:31:08,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:31:08,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:31:08,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:31:08,257 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 12:31:08,258 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 12:31:08,258 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 12:31:08,259 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 12:31:08,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:31:08,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:31:08,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:31:08,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:31:08,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:31:08,261 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 12:31:08,476 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:31:08,478 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:31:09,298 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:31:09,311 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:31:09,311 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 12:31:09,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:31:09 BoogieIcfgContainer [2022-11-20 12:31:09,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:31:09,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:31:09,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:31:09,321 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:31:09,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:31:07" (1/3) ... [2022-11-20 12:31:09,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f765d7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:31:09, skipping insertion in model container [2022-11-20 12:31:09,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:31:08" (2/3) ... [2022-11-20 12:31:09,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f765d7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:31:09, skipping insertion in model container [2022-11-20 12:31:09,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:31:09" (3/3) ... [2022-11-20 12:31:09,324 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-symm.wvr.c [2022-11-20 12:31:09,333 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:31:09,345 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:31:09,345 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2022-11-20 12:31:09,345 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:31:09,519 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 12:31:09,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 423 places, 442 transitions, 900 flow [2022-11-20 12:31:09,750 INFO L130 PetriNetUnfolder]: 26/440 cut-off events. [2022-11-20 12:31:09,750 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 12:31:09,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 449 conditions, 440 events. 26/440 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 698 event pairs, 0 based on Foata normal form. 0/378 useless extension candidates. Maximal degree in co-relation 252. Up to 2 conditions per place. [2022-11-20 12:31:09,762 INFO L82 GeneralOperation]: Start removeDead. Operand has 423 places, 442 transitions, 900 flow [2022-11-20 12:31:09,782 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 402 places, 419 transitions, 850 flow [2022-11-20 12:31:09,796 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:31:09,804 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;@586990ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:31:09,806 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2022-11-20 12:31:09,817 INFO L130 PetriNetUnfolder]: 3/60 cut-off events. [2022-11-20 12:31:09,821 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:31:09,822 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:31:09,823 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:31:09,824 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-11-20 12:31:09,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:31:09,831 INFO L85 PathProgramCache]: Analyzing trace with hash -311777620, now seen corresponding path program 1 times [2022-11-20 12:31:09,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:31:09,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993234017] [2022-11-20 12:31:09,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:31:09,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:31:10,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:31:10,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:31:10,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:31:10,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993234017] [2022-11-20 12:31:10,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993234017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:31:10,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:31:10,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:31:10,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691573855] [2022-11-20 12:31:10,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:31:10,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 12:31:10,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:31:10,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 12:31:10,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 12:31:10,206 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 442 [2022-11-20 12:31:10,213 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 419 transitions, 850 flow. Second operand has 2 states, 2 states have (on average 420.5) internal successors, (841), 2 states have internal predecessors, (841), 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) [2022-11-20 12:31:10,214 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:31:10,214 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 442 [2022-11-20 12:31:10,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:31:10,352 INFO L130 PetriNetUnfolder]: 8/403 cut-off events. [2022-11-20 12:31:10,353 INFO L131 PetriNetUnfolder]: For 9/10 co-relation queries the response was YES. [2022-11-20 12:31:10,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 417 conditions, 403 events. 8/403 cut-off events. For 9/10 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 673 event pairs, 0 based on Foata normal form. 18/366 useless extension candidates. Maximal degree in co-relation 243. Up to 5 conditions per place. [2022-11-20 12:31:10,363 INFO L137 encePairwiseOnDemand]: 426/442 looper letters, 4 selfloop transitions, 0 changer transitions 6/403 dead transitions. [2022-11-20 12:31:10,364 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 403 transitions, 826 flow [2022-11-20 12:31:10,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 12:31:10,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 12:31:10,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 860 transitions. [2022-11-20 12:31:10,386 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9728506787330317 [2022-11-20 12:31:10,388 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 860 transitions. [2022-11-20 12:31:10,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 860 transitions. [2022-11-20 12:31:10,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:31:10,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 860 transitions. [2022-11-20 12:31:10,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 430.0) internal successors, (860), 2 states have internal predecessors, (860), 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) [2022-11-20 12:31:10,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 442.0) internal successors, (1326), 3 states have internal predecessors, (1326), 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) [2022-11-20 12:31:10,413 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 442.0) internal successors, (1326), 3 states have internal predecessors, (1326), 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) [2022-11-20 12:31:10,416 INFO L175 Difference]: Start difference. First operand has 402 places, 419 transitions, 850 flow. Second operand 2 states and 860 transitions. [2022-11-20 12:31:10,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 403 transitions, 826 flow [2022-11-20 12:31:10,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 403 transitions, 818 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:31:10,437 INFO L231 Difference]: Finished difference. Result has 399 places, 397 transitions, 798 flow [2022-11-20 12:31:10,440 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=810, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=798, PETRI_PLACES=399, PETRI_TRANSITIONS=397} [2022-11-20 12:31:10,445 INFO L288 CegarLoopForPetriNet]: 402 programPoint places, -3 predicate places. [2022-11-20 12:31:10,446 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 397 transitions, 798 flow [2022-11-20 12:31:10,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 420.5) internal successors, (841), 2 states have internal predecessors, (841), 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) [2022-11-20 12:31:10,447 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:31:10,447 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:31:10,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:31:10,448 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-11-20 12:31:10,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:31:10,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1431032715, now seen corresponding path program 1 times [2022-11-20 12:31:10,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:31:10,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837348635] [2022-11-20 12:31:10,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:31:10,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:31:10,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:31:10,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:31:10,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:31:10,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837348635] [2022-11-20 12:31:10,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837348635] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:31:10,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:31:10,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:31:10,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026032323] [2022-11-20 12:31:10,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:31:10,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:31:10,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:31:10,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:31:10,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:31:10,589 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 408 out of 442 [2022-11-20 12:31:10,591 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 397 transitions, 798 flow. Second operand has 3 states, 3 states have (on average 409.3333333333333) internal successors, (1228), 3 states have internal predecessors, (1228), 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) [2022-11-20 12:31:10,591 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:31:10,591 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 408 of 442 [2022-11-20 12:31:10,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:31:10,845 INFO L130 PetriNetUnfolder]: 42/926 cut-off events. [2022-11-20 12:31:10,845 INFO L131 PetriNetUnfolder]: For 10/11 co-relation queries the response was YES. [2022-11-20 12:31:10,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 991 conditions, 926 events. 42/926 cut-off events. For 10/11 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3951 event pairs, 15 based on Foata normal form. 0/791 useless extension candidates. Maximal degree in co-relation 988. Up to 56 conditions per place. [2022-11-20 12:31:10,855 INFO L137 encePairwiseOnDemand]: 439/442 looper letters, 13 selfloop transitions, 2 changer transitions 0/396 dead transitions. [2022-11-20 12:31:10,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 396 transitions, 826 flow [2022-11-20 12:31:10,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:31:10,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:31:10,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1240 transitions. [2022-11-20 12:31:10,860 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9351432880844646 [2022-11-20 12:31:10,861 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1240 transitions. [2022-11-20 12:31:10,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1240 transitions. [2022-11-20 12:31:10,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:31:10,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1240 transitions. [2022-11-20 12:31:10,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 413.3333333333333) internal successors, (1240), 3 states have internal predecessors, (1240), 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) [2022-11-20 12:31:10,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 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) [2022-11-20 12:31:10,870 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 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) [2022-11-20 12:31:10,870 INFO L175 Difference]: Start difference. First operand has 399 places, 397 transitions, 798 flow. Second operand 3 states and 1240 transitions. [2022-11-20 12:31:10,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 396 transitions, 826 flow [2022-11-20 12:31:10,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 396 transitions, 826 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:31:10,878 INFO L231 Difference]: Finished difference. Result has 394 places, 396 transitions, 800 flow [2022-11-20 12:31:10,879 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=796, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=800, PETRI_PLACES=394, PETRI_TRANSITIONS=396} [2022-11-20 12:31:10,879 INFO L288 CegarLoopForPetriNet]: 402 programPoint places, -8 predicate places. [2022-11-20 12:31:10,880 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 396 transitions, 800 flow [2022-11-20 12:31:10,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 409.3333333333333) internal successors, (1228), 3 states have internal predecessors, (1228), 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) [2022-11-20 12:31:10,881 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:31:10,882 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:31:10,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:31:10,882 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-11-20 12:31:10,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:31:10,884 INFO L85 PathProgramCache]: Analyzing trace with hash -970762140, now seen corresponding path program 1 times [2022-11-20 12:31:10,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:31:10,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667632406] [2022-11-20 12:31:10,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:31:10,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:31:10,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:31:11,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:31:11,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:31:11,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667632406] [2022-11-20 12:31:11,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667632406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:31:11,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:31:11,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:31:11,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127459548] [2022-11-20 12:31:11,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:31:11,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:31:11,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:31:11,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:31:11,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:31:11,526 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 350 out of 442 [2022-11-20 12:31:11,529 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 396 transitions, 800 flow. Second operand has 6 states, 6 states have (on average 351.8333333333333) internal successors, (2111), 6 states have internal predecessors, (2111), 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) [2022-11-20 12:31:11,529 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:31:11,529 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 350 of 442 [2022-11-20 12:31:11,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:31:14,436 INFO L130 PetriNetUnfolder]: 2470/13497 cut-off events. [2022-11-20 12:31:14,437 INFO L131 PetriNetUnfolder]: For 26/38 co-relation queries the response was YES. [2022-11-20 12:31:14,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17150 conditions, 13497 events. 2470/13497 cut-off events. For 26/38 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 154650 event pairs, 2112 based on Foata normal form. 0/11292 useless extension candidates. Maximal degree in co-relation 17146. Up to 3624 conditions per place. [2022-11-20 12:31:14,585 INFO L137 encePairwiseOnDemand]: 430/442 looper letters, 62 selfloop transitions, 10 changer transitions 0/394 dead transitions. [2022-11-20 12:31:14,585 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 394 transitions, 940 flow [2022-11-20 12:31:14,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:31:14,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:31:14,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2174 transitions. [2022-11-20 12:31:14,591 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8197586726998491 [2022-11-20 12:31:14,591 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2174 transitions. [2022-11-20 12:31:14,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2174 transitions. [2022-11-20 12:31:14,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:31:14,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2174 transitions. [2022-11-20 12:31:14,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 362.3333333333333) internal successors, (2174), 6 states have internal predecessors, (2174), 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) [2022-11-20 12:31:14,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 442.0) internal successors, (3094), 7 states have internal predecessors, (3094), 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) [2022-11-20 12:31:14,606 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 442.0) internal successors, (3094), 7 states have internal predecessors, (3094), 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) [2022-11-20 12:31:14,606 INFO L175 Difference]: Start difference. First operand has 394 places, 396 transitions, 800 flow. Second operand 6 states and 2174 transitions. [2022-11-20 12:31:14,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 394 transitions, 940 flow [2022-11-20 12:31:14,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 394 transitions, 936 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:31:14,614 INFO L231 Difference]: Finished difference. Result has 395 places, 394 transitions, 812 flow [2022-11-20 12:31:14,615 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=812, PETRI_PLACES=395, PETRI_TRANSITIONS=394} [2022-11-20 12:31:14,616 INFO L288 CegarLoopForPetriNet]: 402 programPoint places, -7 predicate places. [2022-11-20 12:31:14,616 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 394 transitions, 812 flow [2022-11-20 12:31:14,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 351.8333333333333) internal successors, (2111), 6 states have internal predecessors, (2111), 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) [2022-11-20 12:31:14,618 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:31:14,618 INFO L209 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:31:14,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:31:14,619 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-11-20 12:31:14,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:31:14,620 INFO L85 PathProgramCache]: Analyzing trace with hash 516599703, now seen corresponding path program 1 times [2022-11-20 12:31:14,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:31:14,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452772404] [2022-11-20 12:31:14,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:31:14,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:31:14,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:31:14,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:31:14,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:31:14,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452772404] [2022-11-20 12:31:14,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452772404] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:31:14,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:31:14,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:31:14,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991868759] [2022-11-20 12:31:14,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:31:14,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:31:14,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:31:14,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:31:14,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:31:14,676 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 408 out of 442 [2022-11-20 12:31:14,677 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 394 transitions, 812 flow. Second operand has 3 states, 3 states have (on average 409.3333333333333) internal successors, (1228), 3 states have internal predecessors, (1228), 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) [2022-11-20 12:31:14,678 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:31:14,678 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 408 of 442 [2022-11-20 12:31:14,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:31:14,836 INFO L130 PetriNetUnfolder]: 40/913 cut-off events. [2022-11-20 12:31:14,837 INFO L131 PetriNetUnfolder]: For 10/11 co-relation queries the response was YES. [2022-11-20 12:31:14,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 987 conditions, 913 events. 40/913 cut-off events. For 10/11 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4047 event pairs, 15 based on Foata normal form. 0/782 useless extension candidates. Maximal degree in co-relation 983. Up to 54 conditions per place. [2022-11-20 12:31:14,846 INFO L137 encePairwiseOnDemand]: 439/442 looper letters, 13 selfloop transitions, 2 changer transitions 0/393 dead transitions. [2022-11-20 12:31:14,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 393 transitions, 840 flow [2022-11-20 12:31:14,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:31:14,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:31:14,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1240 transitions. [2022-11-20 12:31:14,851 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9351432880844646 [2022-11-20 12:31:14,851 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1240 transitions. [2022-11-20 12:31:14,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1240 transitions. [2022-11-20 12:31:14,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:31:14,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1240 transitions. [2022-11-20 12:31:14,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 413.3333333333333) internal successors, (1240), 3 states have internal predecessors, (1240), 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) [2022-11-20 12:31:14,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 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) [2022-11-20 12:31:14,860 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 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) [2022-11-20 12:31:14,860 INFO L175 Difference]: Start difference. First operand has 395 places, 394 transitions, 812 flow. Second operand 3 states and 1240 transitions. [2022-11-20 12:31:14,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 393 transitions, 840 flow [2022-11-20 12:31:14,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 393 transitions, 820 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:31:14,868 INFO L231 Difference]: Finished difference. Result has 391 places, 393 transitions, 794 flow [2022-11-20 12:31:14,869 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=794, PETRI_PLACES=391, PETRI_TRANSITIONS=393} [2022-11-20 12:31:14,870 INFO L288 CegarLoopForPetriNet]: 402 programPoint places, -11 predicate places. [2022-11-20 12:31:14,870 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 393 transitions, 794 flow [2022-11-20 12:31:14,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 409.3333333333333) internal successors, (1228), 3 states have internal predecessors, (1228), 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) [2022-11-20 12:31:14,872 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:31:14,872 INFO L209 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:31:14,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:31:14,872 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-11-20 12:31:14,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:31:14,873 INFO L85 PathProgramCache]: Analyzing trace with hash 2059602869, now seen corresponding path program 1 times [2022-11-20 12:31:14,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:31:14,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280363460] [2022-11-20 12:31:14,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:31:14,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:31:14,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:31:14,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:31:14,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:31:14,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280363460] [2022-11-20 12:31:14,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280363460] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:31:14,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:31:14,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:31:14,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793425016] [2022-11-20 12:31:14,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:31:14,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:31:14,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:31:14,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:31:14,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:31:14,927 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 408 out of 442 [2022-11-20 12:31:14,929 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 393 transitions, 794 flow. Second operand has 3 states, 3 states have (on average 409.3333333333333) internal successors, (1228), 3 states have internal predecessors, (1228), 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) [2022-11-20 12:31:14,929 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:31:14,929 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 408 of 442 [2022-11-20 12:31:14,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:31:15,125 INFO L130 PetriNetUnfolder]: 35/966 cut-off events. [2022-11-20 12:31:15,125 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-20 12:31:15,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1022 conditions, 966 events. 35/966 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 4575 event pairs, 15 based on Foata normal form. 0/823 useless extension candidates. Maximal degree in co-relation 1018. Up to 44 conditions per place. [2022-11-20 12:31:15,132 INFO L137 encePairwiseOnDemand]: 439/442 looper letters, 13 selfloop transitions, 2 changer transitions 0/392 dead transitions. [2022-11-20 12:31:15,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 392 transitions, 822 flow [2022-11-20 12:31:15,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:31:15,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:31:15,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1240 transitions. [2022-11-20 12:31:15,135 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9351432880844646 [2022-11-20 12:31:15,136 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1240 transitions. [2022-11-20 12:31:15,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1240 transitions. [2022-11-20 12:31:15,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:31:15,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1240 transitions. [2022-11-20 12:31:15,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 413.3333333333333) internal successors, (1240), 3 states have internal predecessors, (1240), 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) [2022-11-20 12:31:15,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 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) [2022-11-20 12:31:15,144 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 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) [2022-11-20 12:31:15,145 INFO L175 Difference]: Start difference. First operand has 391 places, 393 transitions, 794 flow. Second operand 3 states and 1240 transitions. [2022-11-20 12:31:15,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 392 transitions, 822 flow [2022-11-20 12:31:15,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 392 transitions, 818 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:31:15,152 INFO L231 Difference]: Finished difference. Result has 390 places, 392 transitions, 792 flow [2022-11-20 12:31:15,153 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=788, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=792, PETRI_PLACES=390, PETRI_TRANSITIONS=392} [2022-11-20 12:31:15,153 INFO L288 CegarLoopForPetriNet]: 402 programPoint places, -12 predicate places. [2022-11-20 12:31:15,154 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 392 transitions, 792 flow [2022-11-20 12:31:15,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 409.3333333333333) internal successors, (1228), 3 states have internal predecessors, (1228), 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) [2022-11-20 12:31:15,155 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:31:15,155 INFO L209 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:31:15,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:31:15,156 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-11-20 12:31:15,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:31:15,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1623151406, now seen corresponding path program 1 times [2022-11-20 12:31:15,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:31:15,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776250096] [2022-11-20 12:31:15,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:31:15,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:31:15,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:31:15,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:31:15,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:31:15,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776250096] [2022-11-20 12:31:15,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776250096] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:31:15,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:31:15,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:31:15,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795020412] [2022-11-20 12:31:15,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:31:15,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:31:15,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:31:15,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:31:15,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:31:15,209 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 408 out of 442 [2022-11-20 12:31:15,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 392 transitions, 792 flow. Second operand has 3 states, 3 states have (on average 409.3333333333333) internal successors, (1228), 3 states have internal predecessors, (1228), 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) [2022-11-20 12:31:15,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:31:15,211 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 408 of 442 [2022-11-20 12:31:15,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:31:15,351 INFO L130 PetriNetUnfolder]: 33/894 cut-off events. [2022-11-20 12:31:15,351 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-20 12:31:15,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 950 conditions, 894 events. 33/894 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 4347 event pairs, 15 based on Foata normal form. 0/770 useless extension candidates. Maximal degree in co-relation 946. Up to 44 conditions per place. [2022-11-20 12:31:15,359 INFO L137 encePairwiseOnDemand]: 439/442 looper letters, 13 selfloop transitions, 2 changer transitions 0/391 dead transitions. [2022-11-20 12:31:15,359 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 391 transitions, 820 flow [2022-11-20 12:31:15,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:31:15,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:31:15,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1240 transitions. [2022-11-20 12:31:15,363 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9351432880844646 [2022-11-20 12:31:15,363 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1240 transitions. [2022-11-20 12:31:15,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1240 transitions. [2022-11-20 12:31:15,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:31:15,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1240 transitions. [2022-11-20 12:31:15,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 413.3333333333333) internal successors, (1240), 3 states have internal predecessors, (1240), 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) [2022-11-20 12:31:15,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 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) [2022-11-20 12:31:15,372 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 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) [2022-11-20 12:31:15,372 INFO L175 Difference]: Start difference. First operand has 390 places, 392 transitions, 792 flow. Second operand 3 states and 1240 transitions. [2022-11-20 12:31:15,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 391 transitions, 820 flow [2022-11-20 12:31:15,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 391 transitions, 816 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:31:15,381 INFO L231 Difference]: Finished difference. Result has 389 places, 391 transitions, 790 flow [2022-11-20 12:31:15,382 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=786, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=790, PETRI_PLACES=389, PETRI_TRANSITIONS=391} [2022-11-20 12:31:15,382 INFO L288 CegarLoopForPetriNet]: 402 programPoint places, -13 predicate places. [2022-11-20 12:31:15,383 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 391 transitions, 790 flow [2022-11-20 12:31:15,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 409.3333333333333) internal successors, (1228), 3 states have internal predecessors, (1228), 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) [2022-11-20 12:31:15,384 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:31:15,384 INFO L209 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, 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, 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] [2022-11-20 12:31:15,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:31:15,384 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-11-20 12:31:15,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:31:15,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1393881168, now seen corresponding path program 1 times [2022-11-20 12:31:15,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:31:15,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86864732] [2022-11-20 12:31:15,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:31:15,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:31:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:31:15,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:31:15,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:31:15,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86864732] [2022-11-20 12:31:15,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86864732] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:31:15,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:31:15,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:31:15,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783834316] [2022-11-20 12:31:15,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:31:15,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:31:15,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:31:15,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:31:15,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:31:15,465 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 411 out of 442 [2022-11-20 12:31:15,467 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 391 transitions, 790 flow. Second operand has 3 states, 3 states have (on average 412.6666666666667) internal successors, (1238), 3 states have internal predecessors, (1238), 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) [2022-11-20 12:31:15,468 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:31:15,468 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 411 of 442 [2022-11-20 12:31:15,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:31:15,595 INFO L130 PetriNetUnfolder]: 26/863 cut-off events. [2022-11-20 12:31:15,596 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-20 12:31:15,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 899 conditions, 863 events. 26/863 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3707 event pairs, 4 based on Foata normal form. 0/749 useless extension candidates. Maximal degree in co-relation 895. Up to 22 conditions per place. [2022-11-20 12:31:15,602 INFO L137 encePairwiseOnDemand]: 438/442 looper letters, 11 selfloop transitions, 2 changer transitions 0/392 dead transitions. [2022-11-20 12:31:15,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 392 transitions, 819 flow [2022-11-20 12:31:15,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:31:15,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:31:15,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1248 transitions. [2022-11-20 12:31:15,606 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9411764705882353 [2022-11-20 12:31:15,606 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1248 transitions. [2022-11-20 12:31:15,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1248 transitions. [2022-11-20 12:31:15,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:31:15,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1248 transitions. [2022-11-20 12:31:15,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 416.0) internal successors, (1248), 3 states have internal predecessors, (1248), 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) [2022-11-20 12:31:15,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 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) [2022-11-20 12:31:15,615 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 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) [2022-11-20 12:31:15,615 INFO L175 Difference]: Start difference. First operand has 389 places, 391 transitions, 790 flow. Second operand 3 states and 1248 transitions. [2022-11-20 12:31:15,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 392 transitions, 819 flow [2022-11-20 12:31:15,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 392 transitions, 815 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:31:15,623 INFO L231 Difference]: Finished difference. Result has 388 places, 391 transitions, 796 flow [2022-11-20 12:31:15,624 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=782, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=796, PETRI_PLACES=388, PETRI_TRANSITIONS=391} [2022-11-20 12:31:15,624 INFO L288 CegarLoopForPetriNet]: 402 programPoint places, -14 predicate places. [2022-11-20 12:31:15,625 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 391 transitions, 796 flow [2022-11-20 12:31:15,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 412.6666666666667) internal successors, (1238), 3 states have internal predecessors, (1238), 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) [2022-11-20 12:31:15,626 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:31:15,626 INFO L209 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, 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, 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] [2022-11-20 12:31:15,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:31:15,626 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-11-20 12:31:15,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:31:15,627 INFO L85 PathProgramCache]: Analyzing trace with hash -583547998, now seen corresponding path program 1 times [2022-11-20 12:31:15,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:31:15,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109968680] [2022-11-20 12:31:15,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:31:15,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:31:15,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:31:15,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:31:15,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:31:15,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109968680] [2022-11-20 12:31:15,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109968680] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:31:15,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:31:15,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:31:15,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473146374] [2022-11-20 12:31:15,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:31:15,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:31:15,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:31:15,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:31:15,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:31:15,682 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 411 out of 442 [2022-11-20 12:31:15,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 391 transitions, 796 flow. Second operand has 3 states, 3 states have (on average 413.0) internal successors, (1239), 3 states have internal predecessors, (1239), 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) [2022-11-20 12:31:15,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:31:15,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 411 of 442 [2022-11-20 12:31:15,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:31:15,809 INFO L130 PetriNetUnfolder]: 27/861 cut-off events. [2022-11-20 12:31:15,809 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-20 12:31:15,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 902 conditions, 861 events. 27/861 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 4086 event pairs, 3 based on Foata normal form. 0/753 useless extension candidates. Maximal degree in co-relation 898. Up to 22 conditions per place. [2022-11-20 12:31:15,817 INFO L137 encePairwiseOnDemand]: 438/442 looper letters, 11 selfloop transitions, 2 changer transitions 0/392 dead transitions. [2022-11-20 12:31:15,817 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 392 transitions, 825 flow [2022-11-20 12:31:15,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:31:15,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:31:15,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1248 transitions. [2022-11-20 12:31:15,821 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9411764705882353 [2022-11-20 12:31:15,821 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1248 transitions. [2022-11-20 12:31:15,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1248 transitions. [2022-11-20 12:31:15,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:31:15,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1248 transitions. [2022-11-20 12:31:15,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 416.0) internal successors, (1248), 3 states have internal predecessors, (1248), 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) [2022-11-20 12:31:15,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 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) [2022-11-20 12:31:15,829 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 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) [2022-11-20 12:31:15,829 INFO L175 Difference]: Start difference. First operand has 388 places, 391 transitions, 796 flow. Second operand 3 states and 1248 transitions. [2022-11-20 12:31:15,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 392 transitions, 825 flow [2022-11-20 12:31:15,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 392 transitions, 825 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:31:15,836 INFO L231 Difference]: Finished difference. Result has 389 places, 391 transitions, 806 flow [2022-11-20 12:31:15,837 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=806, PETRI_PLACES=389, PETRI_TRANSITIONS=391} [2022-11-20 12:31:15,838 INFO L288 CegarLoopForPetriNet]: 402 programPoint places, -13 predicate places. [2022-11-20 12:31:15,838 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 391 transitions, 806 flow [2022-11-20 12:31:15,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 413.0) internal successors, (1239), 3 states have internal predecessors, (1239), 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) [2022-11-20 12:31:15,839 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:31:15,839 INFO L209 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, 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, 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, 1, 1, 1, 1] [2022-11-20 12:31:15,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:31:15,840 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-11-20 12:31:15,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:31:15,840 INFO L85 PathProgramCache]: Analyzing trace with hash -827319148, now seen corresponding path program 1 times [2022-11-20 12:31:15,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:31:15,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315233043] [2022-11-20 12:31:15,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:31:15,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:31:15,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:31:15,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:31:15,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:31:15,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315233043] [2022-11-20 12:31:15,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315233043] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:31:15,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:31:15,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:31:15,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361642994] [2022-11-20 12:31:15,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:31:15,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:31:15,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:31:15,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:31:15,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:31:15,952 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 384 out of 442 [2022-11-20 12:31:15,954 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 391 transitions, 806 flow. Second operand has 5 states, 5 states have (on average 387.6) internal successors, (1938), 5 states have internal predecessors, (1938), 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) [2022-11-20 12:31:15,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:31:15,955 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 384 of 442 [2022-11-20 12:31:15,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:31:16,147 INFO L130 PetriNetUnfolder]: 14/600 cut-off events. [2022-11-20 12:31:16,147 INFO L131 PetriNetUnfolder]: For 3/4 co-relation queries the response was YES. [2022-11-20 12:31:16,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 676 conditions, 600 events. 14/600 cut-off events. For 3/4 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1840 event pairs, 0 based on Foata normal form. 0/534 useless extension candidates. Maximal degree in co-relation 671. Up to 36 conditions per place. [2022-11-20 12:31:16,153 INFO L137 encePairwiseOnDemand]: 432/442 looper letters, 48 selfloop transitions, 8 changer transitions 0/409 dead transitions. [2022-11-20 12:31:16,154 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 409 transitions, 954 flow [2022-11-20 12:31:16,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:31:16,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:31:16,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1978 transitions. [2022-11-20 12:31:16,159 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8950226244343892 [2022-11-20 12:31:16,159 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1978 transitions. [2022-11-20 12:31:16,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1978 transitions. [2022-11-20 12:31:16,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:31:16,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1978 transitions. [2022-11-20 12:31:16,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 395.6) internal successors, (1978), 5 states have internal predecessors, (1978), 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) [2022-11-20 12:31:16,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 442.0) internal successors, (2652), 6 states have internal predecessors, (2652), 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) [2022-11-20 12:31:16,171 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 442.0) internal successors, (2652), 6 states have internal predecessors, (2652), 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) [2022-11-20 12:31:16,171 INFO L175 Difference]: Start difference. First operand has 389 places, 391 transitions, 806 flow. Second operand 5 states and 1978 transitions. [2022-11-20 12:31:16,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 409 transitions, 954 flow [2022-11-20 12:31:16,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 409 transitions, 954 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:31:16,179 INFO L231 Difference]: Finished difference. Result has 394 places, 393 transitions, 838 flow [2022-11-20 12:31:16,180 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=838, PETRI_PLACES=394, PETRI_TRANSITIONS=393} [2022-11-20 12:31:16,181 INFO L288 CegarLoopForPetriNet]: 402 programPoint places, -8 predicate places. [2022-11-20 12:31:16,181 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 393 transitions, 838 flow [2022-11-20 12:31:16,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 387.6) internal successors, (1938), 5 states have internal predecessors, (1938), 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) [2022-11-20 12:31:16,183 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:31:16,183 INFO L209 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, 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, 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, 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] [2022-11-20 12:31:16,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 12:31:16,183 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-11-20 12:31:16,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:31:16,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1396532050, now seen corresponding path program 1 times [2022-11-20 12:31:16,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:31:16,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369537578] [2022-11-20 12:31:16,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:31:16,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:31:16,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:31:16,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:31:16,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:31:16,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369537578] [2022-11-20 12:31:16,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369537578] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:31:16,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102469815] [2022-11-20 12:31:16,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:31:16,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:31:16,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b8714-f2d8-42ce-86d7-74b85d8baf55/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:31:16,422 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b8714-f2d8-42ce-86d7-74b85d8baf55/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:31:16,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b8714-f2d8-42ce-86d7-74b85d8baf55/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:31:16,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:31:16,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:31:16,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:31:16,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:31:16,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:31:16,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:31:16,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102469815] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:31:16,892 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:31:16,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-20 12:31:16,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551487051] [2022-11-20 12:31:16,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:31:16,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 12:31:16,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:31:16,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 12:31:16,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:31:16,902 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 382 out of 442 [2022-11-20 12:31:16,910 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 393 transitions, 838 flow. Second operand has 15 states, 15 states have (on average 386.53333333333336) internal successors, (5798), 15 states have internal predecessors, (5798), 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) [2022-11-20 12:31:16,910 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:31:16,910 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 382 of 442 [2022-11-20 12:31:16,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:31:17,349 INFO L130 PetriNetUnfolder]: 14/632 cut-off events. [2022-11-20 12:31:17,349 INFO L131 PetriNetUnfolder]: For 11/12 co-relation queries the response was YES. [2022-11-20 12:31:17,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 752 conditions, 632 events. 14/632 cut-off events. For 11/12 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1792 event pairs, 0 based on Foata normal form. 4/572 useless extension candidates. Maximal degree in co-relation 745. Up to 20 conditions per place. [2022-11-20 12:31:17,356 INFO L137 encePairwiseOnDemand]: 426/442 looper letters, 60 selfloop transitions, 22 changer transitions 0/433 dead transitions. [2022-11-20 12:31:17,356 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 433 transitions, 1086 flow [2022-11-20 12:31:17,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:31:17,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 12:31:17,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4288 transitions. [2022-11-20 12:31:17,367 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8819415878239407 [2022-11-20 12:31:17,367 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4288 transitions. [2022-11-20 12:31:17,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4288 transitions. [2022-11-20 12:31:17,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:31:17,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4288 transitions. [2022-11-20 12:31:17,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 389.8181818181818) internal successors, (4288), 11 states have internal predecessors, (4288), 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) [2022-11-20 12:31:17,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 442.0) internal successors, (5304), 12 states have internal predecessors, (5304), 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) [2022-11-20 12:31:17,394 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 442.0) internal successors, (5304), 12 states have internal predecessors, (5304), 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) [2022-11-20 12:31:17,394 INFO L175 Difference]: Start difference. First operand has 394 places, 393 transitions, 838 flow. Second operand 11 states and 4288 transitions. [2022-11-20 12:31:17,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 433 transitions, 1086 flow [2022-11-20 12:31:17,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 433 transitions, 1074 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:31:17,405 INFO L231 Difference]: Finished difference. Result has 404 places, 405 transitions, 937 flow [2022-11-20 12:31:17,406 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=826, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=937, PETRI_PLACES=404, PETRI_TRANSITIONS=405} [2022-11-20 12:31:17,407 INFO L288 CegarLoopForPetriNet]: 402 programPoint places, 2 predicate places. [2022-11-20 12:31:17,407 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 405 transitions, 937 flow [2022-11-20 12:31:17,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 386.53333333333336) internal successors, (5798), 15 states have internal predecessors, (5798), 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) [2022-11-20 12:31:17,409 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:31:17,410 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 1, 1, 1, 1] [2022-11-20 12:31:17,427 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b8714-f2d8-42ce-86d7-74b85d8baf55/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 12:31:17,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b8714-f2d8-42ce-86d7-74b85d8baf55/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:31:17,616 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-11-20 12:31:17,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:31:17,616 INFO L85 PathProgramCache]: Analyzing trace with hash 2110917710, now seen corresponding path program 2 times [2022-11-20 12:31:17,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:31:17,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56975960] [2022-11-20 12:31:17,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:31:17,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:31:17,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:31:18,152 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-20 12:31:18,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:31:18,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56975960] [2022-11-20 12:31:18,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56975960] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:31:18,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404759121] [2022-11-20 12:31:18,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:31:18,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:31:18,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b8714-f2d8-42ce-86d7-74b85d8baf55/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:31:18,155 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b8714-f2d8-42ce-86d7-74b85d8baf55/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:31:18,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b8714-f2d8-42ce-86d7-74b85d8baf55/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:31:18,319 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:31:18,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:31:18,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 12:31:18,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:31:18,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:31:18,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:31:18,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 12:31:18,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:31:18,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:31:18,747 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:31:18,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-20 12:31:18,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:31:18,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:31:18,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:31:18,797 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:31:18,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-20 12:31:18,838 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-20 12:31:18,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:31:18,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404759121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:31:18,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:31:18,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 16 [2022-11-20 12:31:18,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662538074] [2022-11-20 12:31:18,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:31:18,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:31:18,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:31:18,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:31:18,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:31:18,845 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 366 out of 442 [2022-11-20 12:31:18,849 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 405 transitions, 937 flow. Second operand has 7 states, 7 states have (on average 369.0) internal successors, (2583), 7 states have internal predecessors, (2583), 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) [2022-11-20 12:31:18,849 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:31:18,849 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 366 of 442 [2022-11-20 12:31:18,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:31:21,421 INFO L130 PetriNetUnfolder]: 2581/10631 cut-off events. [2022-11-20 12:31:21,422 INFO L131 PetriNetUnfolder]: For 28/129 co-relation queries the response was YES. [2022-11-20 12:31:21,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14690 conditions, 10631 events. 2581/10631 cut-off events. For 28/129 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 106783 event pairs, 780 based on Foata normal form. 34/9175 useless extension candidates. Maximal degree in co-relation 14680. Up to 1319 conditions per place. [2022-11-20 12:31:21,765 INFO L137 encePairwiseOnDemand]: 436/442 looper letters, 144 selfloop transitions, 5 changer transitions 0/500 dead transitions. [2022-11-20 12:31:21,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 500 transitions, 1425 flow [2022-11-20 12:31:21,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:31:21,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:31:21,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2712 transitions. [2022-11-20 12:31:21,789 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8765352294764059 [2022-11-20 12:31:21,789 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2712 transitions. [2022-11-20 12:31:21,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2712 transitions. [2022-11-20 12:31:21,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:31:21,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2712 transitions. [2022-11-20 12:31:21,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 387.42857142857144) internal successors, (2712), 7 states have internal predecessors, (2712), 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) [2022-11-20 12:31:21,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 442.0) internal successors, (3536), 8 states have internal predecessors, (3536), 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) [2022-11-20 12:31:21,805 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 442.0) internal successors, (3536), 8 states have internal predecessors, (3536), 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) [2022-11-20 12:31:21,805 INFO L175 Difference]: Start difference. First operand has 404 places, 405 transitions, 937 flow. Second operand 7 states and 2712 transitions. [2022-11-20 12:31:21,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 500 transitions, 1425 flow [2022-11-20 12:31:21,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 500 transitions, 1408 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-20 12:31:21,819 INFO L231 Difference]: Finished difference. Result has 406 places, 404 transitions, 928 flow [2022-11-20 12:31:21,820 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=918, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=928, PETRI_PLACES=406, PETRI_TRANSITIONS=404} [2022-11-20 12:31:21,821 INFO L288 CegarLoopForPetriNet]: 402 programPoint places, 4 predicate places. [2022-11-20 12:31:21,821 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 404 transitions, 928 flow [2022-11-20 12:31:21,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 369.0) internal successors, (2583), 7 states have internal predecessors, (2583), 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) [2022-11-20 12:31:21,822 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:31:21,823 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 1, 1, 1, 1, 1] [2022-11-20 12:31:21,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b8714-f2d8-42ce-86d7-74b85d8baf55/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:31:22,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b8714-f2d8-42ce-86d7-74b85d8baf55/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 12:31:22,029 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-11-20 12:31:22,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:31:22,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1734871073, now seen corresponding path program 1 times [2022-11-20 12:31:22,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:31:22,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862743315] [2022-11-20 12:31:22,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:31:22,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:31:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:31:22,259 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-20 12:31:22,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:31:22,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862743315] [2022-11-20 12:31:22,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862743315] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:31:22,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:31:22,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:31:22,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799888342] [2022-11-20 12:31:22,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:31:22,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:31:22,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:31:22,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:31:22,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:31:22,263 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 394 out of 442 [2022-11-20 12:31:22,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 404 transitions, 928 flow. Second operand has 3 states, 3 states have (on average 395.3333333333333) internal successors, (1186), 3 states have internal predecessors, (1186), 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) [2022-11-20 12:31:22,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:31:22,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 394 of 442 [2022-11-20 12:31:22,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:31:22,424 INFO L130 PetriNetUnfolder]: 33/737 cut-off events. [2022-11-20 12:31:22,424 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-11-20 12:31:22,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 912 conditions, 737 events. 33/737 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2733 event pairs, 14 based on Foata normal form. 0/663 useless extension candidates. Maximal degree in co-relation 902. Up to 71 conditions per place. [2022-11-20 12:31:22,431 INFO L137 encePairwiseOnDemand]: 439/442 looper letters, 28 selfloop transitions, 2 changer transitions 0/404 dead transitions. [2022-11-20 12:31:22,431 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 404 transitions, 989 flow [2022-11-20 12:31:22,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:31:22,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:31:22,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1213 transitions. [2022-11-20 12:31:22,434 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9147812971342383 [2022-11-20 12:31:22,434 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1213 transitions. [2022-11-20 12:31:22,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1213 transitions. [2022-11-20 12:31:22,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:31:22,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1213 transitions. [2022-11-20 12:31:22,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 404.3333333333333) internal successors, (1213), 3 states have internal predecessors, (1213), 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) [2022-11-20 12:31:22,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 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) [2022-11-20 12:31:22,441 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 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) [2022-11-20 12:31:22,441 INFO L175 Difference]: Start difference. First operand has 406 places, 404 transitions, 928 flow. Second operand 3 states and 1213 transitions. [2022-11-20 12:31:22,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 404 transitions, 989 flow [2022-11-20 12:31:22,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 404 transitions, 980 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:31:22,481 INFO L231 Difference]: Finished difference. Result has 402 places, 403 transitions, 921 flow [2022-11-20 12:31:22,482 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=917, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=921, PETRI_PLACES=402, PETRI_TRANSITIONS=403} [2022-11-20 12:31:22,484 INFO L288 CegarLoopForPetriNet]: 402 programPoint places, 0 predicate places. [2022-11-20 12:31:22,484 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 403 transitions, 921 flow [2022-11-20 12:31:22,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 395.3333333333333) internal successors, (1186), 3 states have internal predecessors, (1186), 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) [2022-11-20 12:31:22,485 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:31:22,486 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:31:22,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 12:31:22,486 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-11-20 12:31:22,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:31:22,487 INFO L85 PathProgramCache]: Analyzing trace with hash 336570330, now seen corresponding path program 1 times [2022-11-20 12:31:22,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:31:22,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710180577] [2022-11-20 12:31:22,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:31:22,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:31:22,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:31:22,612 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-20 12:31:22,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:31:22,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710180577] [2022-11-20 12:31:22,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710180577] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:31:22,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:31:22,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:31:22,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898018413] [2022-11-20 12:31:22,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:31:22,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:31:22,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:31:22,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:31:22,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:31:22,617 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 411 out of 442 [2022-11-20 12:31:22,618 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 403 transitions, 921 flow. Second operand has 3 states, 3 states have (on average 412.6666666666667) internal successors, (1238), 3 states have internal predecessors, (1238), 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) [2022-11-20 12:31:22,619 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:31:22,619 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 411 of 442 [2022-11-20 12:31:22,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:31:22,912 INFO L130 PetriNetUnfolder]: 43/1183 cut-off events. [2022-11-20 12:31:22,912 INFO L131 PetriNetUnfolder]: For 19/20 co-relation queries the response was YES. [2022-11-20 12:31:22,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1309 conditions, 1183 events. 43/1183 cut-off events. For 19/20 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 5411 event pairs, 2 based on Foata normal form. 0/1038 useless extension candidates. Maximal degree in co-relation 1299. Up to 41 conditions per place. [2022-11-20 12:31:22,957 INFO L137 encePairwiseOnDemand]: 438/442 looper letters, 13 selfloop transitions, 2 changer transitions 0/406 dead transitions. [2022-11-20 12:31:22,957 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 406 transitions, 960 flow [2022-11-20 12:31:22,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:31:22,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:31:22,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1250 transitions. [2022-11-20 12:31:22,961 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.942684766214178 [2022-11-20 12:31:22,961 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1250 transitions. [2022-11-20 12:31:22,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1250 transitions. [2022-11-20 12:31:22,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:31:22,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1250 transitions. [2022-11-20 12:31:22,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 416.6666666666667) internal successors, (1250), 3 states have internal predecessors, (1250), 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) [2022-11-20 12:31:22,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 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) [2022-11-20 12:31:22,968 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 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) [2022-11-20 12:31:22,968 INFO L175 Difference]: Start difference. First operand has 402 places, 403 transitions, 921 flow. Second operand 3 states and 1250 transitions. [2022-11-20 12:31:22,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 406 transitions, 960 flow [2022-11-20 12:31:22,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 406 transitions, 956 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:31:22,977 INFO L231 Difference]: Finished difference. Result has 401 places, 403 transitions, 927 flow [2022-11-20 12:31:22,978 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=913, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=927, PETRI_PLACES=401, PETRI_TRANSITIONS=403} [2022-11-20 12:31:22,979 INFO L288 CegarLoopForPetriNet]: 402 programPoint places, -1 predicate places. [2022-11-20 12:31:22,979 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 403 transitions, 927 flow [2022-11-20 12:31:22,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 412.6666666666667) internal successors, (1238), 3 states have internal predecessors, (1238), 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) [2022-11-20 12:31:22,980 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:31:22,980 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:31:22,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 12:31:22,981 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err9ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-11-20 12:31:22,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:31:22,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1843714889, now seen corresponding path program 1 times [2022-11-20 12:31:22,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:31:22,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857270296] [2022-11-20 12:31:22,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:31:22,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:31:23,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:31:23,077 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-20 12:31:23,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:31:23,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857270296] [2022-11-20 12:31:23,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857270296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:31:23,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:31:23,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:31:23,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28988746] [2022-11-20 12:31:23,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:31:23,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:31:23,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:31:23,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:31:23,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:31:23,083 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 442 [2022-11-20 12:31:23,084 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 403 transitions, 927 flow. Second operand has 3 states, 3 states have (on average 397.6666666666667) internal successors, (1193), 3 states have internal predecessors, (1193), 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) [2022-11-20 12:31:23,085 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:31:23,085 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 442 [2022-11-20 12:31:23,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:31:23,352 INFO L130 PetriNetUnfolder]: 49/1197 cut-off events. [2022-11-20 12:31:23,353 INFO L131 PetriNetUnfolder]: For 16/35 co-relation queries the response was YES. [2022-11-20 12:31:23,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1405 conditions, 1197 events. 49/1197 cut-off events. For 16/35 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 5395 event pairs, 12 based on Foata normal form. 2/1074 useless extension candidates. Maximal degree in co-relation 1395. Up to 61 conditions per place. [2022-11-20 12:31:23,366 INFO L137 encePairwiseOnDemand]: 432/442 looper letters, 21 selfloop transitions, 5 changer transitions 0/402 dead transitions. [2022-11-20 12:31:23,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 402 transitions, 978 flow [2022-11-20 12:31:23,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:31:23,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:31:23,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1219 transitions. [2022-11-20 12:31:23,370 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9193061840120663 [2022-11-20 12:31:23,371 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1219 transitions. [2022-11-20 12:31:23,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1219 transitions. [2022-11-20 12:31:23,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:31:23,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1219 transitions. [2022-11-20 12:31:23,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 406.3333333333333) internal successors, (1219), 3 states have internal predecessors, (1219), 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) [2022-11-20 12:31:23,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 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) [2022-11-20 12:31:23,378 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 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) [2022-11-20 12:31:23,379 INFO L175 Difference]: Start difference. First operand has 401 places, 403 transitions, 927 flow. Second operand 3 states and 1219 transitions. [2022-11-20 12:31:23,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 402 transitions, 978 flow [2022-11-20 12:31:23,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 402 transitions, 978 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:31:23,388 INFO L231 Difference]: Finished difference. Result has 400 places, 401 transitions, 949 flow [2022-11-20 12:31:23,390 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=917, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=949, PETRI_PLACES=400, PETRI_TRANSITIONS=401} [2022-11-20 12:31:23,390 INFO L288 CegarLoopForPetriNet]: 402 programPoint places, -2 predicate places. [2022-11-20 12:31:23,391 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 401 transitions, 949 flow [2022-11-20 12:31:23,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 397.6666666666667) internal successors, (1193), 3 states have internal predecessors, (1193), 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) [2022-11-20 12:31:23,391 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:31:23,392 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:31:23,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 12:31:23,392 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-11-20 12:31:23,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:31:23,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1946456246, now seen corresponding path program 1 times [2022-11-20 12:31:23,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:31:23,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533947779] [2022-11-20 12:31:23,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:31:23,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:31:23,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:31:23,509 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-20 12:31:23,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:31:23,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533947779] [2022-11-20 12:31:23,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533947779] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:31:23,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:31:23,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:31:23,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122564484] [2022-11-20 12:31:23,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:31:23,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:31:23,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:31:23,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:31:23,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:31:23,514 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 394 out of 442 [2022-11-20 12:31:23,515 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 401 transitions, 949 flow. Second operand has 3 states, 3 states have (on average 395.6666666666667) internal successors, (1187), 3 states have internal predecessors, (1187), 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) [2022-11-20 12:31:23,515 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:31:23,515 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 394 of 442 [2022-11-20 12:31:23,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:31:23,790 INFO L130 PetriNetUnfolder]: 74/1182 cut-off events. [2022-11-20 12:31:23,790 INFO L131 PetriNetUnfolder]: For 70/72 co-relation queries the response was YES. [2022-11-20 12:31:23,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1469 conditions, 1182 events. 74/1182 cut-off events. For 70/72 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 5895 event pairs, 23 based on Foata normal form. 0/1039 useless extension candidates. Maximal degree in co-relation 1457. Up to 151 conditions per place. [2022-11-20 12:31:23,803 INFO L137 encePairwiseOnDemand]: 439/442 looper letters, 27 selfloop transitions, 2 changer transitions 0/401 dead transitions. [2022-11-20 12:31:23,803 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 401 transitions, 1008 flow [2022-11-20 12:31:23,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:31:23,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:31:23,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1212 transitions. [2022-11-20 12:31:23,807 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9140271493212669 [2022-11-20 12:31:23,807 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1212 transitions. [2022-11-20 12:31:23,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1212 transitions. [2022-11-20 12:31:23,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:31:23,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1212 transitions. [2022-11-20 12:31:23,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 404.0) internal successors, (1212), 3 states have internal predecessors, (1212), 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) [2022-11-20 12:31:23,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 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) [2022-11-20 12:31:23,814 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 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) [2022-11-20 12:31:23,814 INFO L175 Difference]: Start difference. First operand has 400 places, 401 transitions, 949 flow. Second operand 3 states and 1212 transitions. [2022-11-20 12:31:23,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 401 transitions, 1008 flow [2022-11-20 12:31:23,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 401 transitions, 998 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:31:23,823 INFO L231 Difference]: Finished difference. Result has 399 places, 400 transitions, 941 flow [2022-11-20 12:31:23,824 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=937, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=941, PETRI_PLACES=399, PETRI_TRANSITIONS=400} [2022-11-20 12:31:23,825 INFO L288 CegarLoopForPetriNet]: 402 programPoint places, -3 predicate places. [2022-11-20 12:31:23,825 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 400 transitions, 941 flow [2022-11-20 12:31:23,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 395.6666666666667) internal successors, (1187), 3 states have internal predecessors, (1187), 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) [2022-11-20 12:31:23,826 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:31:23,826 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:31:23,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 12:31:23,827 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err10ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-11-20 12:31:23,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:31:23,829 INFO L85 PathProgramCache]: Analyzing trace with hash 2099113054, now seen corresponding path program 1 times [2022-11-20 12:31:23,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:31:23,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984631027] [2022-11-20 12:31:23,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:31:23,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:31:23,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:31:23,993 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-20 12:31:23,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:31:23,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984631027] [2022-11-20 12:31:23,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984631027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:31:23,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:31:23,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:31:23,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278765298] [2022-11-20 12:31:23,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:31:23,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:31:23,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:31:23,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:31:23,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:31:23,998 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 397 out of 442 [2022-11-20 12:31:24,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 400 transitions, 941 flow. Second operand has 4 states, 4 states have (on average 398.25) internal successors, (1593), 4 states have internal predecessors, (1593), 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) [2022-11-20 12:31:24,001 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:31:24,001 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 397 of 442 [2022-11-20 12:31:24,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:31:24,475 INFO L130 PetriNetUnfolder]: 76/1394 cut-off events. [2022-11-20 12:31:24,476 INFO L131 PetriNetUnfolder]: For 20/72 co-relation queries the response was YES. [2022-11-20 12:31:24,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1760 conditions, 1394 events. 76/1394 cut-off events. For 20/72 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 6974 event pairs, 22 based on Foata normal form. 3/1261 useless extension candidates. Maximal degree in co-relation 1748. Up to 94 conditions per place. [2022-11-20 12:31:24,488 INFO L137 encePairwiseOnDemand]: 437/442 looper letters, 50 selfloop transitions, 4 changer transitions 0/426 dead transitions. [2022-11-20 12:31:24,488 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 426 transitions, 1106 flow [2022-11-20 12:31:24,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:31:24,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:31:24,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2040 transitions. [2022-11-20 12:31:24,493 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9230769230769231 [2022-11-20 12:31:24,493 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2040 transitions. [2022-11-20 12:31:24,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2040 transitions. [2022-11-20 12:31:24,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:31:24,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2040 transitions. [2022-11-20 12:31:24,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 408.0) internal successors, (2040), 5 states have internal predecessors, (2040), 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) [2022-11-20 12:31:24,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 442.0) internal successors, (2652), 6 states have internal predecessors, (2652), 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) [2022-11-20 12:31:24,503 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 442.0) internal successors, (2652), 6 states have internal predecessors, (2652), 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) [2022-11-20 12:31:24,504 INFO L175 Difference]: Start difference. First operand has 399 places, 400 transitions, 941 flow. Second operand 5 states and 2040 transitions. [2022-11-20 12:31:24,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 426 transitions, 1106 flow [2022-11-20 12:31:24,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 426 transitions, 1102 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:31:24,512 INFO L231 Difference]: Finished difference. Result has 404 places, 402 transitions, 962 flow [2022-11-20 12:31:24,513 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=933, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=962, PETRI_PLACES=404, PETRI_TRANSITIONS=402} [2022-11-20 12:31:24,513 INFO L288 CegarLoopForPetriNet]: 402 programPoint places, 2 predicate places. [2022-11-20 12:31:24,514 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 402 transitions, 962 flow [2022-11-20 12:31:24,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 398.25) internal successors, (1593), 4 states have internal predecessors, (1593), 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) [2022-11-20 12:31:24,515 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:31:24,515 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:31:24,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 12:31:24,515 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err10ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-11-20 12:31:24,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:31:24,516 INFO L85 PathProgramCache]: Analyzing trace with hash 247996641, now seen corresponding path program 1 times [2022-11-20 12:31:24,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:31:24,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461185138] [2022-11-20 12:31:24,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:31:24,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:31:24,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:31:24,613 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-20 12:31:24,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:31:24,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461185138] [2022-11-20 12:31:24,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461185138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:31:24,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:31:24,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:31:24,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585222981] [2022-11-20 12:31:24,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:31:24,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:31:24,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:31:24,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:31:24,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:31:24,617 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 394 out of 442 [2022-11-20 12:31:24,618 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 402 transitions, 962 flow. Second operand has 3 states, 3 states have (on average 396.6666666666667) internal successors, (1190), 3 states have internal predecessors, (1190), 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) [2022-11-20 12:31:24,619 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:31:24,619 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 394 of 442 [2022-11-20 12:31:24,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:31:24,933 INFO L130 PetriNetUnfolder]: 58/1340 cut-off events. [2022-11-20 12:31:24,934 INFO L131 PetriNetUnfolder]: For 48/91 co-relation queries the response was YES. [2022-11-20 12:31:24,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1684 conditions, 1340 events. 58/1340 cut-off events. For 48/91 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 6475 event pairs, 23 based on Foata normal form. 2/1223 useless extension candidates. Maximal degree in co-relation 1670. Up to 127 conditions per place. [2022-11-20 12:31:24,949 INFO L137 encePairwiseOnDemand]: 439/442 looper letters, 24 selfloop transitions, 2 changer transitions 0/402 dead transitions. [2022-11-20 12:31:24,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 402 transitions, 1015 flow [2022-11-20 12:31:24,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:31:24,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:31:24,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1207 transitions. [2022-11-20 12:31:24,952 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9102564102564102 [2022-11-20 12:31:24,952 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1207 transitions. [2022-11-20 12:31:24,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1207 transitions. [2022-11-20 12:31:24,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:31:24,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1207 transitions. [2022-11-20 12:31:24,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 402.3333333333333) internal successors, (1207), 3 states have internal predecessors, (1207), 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) [2022-11-20 12:31:24,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 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) [2022-11-20 12:31:24,959 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 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) [2022-11-20 12:31:24,959 INFO L175 Difference]: Start difference. First operand has 404 places, 402 transitions, 962 flow. Second operand 3 states and 1207 transitions. [2022-11-20 12:31:24,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 402 transitions, 1015 flow [2022-11-20 12:31:24,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 402 transitions, 1015 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:31:24,967 INFO L231 Difference]: Finished difference. Result has 405 places, 401 transitions, 964 flow [2022-11-20 12:31:24,968 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=960, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=964, PETRI_PLACES=405, PETRI_TRANSITIONS=401} [2022-11-20 12:31:24,968 INFO L288 CegarLoopForPetriNet]: 402 programPoint places, 3 predicate places. [2022-11-20 12:31:24,969 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 401 transitions, 964 flow [2022-11-20 12:31:24,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 396.6666666666667) internal successors, (1190), 3 states have internal predecessors, (1190), 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) [2022-11-20 12:31:24,969 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:31:24,970 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:31:24,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 12:31:24,970 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-11-20 12:31:24,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:31:24,971 INFO L85 PathProgramCache]: Analyzing trace with hash 352996643, now seen corresponding path program 1 times [2022-11-20 12:31:24,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:31:24,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608138063] [2022-11-20 12:31:24,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:31:24,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:31:25,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:31:25,387 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-20 12:31:25,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:31:25,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608138063] [2022-11-20 12:31:25,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608138063] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:31:25,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258450259] [2022-11-20 12:31:25,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:31:25,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:31:25,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b8714-f2d8-42ce-86d7-74b85d8baf55/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:31:25,391 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b8714-f2d8-42ce-86d7-74b85d8baf55/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:31:25,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b8714-f2d8-42ce-86d7-74b85d8baf55/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:31:25,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:31:25,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:31:25,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:31:26,024 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-20 12:31:26,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:31:26,228 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-20 12:31:26,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258450259] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:31:26,228 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:31:26,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-20 12:31:26,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444020632] [2022-11-20 12:31:26,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:31:26,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 12:31:26,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:31:26,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 12:31:26,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-11-20 12:31:26,238 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 382 out of 442 [2022-11-20 12:31:26,245 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 401 transitions, 964 flow. Second operand has 22 states, 22 states have (on average 386.8636363636364) internal successors, (8511), 22 states have internal predecessors, (8511), 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) [2022-11-20 12:31:26,245 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:31:26,245 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 382 of 442 [2022-11-20 12:31:26,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:31:26,981 INFO L130 PetriNetUnfolder]: 28/1202 cut-off events. [2022-11-20 12:31:26,981 INFO L131 PetriNetUnfolder]: For 57/65 co-relation queries the response was YES. [2022-11-20 12:31:26,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1511 conditions, 1202 events. 28/1202 cut-off events. For 57/65 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4761 event pairs, 1 based on Foata normal form. 4/1100 useless extension candidates. Maximal degree in co-relation 1496. Up to 29 conditions per place. [2022-11-20 12:31:26,991 INFO L137 encePairwiseOnDemand]: 426/442 looper letters, 88 selfloop transitions, 34 changer transitions 0/469 dead transitions. [2022-11-20 12:31:26,992 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 469 transitions, 1400 flow [2022-11-20 12:31:26,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 12:31:26,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-20 12:31:27,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 6620 transitions. [2022-11-20 12:31:27,004 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8810220920947565 [2022-11-20 12:31:27,004 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 6620 transitions. [2022-11-20 12:31:27,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 6620 transitions. [2022-11-20 12:31:27,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:31:27,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 6620 transitions. [2022-11-20 12:31:27,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 389.4117647058824) internal successors, (6620), 17 states have internal predecessors, (6620), 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) [2022-11-20 12:31:27,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 442.0) internal successors, (7956), 18 states have internal predecessors, (7956), 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) [2022-11-20 12:31:27,034 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 442.0) internal successors, (7956), 18 states have internal predecessors, (7956), 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) [2022-11-20 12:31:27,034 INFO L175 Difference]: Start difference. First operand has 405 places, 401 transitions, 964 flow. Second operand 17 states and 6620 transitions. [2022-11-20 12:31:27,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 469 transitions, 1400 flow [2022-11-20 12:31:27,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 469 transitions, 1396 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:31:27,044 INFO L231 Difference]: Finished difference. Result has 422 places, 415 transitions, 1135 flow [2022-11-20 12:31:27,045 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=960, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1135, PETRI_PLACES=422, PETRI_TRANSITIONS=415} [2022-11-20 12:31:27,045 INFO L288 CegarLoopForPetriNet]: 402 programPoint places, 20 predicate places. [2022-11-20 12:31:27,045 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 415 transitions, 1135 flow [2022-11-20 12:31:27,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 386.8636363636364) internal successors, (8511), 22 states have internal predecessors, (8511), 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) [2022-11-20 12:31:27,048 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:31:27,049 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:31:27,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b8714-f2d8-42ce-86d7-74b85d8baf55/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:31:27,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b8714-f2d8-42ce-86d7-74b85d8baf55/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 12:31:27,255 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-11-20 12:31:27,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:31:27,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1801497057, now seen corresponding path program 2 times [2022-11-20 12:31:27,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:31:27,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802115347] [2022-11-20 12:31:27,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:31:27,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:31:27,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:31:28,476 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2022-11-20 12:31:28,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:31:28,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802115347] [2022-11-20 12:31:28,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802115347] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:31:28,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:31:28,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:31:28,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252572345] [2022-11-20 12:31:28,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:31:28,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:31:28,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:31:28,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:31:28,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:31:28,482 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 362 out of 442 [2022-11-20 12:31:28,485 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 415 transitions, 1135 flow. Second operand has 6 states, 6 states have (on average 365.5) internal successors, (2193), 6 states have internal predecessors, (2193), 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) [2022-11-20 12:31:28,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:31:28,486 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 362 of 442 [2022-11-20 12:31:28,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:31:34,115 INFO L130 PetriNetUnfolder]: 6486/23527 cut-off events. [2022-11-20 12:31:34,116 INFO L131 PetriNetUnfolder]: For 1022/1037 co-relation queries the response was YES. [2022-11-20 12:31:34,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36273 conditions, 23527 events. 6486/23527 cut-off events. For 1022/1037 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 250793 event pairs, 1987 based on Foata normal form. 0/21135 useless extension candidates. Maximal degree in co-relation 36255. Up to 5130 conditions per place. [2022-11-20 12:31:34,317 INFO L137 encePairwiseOnDemand]: 436/442 looper letters, 130 selfloop transitions, 6 changer transitions 0/490 dead transitions. [2022-11-20 12:31:34,317 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 490 transitions, 1565 flow [2022-11-20 12:31:34,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:31:34,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:31:34,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2307 transitions. [2022-11-20 12:31:34,323 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8699095022624435 [2022-11-20 12:31:34,323 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2307 transitions. [2022-11-20 12:31:34,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2307 transitions. [2022-11-20 12:31:34,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:31:34,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2307 transitions. [2022-11-20 12:31:34,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 384.5) internal successors, (2307), 6 states have internal predecessors, (2307), 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) [2022-11-20 12:31:34,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 442.0) internal successors, (3094), 7 states have internal predecessors, (3094), 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) [2022-11-20 12:31:34,336 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 442.0) internal successors, (3094), 7 states have internal predecessors, (3094), 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) [2022-11-20 12:31:34,336 INFO L175 Difference]: Start difference. First operand has 422 places, 415 transitions, 1135 flow. Second operand 6 states and 2307 transitions. [2022-11-20 12:31:34,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 490 transitions, 1565 flow [2022-11-20 12:31:34,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 490 transitions, 1520 flow, removed 8 selfloop flow, removed 8 redundant places. [2022-11-20 12:31:34,351 INFO L231 Difference]: Finished difference. Result has 418 places, 414 transitions, 1100 flow [2022-11-20 12:31:34,352 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=1088, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1100, PETRI_PLACES=418, PETRI_TRANSITIONS=414} [2022-11-20 12:31:34,352 INFO L288 CegarLoopForPetriNet]: 402 programPoint places, 16 predicate places. [2022-11-20 12:31:34,352 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 414 transitions, 1100 flow [2022-11-20 12:31:34,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 365.5) internal successors, (2193), 6 states have internal predecessors, (2193), 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) [2022-11-20 12:31:34,353 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:31:34,354 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:31:34,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 12:31:34,354 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-11-20 12:31:34,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:31:34,355 INFO L85 PathProgramCache]: Analyzing trace with hash 532354056, now seen corresponding path program 1 times [2022-11-20 12:31:34,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:31:34,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501598324] [2022-11-20 12:31:34,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:31:34,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:31:34,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:31:34,492 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2022-11-20 12:31:34,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:31:34,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501598324] [2022-11-20 12:31:34,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501598324] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:31:34,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:31:34,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:31:34,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533719983] [2022-11-20 12:31:34,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:31:34,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:31:34,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:31:34,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:31:34,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:31:34,496 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 411 out of 442 [2022-11-20 12:31:34,498 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 414 transitions, 1100 flow. Second operand has 3 states, 3 states have (on average 413.0) internal successors, (1239), 3 states have internal predecessors, (1239), 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) [2022-11-20 12:31:34,498 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:31:34,499 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 411 of 442 [2022-11-20 12:31:34,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:31:34,962 INFO L130 PetriNetUnfolder]: 62/1784 cut-off events. [2022-11-20 12:31:34,962 INFO L131 PetriNetUnfolder]: For 96/97 co-relation queries the response was YES. [2022-11-20 12:31:34,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2158 conditions, 1784 events. 62/1784 cut-off events. For 96/97 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 9898 event pairs, 7 based on Foata normal form. 0/1639 useless extension candidates. Maximal degree in co-relation 2140. Up to 76 conditions per place. [2022-11-20 12:31:34,973 INFO L137 encePairwiseOnDemand]: 438/442 looper letters, 13 selfloop transitions, 2 changer transitions 0/417 dead transitions. [2022-11-20 12:31:34,974 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 417 transitions, 1139 flow [2022-11-20 12:31:34,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:31:34,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:31:34,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1250 transitions. [2022-11-20 12:31:34,977 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.942684766214178 [2022-11-20 12:31:34,977 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1250 transitions. [2022-11-20 12:31:34,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1250 transitions. [2022-11-20 12:31:34,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:31:34,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1250 transitions. [2022-11-20 12:31:34,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 416.6666666666667) internal successors, (1250), 3 states have internal predecessors, (1250), 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) [2022-11-20 12:31:34,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 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) [2022-11-20 12:31:34,983 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 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) [2022-11-20 12:31:34,983 INFO L175 Difference]: Start difference. First operand has 418 places, 414 transitions, 1100 flow. Second operand 3 states and 1250 transitions. [2022-11-20 12:31:34,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 417 transitions, 1139 flow [2022-11-20 12:31:34,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 417 transitions, 1127 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:31:34,992 INFO L231 Difference]: Finished difference. Result has 414 places, 414 transitions, 1098 flow [2022-11-20 12:31:34,993 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1098, PETRI_PLACES=414, PETRI_TRANSITIONS=414} [2022-11-20 12:31:34,993 INFO L288 CegarLoopForPetriNet]: 402 programPoint places, 12 predicate places. [2022-11-20 12:31:34,993 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 414 transitions, 1098 flow [2022-11-20 12:31:34,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 413.0) internal successors, (1239), 3 states have internal predecessors, (1239), 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) [2022-11-20 12:31:34,994 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:31:34,994 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:31:34,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 12:31:34,995 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err9ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-11-20 12:31:34,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:31:34,995 INFO L85 PathProgramCache]: Analyzing trace with hash -676924094, now seen corresponding path program 1 times [2022-11-20 12:31:34,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:31:34,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973163307] [2022-11-20 12:31:34,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:31:34,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:31:35,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:31:35,104 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2022-11-20 12:31:35,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:31:35,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973163307] [2022-11-20 12:31:35,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973163307] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:31:35,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:31:35,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:31:35,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13913604] [2022-11-20 12:31:35,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:31:35,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:31:35,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:31:35,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:31:35,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:31:35,108 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 442 [2022-11-20 12:31:35,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 414 transitions, 1098 flow. Second operand has 3 states, 3 states have (on average 398.0) internal successors, (1194), 3 states have internal predecessors, (1194), 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) [2022-11-20 12:31:35,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:31:35,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 442 [2022-11-20 12:31:35,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:31:35,596 INFO L130 PetriNetUnfolder]: 105/2054 cut-off events. [2022-11-20 12:31:35,596 INFO L131 PetriNetUnfolder]: For 125/128 co-relation queries the response was YES. [2022-11-20 12:31:35,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2525 conditions, 2054 events. 105/2054 cut-off events. For 125/128 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 12654 event pairs, 32 based on Foata normal form. 4/1878 useless extension candidates. Maximal degree in co-relation 2507. Up to 121 conditions per place. [2022-11-20 12:31:35,612 INFO L137 encePairwiseOnDemand]: 430/442 looper letters, 15 selfloop transitions, 4 changer transitions 39/415 dead transitions. [2022-11-20 12:31:35,612 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 415 transitions, 1155 flow [2022-11-20 12:31:35,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:31:35,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:31:35,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1220 transitions. [2022-11-20 12:31:35,615 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9200603318250377 [2022-11-20 12:31:35,615 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1220 transitions. [2022-11-20 12:31:35,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1220 transitions. [2022-11-20 12:31:35,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:31:35,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1220 transitions. [2022-11-20 12:31:35,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 406.6666666666667) internal successors, (1220), 3 states have internal predecessors, (1220), 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) [2022-11-20 12:31:35,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 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) [2022-11-20 12:31:35,621 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 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) [2022-11-20 12:31:35,621 INFO L175 Difference]: Start difference. First operand has 414 places, 414 transitions, 1098 flow. Second operand 3 states and 1220 transitions. [2022-11-20 12:31:35,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 415 transitions, 1155 flow [2022-11-20 12:31:35,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 415 transitions, 1155 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:31:35,629 INFO L231 Difference]: Finished difference. Result has 413 places, 375 transitions, 1039 flow [2022-11-20 12:31:35,630 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=1088, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1039, PETRI_PLACES=413, PETRI_TRANSITIONS=375} [2022-11-20 12:31:35,630 INFO L288 CegarLoopForPetriNet]: 402 programPoint places, 11 predicate places. [2022-11-20 12:31:35,630 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 375 transitions, 1039 flow [2022-11-20 12:31:35,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 398.0) internal successors, (1194), 3 states have internal predecessors, (1194), 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) [2022-11-20 12:31:35,631 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:31:35,631 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:31:35,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 12:31:35,632 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err10ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-11-20 12:31:35,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:31:35,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1343491252, now seen corresponding path program 1 times [2022-11-20 12:31:35,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:31:35,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419338332] [2022-11-20 12:31:35,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:31:35,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:31:35,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:31:35,798 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2022-11-20 12:31:35,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:31:35,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419338332] [2022-11-20 12:31:35,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419338332] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:31:35,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:31:35,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:31:35,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718088300] [2022-11-20 12:31:35,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:31:35,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:31:35,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:31:35,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:31:35,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:31:35,802 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 397 out of 442 [2022-11-20 12:31:35,804 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 375 transitions, 1039 flow. Second operand has 4 states, 4 states have (on average 398.5) internal successors, (1594), 4 states have internal predecessors, (1594), 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) [2022-11-20 12:31:35,804 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:31:35,804 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 397 of 442 [2022-11-20 12:31:35,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:31:36,358 INFO L130 PetriNetUnfolder]: 154/2139 cut-off events. [2022-11-20 12:31:36,358 INFO L131 PetriNetUnfolder]: For 241/244 co-relation queries the response was YES. [2022-11-20 12:31:36,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2918 conditions, 2139 events. 154/2139 cut-off events. For 241/244 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 15015 event pairs, 100 based on Foata normal form. 0/1897 useless extension candidates. Maximal degree in co-relation 2898. Up to 219 conditions per place. [2022-11-20 12:31:36,373 INFO L137 encePairwiseOnDemand]: 437/442 looper letters, 45 selfloop transitions, 4 changer transitions 0/397 dead transitions. [2022-11-20 12:31:36,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 397 transitions, 1182 flow [2022-11-20 12:31:36,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:31:36,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:31:36,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2035 transitions. [2022-11-20 12:31:36,378 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.920814479638009 [2022-11-20 12:31:36,378 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2035 transitions. [2022-11-20 12:31:36,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2035 transitions. [2022-11-20 12:31:36,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:31:36,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2035 transitions. [2022-11-20 12:31:36,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 407.0) internal successors, (2035), 5 states have internal predecessors, (2035), 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) [2022-11-20 12:31:36,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 442.0) internal successors, (2652), 6 states have internal predecessors, (2652), 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) [2022-11-20 12:31:36,387 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 442.0) internal successors, (2652), 6 states have internal predecessors, (2652), 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) [2022-11-20 12:31:36,387 INFO L175 Difference]: Start difference. First operand has 413 places, 375 transitions, 1039 flow. Second operand 5 states and 2035 transitions. [2022-11-20 12:31:36,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 397 transitions, 1182 flow [2022-11-20 12:31:36,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 397 transitions, 1174 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:31:36,397 INFO L231 Difference]: Finished difference. Result has 383 places, 377 transitions, 1056 flow [2022-11-20 12:31:36,397 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=1027, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1056, PETRI_PLACES=383, PETRI_TRANSITIONS=377} [2022-11-20 12:31:36,398 INFO L288 CegarLoopForPetriNet]: 402 programPoint places, -19 predicate places. [2022-11-20 12:31:36,398 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 377 transitions, 1056 flow [2022-11-20 12:31:36,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 398.5) internal successors, (1594), 4 states have internal predecessors, (1594), 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) [2022-11-20 12:31:36,399 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:31:36,399 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:31:36,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-20 12:31:36,400 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-11-20 12:31:36,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:31:36,400 INFO L85 PathProgramCache]: Analyzing trace with hash -864920207, now seen corresponding path program 1 times [2022-11-20 12:31:36,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:31:36,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480880451] [2022-11-20 12:31:36,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:31:36,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:31:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:31:37,367 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2022-11-20 12:31:37,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:31:37,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480880451] [2022-11-20 12:31:37,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480880451] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:31:37,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:31:37,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:31:37,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423264469] [2022-11-20 12:31:37,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:31:37,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:31:37,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:31:37,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:31:37,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:31:37,371 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 362 out of 442 [2022-11-20 12:31:37,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 377 transitions, 1056 flow. Second operand has 6 states, 6 states have (on average 365.6666666666667) internal successors, (2194), 6 states have internal predecessors, (2194), 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) [2022-11-20 12:31:37,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:31:37,374 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 362 of 442 [2022-11-20 12:31:37,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:31:46,976 INFO L130 PetriNetUnfolder]: 11016/42392 cut-off events. [2022-11-20 12:31:46,977 INFO L131 PetriNetUnfolder]: For 1669/1762 co-relation queries the response was YES. [2022-11-20 12:31:47,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65863 conditions, 42392 events. 11016/42392 cut-off events. For 1669/1762 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 481375 event pairs, 2870 based on Foata normal form. 4/39600 useless extension candidates. Maximal degree in co-relation 65841. Up to 9814 conditions per place. [2022-11-20 12:31:47,484 INFO L137 encePairwiseOnDemand]: 436/442 looper letters, 148 selfloop transitions, 6 changer transitions 0/472 dead transitions. [2022-11-20 12:31:47,484 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 472 transitions, 1562 flow [2022-11-20 12:31:47,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:31:47,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:31:47,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2325 transitions. [2022-11-20 12:31:47,488 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8766968325791855 [2022-11-20 12:31:47,488 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2325 transitions. [2022-11-20 12:31:47,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2325 transitions. [2022-11-20 12:31:47,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:31:47,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2325 transitions. [2022-11-20 12:31:47,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 387.5) internal successors, (2325), 6 states have internal predecessors, (2325), 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) [2022-11-20 12:31:47,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 442.0) internal successors, (3094), 7 states have internal predecessors, (3094), 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) [2022-11-20 12:31:47,497 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 442.0) internal successors, (3094), 7 states have internal predecessors, (3094), 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) [2022-11-20 12:31:47,497 INFO L175 Difference]: Start difference. First operand has 383 places, 377 transitions, 1056 flow. Second operand 6 states and 2325 transitions. [2022-11-20 12:31:47,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 472 transitions, 1562 flow [2022-11-20 12:31:47,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 472 transitions, 1562 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:31:47,519 INFO L231 Difference]: Finished difference. Result has 387 places, 376 transitions, 1066 flow [2022-11-20 12:31:47,520 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=1054, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1066, PETRI_PLACES=387, PETRI_TRANSITIONS=376} [2022-11-20 12:31:47,520 INFO L288 CegarLoopForPetriNet]: 402 programPoint places, -15 predicate places. [2022-11-20 12:31:47,520 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 376 transitions, 1066 flow [2022-11-20 12:31:47,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 365.6666666666667) internal successors, (2194), 6 states have internal predecessors, (2194), 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) [2022-11-20 12:31:47,521 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:31:47,521 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:31:47,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-20 12:31:47,522 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err10ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-11-20 12:31:47,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:31:47,522 INFO L85 PathProgramCache]: Analyzing trace with hash -969920209, now seen corresponding path program 1 times [2022-11-20 12:31:47,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:31:47,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165334251] [2022-11-20 12:31:47,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:31:47,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:31:47,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:31:47,634 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2022-11-20 12:31:47,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:31:47,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165334251] [2022-11-20 12:31:47,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165334251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:31:47,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:31:47,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:31:47,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645455099] [2022-11-20 12:31:47,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:31:47,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:31:47,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:31:47,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:31:47,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:31:47,638 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 394 out of 442 [2022-11-20 12:31:47,639 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 376 transitions, 1066 flow. Second operand has 3 states, 3 states have (on average 397.0) internal successors, (1191), 3 states have internal predecessors, (1191), 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) [2022-11-20 12:31:47,639 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:31:47,639 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 394 of 442 [2022-11-20 12:31:47,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:31:48,085 INFO L130 PetriNetUnfolder]: 112/1880 cut-off events. [2022-11-20 12:31:48,085 INFO L131 PetriNetUnfolder]: For 227/230 co-relation queries the response was YES. [2022-11-20 12:31:48,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2597 conditions, 1880 events. 112/1880 cut-off events. For 227/230 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 13157 event pairs, 73 based on Foata normal form. 0/1730 useless extension candidates. Maximal degree in co-relation 2574. Up to 221 conditions per place. [2022-11-20 12:31:48,101 INFO L137 encePairwiseOnDemand]: 439/442 looper letters, 17 selfloop transitions, 2 changer transitions 0/376 dead transitions. [2022-11-20 12:31:48,101 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 376 transitions, 1105 flow [2022-11-20 12:31:48,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:31:48,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:31:48,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1200 transitions. [2022-11-20 12:31:48,104 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9049773755656109 [2022-11-20 12:31:48,104 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1200 transitions. [2022-11-20 12:31:48,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1200 transitions. [2022-11-20 12:31:48,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:31:48,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1200 transitions. [2022-11-20 12:31:48,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 400.0) internal successors, (1200), 3 states have internal predecessors, (1200), 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) [2022-11-20 12:31:48,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 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) [2022-11-20 12:31:48,109 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 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) [2022-11-20 12:31:48,109 INFO L175 Difference]: Start difference. First operand has 387 places, 376 transitions, 1066 flow. Second operand 3 states and 1200 transitions. [2022-11-20 12:31:48,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 376 transitions, 1105 flow [2022-11-20 12:31:48,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 376 transitions, 1093 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:31:48,118 INFO L231 Difference]: Finished difference. Result has 383 places, 375 transitions, 1056 flow [2022-11-20 12:31:48,118 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=1052, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1056, PETRI_PLACES=383, PETRI_TRANSITIONS=375} [2022-11-20 12:31:48,119 INFO L288 CegarLoopForPetriNet]: 402 programPoint places, -19 predicate places. [2022-11-20 12:31:48,119 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 375 transitions, 1056 flow [2022-11-20 12:31:48,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 397.0) internal successors, (1191), 3 states have internal predecessors, (1191), 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) [2022-11-20 12:31:48,120 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:31:48,120 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:31:48,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-20 12:31:48,120 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err6ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-11-20 12:31:48,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:31:48,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1063313254, now seen corresponding path program 1 times [2022-11-20 12:31:48,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:31:48,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454736832] [2022-11-20 12:31:48,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:31:48,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:31:48,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:31:48,983 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2022-11-20 12:31:48,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:31:48,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454736832] [2022-11-20 12:31:48,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454736832] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:31:48,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:31:48,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:31:48,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127535024] [2022-11-20 12:31:48,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:31:48,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:31:48,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:31:48,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:31:48,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:31:48,987 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 362 out of 442 [2022-11-20 12:31:48,989 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 375 transitions, 1056 flow. Second operand has 6 states, 6 states have (on average 366.5) internal successors, (2199), 6 states have internal predecessors, (2199), 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) [2022-11-20 12:31:48,989 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:31:48,989 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 362 of 442 [2022-11-20 12:31:48,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:31:59,730 INFO L130 PetriNetUnfolder]: 10526/47120 cut-off events. [2022-11-20 12:31:59,730 INFO L131 PetriNetUnfolder]: For 1828/1828 co-relation queries the response was YES. [2022-11-20 12:32:00,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70718 conditions, 47120 events. 10526/47120 cut-off events. For 1828/1828 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 571567 event pairs, 6692 based on Foata normal form. 0/44479 useless extension candidates. Maximal degree in co-relation 70695. Up to 11081 conditions per place. [2022-11-20 12:32:00,285 INFO L137 encePairwiseOnDemand]: 436/442 looper letters, 123 selfloop transitions, 6 changer transitions 0/446 dead transitions. [2022-11-20 12:32:00,285 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 446 transitions, 1464 flow [2022-11-20 12:32:00,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:32:00,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:32:00,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2300 transitions. [2022-11-20 12:32:00,299 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8672699849170438 [2022-11-20 12:32:00,300 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2300 transitions. [2022-11-20 12:32:00,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2300 transitions. [2022-11-20 12:32:00,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:32:00,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2300 transitions. [2022-11-20 12:32:00,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 383.3333333333333) internal successors, (2300), 6 states have internal predecessors, (2300), 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) [2022-11-20 12:32:00,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 442.0) internal successors, (3094), 7 states have internal predecessors, (3094), 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) [2022-11-20 12:32:00,308 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 442.0) internal successors, (3094), 7 states have internal predecessors, (3094), 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) [2022-11-20 12:32:00,308 INFO L175 Difference]: Start difference. First operand has 383 places, 375 transitions, 1056 flow. Second operand 6 states and 2300 transitions. [2022-11-20 12:32:00,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 446 transitions, 1464 flow [2022-11-20 12:32:00,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 446 transitions, 1460 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:32:00,356 INFO L231 Difference]: Finished difference. Result has 385 places, 374 transitions, 1062 flow [2022-11-20 12:32:00,357 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=1050, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1062, PETRI_PLACES=385, PETRI_TRANSITIONS=374} [2022-11-20 12:32:00,357 INFO L288 CegarLoopForPetriNet]: 402 programPoint places, -17 predicate places. [2022-11-20 12:32:00,357 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 374 transitions, 1062 flow [2022-11-20 12:32:00,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 366.5) internal successors, (2199), 6 states have internal predecessors, (2199), 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) [2022-11-20 12:32:00,358 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:32:00,358 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 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] [2022-11-20 12:32:00,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-20 12:32:00,359 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err6ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-11-20 12:32:00,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:00,359 INFO L85 PathProgramCache]: Analyzing trace with hash 453138488, now seen corresponding path program 1 times [2022-11-20 12:32:00,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:00,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087264145] [2022-11-20 12:32:00,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:00,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:00,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:01,161 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2022-11-20 12:32:01,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:01,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087264145] [2022-11-20 12:32:01,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087264145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:01,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:32:01,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:32:01,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079900535] [2022-11-20 12:32:01,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:01,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:32:01,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:01,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:32:01,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:32:01,166 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 362 out of 442 [2022-11-20 12:32:01,168 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 374 transitions, 1062 flow. Second operand has 6 states, 6 states have (on average 366.6666666666667) internal successors, (2200), 6 states have internal predecessors, (2200), 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) [2022-11-20 12:32:01,168 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:32:01,168 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 362 of 442 [2022-11-20 12:32:01,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand