./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i --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_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/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_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/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_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/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 085e9170c725dbfce47ad23ff96af1e2e4188372955794675158fde45968fe8a --- 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 10:29:59,931 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:29:59,933 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:29:59,956 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:29:59,957 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:29:59,960 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:29:59,962 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:29:59,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:29:59,982 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:29:59,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:29:59,986 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:29:59,987 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:29:59,987 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:29:59,988 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:29:59,989 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:29:59,990 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:29:59,991 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:29:59,992 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:29:59,999 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:30:00,007 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:30:00,010 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:30:00,012 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:30:00,014 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:30:00,023 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:30:00,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:30:00,027 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:30:00,027 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:30:00,028 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:30:00,028 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:30:00,029 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:30:00,030 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:30:00,030 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:30:00,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:30:00,032 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:30:00,033 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:30:00,033 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:30:00,034 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:30:00,034 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:30:00,035 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:30:00,035 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:30:00,036 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:30:00,041 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-20 10:30:00,064 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:30:00,076 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:30:00,077 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:30:00,077 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:30:00,079 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:30:00,079 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:30:00,080 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:30:00,080 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:30:00,080 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:30:00,081 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:30:00,082 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:30:00,082 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:30:00,082 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:30:00,083 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:30:00,083 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:30:00,083 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:30:00,083 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:30:00,083 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:30:00,084 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-20 10:30:00,084 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:30:00,084 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:30:00,084 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:30:00,084 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:30:00,085 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:30:00,085 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:30:00,085 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:30:00,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:30:00,086 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:30:00,086 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:30:00,086 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:30:00,086 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:30:00,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:30:00,087 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:30:00,087 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:30:00,087 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:30:00,088 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_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 085e9170c725dbfce47ad23ff96af1e2e4188372955794675158fde45968fe8a [2022-11-20 10:30:00,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:30:00,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:30:00,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:30:00,506 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:30:00,507 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:30:00,508 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i [2022-11-20 10:30:03,452 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:30:03,855 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:30:03,857 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i [2022-11-20 10:30:03,877 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/data/ade0c53a0/20ca9034c57f4749ab0718f310036fce/FLAG29703e5ce [2022-11-20 10:30:03,897 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/data/ade0c53a0/20ca9034c57f4749ab0718f310036fce [2022-11-20 10:30:03,902 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:30:03,903 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:30:03,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:30:03,908 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:30:03,912 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:30:03,913 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:30:03" (1/1) ... [2022-11-20 10:30:03,914 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@787590a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:03, skipping insertion in model container [2022-11-20 10:30:03,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:30:03" (1/1) ... [2022-11-20 10:30:03,924 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:30:03,988 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:30:04,536 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 10:30:04,537 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 10:30:04,538 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 10:30:04,539 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 10:30:04,566 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:30:04,584 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:30:04,625 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 10:30:04,626 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 10:30:04,627 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 10:30:04,629 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 10:30:04,647 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:30:04,710 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:30:04,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:04 WrapperNode [2022-11-20 10:30:04,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:30:04,712 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:30:04,712 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:30:04,713 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:30:04,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:04" (1/1) ... [2022-11-20 10:30:04,741 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:04" (1/1) ... [2022-11-20 10:30:04,783 INFO L138 Inliner]: procedures = 273, calls = 38, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 256 [2022-11-20 10:30:04,783 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:30:04,784 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:30:04,784 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:30:04,785 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:30:04,795 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:04" (1/1) ... [2022-11-20 10:30:04,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:04" (1/1) ... [2022-11-20 10:30:04,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:04" (1/1) ... [2022-11-20 10:30:04,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:04" (1/1) ... [2022-11-20 10:30:04,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:04" (1/1) ... [2022-11-20 10:30:04,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:04" (1/1) ... [2022-11-20 10:30:04,850 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:04" (1/1) ... [2022-11-20 10:30:04,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:04" (1/1) ... [2022-11-20 10:30:04,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:30:04,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:30:04,869 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:30:04,869 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:30:04,871 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:04" (1/1) ... [2022-11-20 10:30:04,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:30:04,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:04,919 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:04,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:30:04,969 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-20 10:30:04,969 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-20 10:30:04,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:30:04,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 10:30:04,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:30:04,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:30:04,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:30:04,970 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 10:30:04,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 10:30:04,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:30:04,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 10:30:04,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:30:04,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:30:04,973 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 10:30:05,219 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:30:05,221 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:30:05,893 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:30:05,904 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:30:05,913 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 10:30:05,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:30:05 BoogieIcfgContainer [2022-11-20 10:30:05,917 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:30:05,921 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:30:05,922 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:30:05,925 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:30:05,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:30:03" (1/3) ... [2022-11-20 10:30:05,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72948aa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:30:05, skipping insertion in model container [2022-11-20 10:30:05,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:04" (2/3) ... [2022-11-20 10:30:05,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72948aa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:30:05, skipping insertion in model container [2022-11-20 10:30:05,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:30:05" (3/3) ... [2022-11-20 10:30:05,931 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_24-evilcollapse_nr.i [2022-11-20 10:30:05,941 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 10:30:05,952 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:30:05,954 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-20 10:30:05,955 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:30:06,133 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 10:30:06,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 363 places, 373 transitions, 756 flow [2022-11-20 10:30:06,337 INFO L130 PetriNetUnfolder]: 17/371 cut-off events. [2022-11-20 10:30:06,338 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:30:06,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 378 conditions, 371 events. 17/371 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 786 event pairs, 0 based on Foata normal form. 0/334 useless extension candidates. Maximal degree in co-relation 294. Up to 2 conditions per place. [2022-11-20 10:30:06,353 INFO L82 GeneralOperation]: Start removeDead. Operand has 363 places, 373 transitions, 756 flow [2022-11-20 10:30:06,369 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 361 places, 371 transitions, 748 flow [2022-11-20 10:30:06,383 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:30:06,390 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;@6a63b567, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:30:06,390 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-11-20 10:30:06,415 INFO L130 PetriNetUnfolder]: 1/52 cut-off events. [2022-11-20 10:30:06,415 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:30:06,416 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:06,417 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] [2022-11-20 10:30:06,418 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-20 10:30:06,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:06,425 INFO L85 PathProgramCache]: Analyzing trace with hash 820184857, now seen corresponding path program 1 times [2022-11-20 10:30:06,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:06,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462324113] [2022-11-20 10:30:06,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:06,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:06,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:07,342 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 10:30:07,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:07,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462324113] [2022-11-20 10:30:07,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462324113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:07,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:07,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:30:07,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014166759] [2022-11-20 10:30:07,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:07,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:30:07,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:07,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:30:07,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:30:07,408 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 373 [2022-11-20 10:30:07,414 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 371 transitions, 748 flow. Second operand has 6 states, 6 states have (on average 230.5) internal successors, (1383), 6 states have internal predecessors, (1383), 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 10:30:07,417 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:07,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 373 [2022-11-20 10:30:07,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:30:08,606 INFO L130 PetriNetUnfolder]: 745/2684 cut-off events. [2022-11-20 10:30:08,606 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-11-20 10:30:08,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4200 conditions, 2684 events. 745/2684 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 17476 event pairs, 600 based on Foata normal form. 249/2557 useless extension candidates. Maximal degree in co-relation 3898. Up to 1451 conditions per place. [2022-11-20 10:30:08,629 INFO L137 encePairwiseOnDemand]: 351/373 looper letters, 122 selfloop transitions, 10 changer transitions 2/359 dead transitions. [2022-11-20 10:30:08,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 359 transitions, 988 flow [2022-11-20 10:30:08,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:30:08,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 10:30:08,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1518 transitions. [2022-11-20 10:30:08,647 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.67828418230563 [2022-11-20 10:30:08,648 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1518 transitions. [2022-11-20 10:30:08,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1518 transitions. [2022-11-20 10:30:08,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:30:08,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1518 transitions. [2022-11-20 10:30:08,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 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 10:30:08,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 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 10:30:08,673 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 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 10:30:08,675 INFO L175 Difference]: Start difference. First operand has 361 places, 371 transitions, 748 flow. Second operand 6 states and 1518 transitions. [2022-11-20 10:30:08,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 359 transitions, 988 flow [2022-11-20 10:30:08,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 359 transitions, 986 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 10:30:08,688 INFO L231 Difference]: Finished difference. Result has 362 places, 357 transitions, 738 flow [2022-11-20 10:30:08,690 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=738, PETRI_PLACES=362, PETRI_TRANSITIONS=357} [2022-11-20 10:30:08,694 INFO L288 CegarLoopForPetriNet]: 361 programPoint places, 1 predicate places. [2022-11-20 10:30:08,694 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 357 transitions, 738 flow [2022-11-20 10:30:08,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 230.5) internal successors, (1383), 6 states have internal predecessors, (1383), 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 10:30:08,695 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:08,696 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] [2022-11-20 10:30:08,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:30:08,696 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-20 10:30:08,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:08,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1529770307, now seen corresponding path program 1 times [2022-11-20 10:30:08,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:08,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179437357] [2022-11-20 10:30:08,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:08,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:09,121 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 10:30:09,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:09,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179437357] [2022-11-20 10:30:09,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179437357] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:09,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:09,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:30:09,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31872545] [2022-11-20 10:30:09,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:09,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:30:09,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:09,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:30:09,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:30:09,135 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 373 [2022-11-20 10:30:09,137 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 357 transitions, 738 flow. Second operand has 6 states, 6 states have (on average 231.5) internal successors, (1389), 6 states have internal predecessors, (1389), 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 10:30:09,137 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:09,137 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 373 [2022-11-20 10:30:09,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:30:10,321 INFO L130 PetriNetUnfolder]: 745/2680 cut-off events. [2022-11-20 10:30:10,322 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 10:30:10,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4203 conditions, 2680 events. 745/2680 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 17412 event pairs, 600 based on Foata normal form. 0/2308 useless extension candidates. Maximal degree in co-relation 4007. Up to 1449 conditions per place. [2022-11-20 10:30:10,346 INFO L137 encePairwiseOnDemand]: 361/373 looper letters, 120 selfloop transitions, 10 changer transitions 0/355 dead transitions. [2022-11-20 10:30:10,346 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 355 transitions, 994 flow [2022-11-20 10:30:10,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:30:10,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 10:30:10,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1506 transitions. [2022-11-20 10:30:10,350 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6729222520107239 [2022-11-20 10:30:10,351 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1506 transitions. [2022-11-20 10:30:10,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1506 transitions. [2022-11-20 10:30:10,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:30:10,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1506 transitions. [2022-11-20 10:30:10,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 251.0) internal successors, (1506), 6 states have internal predecessors, (1506), 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 10:30:10,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 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 10:30:10,362 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 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 10:30:10,362 INFO L175 Difference]: Start difference. First operand has 362 places, 357 transitions, 738 flow. Second operand 6 states and 1506 transitions. [2022-11-20 10:30:10,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 355 transitions, 994 flow [2022-11-20 10:30:10,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 355 transitions, 974 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 10:30:10,371 INFO L231 Difference]: Finished difference. Result has 358 places, 355 transitions, 734 flow [2022-11-20 10:30:10,372 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=734, PETRI_PLACES=358, PETRI_TRANSITIONS=355} [2022-11-20 10:30:10,373 INFO L288 CegarLoopForPetriNet]: 361 programPoint places, -3 predicate places. [2022-11-20 10:30:10,373 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 355 transitions, 734 flow [2022-11-20 10:30:10,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 231.5) internal successors, (1389), 6 states have internal predecessors, (1389), 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 10:30:10,375 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:10,375 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] [2022-11-20 10:30:10,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:30:10,375 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-20 10:30:10,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:10,377 INFO L85 PathProgramCache]: Analyzing trace with hash -284757776, now seen corresponding path program 1 times [2022-11-20 10:30:10,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:10,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893063837] [2022-11-20 10:30:10,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:10,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:10,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:10,449 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 10:30:10,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:10,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893063837] [2022-11-20 10:30:10,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893063837] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:10,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:10,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:30:10,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055180852] [2022-11-20 10:30:10,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:10,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:30:10,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:10,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:30:10,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:30:10,456 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 351 out of 373 [2022-11-20 10:30:10,457 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 355 transitions, 734 flow. Second operand has 3 states, 3 states have (on average 352.0) internal successors, (1056), 3 states have internal predecessors, (1056), 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 10:30:10,457 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:10,457 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 351 of 373 [2022-11-20 10:30:10,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:30:10,626 INFO L130 PetriNetUnfolder]: 8/479 cut-off events. [2022-11-20 10:30:10,626 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:30:10,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 525 conditions, 479 events. 8/479 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1313 event pairs, 0 based on Foata normal form. 0/447 useless extension candidates. Maximal degree in co-relation 278. Up to 13 conditions per place. [2022-11-20 10:30:10,629 INFO L137 encePairwiseOnDemand]: 370/373 looper letters, 17 selfloop transitions, 2 changer transitions 0/362 dead transitions. [2022-11-20 10:30:10,631 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 362 transitions, 786 flow [2022-11-20 10:30:10,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:30:10,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 10:30:10,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1073 transitions. [2022-11-20 10:30:10,634 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9588918677390528 [2022-11-20 10:30:10,634 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1073 transitions. [2022-11-20 10:30:10,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1073 transitions. [2022-11-20 10:30:10,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:30:10,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1073 transitions. [2022-11-20 10:30:10,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 357.6666666666667) internal successors, (1073), 3 states have internal predecessors, (1073), 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 10:30:10,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 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 10:30:10,642 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 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 10:30:10,642 INFO L175 Difference]: Start difference. First operand has 358 places, 355 transitions, 734 flow. Second operand 3 states and 1073 transitions. [2022-11-20 10:30:10,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 362 transitions, 786 flow [2022-11-20 10:30:10,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 362 transitions, 766 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 10:30:10,651 INFO L231 Difference]: Finished difference. Result has 356 places, 356 transitions, 726 flow [2022-11-20 10:30:10,652 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=726, PETRI_PLACES=356, PETRI_TRANSITIONS=356} [2022-11-20 10:30:10,655 INFO L288 CegarLoopForPetriNet]: 361 programPoint places, -5 predicate places. [2022-11-20 10:30:10,658 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 356 transitions, 726 flow [2022-11-20 10:30:10,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 352.0) internal successors, (1056), 3 states have internal predecessors, (1056), 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 10:30:10,660 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:10,660 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] [2022-11-20 10:30:10,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:30:10,661 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-20 10:30:10,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:10,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1755133368, now seen corresponding path program 1 times [2022-11-20 10:30:10,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:10,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141001978] [2022-11-20 10:30:10,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:10,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:10,698 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:30:10,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1857231815] [2022-11-20 10:30:10,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:10,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:30:10,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:10,702 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:30:10,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:30:10,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:10,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 10:30:10,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:30:10,936 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 10:30:10,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:30:10,964 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 10:30:10,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:30:10,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:30:11,002 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:30:11,003 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 10:30:11,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:30:11,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:30:11,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:30:11,047 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:30:11,047 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 10:30:11,080 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 10:30:11,080 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:30:11,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:11,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141001978] [2022-11-20 10:30:11,081 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:30:11,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857231815] [2022-11-20 10:30:11,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857231815] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:11,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:11,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:30:11,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927852496] [2022-11-20 10:30:11,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:11,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:30:11,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:11,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:30:11,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:30:11,087 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 373 [2022-11-20 10:30:11,089 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 356 transitions, 726 flow. Second operand has 8 states, 8 states have (on average 234.625) internal successors, (1877), 8 states have internal predecessors, (1877), 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 10:30:11,089 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:11,090 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 373 [2022-11-20 10:30:11,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:30:13,159 INFO L130 PetriNetUnfolder]: 1491/5379 cut-off events. [2022-11-20 10:30:13,159 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 10:30:13,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8416 conditions, 5379 events. 1491/5379 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 36240 event pairs, 1200 based on Foata normal form. 0/4641 useless extension candidates. Maximal degree in co-relation 4178. Up to 1492 conditions per place. [2022-11-20 10:30:13,212 INFO L137 encePairwiseOnDemand]: 363/373 looper letters, 190 selfloop transitions, 9 changer transitions 0/428 dead transitions. [2022-11-20 10:30:13,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 428 transitions, 1272 flow [2022-11-20 10:30:13,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:30:13,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 10:30:13,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2288 transitions. [2022-11-20 10:30:13,220 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6815609174858505 [2022-11-20 10:30:13,220 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2288 transitions. [2022-11-20 10:30:13,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2288 transitions. [2022-11-20 10:30:13,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:30:13,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2288 transitions. [2022-11-20 10:30:13,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 254.22222222222223) internal successors, (2288), 9 states have internal predecessors, (2288), 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 10:30:13,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 373.0) internal successors, (3730), 10 states have internal predecessors, (3730), 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 10:30:13,241 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 373.0) internal successors, (3730), 10 states have internal predecessors, (3730), 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 10:30:13,242 INFO L175 Difference]: Start difference. First operand has 356 places, 356 transitions, 726 flow. Second operand 9 states and 2288 transitions. [2022-11-20 10:30:13,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 428 transitions, 1272 flow [2022-11-20 10:30:13,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 428 transitions, 1270 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:30:13,253 INFO L231 Difference]: Finished difference. Result has 363 places, 356 transitions, 748 flow [2022-11-20 10:30:13,254 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=748, PETRI_PLACES=363, PETRI_TRANSITIONS=356} [2022-11-20 10:30:13,255 INFO L288 CegarLoopForPetriNet]: 361 programPoint places, 2 predicate places. [2022-11-20 10:30:13,256 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 356 transitions, 748 flow [2022-11-20 10:30:13,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 234.625) internal successors, (1877), 8 states have internal predecessors, (1877), 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 10:30:13,257 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:13,257 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] [2022-11-20 10:30:13,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:13,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:30:13,464 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-20 10:30:13,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:13,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1018784656, now seen corresponding path program 1 times [2022-11-20 10:30:13,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:13,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907005601] [2022-11-20 10:30:13,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:13,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:13,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:13,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:13,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907005601] [2022-11-20 10:30:13,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907005601] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:13,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:13,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:30:13,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180899515] [2022-11-20 10:30:13,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:13,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:30:13,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:13,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:30:13,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:30:13,643 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 354 out of 373 [2022-11-20 10:30:13,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 356 transitions, 748 flow. Second operand has 3 states, 3 states have (on average 355.0) internal successors, (1065), 3 states have internal predecessors, (1065), 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 10:30:13,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:13,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 354 of 373 [2022-11-20 10:30:13,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:30:13,762 INFO L130 PetriNetUnfolder]: 8/667 cut-off events. [2022-11-20 10:30:13,763 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-20 10:30:13,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 746 conditions, 667 events. 8/667 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1297 event pairs, 0 based on Foata normal form. 0/628 useless extension candidates. Maximal degree in co-relation 342. Up to 16 conditions per place. [2022-11-20 10:30:13,767 INFO L137 encePairwiseOnDemand]: 370/373 looper letters, 11 selfloop transitions, 2 changer transitions 0/360 dead transitions. [2022-11-20 10:30:13,767 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 360 transitions, 782 flow [2022-11-20 10:30:13,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:30:13,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 10:30:13,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1076 transitions. [2022-11-20 10:30:13,770 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9615728328865059 [2022-11-20 10:30:13,770 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1076 transitions. [2022-11-20 10:30:13,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1076 transitions. [2022-11-20 10:30:13,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:30:13,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1076 transitions. [2022-11-20 10:30:13,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 358.6666666666667) internal successors, (1076), 3 states have internal predecessors, (1076), 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 10:30:13,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 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 10:30:13,777 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 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 10:30:13,777 INFO L175 Difference]: Start difference. First operand has 363 places, 356 transitions, 748 flow. Second operand 3 states and 1076 transitions. [2022-11-20 10:30:13,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 360 transitions, 782 flow [2022-11-20 10:30:13,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 360 transitions, 768 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-20 10:30:13,790 INFO L231 Difference]: Finished difference. Result has 359 places, 357 transitions, 746 flow [2022-11-20 10:30:13,790 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=746, PETRI_PLACES=359, PETRI_TRANSITIONS=357} [2022-11-20 10:30:13,794 INFO L288 CegarLoopForPetriNet]: 361 programPoint places, -2 predicate places. [2022-11-20 10:30:13,794 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 357 transitions, 746 flow [2022-11-20 10:30:13,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 355.0) internal successors, (1065), 3 states have internal predecessors, (1065), 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 10:30:13,795 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:13,796 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] [2022-11-20 10:30:13,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:30:13,796 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-20 10:30:13,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:13,797 INFO L85 PathProgramCache]: Analyzing trace with hash -2082943886, now seen corresponding path program 1 times [2022-11-20 10:30:13,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:13,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461535062] [2022-11-20 10:30:13,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:13,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:13,833 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:30:13,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [30784568] [2022-11-20 10:30:13,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:13,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:30:13,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:13,835 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:30:13,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:30:14,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:14,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 10:30:14,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:30:14,033 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 10:30:14,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 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 10:30:14,070 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:30:14,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 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 10:30:14,114 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:30:14,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 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 10:30:14,144 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 10:30:14,144 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:30:14,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:14,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461535062] [2022-11-20 10:30:14,145 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:30:14,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30784568] [2022-11-20 10:30:14,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30784568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:14,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:14,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:30:14,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324054138] [2022-11-20 10:30:14,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:14,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:30:14,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:14,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:30:14,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:30:14,151 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 373 [2022-11-20 10:30:14,153 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 357 transitions, 746 flow. Second operand has 6 states, 6 states have (on average 241.5) internal successors, (1449), 6 states have internal predecessors, (1449), 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 10:30:14,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:14,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 373 [2022-11-20 10:30:14,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:30:15,208 INFO L130 PetriNetUnfolder]: 746/2988 cut-off events. [2022-11-20 10:30:15,208 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-20 10:30:15,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4682 conditions, 2988 events. 746/2988 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 18380 event pairs, 600 based on Foata normal form. 0/2608 useless extension candidates. Maximal degree in co-relation 4167. Up to 1587 conditions per place. [2022-11-20 10:30:15,231 INFO L137 encePairwiseOnDemand]: 367/373 looper letters, 116 selfloop transitions, 5 changer transitions 0/356 dead transitions. [2022-11-20 10:30:15,231 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 356 transitions, 986 flow [2022-11-20 10:30:15,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:30:15,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 10:30:15,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1538 transitions. [2022-11-20 10:30:15,235 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6872207327971404 [2022-11-20 10:30:15,235 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1538 transitions. [2022-11-20 10:30:15,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1538 transitions. [2022-11-20 10:30:15,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:30:15,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1538 transitions. [2022-11-20 10:30:15,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 256.3333333333333) internal successors, (1538), 6 states have internal predecessors, (1538), 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 10:30:15,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 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 10:30:15,245 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 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 10:30:15,245 INFO L175 Difference]: Start difference. First operand has 359 places, 357 transitions, 746 flow. Second operand 6 states and 1538 transitions. [2022-11-20 10:30:15,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 356 transitions, 986 flow [2022-11-20 10:30:15,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 356 transitions, 984 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:30:15,252 INFO L231 Difference]: Finished difference. Result has 362 places, 356 transitions, 752 flow [2022-11-20 10:30:15,253 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=752, PETRI_PLACES=362, PETRI_TRANSITIONS=356} [2022-11-20 10:30:15,254 INFO L288 CegarLoopForPetriNet]: 361 programPoint places, 1 predicate places. [2022-11-20 10:30:15,254 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 356 transitions, 752 flow [2022-11-20 10:30:15,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 241.5) internal successors, (1449), 6 states have internal predecessors, (1449), 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 10:30:15,255 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:15,255 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] [2022-11-20 10:30:15,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:15,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:30:15,461 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-20 10:30:15,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:15,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1982239298, now seen corresponding path program 1 times [2022-11-20 10:30:15,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:15,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506933005] [2022-11-20 10:30:15,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:15,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:15,503 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:30:15,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [461956824] [2022-11-20 10:30:15,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:15,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:30:15,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:15,505 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:30:15,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:30:15,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:15,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 10:30:15,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:30:15,757 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 13 treesize of output 9 [2022-11-20 10:30:15,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 10:30:15,791 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:30:15,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2022-11-20 10:30:15,822 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:30:15,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 46 [2022-11-20 10:30:15,847 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 10:30:15,848 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:30:15,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:15,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506933005] [2022-11-20 10:30:15,848 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:30:15,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461956824] [2022-11-20 10:30:15,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461956824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:15,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:15,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:30:15,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679639323] [2022-11-20 10:30:15,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:15,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:30:15,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:15,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:30:15,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:30:15,853 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 373 [2022-11-20 10:30:15,854 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 356 transitions, 752 flow. Second operand has 6 states, 6 states have (on average 241.5) internal successors, (1449), 6 states have internal predecessors, (1449), 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 10:30:15,855 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:15,855 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 373 [2022-11-20 10:30:15,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:30:16,975 INFO L130 PetriNetUnfolder]: 746/2984 cut-off events. [2022-11-20 10:30:16,976 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-20 10:30:16,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4696 conditions, 2984 events. 746/2984 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 18367 event pairs, 600 based on Foata normal form. 0/2608 useless extension candidates. Maximal degree in co-relation 4216. Up to 1587 conditions per place. [2022-11-20 10:30:17,007 INFO L137 encePairwiseOnDemand]: 367/373 looper letters, 116 selfloop transitions, 5 changer transitions 0/355 dead transitions. [2022-11-20 10:30:17,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 355 transitions, 992 flow [2022-11-20 10:30:17,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:30:17,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 10:30:17,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1532 transitions. [2022-11-20 10:30:17,013 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6845397676496873 [2022-11-20 10:30:17,013 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1532 transitions. [2022-11-20 10:30:17,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1532 transitions. [2022-11-20 10:30:17,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:30:17,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1532 transitions. [2022-11-20 10:30:17,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 255.33333333333334) internal successors, (1532), 6 states have internal predecessors, (1532), 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 10:30:17,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 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 10:30:17,025 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 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 10:30:17,025 INFO L175 Difference]: Start difference. First operand has 362 places, 356 transitions, 752 flow. Second operand 6 states and 1532 transitions. [2022-11-20 10:30:17,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 355 transitions, 992 flow [2022-11-20 10:30:17,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 355 transitions, 982 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 10:30:17,034 INFO L231 Difference]: Finished difference. Result has 361 places, 355 transitions, 750 flow [2022-11-20 10:30:17,035 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=750, PETRI_PLACES=361, PETRI_TRANSITIONS=355} [2022-11-20 10:30:17,035 INFO L288 CegarLoopForPetriNet]: 361 programPoint places, 0 predicate places. [2022-11-20 10:30:17,036 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 355 transitions, 750 flow [2022-11-20 10:30:17,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 241.5) internal successors, (1449), 6 states have internal predecessors, (1449), 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 10:30:17,037 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:17,037 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 10:30:17,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:17,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 10:30:17,243 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-20 10:30:17,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:17,244 INFO L85 PathProgramCache]: Analyzing trace with hash -276700611, now seen corresponding path program 1 times [2022-11-20 10:30:17,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:17,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387278514] [2022-11-20 10:30:17,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:17,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:17,280 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:30:17,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1499166254] [2022-11-20 10:30:17,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:17,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:30:17,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:17,282 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:30:17,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 10:30:17,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:17,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 10:30:17,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:30:17,529 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 10:30:17,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 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 10:30:17,565 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:30:17,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 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 10:30:17,606 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:30:17,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 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 10:30:17,633 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 10:30:17,633 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:30:17,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:17,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387278514] [2022-11-20 10:30:17,634 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:30:17,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499166254] [2022-11-20 10:30:17,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499166254] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:17,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:17,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:30:17,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974796072] [2022-11-20 10:30:17,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:17,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:30:17,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:17,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:30:17,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:30:17,639 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 373 [2022-11-20 10:30:17,642 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 355 transitions, 750 flow. Second operand has 6 states, 6 states have (on average 240.5) internal successors, (1443), 6 states have internal predecessors, (1443), 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 10:30:17,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:17,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 373 [2022-11-20 10:30:17,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:30:18,499 INFO L130 PetriNetUnfolder]: 746/2980 cut-off events. [2022-11-20 10:30:18,499 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-20 10:30:18,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4696 conditions, 2980 events. 746/2980 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 18309 event pairs, 600 based on Foata normal form. 0/2608 useless extension candidates. Maximal degree in co-relation 4240. Up to 1591 conditions per place. [2022-11-20 10:30:18,530 INFO L137 encePairwiseOnDemand]: 367/373 looper letters, 117 selfloop transitions, 5 changer transitions 0/354 dead transitions. [2022-11-20 10:30:18,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 354 transitions, 992 flow [2022-11-20 10:30:18,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:30:18,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 10:30:18,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1521 transitions. [2022-11-20 10:30:18,534 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6796246648793566 [2022-11-20 10:30:18,535 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1521 transitions. [2022-11-20 10:30:18,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1521 transitions. [2022-11-20 10:30:18,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:30:18,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1521 transitions. [2022-11-20 10:30:18,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 253.5) internal successors, (1521), 6 states have internal predecessors, (1521), 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 10:30:18,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 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 10:30:18,545 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 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 10:30:18,545 INFO L175 Difference]: Start difference. First operand has 361 places, 355 transitions, 750 flow. Second operand 6 states and 1521 transitions. [2022-11-20 10:30:18,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 354 transitions, 992 flow [2022-11-20 10:30:18,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 354 transitions, 982 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 10:30:18,554 INFO L231 Difference]: Finished difference. Result has 360 places, 354 transitions, 748 flow [2022-11-20 10:30:18,554 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=748, PETRI_PLACES=360, PETRI_TRANSITIONS=354} [2022-11-20 10:30:18,555 INFO L288 CegarLoopForPetriNet]: 361 programPoint places, -1 predicate places. [2022-11-20 10:30:18,555 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 354 transitions, 748 flow [2022-11-20 10:30:18,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 240.5) internal successors, (1443), 6 states have internal predecessors, (1443), 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 10:30:18,557 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:18,557 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] [2022-11-20 10:30:18,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:18,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:30:18,765 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-20 10:30:18,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:18,765 INFO L85 PathProgramCache]: Analyzing trace with hash 2037532335, now seen corresponding path program 1 times [2022-11-20 10:30:18,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:18,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84014629] [2022-11-20 10:30:18,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:18,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:18,795 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:30:18,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1851513800] [2022-11-20 10:30:18,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:18,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:30:18,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:18,797 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:30:18,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 10:30:19,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:19,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 10:30:19,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:30:19,078 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 13 treesize of output 9 [2022-11-20 10:30:19,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 10:30:19,117 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:30:19,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2022-11-20 10:30:19,160 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:30:19,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 46 [2022-11-20 10:30:19,183 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 10:30:19,184 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:30:19,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:19,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84014629] [2022-11-20 10:30:19,184 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:30:19,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851513800] [2022-11-20 10:30:19,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851513800] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:19,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:19,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:30:19,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990197417] [2022-11-20 10:30:19,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:19,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:30:19,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:19,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:30:19,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:30:19,188 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 373 [2022-11-20 10:30:19,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 354 transitions, 748 flow. Second operand has 6 states, 6 states have (on average 241.5) internal successors, (1449), 6 states have internal predecessors, (1449), 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 10:30:19,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:19,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 373 [2022-11-20 10:30:19,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:30:20,124 INFO L130 PetriNetUnfolder]: 746/2976 cut-off events. [2022-11-20 10:30:20,124 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-20 10:30:20,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4688 conditions, 2976 events. 746/2976 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 18306 event pairs, 600 based on Foata normal form. 0/2608 useless extension candidates. Maximal degree in co-relation 4252. Up to 1587 conditions per place. [2022-11-20 10:30:20,152 INFO L137 encePairwiseOnDemand]: 367/373 looper letters, 116 selfloop transitions, 5 changer transitions 0/353 dead transitions. [2022-11-20 10:30:20,152 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 353 transitions, 988 flow [2022-11-20 10:30:20,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:30:20,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 10:30:20,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1520 transitions. [2022-11-20 10:30:20,156 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6791778373547811 [2022-11-20 10:30:20,157 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1520 transitions. [2022-11-20 10:30:20,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1520 transitions. [2022-11-20 10:30:20,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:30:20,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1520 transitions. [2022-11-20 10:30:20,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 253.33333333333334) internal successors, (1520), 6 states have internal predecessors, (1520), 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 10:30:20,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 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 10:30:20,166 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 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 10:30:20,166 INFO L175 Difference]: Start difference. First operand has 360 places, 354 transitions, 748 flow. Second operand 6 states and 1520 transitions. [2022-11-20 10:30:20,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 353 transitions, 988 flow [2022-11-20 10:30:20,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 353 transitions, 978 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 10:30:20,173 INFO L231 Difference]: Finished difference. Result has 359 places, 353 transitions, 746 flow [2022-11-20 10:30:20,174 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=746, PETRI_PLACES=359, PETRI_TRANSITIONS=353} [2022-11-20 10:30:20,174 INFO L288 CegarLoopForPetriNet]: 361 programPoint places, -2 predicate places. [2022-11-20 10:30:20,174 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 353 transitions, 746 flow [2022-11-20 10:30:20,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 241.5) internal successors, (1449), 6 states have internal predecessors, (1449), 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 10:30:20,176 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:20,176 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] [2022-11-20 10:30:20,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:20,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:30:20,382 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-20 10:30:20,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:20,383 INFO L85 PathProgramCache]: Analyzing trace with hash -458131675, now seen corresponding path program 1 times [2022-11-20 10:30:20,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:20,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516998140] [2022-11-20 10:30:20,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:20,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:20,419 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:30:20,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [836180538] [2022-11-20 10:30:20,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:20,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:30:20,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:20,421 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:30:20,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 10:30:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:20,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 10:30:20,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:30:20,691 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 10:30:20,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 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 10:30:20,720 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:30:20,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 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 10:30:20,746 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:30:20,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 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 10:30:20,770 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 10:30:20,770 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:30:20,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:20,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516998140] [2022-11-20 10:30:20,771 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:30:20,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836180538] [2022-11-20 10:30:20,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836180538] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:20,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:20,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:30:20,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064541309] [2022-11-20 10:30:20,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:20,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:30:20,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:20,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:30:20,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:30:20,774 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 373 [2022-11-20 10:30:20,776 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 353 transitions, 746 flow. Second operand has 6 states, 6 states have (on average 243.33333333333334) internal successors, (1460), 6 states have internal predecessors, (1460), 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 10:30:20,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:20,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 373 [2022-11-20 10:30:20,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:30:21,604 INFO L130 PetriNetUnfolder]: 746/2972 cut-off events. [2022-11-20 10:30:21,605 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-20 10:30:21,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4676 conditions, 2972 events. 746/2972 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 18233 event pairs, 600 based on Foata normal form. 0/2608 useless extension candidates. Maximal degree in co-relation 4262. Up to 1579 conditions per place. [2022-11-20 10:30:21,629 INFO L137 encePairwiseOnDemand]: 367/373 looper letters, 114 selfloop transitions, 5 changer transitions 0/352 dead transitions. [2022-11-20 10:30:21,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 352 transitions, 982 flow [2022-11-20 10:30:21,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:30:21,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 10:30:21,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1524 transitions. [2022-11-20 10:30:21,633 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6809651474530831 [2022-11-20 10:30:21,633 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1524 transitions. [2022-11-20 10:30:21,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1524 transitions. [2022-11-20 10:30:21,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:30:21,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1524 transitions. [2022-11-20 10:30:21,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 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 10:30:21,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 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 10:30:21,641 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 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 10:30:21,641 INFO L175 Difference]: Start difference. First operand has 359 places, 353 transitions, 746 flow. Second operand 6 states and 1524 transitions. [2022-11-20 10:30:21,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 352 transitions, 982 flow [2022-11-20 10:30:21,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 352 transitions, 972 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 10:30:21,650 INFO L231 Difference]: Finished difference. Result has 358 places, 352 transitions, 744 flow [2022-11-20 10:30:21,651 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=744, PETRI_PLACES=358, PETRI_TRANSITIONS=352} [2022-11-20 10:30:21,653 INFO L288 CegarLoopForPetriNet]: 361 programPoint places, -3 predicate places. [2022-11-20 10:30:21,653 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 352 transitions, 744 flow [2022-11-20 10:30:21,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 243.33333333333334) internal successors, (1460), 6 states have internal predecessors, (1460), 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 10:30:21,654 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:21,654 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:30:21,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:21,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 10:30:21,861 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-20 10:30:21,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:21,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1700938237, now seen corresponding path program 1 times [2022-11-20 10:30:21,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:21,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688479397] [2022-11-20 10:30:21,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:21,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:21,899 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:30:21,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [743836339] [2022-11-20 10:30:21,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:21,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:30:21,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:21,901 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:30:21,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 10:30:22,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:22,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:30:22,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:30:22,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:22,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:30:22,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:22,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:22,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688479397] [2022-11-20 10:30:22,539 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:30:22,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743836339] [2022-11-20 10:30:22,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743836339] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:30:22,539 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:30:22,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-20 10:30:22,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509036577] [2022-11-20 10:30:22,542 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:30:22,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:30:22,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:22,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:30:22,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:30:22,546 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 373 [2022-11-20 10:30:22,549 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 352 transitions, 744 flow. Second operand has 8 states, 8 states have (on average 354.875) internal successors, (2839), 8 states have internal predecessors, (2839), 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 10:30:22,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:22,549 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 373 [2022-11-20 10:30:22,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:30:22,770 INFO L130 PetriNetUnfolder]: 8/833 cut-off events. [2022-11-20 10:30:22,770 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 10:30:22,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 950 conditions, 833 events. 8/833 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 710 event pairs, 0 based on Foata normal form. 4/820 useless extension candidates. Maximal degree in co-relation 351. Up to 13 conditions per place. [2022-11-20 10:30:22,774 INFO L137 encePairwiseOnDemand]: 367/373 looper letters, 12 selfloop transitions, 9 changer transitions 0/362 dead transitions. [2022-11-20 10:30:22,775 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 362 transitions, 808 flow [2022-11-20 10:30:22,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:30:22,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 10:30:22,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3200 transitions. [2022-11-20 10:30:22,781 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9532320524277629 [2022-11-20 10:30:22,781 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3200 transitions. [2022-11-20 10:30:22,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3200 transitions. [2022-11-20 10:30:22,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:30:22,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3200 transitions. [2022-11-20 10:30:22,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 355.55555555555554) internal successors, (3200), 9 states have internal predecessors, (3200), 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 10:30:22,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 373.0) internal successors, (3730), 10 states have internal predecessors, (3730), 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 10:30:22,796 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 373.0) internal successors, (3730), 10 states have internal predecessors, (3730), 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 10:30:22,796 INFO L175 Difference]: Start difference. First operand has 358 places, 352 transitions, 744 flow. Second operand 9 states and 3200 transitions. [2022-11-20 10:30:22,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 362 transitions, 808 flow [2022-11-20 10:30:22,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 362 transitions, 798 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 10:30:22,803 INFO L231 Difference]: Finished difference. Result has 364 places, 358 transitions, 784 flow [2022-11-20 10:30:22,803 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=784, PETRI_PLACES=364, PETRI_TRANSITIONS=358} [2022-11-20 10:30:22,804 INFO L288 CegarLoopForPetriNet]: 361 programPoint places, 3 predicate places. [2022-11-20 10:30:22,804 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 358 transitions, 784 flow [2022-11-20 10:30:22,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 354.875) internal successors, (2839), 8 states have internal predecessors, (2839), 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 10:30:22,805 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:22,805 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, 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, 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, 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] [2022-11-20 10:30:22,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:23,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:30:23,012 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-20 10:30:23,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:23,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1935750755, now seen corresponding path program 2 times [2022-11-20 10:30:23,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:23,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033330648] [2022-11-20 10:30:23,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:23,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:23,079 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:30:23,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1131239756] [2022-11-20 10:30:23,080 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:30:23,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:30:23,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:23,081 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:30:23,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 10:30:23,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 10:30:23,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:30:23,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 10:30:23,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:30:23,419 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 15 treesize of output 11 [2022-11-20 10:30:23,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-20 10:30:23,453 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:30:23,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2022-11-20 10:30:23,485 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:30:23,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2022-11-20 10:30:23,514 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2022-11-20 10:30:23,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:30:23,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:23,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033330648] [2022-11-20 10:30:23,515 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:30:23,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131239756] [2022-11-20 10:30:23,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131239756] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:23,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:23,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:30:23,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760206954] [2022-11-20 10:30:23,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:23,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:30:23,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:23,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:30:23,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:30:23,519 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 373 [2022-11-20 10:30:23,520 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 358 transitions, 784 flow. Second operand has 6 states, 6 states have (on average 230.83333333333334) internal successors, (1385), 6 states have internal predecessors, (1385), 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 10:30:23,521 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:23,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 373 [2022-11-20 10:30:23,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:30:25,146 INFO L130 PetriNetUnfolder]: 1419/4575 cut-off events. [2022-11-20 10:30:25,146 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-20 10:30:25,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7713 conditions, 4575 events. 1419/4575 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 30148 event pairs, 744 based on Foata normal form. 0/3993 useless extension candidates. Maximal degree in co-relation 7057. Up to 2267 conditions per place. [2022-11-20 10:30:25,182 INFO L137 encePairwiseOnDemand]: 366/373 looper letters, 164 selfloop transitions, 6 changer transitions 0/395 dead transitions. [2022-11-20 10:30:25,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 395 transitions, 1202 flow [2022-11-20 10:30:25,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:30:25,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 10:30:25,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1491 transitions. [2022-11-20 10:30:25,189 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6662198391420912 [2022-11-20 10:30:25,189 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1491 transitions. [2022-11-20 10:30:25,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1491 transitions. [2022-11-20 10:30:25,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:30:25,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1491 transitions. [2022-11-20 10:30:25,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 248.5) internal successors, (1491), 6 states have internal predecessors, (1491), 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 10:30:25,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 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 10:30:25,201 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 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 10:30:25,201 INFO L175 Difference]: Start difference. First operand has 364 places, 358 transitions, 784 flow. Second operand 6 states and 1491 transitions. [2022-11-20 10:30:25,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 395 transitions, 1202 flow [2022-11-20 10:30:25,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 395 transitions, 1196 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-20 10:30:25,211 INFO L231 Difference]: Finished difference. Result has 368 places, 359 transitions, 799 flow [2022-11-20 10:30:25,212 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=799, PETRI_PLACES=368, PETRI_TRANSITIONS=359} [2022-11-20 10:30:25,212 INFO L288 CegarLoopForPetriNet]: 361 programPoint places, 7 predicate places. [2022-11-20 10:30:25,213 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 359 transitions, 799 flow [2022-11-20 10:30:25,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 230.83333333333334) internal successors, (1385), 6 states have internal predecessors, (1385), 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 10:30:25,214 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:25,214 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, 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, 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, 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] [2022-11-20 10:30:25,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:25,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 10:30:25,421 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-20 10:30:25,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:25,422 INFO L85 PathProgramCache]: Analyzing trace with hash 497639369, now seen corresponding path program 1 times [2022-11-20 10:30:25,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:25,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142078451] [2022-11-20 10:30:25,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:25,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:25,515 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:30:25,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2105089823] [2022-11-20 10:30:25,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:25,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:30:25,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:25,517 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:30:25,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 10:30:26,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:26,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 1312 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 10:30:26,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:30:26,696 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 1 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:26,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:30:27,261 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 1 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:27,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:27,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142078451] [2022-11-20 10:30:27,261 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:30:27,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105089823] [2022-11-20 10:30:27,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105089823] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:30:27,261 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:30:27,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-20 10:30:27,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454303397] [2022-11-20 10:30:27,262 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:30:27,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 10:30:27,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:27,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 10:30:27,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:30:27,268 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 373 [2022-11-20 10:30:27,274 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 359 transitions, 799 flow. Second operand has 16 states, 16 states have (on average 355.1875) internal successors, (5683), 16 states have internal predecessors, (5683), 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 10:30:27,289 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:27,289 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 373 [2022-11-20 10:30:27,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:30:28,086 INFO L130 PetriNetUnfolder]: 14/1727 cut-off events. [2022-11-20 10:30:28,086 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-11-20 10:30:28,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1991 conditions, 1727 events. 14/1727 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1655 event pairs, 0 based on Foata normal form. 8/1703 useless extension candidates. Maximal degree in co-relation 1751. Up to 29 conditions per place. [2022-11-20 10:30:28,093 INFO L137 encePairwiseOnDemand]: 367/373 looper letters, 20 selfloop transitions, 21 changer transitions 0/383 dead transitions. [2022-11-20 10:30:28,093 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 383 transitions, 981 flow [2022-11-20 10:30:28,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 10:30:28,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 10:30:28,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 7458 transitions. [2022-11-20 10:30:28,111 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9521256223669092 [2022-11-20 10:30:28,112 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 7458 transitions. [2022-11-20 10:30:28,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 7458 transitions. [2022-11-20 10:30:28,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:30:28,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 7458 transitions. [2022-11-20 10:30:28,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 355.14285714285717) internal successors, (7458), 21 states have internal predecessors, (7458), 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 10:30:28,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 373.0) internal successors, (8206), 22 states have internal predecessors, (8206), 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 10:30:28,159 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 373.0) internal successors, (8206), 22 states have internal predecessors, (8206), 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 10:30:28,159 INFO L175 Difference]: Start difference. First operand has 368 places, 359 transitions, 799 flow. Second operand 21 states and 7458 transitions. [2022-11-20 10:30:28,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 383 transitions, 981 flow [2022-11-20 10:30:28,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 383 transitions, 972 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 10:30:28,171 INFO L231 Difference]: Finished difference. Result has 389 places, 372 transitions, 920 flow [2022-11-20 10:30:28,171 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=920, PETRI_PLACES=389, PETRI_TRANSITIONS=372} [2022-11-20 10:30:28,173 INFO L288 CegarLoopForPetriNet]: 361 programPoint places, 28 predicate places. [2022-11-20 10:30:28,173 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 372 transitions, 920 flow [2022-11-20 10:30:28,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 355.1875) internal successors, (5683), 16 states have internal predecessors, (5683), 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 10:30:28,175 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:28,176 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:30:28,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:28,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:30:28,385 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-20 10:30:28,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:28,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1300461815, now seen corresponding path program 2 times [2022-11-20 10:30:28,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:28,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617485388] [2022-11-20 10:30:28,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:28,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:28,596 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:30:28,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2029230452] [2022-11-20 10:30:28,596 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:30:28,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:30:28,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:28,602 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:30:28,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 10:30:29,249 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 10:30:29,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:30:29,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 10:30:29,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:30:29,301 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 15 treesize of output 11 [2022-11-20 10:30:29,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-20 10:30:29,334 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:30:29,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2022-11-20 10:30:29,365 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:30:29,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2022-11-20 10:30:29,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1919 trivial. 0 not checked. [2022-11-20 10:30:29,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:30:29,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:29,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617485388] [2022-11-20 10:30:29,394 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:30:29,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029230452] [2022-11-20 10:30:29,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029230452] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:29,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:29,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:30:29,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403967011] [2022-11-20 10:30:29,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:29,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:30:29,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:29,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:30:29,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:30:29,398 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 373 [2022-11-20 10:30:29,400 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 372 transitions, 920 flow. Second operand has 6 states, 6 states have (on average 230.83333333333334) internal successors, (1385), 6 states have internal predecessors, (1385), 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 10:30:29,400 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:29,400 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 373 [2022-11-20 10:30:29,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:30:32,699 INFO L130 PetriNetUnfolder]: 1802/6396 cut-off events. [2022-11-20 10:30:32,699 INFO L131 PetriNetUnfolder]: For 222/222 co-relation queries the response was YES. [2022-11-20 10:30:32,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10914 conditions, 6396 events. 1802/6396 cut-off events. For 222/222 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 41384 event pairs, 1470 based on Foata normal form. 0/5662 useless extension candidates. Maximal degree in co-relation 9638. Up to 3323 conditions per place. [2022-11-20 10:30:32,744 INFO L137 encePairwiseOnDemand]: 366/373 looper letters, 165 selfloop transitions, 6 changer transitions 0/409 dead transitions. [2022-11-20 10:30:32,744 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 409 transitions, 1344 flow [2022-11-20 10:30:32,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:30:32,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 10:30:32,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1490 transitions. [2022-11-20 10:30:32,748 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6657730116175157 [2022-11-20 10:30:32,748 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1490 transitions. [2022-11-20 10:30:32,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1490 transitions. [2022-11-20 10:30:32,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:30:32,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1490 transitions. [2022-11-20 10:30:32,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 248.33333333333334) internal successors, (1490), 6 states have internal predecessors, (1490), 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 10:30:32,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 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 10:30:32,758 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 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 10:30:32,758 INFO L175 Difference]: Start difference. First operand has 389 places, 372 transitions, 920 flow. Second operand 6 states and 1490 transitions. [2022-11-20 10:30:32,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 409 transitions, 1344 flow [2022-11-20 10:30:32,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 409 transitions, 1320 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-11-20 10:30:32,767 INFO L231 Difference]: Finished difference. Result has 388 places, 373 transitions, 921 flow [2022-11-20 10:30:32,768 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=921, PETRI_PLACES=388, PETRI_TRANSITIONS=373} [2022-11-20 10:30:32,769 INFO L288 CegarLoopForPetriNet]: 361 programPoint places, 27 predicate places. [2022-11-20 10:30:32,769 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 373 transitions, 921 flow [2022-11-20 10:30:32,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 230.83333333333334) internal successors, (1385), 6 states have internal predecessors, (1385), 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 10:30:32,771 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:32,771 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:30:32,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:32,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 10:30:32,977 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-20 10:30:32,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:32,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1562674956, now seen corresponding path program 1 times [2022-11-20 10:30:32,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:32,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288344797] [2022-11-20 10:30:32,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:32,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:33,122 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:30:33,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1760522883] [2022-11-20 10:30:33,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:33,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:30:33,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:33,124 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:30:33,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 10:30:34,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:34,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 2888 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 10:30:34,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:30:35,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 1 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:35,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:30:36,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 1 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:36,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:36,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288344797] [2022-11-20 10:30:36,831 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:30:36,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760522883] [2022-11-20 10:30:36,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760522883] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:30:36,832 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:30:36,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-11-20 10:30:36,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957472814] [2022-11-20 10:30:36,832 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:30:36,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 10:30:36,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:36,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 10:30:36,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2022-11-20 10:30:36,849 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 373 [2022-11-20 10:30:36,861 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 373 transitions, 921 flow. Second operand has 32 states, 32 states have (on average 355.375) internal successors, (11372), 32 states have internal predecessors, (11372), 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 10:30:36,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:36,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 373 [2022-11-20 10:30:36,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:30:38,901 INFO L130 PetriNetUnfolder]: 17/3249 cut-off events. [2022-11-20 10:30:38,901 INFO L131 PetriNetUnfolder]: For 573/573 co-relation queries the response was YES. [2022-11-20 10:30:38,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3901 conditions, 3249 events. 17/3249 cut-off events. For 573/573 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1973 event pairs, 0 based on Foata normal form. 16/3226 useless extension candidates. Maximal degree in co-relation 3743. Up to 61 conditions per place. [2022-11-20 10:30:38,911 INFO L137 encePairwiseOnDemand]: 367/373 looper letters, 36 selfloop transitions, 45 changer transitions 0/424 dead transitions. [2022-11-20 10:30:38,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 424 transitions, 1383 flow [2022-11-20 10:30:38,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-20 10:30:38,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-20 10:30:38,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 15974 transitions. [2022-11-20 10:30:38,928 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9516830503425677 [2022-11-20 10:30:38,928 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 15974 transitions. [2022-11-20 10:30:38,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 15974 transitions. [2022-11-20 10:30:38,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:30:38,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 15974 transitions. [2022-11-20 10:30:38,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 354.97777777777776) internal successors, (15974), 45 states have internal predecessors, (15974), 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 10:30:38,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 373.0) internal successors, (17158), 46 states have internal predecessors, (17158), 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 10:30:38,980 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 373.0) internal successors, (17158), 46 states have internal predecessors, (17158), 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 10:30:38,980 INFO L175 Difference]: Start difference. First operand has 388 places, 373 transitions, 921 flow. Second operand 45 states and 15974 transitions. [2022-11-20 10:30:38,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 424 transitions, 1383 flow [2022-11-20 10:30:38,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 424 transitions, 1370 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-20 10:30:38,990 INFO L231 Difference]: Finished difference. Result has 437 places, 398 transitions, 1210 flow [2022-11-20 10:30:38,991 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1210, PETRI_PLACES=437, PETRI_TRANSITIONS=398} [2022-11-20 10:30:38,991 INFO L288 CegarLoopForPetriNet]: 361 programPoint places, 76 predicate places. [2022-11-20 10:30:38,991 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 398 transitions, 1210 flow [2022-11-20 10:30:38,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 355.375) internal successors, (11372), 32 states have internal predecessors, (11372), 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 10:30:38,994 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:38,994 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:30:39,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:39,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:30:39,215 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-20 10:30:39,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:39,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1906612852, now seen corresponding path program 2 times [2022-11-20 10:30:39,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:39,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885384424] [2022-11-20 10:30:39,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:39,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:39,458 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:30:39,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [619575738] [2022-11-20 10:30:39,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:30:39,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:30:39,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:39,460 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:30:39,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 10:30:40,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 10:30:40,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:30:40,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 10:30:40,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:30:40,618 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 15 treesize of output 11 [2022-11-20 10:30:40,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-20 10:30:40,651 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:30:40,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2022-11-20 10:30:40,675 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:30:40,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2022-11-20 10:30:40,704 INFO L134 CoverageAnalysis]: Checked inductivity of 9571 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9571 trivial. 0 not checked. [2022-11-20 10:30:40,705 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:30:40,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:40,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885384424] [2022-11-20 10:30:40,705 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:30:40,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619575738] [2022-11-20 10:30:40,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619575738] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:40,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:40,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:30:40,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258658895] [2022-11-20 10:30:40,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:40,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:30:40,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:40,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:30:40,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:30:40,709 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 373 [2022-11-20 10:30:40,711 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 398 transitions, 1210 flow. Second operand has 6 states, 6 states have (on average 229.16666666666666) internal successors, (1375), 6 states have internal predecessors, (1375), 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 10:30:40,711 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:40,711 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 373 [2022-11-20 10:30:40,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:30:47,503 INFO L130 PetriNetUnfolder]: 2665/9552 cut-off events. [2022-11-20 10:30:47,503 INFO L131 PetriNetUnfolder]: For 907/907 co-relation queries the response was YES. [2022-11-20 10:30:47,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17005 conditions, 9552 events. 2665/9552 cut-off events. For 907/907 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 56127 event pairs, 986 based on Foata normal form. 0/8626 useless extension candidates. Maximal degree in co-relation 14467. Up to 4281 conditions per place. [2022-11-20 10:30:47,578 INFO L137 encePairwiseOnDemand]: 361/373 looper letters, 249 selfloop transitions, 33 changer transitions 0/542 dead transitions. [2022-11-20 10:30:47,578 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 542 transitions, 2106 flow [2022-11-20 10:30:47,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:30:47,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 10:30:47,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1573 transitions. [2022-11-20 10:30:47,581 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7028596961572833 [2022-11-20 10:30:47,581 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1573 transitions. [2022-11-20 10:30:47,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1573 transitions. [2022-11-20 10:30:47,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:30:47,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1573 transitions. [2022-11-20 10:30:47,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 262.1666666666667) internal successors, (1573), 6 states have internal predecessors, (1573), 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 10:30:47,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 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 10:30:47,588 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 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 10:30:47,588 INFO L175 Difference]: Start difference. First operand has 437 places, 398 transitions, 1210 flow. Second operand 6 states and 1573 transitions. [2022-11-20 10:30:47,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 542 transitions, 2106 flow [2022-11-20 10:30:47,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 542 transitions, 2050 flow, removed 10 selfloop flow, removed 18 redundant places. [2022-11-20 10:30:47,604 INFO L231 Difference]: Finished difference. Result has 429 places, 428 transitions, 1408 flow [2022-11-20 10:30:47,605 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=1154, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1408, PETRI_PLACES=429, PETRI_TRANSITIONS=428} [2022-11-20 10:30:47,606 INFO L288 CegarLoopForPetriNet]: 361 programPoint places, 68 predicate places. [2022-11-20 10:30:47,606 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 428 transitions, 1408 flow [2022-11-20 10:30:47,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 229.16666666666666) internal successors, (1375), 6 states have internal predecessors, (1375), 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 10:30:47,607 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:47,607 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:30:47,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:47,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 10:30:47,815 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-20 10:30:47,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:47,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1262109581, now seen corresponding path program 1 times [2022-11-20 10:30:47,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:47,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975189300] [2022-11-20 10:30:47,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:47,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:48,062 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:30:48,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [461315442] [2022-11-20 10:30:48,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:48,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:30:48,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:48,064 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:30:48,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 10:30:49,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:49,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 5868 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-20 10:30:49,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:30:52,528 INFO L134 CoverageAnalysis]: Checked inductivity of 9571 backedges. 1 proven. 9570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:52,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:30:55,638 INFO L134 CoverageAnalysis]: Checked inductivity of 9571 backedges. 1 proven. 9570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:55,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:55,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975189300] [2022-11-20 10:30:55,639 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:30:55,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461315442] [2022-11-20 10:30:55,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461315442] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:30:55,639 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:30:55,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 61 [2022-11-20 10:30:55,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780848059] [2022-11-20 10:30:55,640 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:30:55,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-20 10:30:55,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:55,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-20 10:30:55,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2022-11-20 10:30:55,660 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 373 [2022-11-20 10:30:55,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 428 transitions, 1408 flow. Second operand has 61 states, 61 states have (on average 355.4918032786885) internal successors, (21685), 61 states have internal predecessors, (21685), 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 10:30:55,676 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:55,676 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 373 [2022-11-20 10:30:55,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:31:02,662 INFO L130 PetriNetUnfolder]: 91/6462 cut-off events. [2022-11-20 10:31:02,662 INFO L131 PetriNetUnfolder]: For 4531/4554 co-relation queries the response was YES. [2022-11-20 10:31:02,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8251 conditions, 6462 events. 91/6462 cut-off events. For 4531/4554 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 5542 event pairs, 4 based on Foata normal form. 34/6405 useless extension candidates. Maximal degree in co-relation 7866. Up to 121 conditions per place. [2022-11-20 10:31:02,681 INFO L137 encePairwiseOnDemand]: 367/373 looper letters, 66 selfloop transitions, 90 changer transitions 0/529 dead transitions. [2022-11-20 10:31:02,681 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 529 transitions, 2494 flow [2022-11-20 10:31:02,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-11-20 10:31:02,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2022-11-20 10:31:02,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 31941 transitions. [2022-11-20 10:31:02,717 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9514745308310992 [2022-11-20 10:31:02,717 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 31941 transitions. [2022-11-20 10:31:02,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 31941 transitions. [2022-11-20 10:31:02,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:31:02,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 31941 transitions. [2022-11-20 10:31:02,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 354.9) internal successors, (31941), 90 states have internal predecessors, (31941), 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 10:31:02,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 373.0) internal successors, (33943), 91 states have internal predecessors, (33943), 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 10:31:02,814 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 373.0) internal successors, (33943), 91 states have internal predecessors, (33943), 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 10:31:02,814 INFO L175 Difference]: Start difference. First operand has 429 places, 428 transitions, 1408 flow. Second operand 90 states and 31941 transitions. [2022-11-20 10:31:02,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 529 transitions, 2494 flow [2022-11-20 10:31:02,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 529 transitions, 2494 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 10:31:02,838 INFO L231 Difference]: Finished difference. Result has 534 places, 474 transitions, 2062 flow [2022-11-20 10:31:02,839 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=1408, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=2062, PETRI_PLACES=534, PETRI_TRANSITIONS=474} [2022-11-20 10:31:02,839 INFO L288 CegarLoopForPetriNet]: 361 programPoint places, 173 predicate places. [2022-11-20 10:31:02,840 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 474 transitions, 2062 flow [2022-11-20 10:31:02,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 355.4918032786885) internal successors, (21685), 61 states have internal predecessors, (21685), 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 10:31:02,843 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:31:02,844 INFO L209 CegarLoopForPetriNet]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:31:02,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 10:31:03,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 10:31:03,062 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-20 10:31:03,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:31:03,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1008509452, now seen corresponding path program 2 times [2022-11-20 10:31:03,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:31:03,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760024525] [2022-11-20 10:31:03,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:31:03,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:31:03,593 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:31:03,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [36217248] [2022-11-20 10:31:03,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:31:03,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:31:03,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:31:03,595 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:31:03,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 10:31:05,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 10:31:05,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:31:05,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 10:31:05,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:31:05,502 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 15 treesize of output 11 [2022-11-20 10:31:05,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-20 10:31:05,541 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:31:05,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2022-11-20 10:31:05,566 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:31:05,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2022-11-20 10:31:05,601 INFO L134 CoverageAnalysis]: Checked inductivity of 39616 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39616 trivial. 0 not checked. [2022-11-20 10:31:05,602 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:31:05,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:31:05,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760024525] [2022-11-20 10:31:05,602 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:31:05,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36217248] [2022-11-20 10:31:05,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36217248] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:31:05,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:31:05,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:31:05,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083646816] [2022-11-20 10:31:05,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:31:05,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:31:05,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:31:05,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:31:05,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:31:05,608 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 373 [2022-11-20 10:31:05,619 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 474 transitions, 2062 flow. Second operand has 6 states, 6 states have (on average 229.33333333333334) internal successors, (1376), 6 states have internal predecessors, (1376), 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 10:31:05,628 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:31:05,628 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 373 [2022-11-20 10:31:05,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:31:22,992 INFO L130 PetriNetUnfolder]: 3429/14102 cut-off events. [2022-11-20 10:31:22,993 INFO L131 PetriNetUnfolder]: For 5398/5406 co-relation queries the response was YES. [2022-11-20 10:31:23,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26974 conditions, 14102 events. 3429/14102 cut-off events. For 5398/5406 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 71928 event pairs, 1148 based on Foata normal form. 0/12988 useless extension candidates. Maximal degree in co-relation 22645. Up to 6611 conditions per place. [2022-11-20 10:31:23,145 INFO L137 encePairwiseOnDemand]: 361/373 looper letters, 282 selfloop transitions, 49 changer transitions 0/638 dead transitions. [2022-11-20 10:31:23,146 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 638 transitions, 3314 flow [2022-11-20 10:31:23,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:31:23,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 10:31:23,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1569 transitions. [2022-11-20 10:31:23,148 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7010723860589813 [2022-11-20 10:31:23,148 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1569 transitions. [2022-11-20 10:31:23,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1569 transitions. [2022-11-20 10:31:23,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:31:23,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1569 transitions. [2022-11-20 10:31:23,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 261.5) internal successors, (1569), 6 states have internal predecessors, (1569), 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 10:31:23,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 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 10:31:23,154 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 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 10:31:23,155 INFO L175 Difference]: Start difference. First operand has 534 places, 474 transitions, 2062 flow. Second operand 6 states and 1569 transitions. [2022-11-20 10:31:23,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 638 transitions, 3314 flow [2022-11-20 10:31:23,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 638 transitions, 3196 flow, removed 17 selfloop flow, removed 42 redundant places. [2022-11-20 10:31:23,202 INFO L231 Difference]: Finished difference. Result has 502 places, 512 transitions, 2394 flow [2022-11-20 10:31:23,202 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=1944, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2394, PETRI_PLACES=502, PETRI_TRANSITIONS=512} [2022-11-20 10:31:23,203 INFO L288 CegarLoopForPetriNet]: 361 programPoint places, 141 predicate places. [2022-11-20 10:31:23,203 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 512 transitions, 2394 flow [2022-11-20 10:31:23,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 229.33333333333334) internal successors, (1376), 6 states have internal predecessors, (1376), 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 10:31:23,204 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:31:23,205 INFO L209 CegarLoopForPetriNet]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:31:23,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-20 10:31:23,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 10:31:23,415 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting fErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-20 10:31:23,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:31:23,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1516565143, now seen corresponding path program 1 times [2022-11-20 10:31:23,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:31:23,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414438864] [2022-11-20 10:31:23,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:31:23,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:31:23,834 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:31:23,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1124038444] [2022-11-20 10:31:23,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:31:23,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:31:23,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:31:23,856 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:31:23,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-20 10:31:27,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:27,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 11411 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:31:27,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:31:33,742 INFO L134 CoverageAnalysis]: Checked inductivity of 39616 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39615 trivial. 0 not checked. [2022-11-20 10:31:33,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:31:39,600 INFO L134 CoverageAnalysis]: Checked inductivity of 39616 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39615 trivial. 0 not checked. [2022-11-20 10:31:39,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:31:39,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414438864] [2022-11-20 10:31:39,601 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:31:39,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124038444] [2022-11-20 10:31:39,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124038444] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:31:39,602 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:31:39,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-20 10:31:39,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900205775] [2022-11-20 10:31:39,603 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:31:39,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:31:39,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:31:39,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:31:39,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:31:39,610 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 350 out of 373 [2022-11-20 10:31:39,613 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 512 transitions, 2394 flow. Second operand has 8 states, 8 states have (on average 352.75) internal successors, (2822), 8 states have internal predecessors, (2822), 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 10:31:39,614 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:31:39,614 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 350 of 373 [2022-11-20 10:31:39,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:31:53,168 INFO L130 PetriNetUnfolder]: 187/9911 cut-off events. [2022-11-20 10:31:53,168 INFO L131 PetriNetUnfolder]: For 4400/4441 co-relation queries the response was YES. [2022-11-20 10:31:53,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13106 conditions, 9911 events. 187/9911 cut-off events. For 4400/4441 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 10896 event pairs, 10 based on Foata normal form. 4/9749 useless extension candidates. Maximal degree in co-relation 12221. Up to 181 conditions per place. [2022-11-20 10:31:53,209 INFO L137 encePairwiseOnDemand]: 367/373 looper letters, 21 selfloop transitions, 9 changer transitions 0/528 dead transitions. [2022-11-20 10:31:53,209 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 528 transitions, 2488 flow [2022-11-20 10:31:53,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:31:53,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 10:31:53,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3182 transitions. [2022-11-20 10:31:53,212 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9478701221328567 [2022-11-20 10:31:53,212 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3182 transitions. [2022-11-20 10:31:53,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3182 transitions. [2022-11-20 10:31:53,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:31:53,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3182 transitions. [2022-11-20 10:31:53,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 353.55555555555554) internal successors, (3182), 9 states have internal predecessors, (3182), 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 10:31:53,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 373.0) internal successors, (3730), 10 states have internal predecessors, (3730), 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 10:31:53,221 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 373.0) internal successors, (3730), 10 states have internal predecessors, (3730), 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 10:31:53,221 INFO L175 Difference]: Start difference. First operand has 502 places, 512 transitions, 2394 flow. Second operand 9 states and 3182 transitions. [2022-11-20 10:31:53,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 528 transitions, 2488 flow [2022-11-20 10:31:53,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 528 transitions, 2488 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 10:31:53,276 INFO L231 Difference]: Finished difference. Result has 513 places, 518 transitions, 2444 flow [2022-11-20 10:31:53,277 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=2394, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2444, PETRI_PLACES=513, PETRI_TRANSITIONS=518} [2022-11-20 10:31:53,278 INFO L288 CegarLoopForPetriNet]: 361 programPoint places, 152 predicate places. [2022-11-20 10:31:53,278 INFO L495 AbstractCegarLoop]: Abstraction has has 513 places, 518 transitions, 2444 flow [2022-11-20 10:31:53,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 352.75) internal successors, (2822), 8 states have internal predecessors, (2822), 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 10:31:53,279 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:31:53,281 INFO L209 CegarLoopForPetriNet]: trace histogram [90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 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] [2022-11-20 10:31:53,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-20 10:31:53,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:31:53,505 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting fErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-20 10:31:53,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:31:53,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1419987031, now seen corresponding path program 2 times [2022-11-20 10:31:53,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:31:53,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218637985] [2022-11-20 10:31:53,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:31:53,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:31:54,920 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:31:54,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [433437239] [2022-11-20 10:31:54,921 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:31:54,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:31:54,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:31:54,934 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:31:54,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a0c4c1-8b94-43c9-8e7e-6df21d9ae52e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-20 10:31:59,631 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 10:31:59,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:31:59,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 10:31:59,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:32:00,108 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 10:32:00,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 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 10:32:00,135 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:32:00,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 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 10:32:00,157 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:32:00,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 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 10:32:00,204 INFO L134 CoverageAnalysis]: Checked inductivity of 364812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364812 trivial. 0 not checked. [2022-11-20 10:32:00,204 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:32:00,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:32:00,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218637985] [2022-11-20 10:32:00,205 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:32:00,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433437239] [2022-11-20 10:32:00,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433437239] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:00,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:32:00,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:32:00,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645551849] [2022-11-20 10:32:00,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:00,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:32:00,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:32:00,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:32:00,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:32:00,213 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 373 [2022-11-20 10:32:00,214 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 518 transitions, 2444 flow. Second operand has 6 states, 6 states have (on average 244.66666666666666) internal successors, (1468), 6 states have internal predecessors, (1468), 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 10:32:00,214 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:32:00,215 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 373 [2022-11-20 10:32:00,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand